Gear shaft assembly for toothed roll pair roller mill

Abstract

This utility model belongs to the technical field of roller mill accessories, specifically disclosing a toothed shaft assembly for a toothed roller mill, including a main shaft. By first assembling a flat key, round nut, locking washer, fixed plate, and spacer, and then performing overall machining, the machining dimensions and parallelism requirements of each surface can be guaranteed, effectively ensuring subsequent assembly accuracy. Multiple fixed plates are fixedly connected to the main shaft along its axial direction. Multiple mounting grooves are arranged circumferentially around the fixed plates. Each mounting groove contains a pair of first wear-resistant teeth. These first wear-resistant teeth are made from a single piece of wear-resistant material, making them more practical and wear-resistant, saving costs. A first locking block is provided between each pair of first wear-resistant teeth, and a second locking block is provided between adjacent pairs of first wear-resistant teeth. Both the first and second locking blocks are pressed against the first wear-resistant teeth through wedge-shaped contact. This inclined wedge structure allows the mating surfaces to lock together, effectively preventing loosening.

Description

Technical Field

[0001] This utility model belongs to the technical field of roller mill accessories, specifically relating to a toothed shaft system assembly for a toothed roller mill. Background Technology

[0002] Roll mills commonly used in brick and tile and mining production lines mostly employ a symmetrical double-smooth roller design, suitable for preparing most common raw materials. However, they are prone to clogging when handling materials with high moisture content and high viscosity. This often requires manual cleaning, affecting raw material preparation efficiency and increasing labor and time costs. Utility Model Content

[0003] To address the problems in the existing technology, a toothed shaft system assembly for a toothed roller mill is proposed. This utility model provides the following technical solution: A toothed shaft assembly for a toothed roller mill includes a main shaft with multiple fixed discs fixedly connected along its axial direction. Multiple mounting slots are arranged circumferentially around the axis of the fixed discs. Two first wear-resistant teeth are installed in pairs in each mounting slot. A first locking block is arranged between each pair of first wear-resistant teeth, and a second locking block is arranged between adjacent pairs of first wear-resistant teeth. Both the first locking block and the second locking block are pressed against the first wear-resistant teeth by wedge-shaped contact.

[0004] Preferably, a spacer is provided between adjacent fixed discs, and the spacer is fitted onto the main shaft.

[0005] Preferably, the outermost two fixing discs are provided with fixing sleeves on their outer sides, and the fixing sleeves abut against the fixing discs.

[0006] Preferably, the outer side of the fixed sleeve is provided with a round nut and a locking washer for pre-tightening and positioning, and the round nut and locking washer are fitted on the main shaft.

[0007] Preferably, bearing support assemblies are fitted at both ends of the spindle. The bearing support assembly includes a bearing housing, a bearing installed in the bearing housing, and a bearing end cap for positioning the bearing. The bearing is assembled at the shoulder of the spindle.

[0008] Preferably, a lip seal is provided between the bearing end cover and the bearing housing.

[0009] Preferably, one end of the main shaft is fitted with a pulley for transmitting power.

[0010] Preferably, the pulley is located on the same side of the two bearing support assemblies.

[0011] Preferably, the first locking block is connected to the fixed plate by a first bolt.

[0012] Preferably, the second locking block is connected to the fixed plate by a second bolt.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. The inclined wedge structure of the first locking block, the second locking block and the first wear-resistant tooth can lock the mating surfaces together, which can effectively prevent loosening; 2. Assembling components before machining the entire spindle ensures the required dimensions and parallelism on each surface, effectively guaranteeing subsequent assembly accuracy. 3. The intermittent welding of the spacer enhances the overall structural stability. The round nut and locking washer are tightened and locked to effectively control the dimensional gaps and ensure assembly accuracy. Attached Figure Description

[0014] Figure 1 This is a cross-sectional view of the spindle of this utility model in its installation state; Figure 2 This is a perspective view of the present invention; Figure 3 This is a front view structural diagram of the present invention; Figure 4 It is about Figure 3 A sectional view along section line AA; Figure 5 It is about Figure 4 A sectional view along the BB section line; In the attached diagram: 1. Main shaft; 2. Fixed disc; 21. First fixing hole; 22. Second fixing hole; 3. First wear-resistant tooth; 41. First locking block; 42. Second locking block; 51. Spacer; 52. Fixed sleeve; 61. Round nut; 62. Locking washer; 7. First flat key; 8. Bearing support assembly; 81. Bearing seat; 82. Bearing; 83. Bearing end cover; 84. Lip seal; 85. First shaft end bolt assembly; 9. Shaft sleeve; 10. Pulley; 101. Second flat key; 102. Shaft end retaining ring; 103. Second shaft end bolt assembly; 11. First bolt; 12. Second bolt. Detailed Implementation

[0015] The directional terms mentioned in the following embodiments, such as "up", "down", "left", and "right", are only for reference to the accompanying drawings. Therefore, the directional terms used are for illustration and not for limiting the invention of this utility model.

[0016] like Figure 1-5As shown, a geared shaft assembly for a toothed roller mill includes a main shaft 1, which is a welded main shaft 1. As the core component of the shaft assembly, it is assembled with a flat key, round nut 61, locking washer 62, fixed plate 2, and spacer 51 before overall machining. This ensures the machining dimensions and parallelism requirements of each surface, effectively guaranteeing subsequent assembly accuracy. Multiple fixed plates 2 are fixedly connected to the main shaft 1 along its axial direction. Multiple mounting grooves are provided on the fixed plates 2 around their axis. Each mounting groove contains... Each pair of first wear-resistant teeth 3 is installed. These first wear-resistant teeth 3 are made of wear-resistant material cut from a whole plate. Compared with the traditional plate with wear-resistant welding rods, they are more practical and wear-resistant, and save costs. A first locking block 41 is set between each pair of first wear-resistant teeth 3, and a second locking block 42 is set between adjacent pairs of first wear-resistant teeth 3. The first locking block 41 and the second locking block 42 are both pressed against the first wear-resistant teeth 3 by wedge-shaped mating. This inclined wedge structure can lock the mating surfaces together and effectively prevent loosening.

[0017] Specifically, a spacer 51 is provided between adjacent fixed disks 2. The spacer 51 is fitted onto the main shaft 1. The spacer 51 is intermittently welded firmly at various points, which can enhance the overall structural stability.

[0018] Specifically, the outermost two fixing plates 2 are provided with fixing sleeves 52, which abut against the fixing plates 2.

[0019] Specifically, the outer side of the fixed sleeve 52 is provided with a round nut 61 and a stop washer 62 for pre-tightening and positioning. The round nut 61 and the stop washer 62 are fitted on the spindle 1. By tightening the round nut 61 and locking the stop washer 62, the dimensional clearance can be effectively controlled and the assembly accuracy can be guaranteed.

[0020] During assembly, first install the first flat key 7 into the spindle 1, then put the round nut 61 and the locking washer 62 on one side onto the spindle 1 and screw them on. Next, starting from one end, install the fixing sleeve 52, the spacer 51 and the fixing plate 2 into the spindle 1 in sequence. Then repeat the installation of the spacer 51 and the fixing plate 2. Then install the fixing sleeve 52 on the other end. After that, screw in the round nut 61 and the locking washer 62 on the other side. After controlling the size gap to be correct, lock the locking washer 62. Finally, weld the spacer 51 intermittently to secure it.

[0021] Specifically, the two ends of the spindle 1 are fitted with bearing support assemblies 8. The bearing support assembly 8 includes a bearing housing 81, a bearing 82 installed in the bearing housing 81, and a bearing end cover 83 for positioning the bearing 82. The bearing 82 is assembled to the shoulder of the spindle 1 by heat fitting. The heat fitting method can make the bearing 82 fit tightly with the spindle 1 to ensure operational stability.

[0022] Specifically, a lip seal 84 is provided between the bearing end cover 83 and the bearing housing 81. The lip seal 84 can effectively prevent dust and impurities from entering the interior of the bearing 82 and extend the service life of the bearing 82.

[0023] Specifically, one end of the main shaft 1 is equipped with a pulley 10 for transmitting power. The pulley 10 can be connected to an external power source to transmit power and drive the toothed roller shaft to rotate.

[0024] Specifically, the pulley 10 is located on the same side of the two bearing support assemblies 8.

[0025] During installation, first assemble the lip seal 84 and bearing housing 81 into a single unit and insert it into the welded spindle 1. Heat the bearing 82 and heat-fit it to the corresponding shoulder of the welded spindle 1, then push the front bearing housing 81 into the bearing 82. Add a certain amount of extreme pressure lithium-based grease around the bearing 82. After assembling the seal ring and bearing end cap 83, insert them into the bearing housing 81, then tighten the first shaft end bolt group 85. Next, limit the rotation of the pulley 10 by sequentially installing the bushing 9 and the second flat key 101. Axially fix the pulley 10 using the shaft end retaining ring 102 and the second shaft end bolt group 103. The bearing housing 81 assembly on the other side can be heat-fitted and pressed into the bearing housing 81 end cap using the same method.

[0026] Specifically, the first locking block 41 is connected to the first fixing hole 21 on the fixing plate 2 by the first bolt 11. By tightening the first bolt 11, the first locking block 41 can be firmly fixed on the fixing plate 2, thereby effectively locking the first wear-resistant tooth 3.

[0027] Specifically, the second locking block 42 is connected to the second fixing hole 22 on the fixing plate 2 by the second bolt 12. By tightening the second bolt 12, the second locking block 42 can be firmly fixed on the fixing plate 2, further enhancing the locking effect on the first wear-resistant tooth 3. The first locking block 41, the second locking block 42 and the fixing plate 2 are left with a certain gap to ensure that the inclined surface of the first wear-resistant tooth 3 can be normally locked by force.

[0028] Specifically, the fixed plate 2 has a symmetrical structure, and the mounting groove, the first fixing hole 21 and the second fixing hole 22 on it are all arranged at equal intervals in the circumference.

[0029] Specifically, the first bolt 11 is a hex socket head cap screw, and the second bolt 12 is a countersunk hex socket head cap screw.

Claims

1. A gear shaft system assembly for a toothed roller mill, characterized in that, Includes a main shaft (1), on which multiple fixed disks (2) are fixedly connected along its axial direction. Multiple mounting slots are arranged around the axis of the fixed disks (2). Two first wear-resistant teeth (3) are installed in pairs in each mounting slot. A first locking block (41) is arranged between each pair of first wear-resistant teeth (3), and a second locking block (42) is arranged between adjacent pairs of first wear-resistant teeth (3). The first locking block (41) and the second locking block (42) are both pressed against the first wear-resistant teeth (3) by wedge surface cooperation.

2. The gear shaft assembly for a toothed roller mill according to claim 1, characterized in that, A spacer (51) is provided between adjacent fixed disks (2), and the spacer (51) is fitted onto the main shaft (1).

3. The gear shaft assembly for a toothed roller mill according to claim 2, characterized in that, The outermost two fixing plates (2) are provided with fixing sleeves (52), which abut against the fixing plates (2).

4. The gear shaft assembly for a toothed roller mill according to claim 3, characterized in that, The outer side of the fixed sleeve (52) is provided with a round nut (61) and a stop washer (62) for pre-tightening positioning, and the round nut (61) and the stop washer (62) are fitted on the main shaft (1).

5. The gear shaft assembly for a toothed roller mill according to claim 1, characterized in that, The two ends of the spindle (1) are fitted with bearing support assemblies (8). The bearing support assembly (8) includes a bearing housing (81), a bearing (82) installed in the bearing housing (81), and a bearing end cap (83) for positioning the bearing (82). The bearing (82) is assembled at the shoulder of the spindle (1).

6. The gear shaft assembly for a toothed roller mill according to claim 5, characterized in that, A lip seal (84) is provided between the bearing end cover (83) and the bearing housing (81).

7. The gear shaft assembly for a toothed roller mill according to claim 5, characterized in that, One end of the main shaft (1) is fitted with a pulley (10) for transmitting power.

8. The gear shaft assembly for a toothed roller mill according to claim 7, characterized in that, The pulley (10) is located on the same side of the two bearing support assemblies (8).

9. The gear shaft assembly for a toothed roller mill according to claim 1, characterized in that, The first locking block (41) is connected to the fixed plate (2) by the first bolt (11).

10. The gear shaft assembly for a toothed roller mill according to claim 1, characterized in that, The second locking block (42) is connected to the fixed plate (2) by the second bolt (12).

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