Grinding structure of vertical mill grinding roller

Abstract

The application relates to the technical field of grinding roller, and discloses a wear-preventing structure of a vertical mill grinding roller, which comprises a grinding roller shaft and a bearing ring sleeved outside the grinding roller shaft, the bearing ring comprises an upper lining ring, a middle lining ring and a lower lining ring which are integrally connected, a wear-preventing structure is arranged between the grinding roller shaft and the bearing ring, the wear-preventing structure comprises a wear-preventing support and an outer-axle dynamic pressing piece matched with the wear-preventing support; when the grinding roller shaft is driven to rotate, the outer-axle dynamic pressing piece rotates synchronously with the grinding roller shaft, and then the wear-preventing support is pressed by the outer-axle dynamic pressing piece, so that the wear-preventing support is tightly pressed against the bearing ring, the contact area of the grinding roller shaft and the bearing ring is reduced, the wear of the grinding roller shaft and the bearing ring is reduced, the wear-preventing support is always in close contact with the bearing ring according to the wear condition and is not affected by the wear degree, the grinding roller shaft and the bearing ring are kept stable, and the problem that the bearing inner ring is greatly worn by the grinding roller of the vertical mill in the prior art is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of grinding roller, in particular to a kind of anti-abrasion structure of vertical mill grinding roller. BACKGROUND

[0002] Vertical roller mill is short for vertical mill, a kind of cement raw material, cement clinker, slag and coal ash grinding processing, with simple structure, low manufacturing and using cost characteristics.It includes body, grinding disc device and transmission device, body and grinding disc device are provided with the centering structure of determining rotation center, the bottom of grinding disc device is fixedly provided with rotation guide rail, grinding disc device can be rotatably supported on body through rotation guide rail, grinding disc device is drivingly connected with transmission device.

[0003] Through retrieval, a kind of bearing configuration structure for vertical mill grinding roller with announcement number CN218542935U, including spindle, grinding roller and bearing assembly, the grinding roller is rotatably installed in the front end of the spindle by bearing assembly, the bearing assembly includes two single-row tapered roller bearings arranged at intervals.The structure is used by two single-row tapered roller bearings, simple structure, reduces the cost under the condition of guaranteeing the use performance of grinding roller.

[0004] However, the above-mentioned vertical mill grinding roller and bearing configuration structure has the following problems: the vertical mill grinding roller is the main element of driving grinding disc and grinding pressure, since the torque carried by the vertical mill grinding roller is high load, in the rotating process, the pressure of the vertical mill grinding roller on the inner ring of the bearing is huge, under the huge relative friction force generated between the grinding roller and the inner ring of the bearing, the wear and tear of the two is very fast, if not replaced in time, it will produce a lot of noise and mechanical vibration during operation, and affect the overall stability of the equipment. SUMMARY

[0005] The present application provides an anti-abrasion structure for vertical mill grinding roller, which solves the problem of excessive wear of the inner ring of the bearing in the prior art.

[0006] The technical scheme of the present application is as follows: an anti-abrasion structure for vertical mill grinding roller, comprising a grinding roller shaft and a bearing ring fitted outside the grinding roller shaft, the bearing ring comprising an upper lining ring, an intermediate lining ring and a lower lining ring connected integrally, an anti-abrasion structure being clamped between the grinding roller shaft and the bearing ring, the anti-abrasion structure comprising an anti-abrasion support and an external dynamic pressure piece matched with the anti-abrasion support, the anti-abrasion support being located between the clamping cavity of the grinding roller shaft and the bearing ring, the outer surface of the grinding roller shaft being provided with a rib groove, and the external dynamic pressure piece being embedded in the rib groove, the grinding roller shaft being pressed against the anti-abrasion support by the external dynamic pressure piece when rotating, so that the bearing ring is tightly supported outside the grinding roller shaft.

[0007] Preferably, the anti-abrasion support is flat and has arc-shaped surfaces on both sides, and the inner ring wall of the intermediate lining ring is provided with a first protrusion for limiting the position of the pressing block.

[0008] Preferably, the out-of-shaft dynamic pressing piece comprises a first corner and a first arc-shaped extrusion part connected integrally, the first corner is embedded in the corner groove, and the first arc-shaped extrusion part abuts against the arc-shaped surface of the extrusion block.

[0009] Preferably, the anti-abrasion support piece comprises a positioning pin shaft and a rotating pressing block rotatably connected outside the positioning pin shaft, both ends of the positioning pin shaft are fixed on the upper lining ring and the lower lining ring of the bearing ring respectively, and the rotating pressing block is provided with a second arc-shaped extrusion part which is symmetric to the center of the positioning pin shaft.

[0010] Preferably, the out-of-shaft dynamic pressing piece comprises a second corner, a first clamping part and a third arc-shaped extrusion part connected integrally, the second corner is embedded in the corner groove, the first clamping part is attached to the outer surface of the mill roller shaft, and the third arc-shaped extrusion part abuts against the second arc-shaped extrusion part of the rotating pressing block.

[0011] Preferably, the anti-abrasion support piece comprises a first arc-shaped pressing plate and a second arc-shaped pressing plate, the first arc-shaped pressing plate is attached to the outer surface of the mill roller shaft, the second arc-shaped pressing plate is attached to the inner ring wall of the intermediate lining ring, one side of the first arc-shaped pressing plate towards the second arc-shaped pressing plate is fixed with a first support, one side of the second arc-shaped pressing plate towards the first arc-shaped pressing plate is fixed with a second support, the first support and the second support are slidably connected, and the inner sides of the first support and the second support are rotatably connected with rollers.

[0012] Preferably, the inner ring wall of the intermediate lining ring is provided with a first protrusion for limiting the second arc-shaped pressing plate, and the outer surface of the mill roller shaft is provided with a second protrusion for limiting the first arc-shaped pressing plate.

[0013] Preferably, the out-of-shaft dynamic pressing piece comprises a third corner, a second clamping part and a hook-shaped extrusion part connected integrally, the third corner is embedded in the corner groove, the second clamping part is attached to the outer surface of the mill roller shaft, and the hook-shaped extrusion part extends to between the two rollers on the first support and the second support.

[0014] The present application has the following beneficial effects:

[0015] In the present application, when the mill roller shaft is driven to rotate, the out-of-shaft dynamic pressing piece rotates synchronously with the mill roller shaft, and then the out-of-shaft dynamic pressing piece presses the anti-abrasion support piece, so that the anti-abrasion support piece is tightly pressed against the bearing ring, the contact area between the mill roller shaft and the bearing ring is reduced, the wear between the mill roller shaft and the bearing ring is reduced, the anti-abrasion support piece is always attached to the bearing ring according to the wear condition and is not affected by the degree of wear, the mill roller shaft and the bearing ring are kept stable, and the problem of large wear of the inner ring of the bearing by the mill roller in the prior art is solved. BRIEF DESCRIPTION OF DRAWINGS

[0016] The application will be described in further detail below with reference to the drawings and specific embodiments.

[0017] Figure 1 A schematic diagram of the anti-wear structure of the mill roller proposed in Embodiment One;

[0018] Figure 2 A schematic diagram of the anti-wear structure of the mill roller proposed in Embodiment One;

[0019] Figure 3 A schematic diagram of the anti-wear structure of the mill roller proposed in Embodiment One;

[0020] Figure 4 A schematic diagram of the anti-wear support and the dynamic pressure element outside the shaft proposed in Embodiment One;

[0021] Figure 5 A schematic diagram of the anti-wear structure of the mill roller proposed in Embodiment Two;

[0022] Figure 6 A schematic diagram of the anti-wear structure of the mill roller proposed in Embodiment Two;

[0023] Figure 7 A schematic diagram of the anti-wear structure of the mill roller proposed in Embodiment Two;

[0024] Figure 8 A schematic diagram of the anti-wear support and the dynamic pressure element outside the shaft proposed in Embodiment Two;

[0025] Figure 9 A schematic diagram of the anti-wear structure of the mill roller proposed in Embodiment Three;

[0026] Figure 10 A schematic diagram of the anti-wear structure of the mill roller proposed in Embodiment Three;

[0027] Figure 11 A schematic diagram of the anti-wear structure of the mill roller proposed in Embodiment Three;

[0028] Figure 12 A schematic diagram of the anti-wear support and the dynamic pressure element outside the shaft proposed in Embodiment Three;

[0029] Figure 13 A schematic diagram of the anti-wear support and the dynamic pressure element outside the shaft proposed in Embodiment Three;

[0030] In the figure: 1, the roller shaft of the grinding roller; 11, the groove; 12, the second protrusion; 2, the bearing ring; 21, the upper lining ring; 22, the middle lining ring; 23, the lower lining ring; 24, the first protrusion; 3, the anti-wear structure; 31, the anti-wear support; 311, the extrusion block; 312, the rotating pressing block; 313, the positioning pin shaft; 314, the second arc-shaped extrusion part; 315, the first arc-shaped pressing plate; 316, the second arc-shaped pressing plate; 317, the first support; 318, the second support; 319, the roller; 32, the shaft outer dynamic pressing part; 321, the first corner; 322, the first arc-shaped extrusion part; 323, the second corner; 324, the first clamping part; 325, the third arc-shaped extrusion part; 326, the third corner; 327, the second clamping part; 328, the hook-shaped extrusion part. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0032] Embodiment one

[0033] Please refer to Figure 1 and Figure 2 The present application provides a technical solution: an anti-wear structure of a vertical grinding roller, which comprises a grinding roller shaft 1 and a bearing ring 2 sleeved outside the grinding roller shaft 1. The bearing ring 2 comprises an integrally connected upper lining ring 21, middle lining ring 22 and lower lining ring 23. An anti-wear structure 3 is clamped between the grinding roller shaft 1 and the bearing ring 2. The anti-wear structure 3 comprises an anti-wear support 31 and a shaft outer dynamic pressing part 32 matched with the anti-wear support 31. The anti-wear support 31 is located between the clamping cavity of the grinding roller shaft 1 and the bearing ring 2. The outer surface of the grinding roller shaft 1 is provided with a groove 11, and the shaft outer dynamic pressing part 32 is embedded in the groove 11. When the grinding roller shaft 1 rotates, the anti-wear support 31 is extruded by the shaft outer dynamic pressing part 32, so that the bearing ring 2 is tightly supported on the outside of the grinding roller shaft 1.

[0034] Please refer to Figure 2 and Figure 3The anti-wear support 31 in the embodiment is flat, and the two sides are arc surfaces. The inner ring wall of the middle lining ring 22 is provided with a first protrusion 24 for limiting the position of the extrusion block 311. The shaft outer dynamic pressure piece 32 comprises a first angular corner 321 and a first arc extrusion part 322 which are integrally connected. The first angular corner 321 is embedded in the angular groove 11, and the first arc extrusion part 322 abuts against the arc surface of the extrusion block 311. When the mill roller shaft 1 is driven to rotate, the shaft outer dynamic pressure piece 32 rotates synchronously with the mill roller shaft 1, and then the first arc extrusion part 322 can press the arc surface of the extrusion block 311, so that the extrusion block 311 tightly supports the bearing ring 2, thereby reducing the contact area between the mill roller shaft 1 and the bearing ring 2, and further reducing wear. At the same time, the first arc extrusion part 322 presses the extrusion block 311, so that the anti-wear support 31 can always adhere to the bearing ring 2 according to the wear condition, and is not affected by the degree of wear, so that the mill roller shaft 1 and the bearing ring 2 remain stable.

[0035] Embodiment Two

[0036] Please refer to Figure 5 、 Figure 6 、 Figure 7 and Figure 8 , the anti-wear support 31 in the embodiment comprises a positioning pin shaft 313 and a rotating pressure block 312 which is rotatably connected to the outside of the positioning pin shaft 313. The two ends of the positioning pin shaft 313 are fixed to the upper lining ring 21 and the lower lining ring 23 of the bearing ring 2, respectively. The rotating pressure block 312 is provided with a second arc extrusion part 314 which is symmetrically centered on the positioning pin shaft 313. The shaft outer dynamic pressure piece 32 comprises a second angular corner 323, a first clamping part 324 and a third arc extrusion part 325 which are integrally connected. The second angular corner 323 is embedded in the angular groove 11, and the first clamping part 324 is attached to the outer surface of the mill roller shaft 1. The third arc extrusion part 325 abuts against the second arc extrusion part 314 of the rotating pressure block 312. When the mill roller shaft 1 is driven to rotate, the shaft outer dynamic pressure piece 32 rotates synchronously with the mill roller shaft 1, and then the first clamping part 324 can keep the shaft outer dynamic pressure piece 32 stable, and the third arc extrusion part 325 can press the second arc extrusion part 314 of the rotating pressure block 312, so that the rotating pressure block 312 can rotate around the positioning pin shaft 313, and then the other side of the second arc extrusion part 314 can tightly support the bearing ring 2, thereby reducing the contact area between the mill roller shaft 1 and the bearing ring 2, and further reducing wear. At the same time, the third arc extrusion part 325 presses the second arc extrusion part 314, and the second arc extrusion part 314 presses the bearing ring 2, so that the anti-wear support 31 can always adhere to the bearing ring 2 according to the wear condition, and is not affected by the degree of wear, so that the mill roller shaft 1 and the bearing ring 2 remain stable.

[0037] Embodiment Three

[0038] Please refer to Figure 9 、 Figure 10 、 Figure 11、 Figure 12 With Figure 13 The anti-abrasion support 31 in the embodiment comprises a first arc-shaped pressing plate 315 and a second arc-shaped pressing plate 316, the first arc-shaped pressing plate 315 is attached to the outer surface of the grinding roller shaft 1, the second arc-shaped pressing plate 316 is attached to the inner ring wall of the intermediate liner ring 22, the side of the first arc-shaped pressing plate 315 facing the second arc-shaped pressing plate 316 is fixed with a first support 317, the side of the second arc-shaped pressing plate 316 facing the first arc-shaped pressing plate 315 is fixed with a second support 318, the first support 317 and the second support 318 are slidingly connected, the inner side of the first support 317 and the second support 318 are both rotationally connected with a roller 319, the inner ring wall of the intermediate liner ring 22 is provided with a first protrusion 24 for stopping the second arc-shaped pressing plate 316, the outer surface of the grinding roller shaft 1 is provided with a second protrusion 12 for stopping the first arc-shaped pressing plate 315, the shaft outer dynamic pressing piece 32 comprises a third corner 326, a second clamping portion 327 and a hook-shaped extruding portion 328 which are integrally connected, the third corner 326 is embedded in the corner groove 11, the second clamping portion 327 is attached to the outer surface of the grinding roller shaft 1, the hook-shaped extruding portion 328 extends to between the two rollers 319 on the first support 317 and the second support 318, when the grinding roller shaft 1 is driven to rotate, the shaft outer dynamic pressing piece 32 rotates synchronously with the grinding roller shaft 1, then the second clamping portion 327 can keep the shaft outer dynamic pressing piece 32 stable, the hook-shaped extruding portion 328 presses the two rollers 319 on the first support 317 and the second support 318, under the sliding limit of the first support 317 and the second support 318, the distance between the first arc-shaped pressing plate 315 and the second arc-shaped pressing plate 316 is increased, then the second arc-shaped pressing plate 316 can tighten the bearing ring 2 and the first arc-shaped pressing plate 315 can tighten the grinding roller shaft 1, so as to reduce the contact area between the grinding roller shaft 1 and the bearing ring 2, and then reduce the abrasion between the grinding roller shaft 1 and the bearing ring 2, at the same time, the hook-shaped extruding portion 328 presses the two rollers 319 on the first support 317 and the second support 318, so that the anti-abrasion support 31 can always be attached to the bearing ring 2 according to the abrasion condition, and is not affected by the degree of abrasion, so that the grinding roller shaft 1 and the bearing ring 2 can be kept stable.

[0039] The above only describes the preferred embodiment of the present application and should not be used to limit the present application, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A wear-resistant structure for a vertical mill grinding roller, comprising a grinding roller shaft (1) and a bearing ring (2) sleeved on the outside of the grinding roller shaft (1), wherein the bearing ring (2) comprises an upper bushing (21), an intermediate bushing (22), and a lower bushing (23) integrally connected, characterized in that, An anti-wear structure (3) is clamped between the grinding roller shaft (1) and the bearing ring (2). The anti-wear structure (3) includes an anti-wear support (31) and an external dynamic pressure member (32) that matches the anti-wear support (31). The anti-wear support (31) is located between the grinding roller shaft (1) and the bearing ring (2). A groove (11) is provided on the outer surface of the grinding roller shaft (1). The external dynamic pressure member (32) is embedded in the groove (11). When the grinding roller shaft (1) rotates, the external dynamic pressure member (32) squeezes the anti-wear support (31), thereby making the bearing ring (2) tightly supported outside the grinding roller shaft (1). The wear-resistant support (31) includes a positioning pin (313) and a rotating pressure block (312) rotatably connected to the outside of the positioning pin (313). The two ends of the positioning pin (313) are respectively fixed to the upper bushing (21) and the lower bushing (23) of the bearing ring (2). The rotating pressure block (312) is provided with a second arc-shaped extrusion part (314) symmetrical about the center of the positioning pin (313). The external dynamic pressure component (32) includes an integrally connected second ridge (323), a first locking part (324) and a third arc-shaped extrusion part (325). The second ridge (323) is embedded in the ridge groove (11), the first locking part (324) is attached to the outer surface of the grinding roller shaft (1), and the third arc-shaped extrusion part (325) abuts against the second arc-shaped extrusion part (314) of the rotating pressure block (312).

2. A wear-resistant structure for a vertical mill grinding roller, comprising a grinding roller shaft (1) and a bearing ring (2) sleeved on the outside of the grinding roller shaft (1), wherein the bearing ring (2) comprises an upper bushing (21), an intermediate bushing (22), and a lower bushing (23) integrally connected, characterized in that, An anti-wear structure (3) is clamped between the grinding roller shaft (1) and the bearing ring (2). The anti-wear structure (3) includes an anti-wear support (31) and an external dynamic pressure member (32) that matches the anti-wear support (31). The anti-wear support (31) is located between the grinding roller shaft (1) and the bearing ring (2). A groove (11) is provided on the outer surface of the grinding roller shaft (1). The external dynamic pressure member (32) is embedded in the groove (11). When the grinding roller shaft (1) rotates, the external dynamic pressure member (32) squeezes the anti-wear support (31), thereby making the bearing ring (2) tightly supported outside the grinding roller shaft (1). The wear-resistant support (31) includes a first arc-shaped pressure plate (315) and a second arc-shaped pressure plate (316). The first arc-shaped pressure plate (315) is in contact with the outer surface of the grinding roller shaft (1), and the second arc-shaped pressure plate (316) is in contact with the inner ring wall of the intermediate bushing (22). A first bracket (317) is fixed on the side of the first arc-shaped pressure plate (315) facing the second arc-shaped pressure plate (316), and a second bracket (318) is fixed on the side of the second arc-shaped pressure plate (316) facing the first arc-shaped pressure plate (315). The first bracket (317) and the second bracket (318) are slidably connected, and rollers (319) are rotatably connected to the inner sides of both the first bracket (317) and the second bracket (318). The inner ring wall of the intermediate bushing (22) is provided with a first protrusion (24) that stops the second arc-shaped pressure plate (316), and the outer surface of the grinding roller shaft (1) is provided with a second protrusion (12) that stops the first arc-shaped pressure plate (315). The external dynamic pressure component (32) includes an integrally connected third ridge (326), a second locking part (327), and a hook-shaped extrusion part (328). The third ridge (326) is embedded in the ridge groove (11), the second locking part (327) is attached to the outer surface of the grinding roller shaft (1), and the hook-shaped extrusion part (328) extends between the two rollers (319) on the first bracket (317) and the second bracket (318).

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