Loose connection structure of lining plate of vertical mill

Abstract

The utility model relates to a vertical mill lining plate technical field especially vertical mill lining plate anti -loose connection structure, including lining plate body, still including bolt column body and close curved block, the bottom of lining plate body is pasted and is provided with vertical mill mounting face, the upper end surface of lining plate body is provided with recess, the screw hole of intercommunication is passed in between lining plate body and vertical mill mounting face and is provided with, the bolt column body is screw connected in screw hole, the upper end of bolt column body is passed into recess and is fixedly connected with bolt head, the upper end of bolt head is provided with close curved block, the utility model discloses the connecting contact surface is changed into plane from curved surface, is favorable to the close fixedly, is not easy to produce loosening, utilizes recess cooperation close curved block to hide bolt head, makes it avoid and material between the friction collision, reduces bolt loosening, and protects bolt extension service life, and the support of hexagon nut is supported through the support plate under the control of adjusting mechanism, prevents its loosening and falling.

Description

Technical Field

[0001] This utility model relates to the field of vertical mill liner technology, and in particular to the anti-loosening connection structure of vertical mill liner. Background Technology

[0002] Vertical roller mills are large-scale industrial grinding equipment that are highly efficient and energy-saving. They are mainly used for crushing and grinding solid materials in industries such as cement, power, metallurgy, and chemicals. Their core feature is that they achieve material crushing through vertical structure rather than impact crushing. Common types of vertical roller mills include cone roller mills, disc roller mills, and swing roller mills. They contain important components such as grinding discs and liners.

[0003] However, the existing vertical mill's liner and body mounting surfaces are curved, while the bolt heads that fasten them are flat. This results in poor contact between the two, making the connection prone to loosening due to vibrations generated during equipment operation. Furthermore, the bolt head ends are exposed on the liner surface, causing frequent and intense collisions and friction with the material during vertical mill operation, further exacerbating the loosening of the connection, causing bolt wear, reducing service life, and affecting the normal operation of the vertical mill.

[0004] Therefore, the existing fastening bolts of the vertical mill liner are prone to loosening due to vibrations generated during equipment operation. Furthermore, the bolt heads are exposed on the liner surface, which frequently and violently collide and rub against the material, further aggravating the loosening and causing bolt wear, reducing service life and affecting the normal operation of the vertical mill. To address this issue, an anti-loosening connection structure for the vertical mill liner can be designed. Utility Model Content

[0005] In order to overcome the problem that the fastening bolts of the existing vertical mill liner are prone to loosening due to the vibration generated by the operation of the equipment, and that the bolt head is exposed on the liner surface, which is subject to frequent and violent collisions and friction with the material, further aggravating the loosening of the connection, causing bolt wear, reducing service life, and affecting the normal operation of the vertical mill.

[0006] The technical solution of this utility model is as follows: a vertical mill liner anti-loosening connection structure, including a liner body; also including a bolt column and a closed curved block, the bottom of the liner body is fitted with a vertical mill mounting surface, the upper end face of the liner body is provided with a groove, a threaded hole is provided through the liner body and the vertical mill mounting surface, the bolt column is threadedly connected in the threaded hole, the upper end of the bolt column passes into the groove and is fixedly connected with a bolt head, the upper end of the bolt head is provided with a closed curved block, the bottom of the vertical mill mounting surface is fixedly connected with a support frame, the lower end of the bolt head movably passes through the support frame and is threadedly connected with a hexagonal nut, two support plates are symmetrically arranged on both sides of the bottom of the hexagonal nut, a fixing plate is fixedly connected to the bottom of the vertical mill mounting surface and on both sides of the support frame, an adjustment mechanism is provided between the two fixing plates, the adjustment mechanism is used to adjust the relative position of the two support plates.

[0007] Preferably, during the fixed installation between the liner body and the vertical mill mounting surface, the liner body is attached to the corresponding position on the surface of the vertical mill mounting surface. By turning the bolt head, the bolt column is rotated, and the bolt column is threaded into the threaded hole connecting the liner body and the vertical mill mounting surface. The bottom of the bolt column passes through the support frame, and then the hexagonal nut is threaded onto the outside of the bolt column. The support plate is moved to fit the lower surface of the hexagonal nut using the adjustment mechanism to provide support. Then, the closed bevel block is attached to the bolt head, and the closed bevel block is hidden in the groove opened on the surface of the liner body, completing the installation.

[0008] Preferably, the upper surface of the closed curved block is continuous with the curved surface of the liner body, and the bottom of the closed curved block, the bottom of the groove, and the bottom of the support frame are set as mutually parallel planes.

[0009] Preferably, a magnetic ring 1 is fixedly connected to the upper end of the bolt head, and an annular slot adapted to the insertion of the magnetic ring 1 is opened at the bottom of the closed block, and a magnetic ring 2 is fixedly connected to the top of the annular slot.

[0010] Preferably, a through hole is provided between the bolt body and the bolt head, and a stop bar is movably installed in the through hole.

[0011] Preferably, the adjustment mechanism includes a bidirectional screw and a rotating wheel; the bidirectional screw is rotatably connected between two fixed plates, one end of each of the two support plates is symmetrically threaded to the outer ends of the bidirectional screw, and a rotating wheel is rotatably connected to the surface of one fixed plate, and the rotating wheel is fixedly connected to the bidirectional screw via a rotating shaft.

[0012] Preferably, a guide rod is fixedly connected between the two fixed plates, and the other ends of the two support plates are symmetrically and movably connected to the outer ends of the guide rod.

[0013] Preferably, a plug rod is fixedly connected to the middle of one end of the two support plates that are relatively close to each other, and the surface of the bolt column is provided with a plug hole corresponding to the position of the plug rod.

[0014] The beneficial effects of this utility model are: The device employs a connection structure consisting of a bolt column, bolt head, closed curved block, support frame, and hexagonal nut. The bolt column, bolt head, and hexagonal nut, along with other contact surfaces, transition from curved to flat surfaces. This facilitates a tighter fit and fixation, reducing the likelihood of loosening. Furthermore, grooves on the surface of the liner and the closed curved block conceal the bolt head, preventing friction and collision with the material. This effectively reduces the possibility of bolt loosening, protects the bolt, and extends its service life. Additionally, a support plate controlled by an adjustment mechanism supports the hexagonal nut, preventing it from loosening and falling, thus improving connection stability. Attached Figure Description

[0015] Figure 1 The diagram shown is a three-dimensional structural schematic of the present invention. Figure 2 The diagram shown is a partial block structure of this utility model. Figure 1 ; Figure 3 The diagram shown is a partial block structure of this utility model. Figure 2 ; Figure 4 The diagram shown is a partial cross-sectional view of the present invention. Figure 5 The diagram shown is a partial cut-out of the upper part of the liner body of this utility model. Figure 6 The diagram shown is a three-dimensional structural representation of the bolted column connection of this utility model. Figure 1 ; Figure 7 The diagram shown is a three-dimensional structural representation of the bolted column connection of this utility model. Figure 2 ; Figure 8 The diagram shown is a three-dimensional structural schematic of the closed curved block of this utility model; Figure 9 The diagram shown is a schematic representation of the distribution structure of the adjustment mechanism of this utility model.

[0016] Explanation of reference numerals in the attached drawings: 1. Liner body; 2. Vertical mill mounting surface; 3. Groove; 4. Threaded hole; 5. Bolt column; 6. Bolt head; 7. Closed curved block; 8. Support frame; 901. Bidirectional screw; 902. Rotary wheel; 10. Hexagonal nut; 11. Fixing plate; 12. Magnetic ring one; 13. Annular slot; 14. Magnetic ring two; 15. Through hole; 16. Abutment rod; 17. Insert rod; 18. Insertion hole; 19. Support plate; 20. Guide rod. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Please see Figures 1-9 This utility model provides an embodiment of a vertical mill liner anti-loosening connection structure, including a liner body 1; it also includes a bolt column 5 and a closing bevel block 7. The bottom of the liner body 1 is fitted with a vertical mill mounting surface 2. A groove 3 is formed on the upper end surface of the liner body 1. A threaded hole 4 is formed between the liner body 1 and the vertical mill mounting surface 2. The bolt column 5 is threaded into the threaded hole 4. The upper end of the bolt column 5 passes into the groove 3 and is fixedly connected to a bolt head 6. A closing bevel block 7 is provided at the upper end of the bolt head 6. A support frame 8 is fixedly connected to the bottom of the vertical mill mounting surface 2. The lower end of the bolt head 6 movably passes through the support frame 8 and is threadedly connected to a hexagonal nut 10. Two support plates 19 are symmetrically arranged on both sides of the bottom of the hexagonal nut 10. The bottom of the vertical mill mounting surface 2 is located at the support frame 8. Fixed plates 11 are fixedly connected to both sides of the liner body 19. An adjustment mechanism is provided between the two fixed plates 11. The adjustment mechanism is used to adjust the relative position of the two support plates 19. When fixing the liner body 1 and the vertical mill mounting surface 2, the liner body 1 is attached to the corresponding position on the surface of the vertical mill mounting surface 2. The bolt head 6 is turned to drive the bolt column 5 to rotate. The bolt column 5 is threaded into the threaded hole 4 that connects the liner body 1 and the vertical mill mounting surface 2. The bottom of the bolt column 5 passes through the support frame 8. Then, the hexagonal nut 10 is threaded onto the outside of the bolt column 5. The adjustment mechanism is used to adjust the movement of the support plate 19 to fit the lower surface of the hexagonal nut 10 for support. Then, the closed curved block 7 is attached to the bolt head 6. The closed curved block 7 is hidden in the groove 3 opened on the surface of the liner body 1 to complete the installation.

[0019] Please see Figure 4 and Figures 6-8In this embodiment, the upper surface of the closed curved block 7 is continuous with the curved surface of the liner body 1. The bottom of the closed curved block 7, the bottom of the groove 3, and the bottom of the support frame 8 are set as mutually parallel planes. After the closed curved block 7 is hidden in the groove 3, its surface is continuous with the surface of the liner body 1, thereby avoiding friction and collision with the material during the abrasive process. The bottom of the closed curved block 7, the bottom of the groove 3, and the bottom of the support frame 8 are parallel planes, which facilitates the stable placement and fixation of the bolt column 5, the bolt head 6, and the hexagonal nut 10. A magnetic ring 12 is fixedly connected to the upper end of the bolt head 6, and an annular slot adapted for the insertion of the magnetic ring 12 is opened at the bottom of the closed curved block 7. 13, and a magnetic ring 14 is fixedly connected to the top of the annular slot 13. The magnetic ring 12 is inserted into the annular slot 13 as an insert body, and the mutual attraction with the magnetic ring 14 strengthens the fixation between the closed curved block 7 and the bolt head 6, thereby preventing the closed curved block 7 from leaving the groove 3. A through hole 15 is opened between the bolt column 5 and the bolt head 6. A push rod 16 is movably installed in the through hole 15. When it is necessary to disassemble the bolt column 5, a push rod can be connected from the bottom of the bolt column 5 to push the push rod 16 upward. The push rod 16 is used to push out the closed curved block 7 first, and the bolt head 6 is exposed, which facilitates the disassembly of the bolt column 5.

[0020] Please see Figure 3 , Figure 4 , Figure 7 and Figure 9 In this embodiment, the adjusting mechanism includes a bidirectional screw 901 and a rotating wheel 902. The bidirectional screw 901 is rotatably connected between two fixed plates 11. One end of each of the two support plates 19 is symmetrically threaded onto the outer ends of the bidirectional screw 901. A rotating wheel 902 is rotatably connected to the surface of one fixed plate 11, and the rotating wheel 902 is fixedly connected to the bidirectional screw 901 via a rotating shaft. Rotating the rotating wheel 902 drives the bidirectional screw 901 to rotate, causing the two fixed plates 11 to move closer together, thereby moving the two fixed plates 11 to the bottom of the hexagonal nut 10 to abut against it, preventing damage during operation. The resulting vibration causes the hexagonal nut 10 to loosen and fall off. A guide rod 20 is also fixedly connected between the two fixed plates 11. The other ends of the two support plates 19 are symmetrically and movably connected to the outer ends of the guide rod 20. The guide rod 20 plays a stable guiding role in controlling the movement of the two fixed plates 11. A plug rod 17 is fixedly connected to the middle of the relatively close ends of the two support plates 19. The surface of the bolt column 5 is provided with a corresponding insertion hole 18. When the two fixed plates 11 abut against the hexagonal nut 10, the plug rod 17 is also inserted into the bolt column 5 through the insertion hole 18, which limits the inner abutment rod 16 and prevents it from falling downward.

[0021] During installation, the liner body 1 is attached to the corresponding position on the mounting surface 2 of the vertical mill. Tightening the bolt head 6 rotates the bolt column 5, which is threaded into the threaded hole 4 connecting the liner body 1 and the mounting surface 2. The bottom of the bolt column 5 passes through the support frame 8. A hexagonal nut 10 is then threaded onto the outside of the bolt column 5 and abuts against the surface of the support frame 8. A pre-inserted abutment rod 16 is inserted into the bolt column 5. Then, using the adjustment mechanism, the rotating wheel 902 drives the bidirectional screw 90... 1. Rotation causes the bidirectional screw 901 to move the two fixing plates 11 closer together, so that the two fixing plates 11 move to the bottom of the hexagonal nut 10 and abut against it. At the same time, the two insert rods 17 are also inserted into the bolt column 5 through the insert hole 18 to limit the inner abutment rod 16 and prevent it from falling downward. Finally, the closed curved block 7 is attached to the bolt head 6, the magnetic ring 12 is inserted into the annular slot 13 and attracts each other with the magnetic ring 14. The closed curved block 7 is hidden in the groove 3 opened on the surface of the liner body 1, and the installation is completed.

[0022] Through the above steps, the connection structure achieves the effect of transforming the curved surfaces of the bolt column 5, bolt head 6, and hexagonal nut 10 into flat surfaces with other contact surfaces, which is conducive to tighter fitting and fixation and less prone to loosening. The groove 3 and closed curved block 7 on the surface of the liner body 1 are used to cover the bolt head 6, preventing it from rubbing and colliding with the material, effectively reducing the possibility of loosening of the fastening bolt, protecting the bolt, and extending its service life. In addition, the support plate 19 under the control of the adjustment mechanism supports the hexagonal nut 10 to prevent it from loosening and falling off, improving the stability of the connection. This solves the problem that the fastening bolts of the existing vertical mill liner are prone to loosening due to the vibration generated by the operation of the equipment, and the bolt head is exposed on the liner surface, which is subject to frequent and violent collisions and friction with the material, further aggravating the loosening of the connection, causing bolt wear, reducing service life, and affecting the normal operation of the vertical mill.

Claims

1. A vertical mill liner anti-loosening connection structure, comprising a liner body (1); characterized in that: It also includes a bolt column (5) and a closed curved block (7). The bottom of the liner body (1) is fitted with a vertical mill mounting surface (2). The upper end of the liner body (1) is provided with a groove (3). A threaded hole (4) is provided between the liner body (1) and the vertical mill mounting surface (2). The bolt column (5) is threadedly connected to the threaded hole (4). The upper end of the bolt column (5) is inserted into the groove (3) and fixedly connected with a bolt head (6). The upper end of the bolt head (6) is provided with a closed curved block (7). 7) A support frame (8) is fixedly connected to the bottom of the vertical mill mounting surface (2). The lower end of the bolt head (6) moves through the support frame (8) and is threaded with a hexagonal nut (10). Two support plates (19) are symmetrically arranged on both sides of the bottom of the hexagonal nut (10). Fixed plates (11) are fixedly connected to the bottom of the vertical mill mounting surface (2) and on both sides of the support frame (8). An adjustment mechanism is provided between the two fixed plates (11). The adjustment mechanism is used to adjust the relative position of the two support plates (19).

2. The anti-loosening connection structure for vertical mill liners according to claim 1, characterized in that: The upper surface of the closed curved block (7) is continuous with the curved surface of the liner body (1), and the bottom of the closed curved block (7), the bottom of the groove (3) and the bottom of the support frame (8) are set as mutually parallel planes.

3. The anti-loosening connection structure for vertical mill liners according to claim 1, characterized in that: A magnetic ring 1 (12) is fixedly connected to the upper end of the bolt head (6), and an annular slot (13) adapted to the insertion of the magnetic ring 1 (12) is opened at the bottom of the closed curved block (7), and a magnetic ring 2 (14) is fixedly connected to the top of the annular slot (13).

4. The anti-loosening connection structure for vertical mill liners according to claim 1, characterized in that: A through hole (15) is provided between the bolt column (5) and the bolt head (6), and a stop rod (16) is movably provided in the through hole (15).

5. The anti-loosening connection structure for vertical mill liners according to claim 1, characterized in that: The adjustment mechanism includes a bidirectional screw (901) and a rotating wheel (902); the bidirectional screw (901) is rotatably connected between two fixed plates (11), and one end of two support plates (19) is symmetrically threaded to the outer sides of both ends of the bidirectional screw (901). The rotating wheel (902) is rotatably connected to the surface of one fixed plate (11), and the rotating wheel (902) is fixedly connected to the bidirectional screw (901) through a rotating shaft.

6. The anti-loosening connection structure for vertical mill liners according to claim 5, characterized in that: A guide rod (20) is fixedly connected between the two fixed plates (11), and the other ends of the two support plates (19) are symmetrically and movably connected to the outer sides of the two ends of the guide rod (20).

7. The anti-loosening connection structure for vertical mill liners according to claim 1, characterized in that: Two support plates (19) are fixedly connected to the middle of one end of each other, and the bolt column (5) has a corresponding insertion hole (18) on its surface.

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