Efficient bolt dismounting and mounting device for large ball mill

Abstract

The utility model relates to an efficient bolt dismounting and mounting device for a large ball mill, which belongs to the field of mill maintenance auxiliary equipment and comprises a mill platform, a guide rail and a pneumatic hammer component. The guide rail is parallel to the axis of the mill and is fixed on the mill platform; the pneumatic hammer assembly comprises a sliding block, a pneumatic hammer fixing assembly and a pneumatic hammer. The sliding block is connected with the guide rail in a sliding mode, and the pneumatic hammer is fixed to the sliding block through the pneumatic hammer fixing assembly. Each pneumatic hammer is provided with a sliding block, or all pneumatic hammers share one sliding block, and the guide rail is detachably fixed to the mill platform; according to the utility model, the bolts on the mill can be quickly disassembled or assembled, the working efficiency is improved, the labor intensity of workers is reduced, and the height and angle of the pneumatic hammer can be finely adjusted in the use process, so that the pneumatic hammer is accurately positioned with the bolts.

Description

Technical Field

[0001] The utility model belongs to the field of auxiliary equipment for mill maintenance, and in particular relates to a high-efficiency bolt disassembly and assembly device for a large ball mill. Background Art

[0002] During the maintenance of large mills, it is necessary to dismantle or install the liner. At present, air cannons are usually used to dismantle or install the liner bolts one by one, which is inefficient. In addition, the dismantling of the bolts on the mill is usually done by manpower holding air cannons, which is labor-intensive.

[0003] Since there are a large number of bolts on the mill, the maintenance plan of manually removing or installing them one by one with a pneumatic gun is not only inefficient but also labor-intensive. Therefore, it is necessary to provide a method that can improve the efficiency of mill bolt removal and reduce labor intensity. Summary of the invention

[0004] In order to overcome the problems existing in the background technology, the utility model provides a large-scale ball mill high-efficiency disassembly and assembly bolt device, which can realize the rapid disassembly or installation of bolts on the mill, improve work efficiency, reduce manual labor intensity, and during use, the height and angle of the air cannon can be fine-tuned to accurately position the air cannon with the bolts.

[0005] To achieve the above purpose, the utility model is implemented through the following technical solutions:

[0006] The large-scale ball mill efficient disassembly and assembly bolt device comprises a mill platform, a guide rail and a pneumatic gun assembly; the guide rail is parallel to the axis of the mill and is fixed on the mill platform; the pneumatic gun assembly comprises a slider, a pneumatic gun fixing assembly and a pneumatic gun; the slider is slidably connected to the guide rail, and the pneumatic gun is fixed on the slider through the pneumatic gun fixing assembly; each pneumatic gun is provided with a slider, or all pneumatic guns share a slider.

[0007] Preferably, the guide rail and the grinding machine platform are detachably fixed.

[0008] Preferably, the guide rail is in an I-shape, and a bottom wing plate thereof is provided with bolts that are detachably fixed to the mill platform.

[0009] Preferably, the lower end surface of the slider is provided with a bayonet engaged with the upper wing plate of the guide rail, and the side wall of the bayonet of the slider is provided with a locking bolt A facing the side wall of the guide rail.

[0010] Preferably, the air cannon fixing assembly comprises two fixing plates, two clamping plates, adjusting bolts and locking nuts; the clamping plates comprise a middle arc plate and straight plates connected to both ends of the middle arc plate; the straight plate is provided with a waist hole; the fixing plate is provided with a bolt hole; the adjusting bolt passes through the waist hole on the straight plate and the bolt hole on the fixing plate, and locking nuts are respectively connected at both ends; the air cannon is clamped between the arc plates of the two clamping plates.

[0011] Preferably, each air gun is provided with a sliding block, and the bottom end of the fixing plate is fixed to the sliding block.

[0012] Preferably, all the air guns share one sliding block; the bottom end of the fixed plate is fixed to the sliding block.

[0013] Preferably, all air cannons share one slider, and a sleeve slider is provided between the air cannon fixing assembly and the slider; a sleeve slider is provided corresponding to each air cannon fixing assembly; the sleeve slider and the slider can be slidably sleeved; a locking bolt B is provided between the sleeve slider and the slider; and the bottom end of the fixing plate is fixed to the sleeve slider.

[0014] Beneficial effects of the utility model:

[0015] The utility model can realize the rapid disassembly or installation of the bolts on the grinding mill, improve the work efficiency, reduce the manual labor intensity, and can fine-tune the height and angle of the air cannon during use so that the air cannon is accurately positioned with the bolts; by connecting the guide rail to the grinding mill platform by bolts, the utility model can be completely disassembled by disassembling the guide rail, and can be reused to meet the maintenance needs of different grinding mills. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of Embodiment 1 of the present utility model;

[0017] Figure 2 It is a side view of embodiment 1 of the utility model;

[0018] Figure 3 yes Figure 2 A local enlarged view of point A;

[0019] Figure 4 It is a schematic diagram of the connection relationship between the air cannon fixing assembly and the slider in Example 1 of the utility model;

[0020] Figure 5 It is a schematic diagram of the connection relationship between the air cannon fixing assembly and the slider in Example 2 of the utility model;

[0021] Figure 6 It is a side view of the connection relationship between the air cannon fixing assembly and the sleeve sliding block of Example 3 of the utility model;

[0022] Figure 7 It is a cross-sectional view of the connection relationship between the air cannon fixing assembly and the sleeve sliding block of Example 3 of the utility model;

[0023] In the figure, 1-grinding machine platform, 2-guide rail, 3-grinding machine, 4-slider, 5-air cannon, 6-bolt, 7-locking bolt A, 8-fixing plate, 9-clamp, 10-adjusting bolt, 11-locking nut, 12-waist hole, 13-sleeve slider, 14-locking bolt B. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and beneficial effects of the present invention clearer, the preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings to facilitate understanding by technicians. Example 1

[0025] like Figure 1-4 As shown, the large ball mill high-efficiency bolt disassembly and assembly device comprises a mill platform 1, a guide rail 2 and a pneumatic cannon assembly.

[0026] The guide rail 2 is parallel to the axis of the mill 3 and fixed on the mill platform 1. The air gun assembly includes a slider 4, an air gun fixing assembly and an air gun 5. The slider 4 is slidably connected to the guide rail 2, and the air gun 5 is fixed on the slider 4 through the air gun fixing assembly.

[0027] The guide rail 2 is in an I-shape, and bolt holes are provided on the bottom wing plate thereof, and bolts are passed through the bolt holes to removably fix the guide rail 2 to the mill platform 1. The guide rail 2 may also be designed in a T-shape, and connecting wing plates are provided at both ends, and bolts 6 removably fixed to the mill platform 1 are provided on the connecting wing plates, and the guide rail 2 and the mill platform 1 are removably fixed by bolt connection. The removable connection between the guide rail 2 and the mill platform 1 allows the guide rail 2 to be disassembled after the overhaul is completed, and then the slider 4 and the air cannon assembly slidably connected to the guide rail 2 can be disassembled together; or when one mill is overhauled and another mill is overhauled, the utility model can be disassembled and installed on the mill platform 1 of the other mill for continued use. The lower end surface of the slider 4 is provided with a bayonet that engages with the upper wing plate of the guide rail 2, and the side wall of the bayonet of the slider 4 is provided with a locking bolt A7 that is opposite to the side wall of the guide rail 2. When the position adjustment of the slider 4 is completed, the locking bolt A7 is tightened so that the tail end of the locking bolt A7 is pressed against the upper wing plate of the guide rail 2, thereby locking the position of the slider 4; when the slider 4 needs to be moved, the locking bolt A7 is twisted and sent so that the tail end of the locking bolt A7 leaves the upper wing plate of the guide rail 2.

[0028] Each air cannon 5 is provided with a slider 4. By sliding the slider 4 along the guide rail 2, the spacing between the sliders 4 is adjusted, and then the spacing of the air cannons 5 is adjusted, so that the spacing of the air cannons 5 is consistent with the spacing of the bolts on the grinder 3, and multiple air cannons 5 can be used to remove the bolts at the same time. After removing or installing a row of bolts, the grinder 3 is rotated to continue removing or installing the next row of bolts. The utility model has a structure in which one slider 4 corresponds to one air cannon 5, and the spacing between the air cannons 5 can be adjusted by sliding the slider 4. In this way, when the grinder models and specifications are different and the bolt spacing changes, multiple air cannons 5 can be accurately removed or installed on the bolts on the grinder 3 by adjusting the spacing of the air cannons 5.

[0029] The air cannon fixing assembly includes two fixing plates 8, two clamping plates 9, adjusting bolts 10 and locking nuts 11. The clamping plate 9 includes a middle arc plate and a straight plate connected to both ends of the middle arc plate, and a waist hole 12 is provided on the straight plate. Bolt holes are provided on the fixing plate 8, and the adjusting bolts 10 pass through the waist hole 12 on the straight plate and the bolt holes on the fixing plate 8, and the locking nuts 11 are connected at both ends respectively, and the air cannon 5 is clamped between the arc plates of the two clamping plates 9. By setting the waist hole 12, the relative height of the clamping plate 9 and the fixing plate 8 can be adjusted, and then the height of the air cannon 5 can be adjusted. The specific adjustment method is: loosen the locking nut 11, pull up or push down the clamping plate 9, adjust the relative length of the clamping plate 9 and the fixing plate 8, and after the adjustment is completed, tighten the retraction nut 11 to fix the position of the clamping plate 9 and the fixing plate 8. After the guide rail 2 is fixed, the distance between the guide rail 2 and the mill 3 in the horizontal direction is fixed. If the guide rail 2 is too far or too close to the mill 3, the force end of the air cannon 5 will not be aligned with the bolt on the mill 3. By adjusting the height of the air cannon 5, the relative position of the air cannon 5 and the bolt on the mill 3 can be adjusted. In addition, the utility model clamps the air cannon 5 with the clamping plates 9, and the clamping degree of the two clamping plates 9 on the air cannon 5 can be adjusted, so that the air cannon 5 has a certain adjustment angle space, and after the angle of the air cannon 5 is fine-tuned, the air cannon 5 can be clamped by tightening the loose locking nut 11, so that the angle of the air cannon 5 is more conducive to the removal or installation of the bolts on the mill 3.

[0030] The utility model can set 3-5 air cannons 5 on the guide rail 2. When removing or installing the bolts on the grinder 3, the air cannons 5 are fixed and the grinder 3 is rotated. After the bolts of the grinder 3 and the air cannons 5 are removed or installed, the position of the air cannons 5 is moved and re-fixed, and the grinder 3 is continued to be rotated to remove or install the bolts on the grinder 3. Example 2

[0031] The difference between this embodiment and embodiment 1 is that all the air guns of the utility model share a slider 4, as shown in the attached Figure 5 As shown, the fixing plates 8 of all the air cannon fixing assemblies are welded to the same slide block 4 .

[0032] In this embodiment, when removing or installing the bolts on the mill 3, the position of the air cannon 5 can be adjusted by moving the slider 4 along the guide rail 2. After removing a row of bolts on the mill 3 in the axial direction, the mill 3 can be rotated. That is, in the process of removing or installing the bolts on the mill, the air cannon 5 is moved first, and after removing a row of bolts, the mill 3 can be rotated. The disadvantage of this embodiment is that the spacing of the air cannon 5 cannot be adjusted, so it can only be used when the spacing of the bolts on the mill 3 is the same. Example 3

[0033] This embodiment is an improvement on the embodiment 2. Specifically, a sleeve slider 13 is further provided between the air gun fixing assembly and the slider 4; each air gun fixing assembly is provided with a sleeve slider 13. The sleeve slider 13 and the slider 4 can be slidably sleeved, and a locking bolt B14 is provided between the sleeve slider 13 and the slider 4. The connection method of the sleeve slider 13 and the slider 4 is the same as the connection method of the slider 4 and the upper wing plate of the guide rail 2. The bottom end of the fixing plate 8 is fixed to the sleeve slider 13, as shown in the attached figure. Figure 6 and attached Figure 7 shown.

[0034] The advantage of the utility model is that not only can the spacing of the air cannons 5 be adjusted (by adjusting the relative position of the sleeve slider 13 and the slider 4, and the position can be locked by the locking bolt B14 after adjustment), but also it is easier to move the air cannons 5 along the guide rail 2 when in use (by moving the slider 4, and locking the position with the retracting bolt A7 after moving).

[0035] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the utility model.

Claims

1. A high-efficiency bolt disassembly and assembly device for a large ball mill, characterized in that: The invention comprises a grinding mill platform (1), a guide rail (2) and a blast chamber assembly; the guide rail (2) is parallel to the axis of the grinding mill (3) and is fixed on the grinding mill platform (1); the blast chamber assembly comprises a slider (4), a blast chamber fixing assembly and a blast chamber (5); the slider (4) is slidably connected to the guide rail, and the blast chamber is connected to the slider (4) via the blast chamber fixing assembly; each blast chamber is provided with a slider (4), or all blast chambers share a slider (4).

2. The high-efficiency bolt disassembly and assembly device for a large ball mill according to claim 1 is characterized in that: The guide rail (2) and the grinding machine platform (1) are detachably fixed.

3. The high-efficiency bolt disassembly and assembly device for a large ball mill according to claim 2 is characterized in that: The guide rail (2) is in an I-shape, and a bottom wing plate thereof is provided with bolts (6) that are detachably fixed to the grinding machine platform (1).

4. The high-efficiency bolt disassembly and assembly device for a large ball mill according to claim 3 is characterized in that: The lower end surface of the slider (4) is provided with a bayonet that engages with the upper wing plate of the guide rail (2), and the side wall of the bayonet of the slider (4) is provided with a locking bolt A (7) that faces the side wall of the guide rail (2).

5. The high-efficiency bolt disassembly and assembly device for a large ball mill according to any one of claims 1 to 4, characterized in that: The wind gun fixing assembly comprises two fixing plates (8), two clamping plates (9), an adjusting bolt (10) and a locking nut (11); the clamping plate (9) comprises a middle arc plate and straight plates connected to both ends of the middle arc plate; the straight plate is provided with a waist hole (12); the fixing plate (8) is provided with a bolt hole; the adjusting bolt (10) passes through the waist hole (12) on the straight plate and the bolt hole on the fixing plate (8), and the two ends are respectively connected to the locking nuts (11); the wind gun (5) is clamped between the arc plates of the two clamping plates (9).

6. The high-efficiency bolt disassembly and assembly device for a large ball mill according to claim 5 is characterized in that: Each air gun is provided with a sliding block (4), and the bottom end of the fixing plate (8) is fixedly connected to the sliding block (4).

7. The high-efficiency bolt disassembly and assembly device for a large ball mill according to claim 5, characterized in that: All the air guns share a sliding block (4); the bottom end of the fixing plate (8) is fixedly connected to the sliding block (4).

8. The high-efficiency bolt disassembly and assembly device for a large ball mill according to claim 5, characterized in that: All the air guns share a slider (4), and a sleeve slider (13) is provided between the air gun fixing assembly and the slider (4); each air gun fixing assembly is provided with a corresponding sleeve slider (13); the sleeve slider (13) and the slider (4) are slidably sleeved; a locking bolt B (14) is provided between the sleeve slider (13) and the slider (4); and the bottom end of the fixing plate (8) is fixedly connected to the sleeve slider (13).

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