Drilling device for mounting lining plate of steel ball mill

Abstract

The invention discloses a drilling device for a mounting lining plate of a steel ball mill, and relates to the technical field of lining plate machining, the drilling device comprises a liftable mounting shell and a plurality of drill bits, the drill bits are linked through a driving mechanism, an annular limiting groove is matched with a movable abutting block, and stable work or quick release and replacement of the drill bits are achieved; according to the lining plate drilling device, through the two drill bits arranged on the mounting shell, simultaneous double-hole drilling of a lining plate is achieved, the operation efficiency of batch lining plate drilling is greatly improved, in addition, through the attaching and separating design of the abutting block and the annular limiting groove, the drill bit structure can be stably fixed during drilling, efficient and stable drilling operation is ensured, and the drilling efficiency is improved. When the damaged drill bit needs to be replaced, the drill bit can be rapidly and efficiently replaced through simple driving operation, one drill bit or two drill bits can be synchronously replaced, meanwhile, the abutting block can intermittently make contact with the annular limiting groove in the square rod to generate vibration, chippings are removed, preparation is made for the next batch of operation, and the overall efficiency is further improved.

Description

Technical Field

[0001] The invention belongs to the technical field of lining plate processing, and in particular relates to a lining plate drilling device for installing a steel ball mill. Background Art

[0002] During the liner processing, in order to make the liner firmly fixed on the cylinder, it is usually necessary to drill holes on the surface of the liner by a drilling device so as to install fasteners such as bolts. However, traditional drilling devices often use a single drill head design, which will lead to low drilling efficiency when a large number of liners need to be drilled. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a steel ball mill installation liner drilling device that can overcome the above problems or at least partially solve the above problems.

[0004] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is: a steel ball mill installation liner drilling device, comprising a processing table and a lifting and lowering installation shell arranged above the processing table, the installation shell is provided with a rotatable drill bit; when the drill bits are multiple, the installation shell is connected with installation cavities on both sides, the top of the installation shell is provided with multiple circular holes 1, the bottom of the installation shell is provided with circular holes 2 corresponding to the circular holes 1, the inner wall of the circular hole 1 is fitted with an upper installation column, the surface of the upper installation column is fixedly connected with a circular block fitted with the top of the installation shell, and the bottom of the upper installation column is fixedly connected with a The installation cavity corresponds to a square rod, and the bottom of the square rod is fixedly connected to a lower installation column that fits with the second inner wall of the circular hole, and the drill bit is fixedly connected to the bottom of the lower installation column; it also includes a driving mechanism for linking the drill bits corresponding to each of the square rods to rotate simultaneously, and an annular limiting groove is provided on the square rod. A pair of resistance blocks that move relative to or oppositely at the same time are provided inside the installation cavity. When the two resistance blocks move relative to each other, the resistance blocks and the inner wall of the annular limiting groove are in a separated state, and when the two resistance blocks move oppositely, the resistance blocks and the inside of the annular limiting groove are in a fitted state.

[0005] Preferably, a pair of support blocks fixedly connected to the top of the processing table are provided below the mounting shell, and an L-shaped mounting frame is fixedly connected to the other opposite sides of the two support blocks, and a driving unit 1 is installed on the L-shaped mounting frame, and an output end of the driving unit 1 is fixedly connected to a contact plate that slides along the top of the support block.

[0006] Preferably, the top of the processing table is fixedly connected to an L-shaped fixing frame, a second driving unit is installed on the L-shaped fixing frame, an output end of the second driving unit is fixedly connected to a trapezoidal connecting frame, and the bottom of the trapezoidal connecting frame is fixedly connected to the top of the mounting shell.

[0007] Preferably, a pair of L-shaped limit blocks are fixedly connected to the back side of the installation shell, and the L-shaped limit blocks are provided with concave grooves that fit with the surface of the L-shaped fixing frame.

[0008] Preferably, the driving mechanism includes a driving part three installed on the top center of the mounting shell, the output end of the driving part three is fixedly connected to a large circular gear rotating inside the mounting cavity, the surface of the large circular gear is connected to a plurality of small circular gears that are adapted and correspond to the circular hole one, the top of the small circular gear is connected to the top wall of the mounting cavity through a bearing, and the small circular gear is connected to a square groove that fits the surface of the square rod.

[0009] Preferably, a pair of vertical plates are fixedly connected to the bottom wall of the installation cavity, each of the vertical plates is slidably connected to a transverse moving rod, one end of the transverse moving rod is fixedly connected to the interference block, an annular block is fixedly connected to the surface of the transverse moving rod, a first spring sleeved on the transverse moving rod is fixedly connected between the annular block and the vertical plate, the other end of the transverse moving rod is fixedly connected to a semicircular connecting block, and a toggle mechanism is linked between the two semicircular connecting blocks.

[0010] Preferably, the toggle mechanism includes a driving part four installed on the center of the bottom wall of the installation cavity, the output end surface of the driving part four is fixedly connected to a circular rotating block, and the surface of the circular rotating block is fixedly connected to a pair of arc-shaped toggle blocks distributed in a circle.

[0011] Preferably, when the arc-shaped toggle block is fitted with the semicircular connecting block, an air guide cylinder is fitted on the surface of the annular block, one end of the air guide cylinder is fixedly connected to one side of the vertical plate, the other end of the air guide cylinder is fixedly connected to a circular sealing plate sleeved on the transverse moving rod, the air guide cylinder is connected to an air pipe, and one end of the air pipe passing through the outside of the mounting shell is provided with a resistance piece for fitting against the top of the circular block.

[0012] Preferably, the resistance member includes a fixed shell connected to the corresponding end of the gas pipe, the inner wall of the fixed shell is fixedly connected to a second spring, the other end of the second spring is fixedly connected to a movable plate that fits the inner wall of the fixed shell, and the movable plate is fixedly connected to an L-shaped limiting plate that passes through the outside of the fixed shell.

[0013] Preferably, a pair of extension plates are fixedly connected to the bottom of the fixed shell, and the bottoms of the extension plates are fixedly connected to the top of the installation shell.

[0014] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0015] The present invention realizes the simultaneous double-hole drilling of the liner by means of the two drill bits arranged on the mounting shell, which greatly improves the operation efficiency of batch liner drilling. In addition, the fitting and separation design of the abutment block and the annular limiting groove can not only stably fix the drill bit structure during drilling to ensure efficient and stable drilling operation, but also can realize fast and efficient drill bit replacement through simple driving operation when the damaged drill bit needs to be replaced, and both single and two drill bits can be operated synchronously, which greatly improves the convenience of maintenance.

[0016] More importantly, when the abutment block fits with the annular limit groove, the gas inside the air cylinder is squeezed by the sliding annular block and transported to the inside of the fixed shell through the air pipe, which is used to drive the movable plate and the L-shaped limit plate to further stabilize the drill bit structure, thereby improving the drilling accuracy and operation stability. When the abutment block is separated from the annular limit groove, the driving mechanism can also rotate the two drill bits synchronously, and generate a slight vibration force through the intermittent contact of the abutment block, which effectively removes debris from the surface of the drill bit, prepares for the next batch of drilling operations, and further improves the overall operation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In the attached picture:

[0018] Figure 1 This is a front structural schematic diagram of a steel ball mill installation liner drilling device proposed by the present invention;

[0019] Figure 2 For the present invention Figure 1 Schematic diagram of the explosion structure of the drill bit and the mounting shell connection;

[0020] Figure 3 For the present invention Figure 1 A schematic diagram of the connection structure between the support block and the contact plate;

[0021] Figure 4 For the present invention Figure 1 Schematic diagram of the front cross-sectional structure of the installation shell;

[0022] Figure 5 For the present invention Figure 4 Schematic diagram of the connection structure between the circular pinion and the square rod;

[0023] Figure 6 For the present invention Figure 4 Schematic diagram of the connection structure between the abutment block and the annular limit groove Figure 1 ;

[0024] Figure 7 For the present invention Figure 6A schematic diagram of the cross-sectional structure of the gas guide cylinder;

[0025] Figure 8 For the present invention Figure 7 A local enlarged structural diagram of the part;

[0026] Fig. 9 For the present invention Figure 4 Schematic diagram of the connection structure between the abutment block and the annular limit groove Figure 2 ;

[0027] Fig.10 For the present invention Figure 6 Schematic diagram of the side section structure of the fixed shell;

[0028] Fig.11 For the present invention Fig.10 A schematic diagram of the local enlarged structure at B in FIG.

[0029] Fig.12 For the present invention Figure 1 Schematic diagram of the side view structure in.

[0030] In the figure: 1, processing table; 2, mounting shell; 21, mounting cavity; 22, circular hole 1; 23, circular hole 2; 24, upper mounting column; 25, circular block; 26, square rod; 27, lower mounting column; 28, annular limit groove; 29, resistance block; 210, vertical plate; 211, horizontal moving rod; 212, annular block; 213, first spring; 214, semicircular connecting block; 215, driving part 4; 216, circular rotating block; 217, arc-shaped toggle block; 218, air guide cylinder; 21 9. Circular sealing plate; 220. Air pipe; 221. Fixed shell; 222. Second spring; 223. Moving plate; 224. L-shaped limit plate; 225. Extension plate; 3. Drill bit; 4. Support block; 41. L-shaped mounting frame; 42. Driving unit one; 43. Resistance plate; 5. L-shaped fixing frame; 51. Driving unit two; 52. Trapezoidal connecting frame; 53. L-shaped limit block; 54. Concave groove; 6. Driving unit three; 61. Circular large gear; 62. Circular small gear; 63. Square groove. DETAILED DESCRIPTION

[0031] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments so that those skilled in the art can implement the invention with reference to the description.

[0032] It should be understood that the terms such as “having”, “including” and “comprising” used herein do not exclude the existence or addition of one or more other elements or combinations thereof.

[0033] In the description of the present invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. to indicate directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0034] Example 1: Reference Figure 1 , Figure 3 and Fig.12 A steel ball mill mounting liner drilling device comprises a processing table 1 and a mounting shell 2 which is arranged above the processing table 1 and can be lifted and lowered, the mounting shell 2 is provided with a rotatable drill bit 3, a pair of support blocks 4 fixedly connected to the top of the processing table 1 are provided below the mounting shell 2, and the other sides opposite to the two support blocks 4 are fixedly connected with an L-shaped mounting frame 41, a driving part 1 42 is installed on the L-shaped mounting frame 41, and an output end of the driving part 1 42 is fixedly connected with a resistance plate 43 sliding along the top of the support block 4, an L-shaped fixing frame 5 is fixedly connected to the top of the processing table 1, a driving part 2 51 is installed on the L-shaped fixing frame 5, and a trapezoidal connecting frame 52 is fixedly connected to the output end of the driving part 2 51, and the bottom of the trapezoidal connecting frame 52 is fixedly connected to the top of the mounting shell 2, and a pair of L-shaped limiting blocks 53 are fixedly connected to the back of the mounting shell 2, and a concave groove 54 which fits the surface of the L-shaped fixing frame 5 is opened on the L-shaped limiting block 53.

[0035] When in use, the lining plate to be drilled is placed on the two support blocks 4. At the same time, since the top of the support block 4 is designed according to the shape of the lining plate placement surface, when the lining plate is in contact with the top of the support block 4, it can ensure the stability of the placement. Subsequently, the corresponding driving parts 42 on the two support blocks 4 are started to push the connected resistance plate 43 to slide along the top of the support block 4, so that the lining plate to be drilled is stably fixed between the two support blocks 4. After the lining plate is fixed, the driving part 2 51 using the cylinder is driven to cooperate with the mounting shell 2 to move downward, so that the driving mechanism installed on the mounting shell 2 and connected to the drill bit 3 can perform the drilling operation on the lining plate fixed between the two support blocks 4 when it is started.

[0036] Example 2: Reference Figure 2 , Figure 4 , Figure 5 , Figure 6 and Fig. 9On the basis of the above-mentioned embodiment 1, the difference is that when there are multiple drill bits 3, the two sides of the mounting shell 2 are connected with mounting cavities 21, the top of the mounting shell 2 is provided with multiple circular holes 22, the bottom of the mounting shell 2 is provided with a circular hole 23 corresponding to the circular hole 22, the inner wall of the circular hole 22 is fitted with an upper mounting column 24, the surface of the upper mounting column 24 is fixedly connected with a circular block 25 fitted with the top of the mounting shell 2, the bottom of the upper mounting column 24 is fixedly connected with a corresponding square rod 26 located inside the mounting cavity 21, and the bottom of the square rod 26 is fixedly connected with a lower mounting column 27 fitted with the inner wall of the circular hole 23 The drill bit 3 is fixedly connected to the bottom of the lower mounting column 27, and also includes a driving mechanism for linking the drill bit 3 corresponding to each square rod 26 to rotate simultaneously. The driving mechanism includes a driving part 3 6 installed on the top center of the mounting shell 2. The output end of the driving part 3 6 is fixedly connected to a large circular gear 61 rotating inside the mounting cavity 21. The surface of the large circular gear 61 is connected to a plurality of small circular gears 62 that are adapted and corresponding to the circular hole 1 22. The top of the small circular gear 62 is connected to the top wall of the mounting cavity 21 through a bearing. The small circular gear 62 is connected to a square groove 63 that fits the surface of the square rod 26.

[0037] In actual use, since the mounting liner on the ball mill usually needs to drill two holes, and when a drill bit 3 is set on the mounting shell 2, it is necessary to drill another hole after drilling one hole. Such drilling efficiency is too low and is not suitable for drilling batches of liner plates. Therefore, based on this problem, two drill bits 3 are designed on the mounting shell 2. When in use, it is only necessary to drive the driving part 3 6 using a servo motor to drive the large circular gear 61 to rotate, so that the small circular gear 62 meshing with the large circular gear 61 can also drive the drill bit 3 on the lower mounting column 27 at the bottom of the square rod 26 to rotate under the rotation of the large circular gear 61. In this way, a pair of drill bits 3 designed at the bottom of the mounting shell 2 can be driven by the driving mechanism to drill two holes on the surface of the liner fixed between the two support blocks 4 at the same time, and such drilling efficiency is higher.

[0038] Example 3: Reference Figure 6 , Figure 7 , Figure 8 and Fig. 9On the basis of the above-mentioned second embodiment, the optimization is that it also includes an annular limiting groove 28 opened on the square rod 26, and a pair of resistance blocks 29 that move simultaneously relative to or oppositely are provided inside the installation cavity 21. When the two resistance blocks 29 move relative to each other, the resistance blocks 29 and the inner wall of the annular limiting groove 28 are in a separated state. When the two resistance blocks 29 move oppositely, the resistance blocks 29 and the inner wall of the annular limiting groove 28 are in a fitted state. A pair of vertical plates 210 are fixedly connected to the bottom wall of the installation cavity 21, and each vertical plate 210 is slidably connected to a transverse moving rod 211, and one end of the transverse moving rod 211 is fixedly connected to the resistance On the contact block 29, an annular block 212 is fixedly connected to the surface of the transverse moving rod 211, a first spring 213 sleeved on the transverse moving rod 211 is fixedly connected between the annular block 212 and the vertical plate 210, the other end of the transverse moving rod 211 is fixedly connected to a semicircular connecting block 214, a toggle mechanism is linked between the two semicircular connecting blocks 214, the toggle mechanism includes a driving part 215 installed on the center of the bottom wall of the mounting cavity 21, a circular rotating block 216 is fixedly connected to the output end surface of the driving part 215, and a pair of arc-shaped toggle blocks 217 distributed in a circle are fixedly connected to the surface of the circular rotating block 216.

[0039] Such a technical solution is adopted in consideration of the fact that a pair of drill bits 3 designed under the bottom of the mounting shell 2 can drill two holes in the liner at the same time under the drive of the driving mechanism. However, if one of the drill bits 3 is damaged, the other good drill bit 3 may not work properly. Based on this problem, in the present technical solution, a resistance block 29 is designed to fit or separate from the inner wall of the annular limiting groove 28. When the resistance block 29 fits with the inner wall of the annular limiting groove 28, the arc-shaped toggle block 217 on the circular rotating block 216 is driven by the driving part 215 of the servo motor to resist the inner wall of the annular limiting groove 28. The semicircular connecting block 214 contacts the surface of the semicircular connecting block 214, so that the semicircular connecting block 214 drives the annular block 212 on the transverse moving rod 211 to stretch the first spring 213 under the resistance and compression of the arc-shaped toggle block 217, so that the resistance block 29 connected to the other end of the transverse moving rod 211 tightly contacts the inner wall of the annular limiting groove 28. In this way, the integrated structure composed of the upper mounting column 24, the square rod 26, the lower mounting column 27 and the drill bit 3 can be stably limited between the top and the bottom of the mounting shell 2, ensuring that the two drill bits 3 can efficiently and stably perform drilling operations on the liner.

[0040] When the damaged drill bit 3 needs to be replaced, it is only necessary to start the driving part 4 215 to drive the arc-shaped toggle block 217 on the circular rotating block 216 to continue to rotate, so that the arc-shaped toggle block 217 is separated from the surface of the semicircular connecting block 214. At this time, the transverse moving rod 211 is reset under the elastic force of the first spring 213, driving the resistance block 29 to separate from the annular limiting groove 28, and the semicircular connecting block 214 is fitted with the surface of the circular rotating block 216, so that the annular limiting groove 28 can slide the integrated structure composed of the upper mounting column 24, the square rod 26, the lower mounting column 27 and the drill bit 3 along the inner wall of the circular hole 1 22 and the circular hole 2 23 without the restriction of the resistance block 29, and pull it out from the top of the mounting shell 2, so as to realize the rapid and efficient replacement of the drill bit 3. In this way, whether it is a single drill bit 3 or two drill bits 3 can be replaced synchronously.

[0041] More importantly, when the resistance block 29 is separated from the inner wall of the annular limit groove 28, the synchronous rotation of the two drill bits 3 can be achieved through the driving mechanism. At this time, if the driving unit 215 drives the circular rotating block 216 and the arc-shaped toggle block 217 on the circular rotating block 216 to continue to rotate along the surface of the semicircular connecting block 214, the resistance block 29 will intermittently contact the inner wall of the annular limit groove 28, thereby generating a slight vibration force on the integrated structure composed of the upper mounting column 24, the square rod 26, the lower mounting column 27 and the drill bit 3. This vibration force helps to shake the debris attached to the surface of the drill bit 3 after the drilling operation is completed, thereby improving the efficiency of the next batch of drilling operations.

[0042] Example 3: Reference Figure 8 , Fig.10 and Fig.11 , based on the above-mentioned embodiment 2, the difference is that when the arc-shaped toggle block 217 is attached to the semicircular connecting block 214, the surface of the annular block 212 is attached with a gas guide tube 218, one end of the gas guide tube 218 is fixedly connected to one side of the vertical plate 210, and the other end of the gas guide tube 218 is fixedly connected to a circular sealing plate 219 sleeved on the horizontal moving rod 211, and the gas guide tube 218 is connected to the gas delivery pipe 220, and the gas delivery pipe 220 runs through one end of the outside of the installation shell 2 and is provided with a gas seal for attaching the top of the circular block 25. The resistance piece includes a fixed shell 221 connected to the corresponding end of the air supply pipe 220, the inner wall of the fixed shell 221 is fixedly connected with a second spring 222, the other end of the second spring 222 is fixedly connected with a movable plate 223 that fits with the inner wall of the fixed shell 221, the movable plate 223 is fixedly connected with an L-shaped limiting plate 224 that passes through the outside of the fixed shell 221, the bottom of the fixed shell 221 is fixedly connected with a pair of extension plates 225, and the bottom of the extension plate 225 is fixedly connected to the top of the mounting shell 2.

[0043] When the arc-shaped toggle block 217 contacts and generates friction with the surface of the semicircular connecting block 214, it will push the friction block 29 connected to the other end of the transverse moving rod 211 to be tight with the inner wall of the annular limiting groove 28. During this process, the annular block 212 fixed on the transverse moving rod 211 will slide along the inner wall of the gas guide cylinder 218, and the gas inside the gas guide cylinder 218 will be transported to the interior of the fixed shell 221 through the gas supply pipe 220, thereby driving the moving plate 223 to slide along the inner wall of the fixed shell 221 until the bottom of the L-shaped limiting plate 224 fixed on the moving plate 223 is in contact with the top of the circular block 25. In this way, the integrated structure composed of the upper mounting column 24, the square rod 26, the lower mounting column 27 and the drill bit 3 can cooperate with the driving mechanism to perform drilling operations more stably and efficiently under the multiple limiting actions of the friction block 29 and the L-shaped limiting plate 224. Such a design not only improves the drilling accuracy, but also ensures the stability during the operation.

[0044] The above embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which are equivalent modifications and improvements made to the above embodiments based on the essential technology of the present invention, and all of them belong to the protection scope of the present invention.

Claims

1. A liner drilling device for a steel ball mill, comprising: A processing table (1) and a mounting shell (2) arranged above the processing table (1) and capable of being raised and lowered, wherein a rotatable drill bit (3) is provided on the mounting shell (2); the characterised in that: When there are multiple drill bits (3), the mounting shell (2) is connected to a mounting cavity (21) on both sides, the mounting shell (2) is provided with multiple circular holes (22) on the top, the mounting shell (2) is provided with a circular hole (23) corresponding to the circular hole (22) on the bottom, an upper mounting column (24) is attached to the inner wall of the circular hole (22), a circular block (25) attached to the top of the mounting shell (2) is fixedly connected to the surface of the upper mounting column (24), a corresponding square rod (26) located inside the mounting cavity (21) is fixedly connected to the bottom of the upper mounting column (24), a lower mounting column (27) attached to the inner wall of the circular hole (23) is fixedly connected to the bottom of the square rod (26), and the drill bit (3) is fixedly connected to the bottom of the lower mounting column (27); and further comprising: A driving mechanism, used for linking the drill bit (3) corresponding to each of the square rods (26) to rotate simultaneously; and An annular limiting groove (28) is provided on the square rod (26), and a pair of abutment blocks (29) that move relative to or in opposite directions at the same time are provided inside the installation cavity (21); When the two abutment blocks (29) move relative to each other, the abutment blocks (29) and the inner wall of the annular limiting groove (28) are in a separated state; When the two abutment blocks (29) move in opposite directions, the abutment blocks (29) and the interior of the annular limiting groove (28) are in a fitted state.

2. A steel ball mill installation liner drilling device according to claim 1, characterized in that: A pair of support blocks (4) fixedly connected to the top of the processing table (1) are provided below the mounting shell (2); an L-shaped mounting frame (41) is fixedly connected to the other side of the two support blocks (4) opposite to each other; a driving unit (42) is mounted on the L-shaped mounting frame (41); and an output end of the driving unit (42) is fixedly connected to a contact plate (43) that slides along the top of the support block (4).

3. A steel ball mill installation liner drilling device according to claim 2, characterized in that: The top of the processing table (1) is fixedly connected to an L-shaped fixing frame (5), a second driving unit (51) is mounted on the L-shaped fixing frame (5), an output end of the second driving unit (51) is fixedly connected to a trapezoidal connecting frame (52), and the bottom of the trapezoidal connecting frame (52) is fixedly connected to the top of the mounting shell (2).

4. A steel ball mill installation liner drilling device according to claim 3, characterized in that: A pair of L-shaped limit blocks (53) are fixedly connected to the back of the installation shell (2), and the L-shaped limit blocks (53) are provided with concave grooves (54) that fit the surface of the L-shaped fixing frame (5).

5. The steel ball mill installation liner drilling device according to claim 1, characterized in that: The driving mechanism comprises a driving part three (6) mounted on the top center of the mounting shell (2); the output end of the driving part three (6) is fixedly connected to a circular large gear (61) located and rotating inside the mounting cavity (21); the surface of the circular large gear (61) is connected to a plurality of circular small gears (62) that are matched and correspond to the circular hole one (22); the top of the circular small gear (62) is connected to the top wall of the mounting cavity (21) through a bearing; and the circular small gear (62) is connected to a square groove (63) that fits the surface of the square rod (26).

6. A steel ball mill installation liner drilling device according to claim 5, characterized in that: A pair of vertical plates (210) are fixedly connected to the bottom wall of the installation cavity (21), and each of the vertical plates (210) is slidably connected to a transverse moving rod (211), one end of the transverse moving rod (211) is fixedly connected to the abutment block (29), an annular block (212) is fixedly connected to the surface of the transverse moving rod (211), a first spring (213) sleeved on the transverse moving rod (211) is fixedly connected between the annular block (212) and the vertical plate (210), the other end of the transverse moving rod (211) is fixedly connected to a semicircular connecting block (214), and a toggle mechanism is linked between the two semicircular connecting blocks (214).

7. A steel ball mill installation liner drilling device according to claim 6, characterized in that: The toggle mechanism comprises a driving part four (215) mounted on the center of the bottom wall of the mounting cavity (21), a circular rotating block (216) being fixedly connected to the surface of the output end of the driving part four (215), and a pair of arc-shaped toggle blocks (217) distributed in a circumference being fixedly connected to the surface of the circular rotating block (216).

8. A steel ball mill installation liner drilling device according to claim 7, characterized in that: When the arc-shaped toggle block (217) is fitted with the semicircular connecting block (214), an air guide cylinder (218) is fitted on the surface of the annular block (212), one end of the air guide cylinder (218) is fixedly connected to one side of the vertical plate (210), and the other end of the air guide cylinder (218) is fixedly connected to a circular sealing plate (219) sleeved on the transverse moving rod (211). The air guide cylinder (218) is connected to an air supply pipe (220), and one end of the air supply pipe (220) that passes through the outside of the mounting shell (2) is provided with a resistance member that fits against the top of the circular block (25).

9. A steel ball mill installation liner drilling device according to claim 8, characterized in that: The abutment member comprises a fixed shell (221) connected to a corresponding end of the gas delivery pipe (220); a second spring (222) is fixedly connected to the inner wall of the fixed shell (221); the other end of the second spring (222) is fixedly connected to a movable plate (223) fitted to the inner wall of the fixed shell (221); and an L-shaped limiting plate (224) penetrating to the outside of the fixed shell (221) is fixedly connected to the movable plate (223).

10. A steel ball mill installation liner drilling device according to claim 9, characterized in that: A pair of extension plates (225) are fixedly connected to the bottom of the fixed shell (221), and the bottom of the extension plates (225) is fixedly connected to the top of the installation shell (2).

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