Large ball mill coupling device

Abstract

A large ball mill coupling device comprises a first flange body and a second flange body, the first flange body and the second flange body are connected through an elastic body, the second flange body comprises an end face flange and a shaft tube flange, a plurality of threaded holes are annularly formed in the shaft tube flange, and a plurality of mounting holes are annularly formed in the end face flange. The shaft tube flange penetrates in from the side, located on the first flange body, of the end face flange, a screw penetrates in the mounting hole and then is connected with the threaded hole in a screwed mode, a limiting shaft is arranged on the shaft tube flange, an adjusting hole is formed in the end face flange, and the limiting shaft penetrates in the adjusting hole. The limiting shaft is arranged on the shaft tube flange, the adjusting hole is formed in the position, corresponding to the limiting shaft, of the end face flange, and the limiting shaft penetrates into the adjusting hole, so that the end face flange and the shaft tube flange are limited, when the mounting hole and the threaded hole cannot be aligned, alignment of the mounting hole and the threaded hole can be achieved through an inching starting motor, and mounting is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of ball mills, in particular to a coupling device for a large ball mill. Background Art

[0002] Large ball mill is an indispensable grinding equipment for fertilizer production. It is used to grind phosphate rock into the required particle size. The rotation of the ball mill is driven by the motor to drive the reducer, and then the reducer drives the ball mill to rotate. The output shaft of the reducer and the rotating shaft of the ball mill are connected and driven by a large ball mill coupling device. The structure of the large ball mill coupling device used by our company is as follows Figure 1 , 2 As shown, it is through the elastic body 3 installed in the limiting groove 12 of the first flange body 1, so that the adjacent elastic bodies 3 form a matching groove, and the second flange body 2 is annularly provided with a plurality of limiting keys 211, and the limiting keys 211 are inserted into the matching groove to form an elastic connection. After long-term use, since the reducer drives the ball mill to rotate through the coupling device, see Figure 8 , one side of the elastic body 3 is deformed by wear due to the pressure of the limit key 211. When the deformation reaches a certain depth, the elastic body 3 needs to be replaced during maintenance. When replacing, remove the screw 23, remove the end flange 21, and replace the old elastic body 3. However, after installing the new elastic body 3, see Fig. 9 As the wear depression of the elastic body 3 disappears, the end face flange 21 needs to be rotated a short distance to allow the limit key 211 to be inserted into the matching groove. At this time, the mounting hole 212 and the threaded hole 221 are misaligned, resulting in the inability to install the screw 23 with a smaller installation clearance.

[0003] During maintenance, in order to align the mounting hole 212 and the threaded hole 221, the motor can only be started by inching or turned manually. Since there is no limit between the end face flange 21 and the shaft tube flange 22, the inching starter motor is often not easy to align due to poor time control. Therefore, manual rotation of the motor is currently used for alignment. However, since the motor is large and the space is narrow, the installation operation is very inconvenient. Utility Model Content

[0004] The technical problem to be solved by the utility model is: to solve the problems existing in the above-mentioned background technology, and to provide a large ball mill coupling device, by arranging a limit shaft on the shaft tube flange, arranging an adjustment hole on the end face flange at the position corresponding to the limit shaft, and the limit shaft is inserted into the adjustment hole, so as to limit the position between the end face flange and the shaft tube flange. When the mounting hole and the threaded hole cannot be aligned, the inching starting motor can achieve the alignment of the mounting hole and the threaded hole.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a large ball mill coupling device, including a first flange body and a second flange body that match each other, the first flange body and the second flange body are connected by an elastic body, the second flange body includes an end face flange and a shaft tube flange, a plurality of threaded holes are arranged in a ring on the shaft tube flange, a plurality of mounting holes are arranged in a ring on the end face flange, the shaft tube flange is inserted from the side of the end face flange located at the first flange body, the screws are inserted into the mounting holes and then screwed into the threaded holes to connect the end face flange and the shaft tube flange, at least one limiting shaft is arranged on the shaft tube flange, an adjustment hole is arranged on the end face flange at a position corresponding to the limiting shaft, the adjustment hole is an arc-shaped long hole, the limiting shaft penetrates into the adjustment hole, and when the first flange body and the second flange body are aligned through the elastic body, and the mounting hole is aligned with the threaded hole, the limiting shaft abuts against one end of the adjustment hole.

[0006] The end of the limiting shaft is provided with an external thread, a nut is mounted on the external thread, and the nut abuts against the end face flange.

[0007] A positioning ring is installed on the limiting shaft between the end face flange and the nut. The positioning ring includes a gasket and an arc block. The arc block is arranged on one side end face of the gasket, and the arc block is inserted and installed in the gap between the adjustment hole and the limiting shaft.

[0008] The number of limit axes is 3.

[0009] One of the end faces of the first flange body is provided with an annular groove, and a plurality of limit grooves are arranged in an annular shape on the annular groove. The block-shaped elastic bodies are respectively installed in the limit grooves, and matching grooves are formed in the annular groove between adjacent elastic bodies. A plurality of limit keys are arranged in an annular shape on one side of the end face flange, and the plurality of limit keys can be respectively inserted and installed in the corresponding matching grooves.

[0010] The utility model has the following beneficial effects:

[0011] 1. The utility model sets a limit shaft on the shaft tube flange, sets an adjustment hole on the end face flange at a position corresponding to the limit shaft, and the limit shaft penetrates the adjustment hole, thereby limiting the position between the end face flange and the shaft tube flange. When the mounting hole and the threaded hole are not aligned, the inching starter motor can achieve the alignment of the mounting hole and the threaded hole, and the installation operation is convenient.

[0012] 2. The end of the limit shaft of the utility model is provided with an external thread, and a nut is installed on the external thread, so that the limit shaft not only plays a role of limiting, but also plays a role of connecting bolts.

[0013] 3. On the limit shaft of the utility model, a positioning ring is installed between the end face flange and the nut. By installing the positioning ring, the arc block is inserted into the gap to reduce the gap on one side of the limit shaft, so that the stability of the limit shaft is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model in use state.

[0016] Figure 2 It is a schematic diagram of the three-dimensional structure when the first flange body and the second flange body of the utility model are separated.

[0017] Figure 3 This is an exploded view of the utility model.

[0018] Figure 4 It is a schematic diagram of the three-dimensional structure of the first flange body of the utility model.

[0019] Figure 5 It is a schematic diagram of the three-dimensional structure of the end face flange of the utility model.

[0020] Figure 6 It is a schematic diagram of the three-dimensional structure of the shaft tube flange of the utility model.

[0021] Figure 7 It is a schematic diagram of the three-dimensional structure of the positioning ring of the utility model.

[0022] Figure 8 Schematic diagram of the coupling device after the elastomer is worn.

[0023] Fig. 9 Schematic diagram after replacing the elastic body of the coupling device.

[0024] Fig.10 It is a schematic diagram of the end face flange and the shaft tube flange after being positioned through the limit shaft and the adjustment hole.

[0025] In the figure:

[0026] First flange body 1, annular groove 11, limiting groove 12, second flange body 2, end face flange 21, limiting key 211, mounting hole 212, adjusting hole 213, shaft tube flange 22, threaded hole 221, limiting shaft 222, external thread 223, gap 224, screw 23, positioning ring 24, washer 241, arc block 242, nut 25, elastomer 3. DETAILED DESCRIPTION

[0027] like Figure 1-7As shown, a large ball mill coupling device includes a first flange body 1 and a second flange body 2 that match each other. The first flange body 1 and the second flange body 2 are connected by an elastic body 3. The second flange body 2 includes an end face flange 21 and a shaft tube flange 22. The shaft tube flange 22 is provided with a plurality of threaded holes 221 in an annular manner. The end face flange 21 is provided with a plurality of mounting holes 212 in an annular manner. The shaft tube flange 22 is inserted from one side of the end face flange 21 located at the first flange body 1. The screws 23 are inserted into the mounting holes 212 and then connected with the screws. The threaded hole 221 is screwed to connect the end face flange 21 and the shaft tube flange 22. At least one limiting shaft 222 is arranged on the shaft tube flange 22. An adjustment hole 213 is arranged at a position corresponding to the limiting shaft 222 on the end face flange 21. The adjustment hole 213 is an arc-shaped long hole. The limiting shaft 222 penetrates the adjustment hole 213. When the first flange body 1 and the second flange body 2 are aligned through the elastic body 3, and the mounting hole 212 is aligned with the threaded hole 221, the limiting shaft 222 abuts against one end of the adjustment hole 213.

[0028] By setting a limiting shaft 222 on the shaft tube flange 22, and setting an adjustment hole 213 at a position corresponding to the limiting shaft 222 on the end face flange 21, the limiting shaft 222 is inserted into the adjustment hole 213, thereby limiting the position between the end face flange 21 and the shaft tube flange 22. When the mounting hole 212 and the threaded hole 221 cannot be aligned, the inching starting motor can achieve the alignment of the mounting hole and the threaded hole, which is easy to operate.

[0029] Furthermore, the end of the limiting shaft 222 is provided with an external thread 223, and a nut 25 is mounted on the external thread 223, and the nut 25 abuts against the end face flange 21. The limiting shaft 222 not only plays a role of limiting, but also plays a role of connecting bolts.

[0030] For further information, see Figure 7 , a positioning ring 24 is installed on the limiting shaft 222 between the end face flange 21 and the nut 25, the positioning ring 24 includes a washer 241 and an arc block 242, the arc block 242 is arranged on one side end face of the washer 241, when in use, see Fig.10 The arc block 242 is inserted into the gap 224 between the adjustment hole 213 and the limiting shaft 222. By installing the positioning ring 24, the arc block 242 is inserted into the gap 224, reducing the gap on one side of the limiting shaft 222, so that the stability of the limiting shaft 222 is better.

[0031] In a preferred embodiment, three limiting shafts 222 are provided. Of course, according to the diameter of the coupling device, if the diameter of the coupling device is small, two limiting shafts 222 can be provided, and if the diameter of the coupling device is large, four limiting shafts 222 can also be provided.

[0032] In this embodiment, one end face of the first flange body 1 is provided with an annular groove 11, and a plurality of limiting grooves 12 are provided in an annular shape on the annular groove 11. The block-shaped elastic bodies 3 are respectively installed in the limiting grooves 12. A matching groove is formed in the annular groove 11 between adjacent elastic bodies 3. A plurality of limiting keys 211 are provided in an annular shape on one side of the end face flange 21, and the plurality of limiting keys 211 can be respectively inserted and installed in the corresponding matching grooves. Preferably, 12 limiting grooves 12 are provided, and 12 elastic bodies 3 are also installed. The elastic body 3 is a rubber block or a polyurethane block.

[0033] The coupling device is not limited to the above structure. For example, a coupling device using plum blossom elastomer can also be improved.

[0034] The action process or principle of the utility model is as follows:

[0035] See also Figure 8 One side of the elastomer 3 is subjected to the pressure of the limiting key 211, causing wear, depression and deformation. When the deformation reaches a certain depth, the elastomer 3 needs to be completely replaced during maintenance. During replacement, the screws 23 are removed, the end face flange 21 is removed, and the old elastomer 3 is replaced.

[0036] As the wear depression of the elastic body 3 disappears, the end face flange 21 needs to be rotated a short distance to insert the limit key 211 into the matching groove. At this time, the end face flange 21 is rotated counterclockwise to insert the limit key 211 into the matching groove. Fig. 9 At this time, since the output shaft of the reducer and the input end of the ball mill are fixed, the first flange body 1 and the shaft tube flange 22 are also fixed, so that the mounting hole 212 and the threaded hole 221 are misaligned, resulting in the inability to install the screw 23 with a smaller mounting clearance.

[0037] That is, just start the motor by jogging to make the shaft tube flange 22 rotate clockwise, such as Fig.10 As shown, when the left end of the adjustment hole 213 abuts against the limit shaft 222, the installation hole 212 and the threaded hole 221 are aligned. At this time, if the motor does not stop in time due to inertia, the left end of the adjustment hole 213 abuts against the limit shaft 222, and the end face flange 21 will also rotate with it, and will not be misaligned again. Then the screw 23 can be installed.

Claims

1. A large ball mill coupling device, comprising a first flange body (1) and a second flange body (2) which are matched with each other, the first flange body (1) and the second flange body (2) being connected via an elastic body (3), the second flange body (2) comprising an end face flange (21) and a shaft tube flange (22), a plurality of threaded holes (221) being arranged in an annular manner on the shaft tube flange (22), a plurality of mounting holes (212) being arranged in an annular manner on the end face flange (21), the shaft tube flange (22) being inserted from a side of the end face flange (21) located at the first flange body (1), a screw (23) being inserted into the mounting hole (212) and then being screwed into the threaded hole (221), thereby connecting the end face flange (21) and the shaft tube flange (22), characterized in that: At least one limiting shaft (222) is arranged on the shaft tube flange (22), and an adjustment hole (213) is arranged on the end face flange (21) at a position corresponding to the limiting shaft (222). The adjustment hole (213) is an arc-shaped long hole, and the limiting shaft (222) penetrates into the adjustment hole (213). When the first flange body (1) and the second flange body (2) are aligned through the elastic body (3), and the mounting hole (212) and the threaded hole (221) are aligned, the limiting shaft (222) abuts against one end of the adjustment hole (213).

2. A large ball mill coupling device according to claim 1, characterized in that: An external thread (223) is provided at the end of the limiting shaft (222), a nut (25) is mounted on the external thread (223), and the nut (25) abuts against the end face flange (21).

3. A large ball mill coupling device according to claim 2, characterized in that: A positioning ring (24) is installed on the limiting shaft (222) between the end face flange (21) and the nut (25). The positioning ring (24) comprises a washer (241) and an arc block (242). The arc block (242) is arranged on one end face of the washer (241). The arc block (242) is inserted into a gap (224) between the adjustment hole (213) and the limiting shaft (222).

4. A large ball mill coupling device according to claim 1, characterized in that: Three limiting shafts (222) are provided.

5. A large ball mill coupling device according to any one of claims 1 to 4, characterized in that: One end face of the first flange body (1) is provided with an annular groove (11), a plurality of limiting grooves (12) are provided in an annular shape on the annular groove (11), the block-shaped elastic bodies (3) are respectively installed in the limiting grooves (12), a matching groove is formed in the annular groove (11) between adjacent elastic bodies (3), and a plurality of limiting keys (211) are provided in an annular shape on one side of the end face flange (21), and the plurality of limiting keys (211) can be respectively inserted and installed in the corresponding matching grooves.

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