JP2010274219A - Gyratory crusher - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a gyratory crusher which simplifies replacement work of a belt while stably supporting a pulley shaft by a plummer block and which reduces the arrangement space of the plummer block. <P>SOLUTION: The gyratory crusher 1 is provided with a main shaft 4 equipped with a mantle core 21, a rotation axis 3 to swirlingly rotate the main shaft 4, in which the main shaft 4 is inserted and a motor 6 to drive the rotation axis 3. The pulley shaft 51 is connected to a motor shaft 32 of the motor 6 in series, the pulley shaft 51 is inserted into a tubular housing 53 and the motor side end 53a of the housing 53 is fitted to an installation stand 7. The pulley shaft 51 is supported by the plummer block 63 consisting of the housing 53, bearings 61, 62 with which the motor side end 53a within the housing 53 and the opposite motor side end 53b are equipped respectively. A driving pulley 64 which is arranged so that it covers the housing 53 is fixed at the opposite motor side end 51a of the pulley shaft 51, and the belt 71 is hooked over the driving pulley 64 and a driven pulley 15 fixed at the one end of the rotation axis 3. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a rotary crusher that crushes a material to be crushed by rotating a mantle by rotation of a rotary shaft, and more specifically, is connected to a motor shaft of a motor that drives the rotary shaft of the rotary crusher. The present invention relates to a structure of a plummer block that supports a pulley shaft.

  A general-purpose rotary crusher has a bawl liner installed in a cylindrical frame, a main shaft equipped with a mantle door on which a mantle is installed, and the main shaft is fitted, and the main shaft rotates. A rotating shaft to be driven and a motor for driving the rotating shaft, and by rotating the rotating shaft, the mantle is rotated together with the main shaft, and the object to be crushed is crushed between the mantle and the bawl liner. To do.

  Here, as a means for driving the rotating shaft, for example, as shown in FIG. 7, a pulley shaft 103 is connected in series to a motor shaft 102 of a motor 101 by a coupling 104, and a driving pulley 105 is fixed to the pulley shaft 103. The pulley shaft 103 is supported by plummer blocks 107 and 108 attached to the installation base 106 at a position sandwiching the drive pulley 105, and a belt is attached to the drive pulley 105 and a driven pulley fixed to one end portion of the rotation shaft. 109 in which the rotation of the motor shaft 102 is transmitted to the rotating shaft via the belt 109 is known.

  In the above rotating crusher, two plummer blocks 107 and 108 are arranged on the pulley shaft 103. Therefore, it is necessary to take a large arrangement space for the plummer blocks 107 and 108.

  Moreover, since the above-mentioned rotatory crusher crushes a material to be crushed between a rotating mantle and a bow liner, a large driving force is required to rotate the rotating shaft. Therefore, a large tension is applied to the belt 109, the belt 109 is easily damaged, and it is often necessary to replace the damaged belt 109.

  However, since the driving crusher 105 is sandwiched between the plummer blocks 107 and 108 in the above-described rotary crusher, it is necessary to remove the plummer block 108 disposed on the non-motor side when the belt 109 is replaced. The replacement work of the belt 109 was complicated.

  Therefore, it is conceivable that the pulley shaft 103 is supported only by the motor-side plummer block 107 so that it is not necessary to remove the non-motor-side plummer block 108 when replacing the belt 109. However, in that case, since the pulley shaft 103 has only one fulcrum, the pulley shaft 103 may be inclined and damaged.

  The problem to be solved by the present invention is to simplify the belt replacement work and reduce the arrangement space of the plummer block while stably supporting the pulley shaft with the plummer block.

  In order to solve the above-mentioned problems, a rotary crusher according to the present invention has a pulley shaft connected in series to the motor shaft of the motor, the pulley shaft is inserted into a cylindrical housing, and the motor side of the housing The pulley shaft is supported by a plummer block consisting of a housing, a motor-side end inside the housing, and a bearing mounted on each end of the non-motor side. The pulley shaft is supported on the non-motor side of the pulley shaft. A driving pulley arranged so as to cover the housing is fixed to an end, a belt is stretched between the driving pulley and a driven pulley fixed to one end of the rotating shaft, and the rotation of the motor shaft causes the belt to rotate. And transmitted to the rotating shaft.

  In this way, since the plummer block has a structure in which only the motor side of the housing is attached to the installation base, the belt can be removed from the non-motor side of the drive pulley without removing the plummer block when replacing the belt. it can. Therefore, the belt replacement operation can be simplified. Further, since the bearings are mounted on the motor side end and the counter motor side end inside the housing, the pulley shaft fulcrum is on the motor side and the counter motor side of the pulley shaft, and the pulley shaft is not easily tilted. Therefore, the pulley shaft can be stably supported by the plummer block. Further, since only one plummer block is arranged on the pulley shaft, the arrangement space of the plummer block is reduced.

  Preferably, the motor shaft of the motor is vertically downward, the pulley shaft is vertically connected to the motor shaft, the installation base has a vertical plate, and the motor side end of the housing is attached to the vertical plate. .

  When the motor shaft of the motor is used vertically downward, it is necessary to attach the plummer block to the pulley shaft while supporting the plummer block in the direction of gravity, so that the plummer block is particularly difficult to attach to the pulley shaft. According to the above configuration, when replacing the belt, it is not necessary to remove the plummer block, which is particularly effective for belt replacement.

  Since the rotary crusher of this invention does not need to remove a plummer block at the time of belt replacement | exchange, it can simplify the replacement | exchange operation | work of a belt. Further, since the fulcrum of the pulley shaft is on the motor side and the non-motor side of the pulley shaft, the pulley shaft is not tilted and is stably supported. Further, since only one plummer block is arranged on the pulley shaft, the arrangement space of the plummer block is reduced.

A longitudinal sectional view showing a rotary crusher of an embodiment of the present invention Fig. 1 shows the vertical plate of the rotary crusher installation stand in Fig. 1 as seen from the motor side. Enlarged sectional view of the vicinity of the motor of the rotary crusher of FIG. Top view of the rotary crusher in FIG. 1 is a perspective view of the vicinity of the motor of the rotary crusher of FIG. Sectional view along line VI-VI in FIG. Side view of the vicinity of the motor of a conventional rotary crusher

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a longitudinal sectional view showing a rotary crusher according to an embodiment of the present invention. As shown in FIG. 1, a rotary crusher 1 includes a vertically placed cylindrical frame 2, a rotary shaft 3 that is driven to rotate about a vertical axis, a main shaft 4 that is fitted on the rotary shaft 3, and a bawl. It has a liner 5, a motor 6 that drives the rotating shaft 3, and an installation base 7 for installing the motor 6.

  The frame 2 includes an upper frame 8 and a lower frame 9, and a flange portion 8 a formed at the lower end of the upper frame 8 and a flange portion 9 a formed at the upper end of the lower frame 9 face each other and are connected by bolts 10. ing. The lower frame 9 has a small-diameter cylindrical portion 11 at the center thereof, and the cylindrical portion 11 is held by a holding portion 12 formed on the outer periphery thereof.

  The rotary shaft 3 is rotatably inserted into the cylindrical portion 11 of the frame 2 via an outer bush 13 fitted on the outer periphery of the rotary shaft 3 and is rotatably supported by a bearing 14 disposed at the lower inner surface of the cylindrical portion 11. Has been. The rotating shaft 3 has a driven pulley 15 fixed to the lower end of the rotating shaft 3 by a key 16 and a key groove 17, and the key 16 is prevented from coming off by an end plate 18 fixed to the lower end surface of the rotating shaft 3.

  An eccentric inclined hole 19 is formed on the upper surface of the rotary shaft 3, and the lower half of the main shaft 4 is fitted into the inclined hole 19 via an inner bush 20. Thereby, the main shaft 4 is rotated by the rotation of the rotating shaft 3. The main shaft 4 has a substantially truncated cone-shaped mantle door 21 mounted on the upper half thereof, and a mantle 22 is placed and fixed on the upper surface of the mantle door 21.

  The mantle door 21 has a convex spherical surface at the bottom surface 21 a and is rotatably supported by a spherical support 23 fixed to the upper surface of the cylindrical portion 11. Further, the mantle door 21 has a skirt portion 21b formed on the outer peripheral edge thereof, and an annular dustproof ring 24 is fixed to the skirt portion 21b. The dust-proof ring 24 is in contact with the seal ring 26 on the upper part of the annular dust-proof wall 25 erected on the upper surface around the cylindrical portion 11 of the frame 2.

  The bow liner 5 is installed on the inner surface of the upper frame 8 so as to face the mantle 22 through the lifting cylinder 27. The elevating cylinder 27 can be moved up and down by a hydraulic mechanism (not shown). Therefore, the expansion of the gap due to wear of the mantle 22 and the bowl liner 5 can be adjusted, and deterioration of the crushing conditions can be prevented. A hopper 28 for feeding the object to be crushed into the frame 2 is provided at the upper part of the lifting cylinder 27.

  The installation base 7 includes a vertical plate 29 on which the motor 6 is installed, and a first horizontal plate 30 that fixes the vertical plate 29.

  As shown in FIGS. 1 to 3, the vertical plate 29 is formed with a notch 31 having a U-shaped cross section on the lower side of a rectangular shape, and mounting portions 29 a and 29 a are provided on both left and right sides of the notch 31. It has been. The vertical plate 29 is arranged so that the driven pulley 15 is located in the rear, and the motor 6 is attached to the front upper portion 29b via the fixing member 33 so that the motor shaft 32 faces vertically downward.

  The motor 6 is attached to the fixing member 33 by hooking the foot 6a of the motor 6 to the bolts 34 fixed to the upper four positions of the fixing member 33.

  The fixing member 33 has an area smaller than that of the vertical plate 29, and similarly to the vertical plate 29, a rectangular cutout 35 is formed on one lower side of the rectangular shape, and mounting portions are provided on both left and right sides of the cutout 35. 33a and 33a are provided.

  Two jack bolts 36 provided on the front upper portion 29b of the vertical plate 29 are in contact with each of the left and right sides of the fixing member 33. With the jack bolts 36, the inclination of the fixing member 33 with respect to the vertical plate 29 in the horizontal direction Can be adjusted. Further, two jack bolts 37 are provided at the upper end of the fixing member 33 so as to come into contact with the upper end of the vertical plate 29, and the position of the fixing member 33 in the vertical direction with respect to the vertical plate 29 by the jack bolt 37. Can be adjusted.

  As shown in FIGS. 4 and 5, the first horizontal plate 30 has a shape in which a notch 38 having a U-shaped cross section is formed on one side of a rectangle. As shown in FIGS. 1, 5, and 6, the first horizontal plate 30 is formed at the lower end of the lower frame 9 with the notches 38 positioned so as to sandwich the left and right sides of the vertical plate 29. It is fixed to the flange portion 9b with bolts 39. On the upper surface of the first horizontal plate 30, a first C channel 40 is attached to a portion surrounding the flange portion 9b and a portion sandwiching the left and right sides of the vertical plate 29.

  Further, a second horizontal plate 41 is attached to the first horizontal plate 30 via a first C channel 40. As shown in FIGS. 4 and 5, the second horizontal plate 41 has a smaller area than the first horizontal plate 30 and is formed with a notch 42 having a U-shaped cross section on one side of the octagon. 42 is positioned so as to sandwich the left and right sides of the vertical plate 29.

  On the upper surface of the second horizontal plate 41, second C channels 43, 43 are attached to portions sandwiching the left and right sides of the vertical plate 29. As shown in FIGS. 2 and 5, the second C channel 43 is in contact with the left and right sides of the vertical plate 29 so that the U-shaped outer surface 43 a intersects with the right and left sides of the vertical plate 29. It is welded and fixed to the third C channel 44 shown in FIG. As a result, the vertical plate 29 is fixed to the first horizontal plate 30 via the second horizontal plate 41 and the C channels 40 and 43.

  3 and 5, the second C channel 43 has a plate member 45 fixed to its U-shaped inner surface 43b, and a rectangular holding plate 46 is bolted to the plate member 45. 47 and a nut 48. The lower portion of the holding plate 46 and the mounting portion 29a of the vertical plate 29 are connected by bolts 49 and nuts 50 as shown in FIGS. 3 and 6, thereby supporting the vertical plate 29 so as not to fall forward. ing.

  In the motor 6, a pulley shaft 51 is connected to the motor shaft 32 in series in a vertical direction by a coupling 52. The pulley shaft 51 is inserted into a cylindrical housing 53, and a flange portion 54 that protrudes to the outer diameter side is formed at a motor-side end 53 a of the housing 53. An outer surface trapezoidal mounting plate 55 is fixed to the lower surface of the flange portion 54 with bolts 56.

  The mounting plate 55 is formed with two U-shaped cutouts 57, 57 on the longer side of two parallel sides, and each cutout 57 has a cutout 57, as shown in FIGS. A rectangular support plate 58 whose longitudinal direction is longer than the thickness dimension of the mounting plate 55 is fitted and fixed so as to protrude downward.

  As shown in FIGS. 2, 3, and 6, the mounting plate 55 is arranged such that the longer one of the two parallel sides is in horizontal contact with the notch 35 of the fixing member 33 slightly above. In this state, each support plate 58 is fixed to the mounting portion 33 a of the fixing member 33 with a bolt 59. Thereby, the motor side end 53 a of the housing 53 is attached to the vertical plate 29 via the attachment plate 55 and the fixing member 33.

  As shown in FIGS. 2 and 5, the attachment plate 55 has a substantially triangular rib 60 attached to the lower surface thereof fixed to the support plate 58 so that the rib 60 does not fall down. It has been.

  As shown in FIG. 3, bearings 61 and 62 are mounted on the motor-side end 53 a and the counter-motor-side end 53 b inside the housing 53, respectively. The two bearings 61 and 62 and the housing 53 are included. The pulley shaft 51 is supported by the plummer block 63 so as not to tilt.

  A cylindrical drive pulley 64 is disposed on the outer diameter side of the housing 53 so as to cover the housing 53. The drive pulley 64 has a non-motor side end portion 64 a fixed to a ring-shaped fixing member 67 fixed to the non-motor side end portion 51 a of the pulley shaft 51 by a key 65 and a key groove 66 with a bolt 68. Thereby, the drive pulley 64 is fixed to the non-motor side end 51 a of the pulley shaft 51 via the fixing member 67. The key 65 is retained by an end plate 69 fixed to the end surface of the pulley shaft 51 opposite to the motor.

  Further, the drive pulley 64 is formed with a belt mounting portion 70 at a position closer to the motor side than the non-motor side end portion 64a, and as shown in FIG. 1, the belt mounting portion 70 and the driven pulley 15 are connected to each other. A belt 71 is stretched between them. The belt 71 is covered with a belt cover 73 supported by a substantially triangular rib 72 attached to the rear surface of the vertical plate 29. This prevents damage to the belt 71 due to foreign matter hitting the belt 71.

  In the rotary crusher 1 configured as described above, when the motor 6 is driven, the pulley shaft 51 rotates together with the motor shaft 32, and the rotation is transmitted to the rotating shaft 3 via the belt 71. When the rotating shaft 3 is rotated, the mantle 22 is rotated together with the main shaft 4, and the object to be crushed charged from the hopper 28 is crushed between the mantle 22 and the bawl liner 5.

  At this time, the rotatory crusher 1 crushes the object to be crushed between the rotating mantle 22 and the bawl liner 5, and therefore requires a large driving force to rotate the rotating shaft 3. Therefore, a large tension is applied to the belt 71, the belt 71 is easily damaged, and it is often necessary to replace the damaged belt 71.

  As shown in FIG. 3, the rotary crusher 1 has a structure in which the plummer block 63 is attached to the vertical plate 29 only on the motor side of the housing 53. Therefore, the plummer block 63 is replaced when the belt 71 is replaced. Even without removing the belt 71, the belt 71 can be removed from the non-motor side of the drive pulley 64. Therefore, the replacement work of the belt 71 can be simplified.

  Further, in the rotary crusher 1, since bearings 61 and 62 are mounted on the motor side end 53 a and the non-motor side end 53 b inside the housing 53, the fulcrum of the pulley shaft 51 is the pulley shaft 51. The pulley shaft 51 is not easily tilted. Therefore, the pulley shaft 51 is stably supported by the plummer block 63. Further, since only one plummer block 63 is arranged on the pulley shaft 51, the arrangement space of the plummer block 63 is reduced compared to the case where the plummer block is arranged at a position sandwiching the drive pulley.

  In the above embodiment, the rotary crusher 1 uses the motor 6 so that the motor shaft 32 is vertically downward, but the motor 6 may be arranged so that the motor shaft 32 is horizontal. In this case, a pulley shaft 51 is connected in series in the horizontal direction to the motor shaft 32, the pulley shaft 51 is inserted into a cylindrical housing 53, and a motor side end 53a of the housing 53 is placed horizontally. Attach to the installation stand. Since the attachment of the housing 53 to the installation base can be performed in the same manner as the rotary crusher 1 of the above embodiment, the description thereof is omitted.

DESCRIPTION OF SYMBOLS 1 Rotating crusher 2 Frame 3 Rotating shaft 4 Main shaft 5 Bowl liner 6 Motor 7 Installation stand 15 Driven pulley 21 Mantle door 22 Mantle 29 Vertical plate 32 Motor shaft 51 Pulley shaft 51a Non-motor side end portion 53 of pulley shaft Housing 53a Motor side end 53b of housing Non motor side end 61, 62 of bearing 61 Bearing 63 Plummer block 64 Drive pulley 71 Belt

Claims (2)

A main shaft (4) fitted with a bawl liner (5) installed in a cylindrical frame (2), a mantle door (21) on which a mantle (22) is installed, and the main shaft (4) are fitted, It has a rotating shaft (3) for rotating the main shaft (4) and a motor (6) for driving the rotating shaft (3), and the main shaft (4) is rotated by the rotation of the rotating shaft (3). And a rotating crusher (1) for rotating the mantle (22) and crushing the material to be crushed between the mantle (22) and the bawl liner (5),
A pulley shaft (51) is connected in series to the motor shaft (32) of the motor (6), the pulley shaft (51) is inserted into a cylindrical housing (53), and the motor side of the housing (53) The end (53a) is attached to the installation base (7), and the bearings (61) mounted on the housing (53) and the motor side end (53a) and the non-motor side end (53b) inside the housing (53), respectively. , 62) is supported by the plummer block (63), and the pulley shaft (51) is disposed so as to cover the housing (53) at the non-motor side end (51a) of the pulley shaft (51). A driving pulley (64) is fixed, and a belt (71) is stretched between the driving pulley (64) and a driven pulley (15) fixed to one end of the rotating shaft (3), and the motor shaft (32). Rotation of the belt ( Gyratory crusher, characterized in that it has to be transmitted the the rotary shaft (3) via one).   The motor shaft (32) of the motor (6) is vertically downward, the pulley shaft (51) is vertically connected to the motor shaft (32), and the installation base (7) has a vertical plate (29). The rotary crusher according to claim 1, wherein a motor side end portion (53a) of the housing (53) is attached to the vertical plate (29).

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