JP3643285B2 - How to attach / detach the rotating body of rotating equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a rotating body attaching / detaching method for a horizontal rotating device in which a rotating body rotating around a horizontal axis is accommodated in a casing.
[0002]
[Prior art]
A horizontal rotating device in which a rotating body rotating around a horizontal axis is accommodated in a casing is employed in a kneader, an extruder, a pulverizer, a dryer having a stirring function, and the like. Many of the rotating bodies of these rotating devices are attached to and detached from the casing in the horizontal direction, and the rotating body or casing is moved in the horizontal direction to attach and detach them. In the method of moving the rotator, there are a case where the rotator is moved together and a case where only the rotator is moved by separating the rotator.
[0003]
When attaching and detaching the rotating body, it is necessary to prevent the casing and the rotating body from touching each other when the casing and the rotating body move relative to each other, especially in a kneader or an extruder having a small clearance between the two. Therefore, it is required to perform the movement with high accuracy.
[0004]
For example, Japanese Utility Model Publication No. 62-170134 discloses a method for attaching and detaching a rotating body of a kneader. As shown in FIGS. 11 and 12, the kneader includes a rotating body 53 that is horizontally supported by a support housing 52 fixed on a base 51, and a casing 54 that is horizontally movable on the base 51. The outer surface of the support leg 54a provided on the casing 54 is slidably contacted with the guide rail 55 laid on the base 51, and the rolling wheels 56 attached to the inner side of the tip end of each support leg 54a are rolled. Thus, the casing 54 is moved along the guide rail 55.
[0005]
As shown in FIG. 13, the upper surface of the base 51 is provided with a recess 57 for dropping the respective rolling wheels 56 and locking the casing 54 to the storage position of the rotating body 53. When the casing 54 is moved from the storage position, the connection between the rotating body 53 and the support housing 52 is released, and then the casing 54 is lifted up slightly so that each rolling wheel 56 rides on the base 51 from the recess 57. The drop amount δ of each rolling wheel 56 into the recess 57 is set to be equal to or less than the clearance between the rotating body 53 and the inner surface of the casing 54 so that they do not come into contact with each other when the casing 54 moves.
[0006]
[Problems to be solved by the invention]
In the conventional rotating body attaching / detaching method of the rotating device described above, the rolling wheel for moving the casing is dropped into the recess in order to stably lock the casing at the housing position of the rotating body. However, there is a problem that the margin of clearance between the rotating body and the casing is narrowed in the vertical direction. Further, in order to move the casing smoothly, a gap is required between the guide rail and the outer surface of the casing support leg, and the clearance margin is reduced in the left-right direction by this gap. For this reason, when it is adopted in a rotating device having a small clearance between the rotating body and the casing, such as a kneader or an extruder, it is very difficult to design these rotating devices.
[0007]
Furthermore, the clearance between the rotating body and the casing is also affected by the processing and installation accuracy of the base and guide rails. In order to improve these accuracy and reduce fluctuations in the clearance, the manufacturing cost of the rotating equipment increases. There is also.
[0008]
SUMMARY OF THE INVENTION An object of the present invention is to provide a rotating body attaching / detaching method that does not cause a contact between the rotating body and the rotating body even when the rotating body has a small clearance.
[0009]
[Means for Solving the Problems]
In order to solve the above-described problems, the present invention provides a rotating body attaching / detaching method for a rotating device in which a rotating body rotating around a horizontal axis housed in a casing of the rotating device is attached to and detached from the casing in a horizontal direction. A guide member that holds a clearance between the inner surface of the casing and the rotating body is attached to one end side of the rotating body, and the rotating body and the casing are horizontally oriented with the side opposite to the side on which the guide member is attached as the proximal side. A method of moving the rotating body to and from the casing was adopted.
[0010]
That is, a guide member that holds a clearance between the inner surface of the casing and the rotating body is attached to one end side of the rotating body, and the rotating body and the casing are horizontally oriented with the opposite side to the side on which the guide member is attached as the proximal side. By making the relative movement, the contact between the rotating body and the casing can be completely prevented.
[0011]
By providing at least one rolling element in rolling contact with the inner surface of the casing on the guide member, the relative movement between the rotating body and the casing can be performed more smoothly.
[0012]
In a rotating device in which a plurality of rotating bodies are housed in parallel in the casing, the guide member is attached to the rotating bodies of the plurality of bodies to prevent contact between the rotating bodies. The rotating body can be easily attached and detached.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 8 show a first embodiment. FIGS. 1A and 1B show a kneader as a horizontal rotating device to which the rotating body attaching / detaching method of this embodiment is applied. In this kneader, a main body 1 of the kneader, a motor 2 and a speed reducer 3 as a kneader driving device are respectively installed on two bases 4a and 4b, and the main body 1 is attached to the base 4a. The casing 5 is fixed, and two rotating bodies 6 parallel to each other are accommodated in the casing 5.
[0014]
The casing 5 is provided with a raw material supply port 7 and a kneaded product discharge port 8, and end covers 9 and 10 are attached to both ends. Each end cover 9, 10 is bolted to a flange 11 provided at both ends of the casing 5, and a shaft sealing member 12 and a bearing member 13 are accommodated therein.
[0015]
Each rotating body 6 has a large number of paddles 15 externally fitted to a rotating shaft 14, and both sides thereof are sealed by a shaft sealing member 12 and supported rotatably by a bearing member 13. The drive side of each rotary shaft 14 passes through the end cover 9 and is taken out of the casing 5, and is connected to the output shaft 3 a of the speed reducer 3 by a gear coupling 16. Note that sleeves 17 to be described later are fitted on both ends of each rotary shaft 14, and the shaft seal member 12 and the bearing member 13 are attached to each rotary shaft 14 via the sleeve 17.
[0016]
2A and 2B show a guide member 18 used when the rotating body 6 is attached to and detached from the casing 5. The guide member 18 includes a plate 20 provided with two through holes 19 into which the two rotating shafts 14 are respectively inserted, and a plurality of rollers 21 attached to the outer periphery of the plate 20. Is provided with a cylindrical portion 22 for securing a perpendicularity between each rotating shaft 14 and the plate 20. In addition, the dashed-dotted line of the figure 8 shape in a figure is a virtual line which shows the inner surface of the casing 5, and each roller 21 rolls in the axial direction of the casing 5 along this inner surface, and each rotary body 6 and casing 5 Holds the upper and lower and left and right clearances with the inner surface.
[0017]
Below, based on FIG. 3 thru | or FIG. 6, about the case where the rotary body 6 is removed from the casing 5, the work procedure is demonstrated.
[0018]
First, as shown in FIG. 3, the connection between the two bases 4a and 4b and the connection between the gear couplings 16 is released, the main body 1 of the kneader is separated from the drive device, and the drive device is installed. 4b is moved to a position that does not hinder the left work. At this time, the end cover 10 on the side opposite to the drive device is also removed, suspended from a crane (not shown), and removed from each rotating shaft 14.
[0019]
When removing the end cover 10, the upper cover 23 of the end cover 10 is opened, the set screw 24 of the sleeve 17 is removed, and the end cover 10 is removed together with the sleeve 17. Therefore, it is not necessary to remove the shaft seal member 12 and the bearing member 13 separately, and the operation can be simplified. Note that the paddles 15 that are externally fitted to the rotary shafts 14 are prevented from coming off by retaining rings 25.
[0020]
Next, as shown in FIG. 4, the guide member 18 is fitted into the end portion of each rotating shaft 14 that is exposed when the end cover 10 is removed, and the lower side of the flange 11 of the casing 5 from which the end cover 10 is removed. A C-shaped receiving metal fitting 26 as shown in FIGS. 7A and 7B is attached to the portion with a bolt (not shown). The receiving metal fitting 26 includes a flange portion 26a attached to the flange 11 of the casing 5 and a receiving plate portion 26b curved so as to match the inner surface of the casing 5 except for a constricted portion at the center portion.
[0021]
After that, the two lower rollers 21 on the lower side of the guide member 18 are placed on the receiving plate portion 26 b, the guide member 18 is pushed to a position where it abuts against the retaining ring 25 of the paddle 15, and is fixed to the rotating shaft 14 by a set screw 27. . When the end cover 10 is removed, each rotating shaft 14 has a feeling that the side to which the end cover 10 is attached is lowered, but the rotating member 6 is mounted on the receiving plate portion 26b by placing the guide member 18 on the receiving plate portion 26b. And the parallelism with the inner surface of the casing 5 are corrected.
[0022]
Next, as shown in FIG. 5, the fastening between the end cover 9 on the drive device side and the flange 11 of the casing 5 is released, and a suspension wire 28 is hung on the end cover 9 and suspended by a crane. After that, the rollers 21 of the guide member 18 are rolled on the inner surface of the casing 5 to slightly cue the paddle 15 mounting portion of the rotating shaft 14, and the paddle 15 at the cueed portion is placed in FIG. A hanging tool 29 as shown in FIG. The hanging tool 29 is divided in half so as to sandwich the paddle 15 from above and below.
[0023]
Finally, as shown in FIG. 6, a suspension wire 28 is also hung on the suspension tool 29, the rotating body 6 is suspended with a crane together with the end cover 9, and each roller 21 of the guide member 18 is moved while the crane is running horizontally. Roll along the inner surface of the casing 5 and take out the two rotating bodies 6 from the casing 5 together. At this time, each rotating body 6 is maintained at a constant clearance from the inner surface of the casing 5 by the guide member 18, and is smoothly extracted from the casing 5 by the rolling of each roller 21, and the inner surface of the casing 5 and the paddle 15. The rotator 6 is removed from the casing 5 without any wrinkles.
[0024]
When the rotating body 6 is attached to the casing 5, it can be performed in the reverse procedure of the above-described removal operation. When the rotating body 6 is inserted into the casing 5, the receiving metal fitting 26 on which the guide member 18 is placed is attached to the casing 5. Only the point of attachment to the flange 11 on the drive device side is different.
[0025]
FIG. 9 shows a second embodiment. In the kneader to which the rotating body attaching / detaching method of this embodiment is applied, a motor 30 and a speed reducer 31 as a driving device are installed on a slide base 33 on a base 32, and a casing 34 of the kneader is directly fixed to the base 32. The rotating body 35 is cantilevered by the speed reducer 31.
[0026]
In this case, as shown in FIG. 9A, first, the end cover 36 opposite to the driving device of the casing 34 is removed, and the guide member 37 with a roller as shown in FIG. The rotating body 35 is fitted into the shaft end and fixed. At this time, the fastening of the end cover 38 on the drive device side and the casing 34 is also released.
[0027]
Next, as shown in FIG. 9 (b), the slide base 33 is moved to the left, and the rotating body 35 is extracted from the casing 34 while rotating the rollers of the guide member 37 to the inner surface of the casing 34. Remove the body 35. The attaching work of the rotating body 35 to the casing 34 can be performed in the reverse order of the removing work.
[0028]
FIG. 10 shows a third embodiment. In the kneading machine to which the rotating body attaching / detaching method of this embodiment is applied, a motor 39 and a speed reducer 40 as a driving device are directly fixed to a base 41, and a casing 42 of the kneading machine is installed on a slide base 43 on the base 41. The rotating body 44 is cantilevered by the speed reducer 40.
[0029]
Also in this case, as shown in FIG. 10A, first, the end cover 45 opposite to the driving device of the casing 42 is removed, and the same guide member 46 as that in the second embodiment is rotated on the end cover 45 side. The shaft 44 of the body 44 is fitted and fixed. At this time, the fastening of the end cover 47 and the casing 42 on the drive device side is also released.
[0030]
Next, as shown in FIG. 10B, the slide base 43 is moved to the right, and the rotating body 44 is extracted from the casing 42 while rolling the rollers of the guide member 46 to the inner surface of the casing 42. Also in this case, the attaching work of the rotating body 44 can be performed in the reverse order of the above removing work.
[0031]
In each of the above-described embodiments, the roller is attached to the outer periphery of the guide member that maintains the clearance between the rotating body and the casing inner surface. However, any roller can be used as long as it can smoothly roll and slide on the inner surface of the casing. Also, a rolling element such as a ball or a sliding component having a small friction coefficient can be used. These rolling elements and sliding parts may be attached only to the lower part of the guide member.
[0032]
【The invention's effect】
As described above, the rotating body attaching / detaching method of the rotating device according to the present invention includes a guide member that holds a clearance between the inner surface of the rotating body and the rotating body on one end side of the rotating body when the rotating body is attached to or detached from the casing. Since the rotating body and the casing are moved relative to each other in the horizontal direction with the side opposite to the side where the guide member is mounted as the proximal side, even in a rotating device with a small clearance between the rotating body and the casing, contact between both This can be completely prevented, and the rotating body can be attached and detached without wrinkling the rotating device.
[0033]
Further, by providing at least one rolling element that is in rolling contact with the inner surface of the casing on the guide member, the relative movement between the rotating body and the casing when the rotating body is attached or detached can be performed more smoothly.
[0034]
Further, in a rotating device in which a plurality of rotating bodies are housed in parallel in a casing, the guide members are attached to the plurality of rotating bodies so as to prevent contact between the rotating bodies. The rotating body can be easily attached and detached.
[Brief description of the drawings]
FIG. 1A is a front view showing a rotating device adopting the rotating body attaching / detaching method of the first embodiment, b is a plan view of a, and FIG. 2A is a guide member used for attaching / detaching the rotating body of FIG. FIG. 3 is a side view of the rotary device shown in FIG. 1. FIG. 3 is a front sectional view showing the procedure for attaching / detaching the rotating body of the rotating device in FIG. Sectional view [FIG. 5] Partially omitted front sectional view showing the procedure for attaching / detaching the rotating body of the rotating device in FIG. 1 [FIG. 6] Partially omitted front sectional view showing the procedure for attaching / detaching the rotating body of the rotating device in FIG. a is a front view showing a metal fitting used for attaching / detaching the rotating body of FIG. 1, b is a side view of a. FIG. 8a is a front view showing a hanging tool used for attaching / detaching the rotating body of FIG. FIG. 9 is a side view of a rotating device attaching / detaching method of a rotating device according to the second embodiment. FIG. 10 is a side view of the rotating device according to the second embodiment. FIG. 11 is a front cross-sectional view showing a conventional rotary device attaching / detaching method. FIG. 12 is a side cross-sectional view of FIG. 11. FIG. Sectional enlarged view [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Main body 2 Motor 3 Reduction gear 3a Output shaft 4a, 4b Base 5 Casing 6 Rotating body 7 Supply port 8 Discharge port 9, 10 End cover 11 Flange 12 Shaft seal member 13 Bearing member 14 Rotation shaft 15 Paddle 16 Gear coupling 17 Sleeve 18 Guide member 19 Through hole 20 Plate 21 Roller 22 Cylindrical portion 23 Lid 24 Set screw 25 Set ring 26 Receiving metal fitting 26a Flange portion 26b Receiving plate portion 27 Set screw 28 Hanging wire 29 Lifting tool 30 Motor 31 Decelerator 32 Base 33 Slide base 34 casing 35 rotating body 36 end cover 37 guide member 38 end cover 39 motor 40 speed reducer 41 base 42 casing 43 slide base 44 rotating body 45 end cover 46 guide member 47 end cover

Claims (3)

In the rotating body attaching / detaching method of the rotating device, in which the rotating body rotating around the horizontal axis accommodated in the casing of the rotating device is attached to and detached from the casing in the horizontal direction, the casing inner surface and the rotating body are arranged at one end side of the rotating body. A guide member that holds a clearance is attached between the rotating member and the side opposite to the side where the guide member is attached, and the rotating body and the casing are relatively moved in the horizontal direction so that the rotating body is attached to and detached from the casing. A rotating body attaching / detaching method for a rotating device. The rotating body attaching / detaching method for a rotating device according to claim 1, wherein the guide member is provided with at least one rolling element that is in rolling contact with the inner surface of the casing. The rotating body attaching / detaching method for a rotating device according to claim 1 or 2, wherein a plurality of the rotating bodies are accommodated in parallel in the casing, and the guide member is attached to the plurality of rotating bodies.

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