JPH10220399A - Device and method for pulling-off and assembling internal member of apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform pull-off and mounting of a fit-in part without the occurrence of damage by a method wherein a shaft sleeve for support coupled to the central axis of an internal member is supported by a roller in a manner that a vertical position is regulatable and the pull-out side of the internal member is vertically movably suspended by a suspension tool. SOLUTION: When the internal 13 of a double casing pump is pulled out from an external casing 11, shaft sleeves 1, 2, 3... are coupled to the shaft end of a main shaft 14 and a shaft sleeve 1 situated closer to the main shaft 14 is supported by a roller 6. After the axes of the shaft sleeves 1, 2, 3... are caused to coincide with the axis of the main shaft 14 and the center of the inner periphery 11a of the external casing 11, a rope 18c suspended from a hook 18a is hooked at the end part of the internal 13. The main shaft 14 on which an internal 13 and shaft sleeves 1, 2, 3... are attached is moved by a monorail 18. In this case, where there is possibility for the shaft sleeve 3 at a tip to be dislocated from the roller 6, the shaft sleeves 4 and 5 are extended to length long enough to allow pull-off of the internal 13.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for extracting, assembling, and removing an internal member of a device such as a double-casing pump having an internal member which can be assembled or extracted in the axial direction on the inner periphery of a cylindrical casing. , On how to incorporate.

[0002]

2. Description of the Related Art FIG. 3 is an explanatory view showing a method of extracting an internal member, that is, an internal member from an outer casing in a double casing type pump. In FIG. 3, reference numeral 11 denotes an outer casing of a double casing pump, 13 denotes an internal
2 is a suction cover, and 14 is a main shaft inserted through the center of the internal 13.

Reference numeral 17 denotes a bar extending in the axial direction of the main shaft 14, one end of which is fixed to an extraction end surface of the internal 13 by a bolt 17a. 16 is a lever, 15
Is a lever support bracket, and one end of the lever support bracket 15 has a bolt 1 on the extraction side end surface of the outer casing 11.
It is fixed at 5 a and extends in the axial direction of the main shaft 14 below the bar 17.

The lever 16 has a fulcrum 16a at an intermediate portion rotatably supported by a plurality of support holes 15b provided at predetermined intervals in the longitudinal direction of the lever support bracket 15, and a tip end portion of the lever 16 in the longitudinal direction of the bar 17. Can be fitted into circular cutout grooves 17b provided at predetermined intervals. 18 is a monorail, and 18a is a wire rope 18b on the same monorail 18.
Is a hook suspended through the

When the internal 13 is extracted from the outer casing 11 by using the above-described extracting device, a rope 18c is hung on the hook 18a of the monorail 18 on the internal 13, and the rope 18c is The internal 13 is wound around an appropriate position near the extraction side, and the internal 13 is hung on the monorail via the hook 18a.

Next, the lever 16 is moved to its fulcrum 16a.
Is inserted into a hole at an appropriate position in the support hole 15b of the lever support fitting 15, thereby supporting the lever 16 in the support hole 15b, and the tip of the lever 16 is fitted into an appropriate position of the groove 17b of the bar 17. Then, as shown by the arrow Z or W in FIG.
6 is rotated.

That is, when the lever 16 is turned in the direction of the arrow Z in FIG. 3, the tip of the lever 16 pushes the groove 17b, so that the bar 17 moves in the direction of the arrow Y in FIG. Also moves in the direction of the arrow Y and is extracted from the outer casing 11.

The internal casing 13 is connected to the external casing 1
At the time of assembling the internal casing 1, the internal 13 is inserted into the outer casing 11 via the bar 17 by rotating the lever 16 in the direction of the arrow W in FIG.

[0009]

As shown in FIG. 3, in a method of extracting and installing a double casing pump by a conventional apparatus as shown in FIG. 3, a lever 16 is supported by a support metal 15 on a casing side as a fulcrum. Since the internal 13 is pulled out of the external casing 11 and assembled by rotating, there are the following problems.

(1) When the internal 13 is pulled out (or incorporated), the core of the internal 13 is easily inclined, so that the outer periphery of the internal 13 and the outer casing 1
It is easy for the inner circumference of the sliding member 1 to slide in contact with each other in an inclined state, thereby causing damage to the sliding contact portion.

(2) A long and complicated bar, lever support bracket and lever, and their mounting members are required, and the extraction and assembly device becomes expensive.

Accordingly, a first object of the present invention is to provide a device for extracting and assembling a cylindrical casing such as a double casing pump and an internal member, and preventing abnormal sliding contact between the internal member when the internal member is extracted and assembled. An object of the present invention is to prevent damage from occurring.

Another object of the present invention is to provide an extracting and incorporating device which is lower in cost than the conventional one.

[0014]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and a gist of the invention is to provide an internal member having a central axis fitted to the inner periphery of a cylindrical casing. In the device, the support shaft sleeve connected to the shaft end opposite to the direction in which the center shaft is withdrawn, and the support shaft sleeve are pulled downward. From the roller to be supported, fixed to the casing,
Adjusting means for adjusting the height of the roller so that the axis of the internal member coincides with the axis of the inner periphery of the casing via the central axis of the supporting shaft sleeve and the internal member; and the internal member. And a means for horizontally moving the suspending tool at a position on the extraction side.

The present invention also relates to a method of using an apparatus for extracting and incorporating an internal member of an apparatus according to the above-mentioned means, that is, an internal member fitted to the inner periphery of a cylindrical casing and having a central axis is removed from the casing. When pulling out horizontally or assembling into the same casing, a supporting shaft sleeve is connected to the shaft end of the center shaft opposite to the drawing direction, and the vertical position of the coaxial sleeve can be adjusted by a support member such as a roller. And adjusting the position of the axis of the internal member and the center axis by vertically moving the support member and the hanging member.

Preferably, the method further comprises a step of sequentially joining a plurality of the support shaft sleeves in accordance with the horizontal extraction of the internal member.

According to the above means and method, the supporting shaft sleeve connected to the central axis of the internal member is supported by the roller, the height of the roller is adjusted by the adjusting means, and the internal member is suspended on the extraction side. By adjusting the length of the rope of the tool, the axis of the inner member and the center axis are aligned with the axis of the inner periphery of the casing, and the inner member and the center axis are extracted from the casing. When the internal member is assembled into the casing, the reverse operation is performed.

As a result, when the internal member is pulled out or assembled, abnormal contact between the internal member and the inner periphery of the casing due to misalignment of the axis or inclination of the internal member,
Further, the damage of the fitting portion between the internal member and the casing caused by this is prevented from occurring.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to FIGS. FIG. 1 and FIG. 2 are explanatory views showing a procedure for extracting and assembling the outer casing and the internal of the double casing pump according to the embodiment of the present invention along with the progress of the work. 1 and 2, reference numeral 11 denotes an outer casing of a double casing pump, 1
3 is an internal assembled on the inner periphery 11a of the casing, 12 is a suction cover, and 14 is the internal 1
A spindle 19 inserted in the center of 3 is an axis end of a pump driving device (not shown).

A plurality of supporting (hereinafter abbreviated as "shaft sleeves") shaft sleeves 1, 2, 3 are fitted on the main shaft 14 from the joint side to the drive shaft end 19, and further, the shaft sleeve 3 on the distal end side is fitted. Are provided with shaft sleeves 4 and 5 in series.
The axes of the shaft sleeves 1, 2, 3, 4, and 5 are correctly aligned with the axis of the main shaft.

Reference numeral 6 denotes a roller, two of which are provided so as to insert the shaft sleeves 1, 2, 3, 4, and 5 from below, and support the shaft sleeves 1, 2, 3, 4, and 5 from below. It has become. Reference numeral 7 denotes a roller receiving base that rotatably supports the pair of rollers 6. Reference numeral 8 denotes a fixing base, which is fixed to the suction cover 12 and the outer casing 11 by bolts 21. An adjusting bolt 9 is screwed into the upper portion of the process table 8, and the roller receiving stand 7 is attached to the upper end of the adjusting bolt 9 so as to be vertically movable along the fixed table 8 by the adjusting bolt 9.

When the internal 13 of the double casing pump constructed as described above is extracted from the external casing 11 by using the internal extracting and incorporating device, the drive of the main shaft 14 is performed as shown in FIG. Shaft sleeves 1, 2, 3,... For support are provided on the shaft end on the machine shaft 19 side.
Are connected by a necessary number, and the shaft sleeve 1 near the main shaft 14 is supported by the rollers 6. Each of the shaft sleeves 1, 2, 3 is correctly formed with the same outer diameter.

Next, the adjusting bolt 9 is operated so that the axes of the shaft sleeves 1, 2, 3,... Coincide with the axis of the main shaft 14 and the center of the inner circumference 11a of the outer casing 11.

Next, a rope 18c suspended from a hook 18a of the monorail 18 is attached to an end of the internal 13.
The main shaft 14 to which the internal 13 and the shaft sleeves 1, 2, 3 are attached is moved to the right in FIGS. At this time, the axial center of the outer periphery of the internal 13 suspended by the monorail 18 is
The length of the rope 18c is adjusted so as to coincide with the axis 1a and keep the internal 13 horizontal. As shown in FIG. 2, when the internal 13 is pulled out near the end of the outer casing 11 and there is a possibility that the shaft sleeve 3 at the tip may come off the roller 6, the shaft sleeves 4 having the same outer diameter may be used. 5 is added to a length that allows the internal 13 to be completely extracted.

According to the above embodiment, the shaft sleeves 1, 2, 3,... Connected to the main shaft 14 are supported by the roller 6, the height of the roller 6 is adjusted by the adjusting bolt 9, and the monorail 18 is adjusted. By adjusting the length of the rope 18c hung on the internal 13 and hanging on the internal 13, the axes of the main shaft 14 and the internal 13 coincide with the axis of the inner circumference 11a of the outer casing 11, and External casing 1 with internal shaft 13 and spindle 14
1 or can be integrated.

Thus, when the internal 13 is pulled out or assembled, a shift of the axis between the internal 13 and the inner periphery 11a of the outer casing 11 and an inclination of the internal 13 can be avoided. The occurrence of damage to the internal 13 and the outer casing 11 caused by abnormal contact is prevented.

When the internal 13 is incorporated into the inner periphery of the outer casing 11, the procedure may be performed in the reverse order of the extraction. That is, the internal 13 is suspended from the monorail 18 via the wire rope 18b, the hook 18a, and the suspension rope 18c, and
Are supported by the rollers 6 while the height is adjusted by the adjusting bolts 9, so that the shaft center of the internal 13 and the main shaft 14, the inner periphery 11a of the casing, and the shafts 1, 2, 3,. After aligning the centers, the monorail is moved to the left in FIGS. 1 and 2, and the internal 13 is fitted to the inner circumference 11 a of the casing 11.

In the above embodiment, the double casing pump has been described. However, the present invention is directed to the extraction of the internal member of all the devices in which the internal member is installed in the inner periphery of the cylindrical casing so as to be able to be extracted in the horizontal direction. Applicable for incorporation.

[0029]

The present invention is configured as described above.
According to the means and the method according to the present invention, the supporting shaft sleeve is connected to the central shaft of the internal member, the coaxial sleeve is supported by the roller so that the vertical position can be adjusted, and the extraction side of the internal member is hung by the hanging device. Since it is suspended so that it can move up and down, the axis of the internal member and the center of the inner periphery of the casing can be surely matched by a simpler operation than the conventional method.

As a result, when the inner member is pulled out of the inner periphery of the casing or when the inner member is assembled into the casing, abnormal contact due to a deviation of the axial center or a relative inclination between the inner member and the inner periphery of the casing occurs. It is possible to prevent damage to the fitting portion between the casing and the internal member that is caused.

Further, the extracting and incorporating device is as follows.
Since it can be configured with a simple supporting shaft sleeve and roller, and roller height adjusting means, there is no long member or weight member, the device is simple, the manufacturing cost is significantly lower than the conventional one, and the cost is lower. Become.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a state before an internal extraction of a double casing pump according to an embodiment of the present invention and an extraction of an installation device.

FIG. 2 is a cross-sectional view showing a state during the internal withdrawal in the embodiment.

FIG. 3 is a cross-sectional view of an internal extracting and incorporating device in a conventional double casing pump.

[Explanation of symbols]

 1, 2, 3, 4, 5 Supporting shaft sleeve 6 Roller 7 Roller receiving stand 8 Fixing stand 9 Adjusting bolt 11 Outer casing 11a Inner circumference of outer casing 13 Internal 14 Main shaft 18 Monorail 18a Hook 18c Rope

Claims (3)

[Claims] 1. A device for extracting an internal member fitted with an inner periphery of a cylindrical casing and having a central axis from the casing in a horizontal direction or extracting an internal member of a device to be incorporated in the casing, and incorporating the internal member. A supporting shaft sleeve connected to the shaft end opposite to the direction in which the center shaft is withdrawn, a roller for supporting the supporting shaft sleeve from below, and fixed to the casing, adjusting the height of the roller. Adjusting means for aligning the axis of the inner member with the axis of the inner periphery of the casing via the support shaft sleeve and the central axis of the inner member, and suspending the inner member at a position on the extraction side; A device for extracting and incorporating an internal member of a device, comprising: a hanging tool; and means for horizontally moving the hanging tool. 2. When extracting an internal member fitted with an inner periphery of a cylindrical casing and having a central axis from the casing in the horizontal direction or incorporating the internal member into the casing,
A support shaft sleeve is connected to a shaft end of the center shaft opposite to the withdrawal direction, and the support shaft sleeve is supported by a support member such as a rotor so that the vertical position can be adjusted. A step of suspending a portion on the extraction side with a suspender, and adjusting the axial position of the internal member and the central axis by vertically moving the support member and the suspender. Method. 3. The method according to claim 2, further comprising the step of sequentially joining a plurality of said support shaft sleeves in accordance with the horizontal extraction of said internal member.