JPS58144668A - Method and device for dismantling and assembling runner for rotary hydraulic machine - Google Patents

Abstract

PURPOSE:To permit to adopt a cylinder of short length by a method wherein hanging down or hanging up of the runner by the cylinder is effected in two steps in case the runner is hang down or hang up to the intermediate position of the vertical path thereof upon dismantling or assembling the runner under a con dition that the runner is supported by the hydraulic cylinder. CONSTITUTION:In case the runner 22, coupled to a main shaft 21, is removed, a runner cone 23, a draft tube 25 and the like are removed under a predetermined sequence, thereafter, the hydraulic cylinder 14 is attached to the lower end of the main shaft 21 while a runner supporting plate 18 is attached to the lower end of the runner 22. Next, the runner 22 and a draft pipe 26 are coupled by a turnbuckle 39 and the clamping of the runner 22 by bolts is released. Subsequently, the cylinder 14 is extended to hang down the runner 22 and the pipe 26 to the intermediate position, thereafter, they are held once by connecting them by stay bolts 36. The supporting plate 18 is supported by a lower supporting plate 16 of the cylinder 14 under this condition, thereafter, the cylinder 14 is extended again to hang down the runner 22 and the pipe 26 onto a scaffold therefor.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for disassembling and assembling a rotary hydraulic machine, and an apparatus therefor. This invention relates to a method for disassembling and assembling a mechanical launch and its apparatus.

In the conventional two-runner disassembly method, for example, as shown in No. 1 and No. 2, the runner 2 connected to the main shaft 1 of the rotating machine is suspended together with the upper draft pipe 3 to the upper surface of the opening of the draft tube 4 by a hydraulic cylinder 5. Next, the upper draft pulp 3 is transported along a transport path in the transverse direction using wheels 6 provided thereon. Other figures include
7 is a speed link, 8 is a guide vane, 9.10 is an upper and lower cover, and 61.11 is a turnbuckle for coupling. However, with this method, the stroke of the hydraulic cylinder for suspending the 2t runner to the floor of the transport path becomes longer and the weight increases, making removal and installation work difficult, and the hydraulic pump driving the runner also has a large capacity. must be used. Furthermore, it is extremely difficult to accurately machine a cylinder with a long stroke. Furthermore, when carrying out the suspended lunch 2 in the lateral direction, it was frequently necessary to remove the hydraulic cylinder 5, which cannot be pulled horizontally due to the portion indicated by H in FIG. 1, to its S degree.

Furthermore, it is also necessary to provide a support member 12 to the draft tube 4 in order to support the hydraulic cylinder 5 that has been removed in this manner (the supported state is indicated by a chain line in the figure).

SUMMARY OF THE INVENTION The object of the present invention is to provide a method and apparatus for disassembling and assembling a two-liner rotary hydraulic machine, which eliminates the drawbacks of the prior art and allows the two-liner to be disassembled and assembled quickly and easily.

According to the present invention, the launch of a rotary hydraulic machine is connected to the main shaft while being supported by a vertically movable hydraulic cylinder, and is suspended along the vertical path between the 9th position and the position on the traverse conveyance road surface below the 9th position. In a method for disassembling and assembling a rotary hydraulic machine launch by lowering or lifting, the runner is suspended or lifted to an intermediate position of the vertical path with the runner supported by the hydraulic cylinder, and the launch is supported at a position relative to the hydraulic cylinder. The above-mentioned rotation is characterized in that the above-mentioned rotation is carried out by moving the above-mentioned object downwardly when suspending it and upwardly when lifting it, and then further suspending or lifting it along the vertical path to the desired position. A hydraulic machine launch disassembly and assembly method is provided.

Furthermore, according to the invention, as an apparatus for carrying out the method, the launch of a rotary hydraulic machine is suspended along a vertical path between a position connected to the main shaft and a position below it on the traverse conveying road surface. In a launch disassembly and assembly device for a rotary hydraulic machine equipped with a vertically movable hydraulic cylinder for lifting or lifting, the support part of the launch is moved from one support position to the other support position above and below the hydraulic cylinder. The apparatus for disassembling and assembling a runner for a rotary hydraulic machine is provided with a device for temporarily holding and holding the launch when moving the support position. provided.

Embodiment t'' of the present invention will be described in detail below with reference to the drawings.

Figures 2 to 48 show the procedure for applying the method of the present invention to the lowering and disassembly of a runner, and Figures 5 to 8 show details of the hydraulic cylinder and its attached parts as the main parts of the device of the present invention, FIGS. 9 to 12 show the transportation mode of each part disassembled from the main shaft, and FIGS. 13 and 14 are diagrams showing the structure and function of the alignment device for the hydraulic cylinder with respect to the main shaft.

First, an overview of the hydraulic cylinder as a main part of the device used to carry out the method of the present invention will be explained. As shown in Fig. An upper support plate 15 and a lower support plate 16 for supporting the launch are fixedly attached near the upper and lower ends of the cylinder, respectively. 1 in the diagram
7 shows a spherical bearing which will be explained in detail in the rear VC Figures 13 and 114. As shown in FIG. 6, the upper support plate 15 is provided with a protrusion 20f on its periphery that can be inserted into the hole 19 in the runner support plate 18, and this protrusion can be inserted into the hole 19 in the runner support plate 18 by rotation of the cylinder, as shown in FIG. In this manner, the two-inner support plate 18 is engaged and supported at the middle portion of the hole 19. The position of this retaining support is completely determined by the set pin 30 as shown in FIG. The ceramic lower support plate 16 is also formed in the same manner as the upper support plate 15 described above.

The method of the present invention for disassembling a launch using such a hydraulic cylinder 14 will be explained with reference to FIGS. 2 to 4.

To remove the runner 22 connected to the main shaft 21, the second
As shown in the figure, attach the runner cone 23 to the stay bolt 2.
4, and furthermore, it is laid on the lower trough pipe 25 by the chain plot 24 attached to the lower end of the main shaft 21, and suspended on the work scaffold 28 at 9. Then lower draft pipe 2
5 and the upper draft pipe 26 and the draft tube 27, respectively. In addition, in the figure, 29 is a speed ring, 31° and 32 are upper and lower covers, and 33 is a guide vane. Lower draft pipe 2
5 has wheels 35 as shown in FIGS. 9 and 10, and is carried out on rails 35A along the direction of arrow A in FIG. 3, and further along the direction of arrow B in FIG. When it is lifted, the money is carried out.

Next, as shown in FIG. 3, a working scaffold 34t is laid on the upper surface of the opening of the draft tube 27.

Chain plot 2 attached to the lower end of the main shaft 21
4 is removed, and the piston front of the hydraulic cylinder 4 shown in FIG. Here, the launch support plate 18 and the upper support plate 15 of the hydraulic cylinder 14 are first attached as shown in FIG. 15 engages and supports the runner support plate 18, and then, as shown in FIG. 8, after fixing both with a set bin 30, hydraulic pressure is applied to the hydraulic cylinder 14 in the upward direction. Next, the launch 22 and the upper draft pipe 26 are connected with the turnbuckle 39, and the runner coupler bottle is loosened. Remove the IIR between the upper draft pipe 26 and speed ring 29 and set the Stipold 36. Here, the hydraulic cylinder 14
is lowered to suspend the runner 22 and the upper draft pipe 26 to an intermediate position, and are once held by the stay bolts 36. Further, only the hydraulic cylinder 14 is lowered to such an extent that the set bin 30 does not interfere with it, and the upper support plate 15 and the runner support plate 18 are again in the positional relationship shown in FIG. 6, and then the hydraulic cylinder 14t - Hydraulically raised. Hydraulic cylinder 14
The lunch support plate 18 is supported by the lower support plate 16 in the state shown in FIG.

In this supported state, as shown in FIG. 4, the stay bolt 36
The nut at the lower end of is removed, and the hydraulic cylinder 14 is hydraulically lowered to suspend the runner 22 and the upper draft pipe 26 to a predetermined position above the work scaffold 34. The wheels 37 are attached to the upper draft pipe 26 by suspending them from the rails 351. The lower support plate 16 and the second inner support plate 18 of the hydraulic cylinder 14 are changed from the positional relationship shown in FIG. 7 to the state shown in FIG. 6, and the hydraulic cylinder 14 is raised to the dead center by hydraulic pressure. Runner 22 and upper draft pipe 26
As shown in FIG. 12, the hoist is transported laterally within the hatch in the direction of arrow B. The disassembly process of the launch is thus completed and assembly of the launch is carried out by reversing the above procedure.

Here, as shown in FIG. 13, the spherical bearing 17 is attached to the upper end of the cylinder blond 38 of the hydraulic cylinder 14 used in the embodiment of the present invention, and this is installed inside the cylinder rod mounting 7 flange 13. This forms a self-aligning bearing device, which allows the lower end of the hydraulic cylinder 16 to be eccentric with respect to the axis of the main shaft 21 with respect to the bearing center C of the spherical surface of radius R. As shown in FIG. 14, the eccentric area of the lower end of the hydraulic cylinder 16 is expressed as an area E in the maximum extension distance LVr- from the center C of the lower support plate 16 of the cylinder, and is If the center of the runner 22 is within this region E, the runner 22 is lifted under the action of the automatic alignment function with respect to the axis 11iIX of the main shaft 21. In this embodiment, the eccentric region Et10G- can be selected to be large.

As described above, according to the embodiment of the present invention, when disassembling the launch 22 from the main shaft 21, the hydraulic cylinder 14, which is provided with an upper support plate and a lower support plate 15 and 16 at the upper and lower ends, respectively, is used to first disassemble the launch 22 from the main shaft 21. After being supported by the upper support plate 15 and suspended to an intermediate position, the runner 22 is once held in place by the Stibold 36, and then the runner 22 is supported by the lower support plate 16 and further suspended to a predetermined position. Therefore, the required stroke of the hydraulic cylinder for suspending the runner is reduced to approximately 1/2 of that in the conventional case. Therefore, its weight is reduced by half, making it easier to handle, and the cylinder driving force is also significantly reduced. Furthermore, since the total length of the cylinder is halved, the cylinder does not pose any problem during transportation after the runner is removed, and the hydraulic cylinder only needs to be removed once during disassembly and assembly. Furthermore, in this embodiment, the cylinder driving force 38 of the hydraulic cylinder 14 is attached to the main shaft 21 via a spherical bearing 17yk, so that the main shaft 21 during assembly is controlled by its self-aligning function.
It is possible to extremely easily align the two inner cylinders 22 with respect to each other.

According to the present invention, the runner of a rotary hydraulic machine can be disassembled and assembled extremely quickly and easily.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing the steps of a horizontal runner disassembly method according to the prior art, FIGS. 2 to 4 are explanatory diagrams showing the steps in an embodiment of the method of the present invention, and FIG. A front view of the section, Figure 1g6 is an explanatory diagram showing the operation mode of the main part, Fig. 7 is an explanatory diagram showing another operation mode of the main part,
FIG. 8 is a cross-sectional view showing the manner in which the main parts are secured, and FIG. 9 is an explanatory view showing the conveyance state during the implementation procedure of the method of the present invention.
FIG. 10 is an enlarged explanatory view of the main part of FIG. 9, FIGS. 11 and 12 are views showing the transportation and lifting of the disassembly part during the implementation procedure of the method of the present invention, and FIG. FIG. 14 is a partially longitudinal front view showing the main parts of the embodiment of the inventive device, and is an explanatory view showing the functions of the main parts. 14... Hydraulic cylinder, 15... Upper support plate, 16
... Lower support plate, 17 ... Spherical bearing, 18 ... Runner support plate, 21 ... Main shaft, 22 ... Runner, 25
...Lower draft pipe, 26...Upper draft pipe, 36...Stay bolt. Agent Patent attorney Yao Takahashi also j (2) Akira 4 Concave height 5 (21 Asahi C figure also 12 Measure 9 Fixed IQ ffi F11 figure"'-27'

Claims (1)

[Scope of Claims] 1. The second engine of a rotary hydraulic machine is supported by a vertically movable hydraulic cylinder and connected to the main shaft, and is connected to a vertical path between the ninth position and a position on the traversing conveyance road surface below it. In a method for disassembling and assembling a rotary hydraulic machine launch by suspending or lifting the launch along the runner, the launch is suspended or lifted to an intermediate position of the vertical path while the launch is supported by the hydraulic cylinder; The support position for the suspension is moved downward when the suspension is suspended and upward when the suspension is lifted, and then the suspension is further suspended or lifted along the vertical path to the desired position. A method for disassembling and assembling a runner of the rotary hydraulic machine. 2. Equipped with a vertically movable hydraulic cylinder for suspending or hoisting the 2nd cylinder of the rotary hydraulic machine along a vertical path between the position where it is connected to the main shaft and the position below it on the traversing conveyance road surface. In the launch disassembly and assembly device for rotary hydraulic machinery, support parts are provided above and below the hydraulic cylinder, respectively, to move and support the support parts of the two runners from one support position to the other support position. and a device for temporarily securing and holding the launch during movement of the support position. 3. The rotary hydraulic machine according to claim 2, wherein a spherical bearing for automatically aligning the main shaft and the cylinder shaft is provided on the main shaft mounting portion of the rod of the hydraulic cylinder. Lunch disassembly and assembly equipment.