JPH08245114A - Installation method of hydraulic elevator - Google Patents

Abstract

PURPOSE: To connect an upper part jack and a lower part jack to each other without requiring installation of a jig except for those jigs provided herewith by practicing processes of assembling a workbench attached on an upper part of a cage frame, etc., after providing a working floor on an upper part of an elevator shaft and centering and erecting a guide rail. CONSTITUTION: A working floor is at first assembled on an upper part of an elevator shaft 1, a lower part guide rail 9a is centered and erected on a wall surface of the elevator shaft 1 through a bracket 11 at the time of installing a hydraulic elevator. Thereafter, a cage frame 7 to engage with the lower part guide rail 9a and a workbench 24 attached on its upper part are assembled. Thereafter, a jack base 2 is centered and fixed on a lower part of the elevator shaft 1, a lower part jack 5b is erected on the jack base 2, an upper part jack 5a is temporarily placed on the lower part of the elevator shaft 1, and a pulley 12 is installed on a plunger 5d of the upper part jack 5a. Thereafter, the upper part jack 5a is lifted, the lower part jack 5b is rotated by the workbench 24 and the lower and upper part jacks 5b, 5a are connected to each other.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of installing a hydraulic elevator, in which a workbench temporarily installed on the upper part of a car frame of a car is moved up and down by a hydraulic jack, and equipment in the hoistway is installed from this workbench. .

[0002]

2. Description of the Related Art Generally, a hydraulic elevator is mounted on a hydraulic jack standing upright in a hoistway and an upper end of a plunger sliding in the hydraulic jack, with one end on the hoistway side and the other end on the car side. And a pulley provided with a rope to be connected, and the carriage is moved up and down via the rope according to the operation of the hydraulic jack.

In the hydraulic elevator installation method thus constructed, for example, as described in JP-A-2-204292, first, a work floor is provided above the hoistway, and a guide rail core is provided. Then, the car frame is taken out to stand upright in the hoistway, a car frame is assembled at the lower part of the hoistway and engaged with the guide rail, and a work table is attached on the car frame. Next, the plunger rail is erected, the lower jack constituting one of the hydraulic jacks is temporarily fixed to the jack base at the lower part of the hoistway, and the other one of the hydraulic jacks is rotatably connected to the lifting means. A guide metal fitting for holding the upper jack constituting the above is attached to an upper end of the upper jack, the guide metal fitting is engaged with the plunger rail, and the upper jack is moved along the plunger rail by the lifting means. The upper jack is rotated in this state by lifting, and the upper jack and the lower jack are connected to each other to stand upright.

After that, the hydraulic jack and the hydraulic power unit are connected via an oil feed pipe, and a temporary operation panel connectable to the hydraulic power unit via a construction cable is mounted on the workbench. Next, the hydraulic jack is lifted to remove the guide fitting, the pulley is attached to the upper part of the hydraulic jack, and the rope is wound around this pulley, and one end of the rope is on the hoistway side and the other end is on the car frame side. Fix it. Then, the temporary operation panel is operated to operate the hydraulic jack, and the car frame and the workbench are moved up and down via the rope. Then, the worker is to install equipment such as wiring and piping in the hoistway from the workbench.

[0005]

By the way, in the above-mentioned conventional hydraulic elevator installation method, when connecting the upper jack and the lower jack, a guide fitting for rotatably holding the upper jack is required. The guide metal fittings are jigs other than the main fittings, and therefore require removal work, resulting in an increase in work steps.

The present invention has been made in view of the situation in the prior art as described above, and an object thereof is to connect the upper jack and the lower jack without the need for mounting a jig other than the main component. It is to provide a method of installing a hydraulic elevator.

[0007]

In order to achieve this object, the present invention provides a hydraulic jack which is erected in the hoistway and a pulley which is mounted on the upper end of a plunger sliding in the hydraulic jack. , A device in a hoistway used for a hydraulic elevator having a car frame to which one end of a rope wound around this pulley is connected, and raising and lowering the car frame via the rope according to the operation of the hydraulic jack. In the installation method of the hydraulic elevator to perform the installation work, first, a work floor is provided on the upper part of the hoistway, and based on the piano wire hung from the centering template installed at the top of the hoistway on this work floor, Set up a pair of guide rails at the bottom of the hoistway, centering them upright, and assemble the car frame that engages with these guide rails and the workbench attached to the top of the car frame. A lower jack that constitutes one of the hydraulic jacks is erected at a lower portion of the hoistway, and the pulley is attached to an upper end of a plunger that slides in an upper jack that constitutes the other of the hydraulic jacks. After that, the upper jack is lifted, the lower jack is rotated on the workbench to connect the lower jack and the upper jack, then the plunger rail is lifted, and the workbench is moved from the workbench to the plunger rail. While engaging the guide device provided in the pulley and fixing the lower portion of the plunger rail, after that,
The hydraulic jack and the hydraulic power unit are connected via an oil feeding pipe, the hydraulic jack is operated to hang a rope from the working floor to the pulley, and one end of the rope is on the hoistway side and the other end is the car. It is attached to the frame side, and then the car frame is moved up and down to perform installation work of equipment in the hoistway from the work table.

[0008]

As described above, according to the present invention, first, the working floor is provided on the upper part of the hoistway, and based on the piano wire hung from the centering template installed on the top of the hoistway on the working floor, A pair of guide rails are centered and erected at the bottom of the hoistway, and a car frame that engages with these guide rails,
Also, assemble the work table attached to the top of the car frame. Next, the lower jack is erected at the lower part of the hoistway, and a pulley is attached to the upper end of the plunger that slides in the upper jack.After that, the upper jack is lifted and the lower jack is lifted on the work table. Rotate to connect the lower jack and the upper jack.

Next, the plunger rail is lifted, the guide device of the pulley is engaged with the plunger rail from the work table, and the lower portion of the plunger rail is fixed. Then, the hydraulic jack and the hydraulic power unit are connected via an oil feeding pipe, and the hydraulic jack is operated to hang a rope from the working floor to the pulley, and one end of the rope is connected to the hoistway side and the other end. To the car frame side. Next, the car frame is moved up and down, and the work for installing the equipment in the hoistway is performed from the work table.

As described above, by rotating the lower jack and connecting the lower jack and the upper jack, the hydraulic jack can be attached without the need to mount a jig other than the main component.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a hydraulic elevator installation method according to the present invention will be described below with reference to the drawings. FIG. 1 is a flow chart showing an embodiment of a hydraulic elevator installation method according to the present invention.
2 is a side view for explaining the connection between the pulley and the hydraulic jack, FIG. 3 is a side view for explaining the connection between the upper jack and the lower jack, and FIG. 4 is a side view showing the standing state of the guide rail and the plunger rail. 5 and 6 are side views showing the operation of winding the rope around the pulley.

Generally, as shown in FIG. 5, a hydraulic elevator is provided upright on a jack stand 2 in the lower part of a hoistway 1 and connected to a hydraulic power unit 4 via an oil feed pipe 3, and a hydraulic jack 5. According to the operation of the car 6, the car frame 7 that moves up and down in the hoistway 1 via the rope 6, and the hydraulic jack 5
Plunger rail 8 for guiding the vertical movement of the
And a guide rail 9 for guiding the raising and lowering of the car frame 7, and a bracket 10 for fixing the plunger rail 8 to the hoistway 1.
And a bracket 1 for fixing the guide rail 9 to the hoistway 1.
1 and. Further, as shown in FIG. 3, the hydraulic jack 5 can be divided into an upper jack 5a and a lower jack 5b, and includes a cylinder 5c and a plunger 5d that slides inside the cylinder 5c. A guide device (not shown) engageable with the plunger rail 8 is provided on the upper part of the
A pulley 12 around which a rope 6 whose side and other ends are connected to the car frame 7 side is wound is attached. In addition, screw portions (not shown) that are screwed into each other are respectively provided at connection portions of the plunger 5d of the upper jack 5a and the plunger 5d of the lower jack 5b.

When the hydraulic elevator constructed as described above is installed, as shown in FIG. 2, a work floor 20 assembled at the uppermost floor position of the hoistway 1 and an upper template 21 installed at the upper part of the hoistway 1 are installed. A lower template 22 installed at the lower part of the hoistway 1, a chain block 23 mounted near the work floor 20 for hoisting equipment, and a work table 24 assembled on top of the car frame 7 are arranged.

In this embodiment, first, as step S1, the work floor 20 is assembled on the upper part of the hoistway, and as step S2, the upper template 21 is arranged above the work floor 20 and the lower template is formed on the lower part of the hoistway 1. 22 is attached respectively, and a piano wire (not shown) is stretched between the upper template 21 and the lower template 22 in step S3. Next, as step S4, a pair of lower guide rails 9a are centered on the lower part of the hoistway based on the above-mentioned piano wire, and are erected on the wall surface of the hoistway 1 via brackets 11,
In step S5, the car frame 7 that engages with the lower guide rail 9c is assembled, and in step S6, the workbench 24 attached to the upper part of the car frame 7 is assembled.

Next, in step S7, the jack base 2 is centered and fixed to the lower portion of the hoistway 1, and the lower jack 5b is erected on the jack base 2, and in step S8, the upper jack 5a is temporarily placed under the hoistway 1. Then, as shown in FIG. 2, the pulley 12 is hoisted by the chain block 23, the pulley 12 is attached to the plunger 5d of the upper jack 5a, and then the attachment wire of the chain block 23 is attached to the upper jack 5a as shown in FIG. Attached to the cylinder 5c, and the chain block 23 lifts the upper jack 5a above the lower jack 5b.
As step S9, the lower jack 5b is rotated on the workbench 24 to connect the lower jack 5b and the upper jack 5a, and centering and fixing.

Next, as step S10, as shown in FIG. 4, the upper guide rail 9a is hoisted by the chain block 23, connected to the intermediate guide rail 9b at the workbench 24, and then hoisted again, and centered and fixed. It is connected to the lower guide rail 9c which is provided and is temporarily fixed to the wall surface of the hoistway 1 via the bracket 11. Further, the plunger rail 8 is lifted by the chain block 23, a guide device (not shown) provided on the pulley 12 is engaged with the plunger rail 8 at the work table 24, and the plunger rail 8 is moved up and down via the bracket 10. Temporarily fix it to the wall of Road 1. Then, in step S11, the hydraulic power unit 4 is installed, the hydraulic power unit 4 and the hydraulic jack 5 are connected via the oil feed pipe 3, and a temporary operation panel (not shown) is attached to the workbench 24 to perform the temporary installation. A construction cable (not shown) is arranged between the operation panel and the hydraulic power unit 4. In step S12, the temporary operation panel is operated to raise the hydraulic jack 5 as shown in FIG. 5, and in step S13, the rope 6 is hung from the work floor 24 on the pulley 12, and one end of the rope 12 is connected to the hoistway 1 side. The other end is attached to the car frame 7 side, and in step S14, the car frame 7 is moved up and down to sequentially perform centering and fixing of the plunger rail 8 and the guide rail 9 from the workbench 24.

Next, in step S15, the unnecessary work floor 20, upper template 21, and lower template 22 are dismantled, other elevator parts are attached in step S16, and piping work in the hoistway 1 is performed in step S17. Wiring work is performed, the workbench 24 assembled on the upper part of the car frame 7 is disassembled in step S18, a side plate (not shown), a ceiling, and the like are attached to assemble the car in step S19, and test operation and adjustment are performed in step S20.

In the embodiment constructed as described above, the lower jack 5b is rotated to connect the lower jack 5b and the upper jack 5a to each other, so that the hydraulic jack 5 does not need to be equipped with any jig other than the main component. Can be installed.

[0019]

EFFECTS OF THE INVENTION Since the present invention is constructed as described above, the hydraulic jack can be attached without the need to attach a jig other than the main component, thereby reducing the process of installation work. Therefore, it is possible to reduce the installation work time and the labor of the operator.

[Brief description of drawings]

FIG. 1 is a flow chart showing an embodiment of a hydraulic elevator installation method according to the present invention.

FIG. 2 is a side view illustrating a connection between a pulley and a hydraulic jack.

FIG. 3 is a side view illustrating a connection between an upper jack and a lower jack.

FIG. 4 is a side view showing an upright state of a guide rail and a plunger rail.

FIG. 5 is a side view showing a work of winding a rope around a pulley.

[Explanation of symbols]

 1 Hoistway 2 Jack stand 4 Hydraulic power unit 5 Hydraulic jack 5a Upper jack 5b Lower jack 5c Cylinder 5d Plunger 6 Rope 7 Car frame 8 Plunger rail 9 Guide rail 12 Pulley 20 Working floor 24 Working platform

Claims (1)

[Claims] 1. A hydraulic jack installed upright in the hoistway,
It is used in a hydraulic elevator having a pulley mounted on the upper end of a plunger that slides in the hydraulic jack and a car frame to which one end of a rope wound around the pulley is connected, and is used according to the operation of the hydraulic jack. In the installation method of the hydraulic elevator, in which the car frame is moved up and down via the rope to install the equipment in the hoistway, first, a work floor is provided on the upper part of the hoistway, and the work floor is installed on the top of the hoistway. Based on the piano wire hung from the installed centering template, a pair of guide rails are centered and erected at the lower part of the hoistway, and a car frame and a car are engaged with these guide rails. The workbench attached to the upper part of the frame is assembled, and then the lower jack that constitutes one of the hydraulic jacks is erected on the lower part of the hoistway and Is attached to the upper end of a plunger that slides in the upper jack that constitutes the other of the hydraulic jacks, then the upper jack is lifted, and the lower jack is rotated on the workbench to make the lower jack Connect the upper jack, then lift the plunger rail, engage the guide device provided on the pulley from the workbench to the plunger rail and fix the lower portion of the plunger rail, and then, A hydraulic jack and a hydraulic power unit are connected via an oil feeding pipe, the hydraulic jack is operated to hang a rope from the working floor to the pulley, and one end of the rope is on the hoistway side and the other end is the car frame. Side, and then raises and lowers the car frame to perform equipment installation work from the workbench in the hoistway. The method of mounting a hydraulic elevator, characterized and.