JP3155693B2 - Hydraulic elevator installation method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for installing a hydraulic elevator, which raises and lowers a work table temporarily provided above a car frame of a car by using a hydraulic jack, and installs equipment in a hoistway from the work table. .

[0002]

2. Description of the Related Art In general, a hydraulic elevator is mounted on an upper end of a hydraulic jack erected in a hoistway and a plunger sliding in the hydraulic jack, and one end is mounted on a hoistway side and the other end is mounted on a car side. A pulley having a main rope connected thereto, and the car is lifted and lowered via the main rope in accordance with the operation of the hydraulic jack.

A method of installing a hydraulic elevator constructed as described above is disclosed in, for example, Japanese Patent Application Laid-Open No. 2-204292, in which a work floor is first provided above the hoistway, and a guide rail core is provided. The elevator is set up in the hoistway, and a car frame is assembled at the lower part of the hoistway to engage with the guide rails, and a work table is provided on the car frame. Next, a plunger rail is erected, and a lower jack that constitutes one of the hydraulic jacks is temporarily fixed to a jack base at the lower part of the hoistway, and is connected to lifting means, and is rotatably connected to the other of the hydraulic jacks. A guide fitting for holding the upper jack is mounted on the upper end of the upper jack, the guide 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, and the upper jack and the lower jack are connected and erected.

[0004] 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 work table. Next, the hydraulic jack is lifted to remove the guide fitting, and the pulley is attached to the upper portion of the hydraulic jack, a rope is wound around the pulley, one end of the rope is connected to the hoistway side, and the other end is connected to the car frame side. Fix it. Thereafter, the temporary operation panel is operated to operate the hydraulic jack, and the car frame and the work table are raised and lowered via the rope. Then, the worker performs the work of installing devices such as wiring and piping in the hoistway from the work table.

[0005]

In the above-mentioned conventional method of installing a hydraulic elevator, when connecting the upper jack and the lower jack, a guide fitting for rotatably holding the upper jack is required. The guide bracket becomes a jig other than the main component, and requires removal work. Then, for this removal work, after installing the hydraulic jack and piping with the hydraulic power unit, operate the hydraulic jack to raise the plunger, remove the guide bracket, install the pulley, and temporarily hook the main rope. ,
Next, it is necessary to lower the hydraulic jack to fix the main rope.Therefore, even after the connection between the hydraulic jack and the hydraulic power unit, much work is required, and it takes a lot of time to move the car frame up and down. There is a problem that it takes time.

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances in the prior art, and an object of the present invention is to provide a method of installing a hydraulic elevator capable of raising and lowering a car frame at a relatively early time.

[0007]

In order to achieve this object, the present invention provides a hydraulic jack erected in a hoistway and a pulley mounted on an upper end of a plunger sliding in the hydraulic jack. Is used in a hydraulic elevator having a car frame to which one end of a rope wound around the pulley is connected, and lifts and lowers the car frame via the rope in accordance with the operation of the hydraulic jack, and equipment in a hoistway. In the installation method of the hydraulic elevator performing the installation work, first, a work floor is provided at the upper part of the hoistway, and the lower part of the hoistway is based on a piano wire drooped from a centering template installed on the work floor. A pair of guide rails are centered and erected, and a car frame that engages with these guide rails and a work table attached to an upper portion of the car frame are assembled. A lower jack, which constitutes one of the jacks and has a built-in lower plunger, is erected at the lower part of the hoistway, and then an upper jack, which constitutes the other of the hydraulic jacks and has a built-in upper plunger, With the main rope wrapped around the pulley provided at the upper end of the upper plunger, it is hoisted by a lifting device at the top of the hoistway, and these upper and lower jacks are connected using a connection hiring. And the other end is attached to the car frame side, and the plunger rail and the remaining guide rail are lifted and temporarily fixed, and then
The hydraulic jack and the hydraulic power unit are connected via an oil feed pipe, and the hydraulic jack is operated to raise and lower the car frame via the main rope. The installation work of the equipment is performed.

[0008]

As described above, according to the present invention, a work floor is first provided at the upper part of the hoistway, and based on the piano wire suspended from the centering template installed on the work floor, the work floor is provided at the lower part of the hoistway. A pair of guide rails are centered and erected, and a car frame that engages with these guide rails and a work table attached to an upper portion of the car frame are assembled.

Next, a lower jack having a built-in lower plunger is erected below the hoistway, and a pulley is mounted on the upper end of the plunger sliding in the upper jack, and a main rope is wound around the pulley. In this state, the upper jack is lifted by a lifting device at the upper part of the hoistway, and these upper and lower jacks are connected to each other using a connection hire.

Then, one end of the main rope is connected to the hoistway,
The other end is attached to the car frame side, the plunger rail and the remaining guide rail are lifted and temporarily fixed, and then the hydraulic jack and the hydraulic power unit are connected via an oil feed pipe to operate the hydraulic jack. The car frame is moved up and down via the main rope, and the installation work of the equipment in the hoistway is performed from the worktable above the car frame.

As described above, the upper jack is lifted with the pulley attached to the upper end of the upper plunger and the main rope is hung, and the upper and lower plungers and the upper and lower jacks are connected. The car frame can be raised and lowered at the time when the installation of the rope and the connection between the hydraulic power unit and the hydraulic jack are completed, that is, at a relatively early time.

[0012]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a hydraulic elevator installation method according to an embodiment of the present invention. FIG. 1 is a flowchart showing one embodiment of a method of installing a hydraulic elevator according to the present invention;
2 is a side view showing a state in which a work floor is installed above the hoistway and a piano wire is stretched, FIG. 3 is a side view showing an installation state of the lowermost guide rail, and FIG. 4 is an installation of a car frame and a work table. FIG. 5 is a side view showing a state where a lower jack is installed and an upper jack is lifted, FIG. 6 is a side view showing a state where a main rope is fixed to a car frame and a hoistway wall, and FIG. FIG. 8 is a side view showing a standing state of the guide rail and the plunger rail, and FIG. 8 is a side view showing a state in which the car frame and the work table are raised and lowered.

In general, a hydraulic elevator is erected on a jack base 2 at a lower portion inside a hoistway 1 as shown in FIGS. 7 and 8, and a hydraulic jack 5 connected to a hydraulic power unit 4 through an oil feed pipe 3, Main rope 6 according to the operation of jack 5
, A car frame 7 that moves up and down in the hoistway 1, a plunger rail 8 that guides the hydraulic jack 5 in the up and down direction, a guide rail 9 that guides the lift of the car frame 7, and a plunger rail 8 Bracket 1 for fixing to the hoistway 1
0 and a bracket 11 for fixing the guide rail 9 to the hoistway 1. As shown in FIG. 4, the hydraulic jack 5 can be divided into an upper jack 5a and a lower jack 5b, and comprises a cylinder 5c and a plunger 5d sliding inside the cylinder. A guide device (not shown) that can be engaged with the plunger rail 8 is provided at an upper portion of the
A pulley 12 around which the rope 6 whose side and the other end are connected to the car frame 7 side is mounted. At the joint between the plunger 5d of the upper jack 5a and the plunger 5d of the lower jack 5b, screw portions (not shown) which are screwed to each other are provided.

When the hydraulic elevator constructed as described above is installed, a work floor 20 assembled on the top floor of the hoistway 1, an upper template 21 installed on the upper part of the work floor 20, A lower template 22 installed at the lower part, a chain block 23 mounted near the work floor 20 for lifting equipment, a work table 24 assembled on the upper part of the car frame 7, an upper template 21 and a lower template 22. Piano wire 25 stretched between
Are arranged.

In this embodiment, first, as step S1, the work floor 20 is assembled above the hoistway, and as step S2, the upper template 21 and the chain block 23 above the work floor 20, and the hoistway 1 The lower template 22 is attached to the lower part, and the upper template 21 and the lower template 2 as shown in FIG.
2 and a piano wire 25 is laid. Next, as shown in FIG. 3, in step S4, a pair of lower guide rails 9a is centered on the lower part of the hoistway based on the above-mentioned piano wire, and the lower guide rail 9a is erected on the wall surface of the hoistway 1 with the bracket 11 therebetween. Thereafter, as shown in FIG. 4, as step S5, the car frame 7 to be engaged with the lower guide rail 9a is assembled, and
The work table 24 attached to the upper part of the car frame 7 is assembled as 6 and the jack stand 2 is centered and fixed to the lower part of the hoistway 1 as step S7.

Next, the lower jack 5b is inserted into the jack base 2.
And the upper jack 5a is connected to the hoistway 1 in step S8.
The pulley 12 is temporarily placed at the lower part, and the pulley 12 is lifted by the chain block 23.
d and the pulley 12 has a main rope 6
Wrap around. Thereafter, as shown in FIG. 5, in step S9, the cylinder block 5c of the upper jack 5a around which the main rope 6 is wound around the pulley 12 is lifted by the chain block 23 via the jack hanging device 26, and the upper jack 5a is moved downward. The plunger 5d of the upper jack 5a and the plunger 5d of the lower jack 5b are moved to the upper side of the jack 5b using the jack mounting described in Japanese Patent Application No. 7-35552 on the work table 24 or the car frame 7. The upper jack 5a and the lower jack 5b are connected to each other by connecting the cylinder 5c of the upper jack 5a and the cylinder 5c of the lower jack 5b, and are aligned and fixed. At this time, since the jack suspension device 26 is hung on the thick portion of the upper end of the cylinder 5c of the upper jack 5a and lifted, the chain block 2 is fixed after the jack 5 is centered and fixed.
When the chain of No. 3 is lowered, the jack suspension device 26 descends along the cylinder 5c. Therefore, the jack suspension device 26 is removed from the work table 24, and the chain block 23 is removed from the jack 5.

Next, as shown in FIG. 6, in step S10, one end of the rope 12 wound around the pulley 12 is attached to the hoistway 1 and the other end to the car frame 7, and thereafter, as shown in FIG. In step S11, the upper guide rail 9c is lifted by the chain block 23, connected to the intermediate guide rail 9b by the work table 24, lifted again, and connected to the lower guide rail 9a which has been already centered and fixed.
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 on the work table 24, and the plunger rail 8 is moved up and down via the bracket 10. Temporarily fix to the wall of road 1. Thereafter, the hydraulic power unit 4 is installed in step S12,
In step S13, 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 mounted, and a construction cable (not shown) is disposed between the temporary operation panel and the hydraulic power unit 4. Next, the unnecessary work floor 20 is dismantled in step S14.

Next, as shown in FIG. 8, the car frame 7 is raised and lowered in step S15, and the plunger rails 8 and the guide rails 9 are sequentially centered and fixed from the work table 24. Attach the other elevator parts in the road 1, perform the piping work and the wiring work in the hoistway 1 in step S17, and remove the unnecessary upper template 21 and lower template 2 from the workbench 24.
Dismantle 2. Thereafter, the workbench 24 assembled on the upper part of the car frame 7 is disassembled in step S18, and a car is assembled by attaching a side plate, a ceiling, etc. (not shown) in step S19, and test operation and adjustment are performed in step S20.

In the embodiment thus constructed, the upper jack 5a is lifted with the pulley 12 attached to the upper end of the upper plunger 5d and the main rope 6 is hung, and the upper and lower plungers 5d and 5a, 5a
In order to perform connection of b, the car frame 7 is moved up and down at the time when the temporary fixing of the guide rail 9, the attachment of the main rope 6 and the connection between the hydraulic power unit 4 and the hydraulic jack 5 are completed, that is, at a relatively early time. Can be.

[0020]

Since the present invention is constructed as described above, the car frame can be raised and lowered at a relatively early point in the installation work of the hydraulic elevator, thereby efficiently mounting the equipment in the hoistway. Performing well, and thus shortening the working time.

[Brief description of the drawings]

FIG. 1 is a flowchart showing one embodiment of a method for installing a hydraulic elevator according to the present invention.

FIG. 2 is a side view showing a state where a work floor is installed above a hoistway and a piano wire is stretched.

FIG. 3 is a side view showing an installation state of a lowermost guide rail.

FIG. 4 is a side view showing an installed state of a car frame and a workbench.

FIG. 5 is a side view showing a state where a lower jack is installed and an upper jack is lifted.

FIG. 6 is a side view showing a state where a main rope is fixed to a car frame and a hoistway wall.

FIG. 7 is a side view showing a standing state of a guide rail and a plunger rail.

FIG. 8 is a side view showing a state where the car frame and the work table are raised and lowered.

[Explanation of symbols]

 DESCRIPTION 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 Basket frame 8 Plunger rail 9 Guide rail 12 Pulley 20 Work floor 24 Work table

Continuation of front page (72) Inventor Atsushi Asae 1-6-6 Kandanishikicho, Chiyoda-ku, Tokyo Within Hitachi Building System Service Co., Ltd. (56) References JP-A-2-204292 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) B66B 7/00, 7/02, 9/04

Claims (1)

(57) [Claims] 1. A hydraulic jack erected in a hoistway,
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, according to the operation of the hydraulic jack. In the method of installing a hydraulic elevator in which the car frame is moved up and down via the rope to install equipment in the hoistway, first, a work floor is provided on an upper part of the hoistway, and the centering is installed on the work floor. On the basis of the piano wire drooped from the template for use, a pair of guide rails are centered and erected at the lower part of the hoistway, and a car frame that engages with these guide rails, and an upper part of the car frame. Assembling the work table to be attached, and then erected a lower jack, which constitutes one of the hydraulic jacks and has a built-in lower plunger, below the hoistway, Next, a lifting device at the upper part of the hoistway with the upper jack constituting the other of the hydraulic jacks and incorporating the upper plunger wound around a pulley provided at the upper end of the upper plunger. Then, these upper and lower jacks are connected by using a connection hire. Thereafter, one end of the main rope is attached to the hoistway side, the other end is attached to the car frame side, and the plunger rail and the remaining guide rail are lifted. Temporarily fixed, then, the hydraulic jack and the hydraulic power unit are connected via an oil feed pipe, and the hydraulic jack is operated to raise and lower the car frame via the main rope. A method of installing a hydraulic elevator, comprising performing installation work of equipment in the hoistway from a table.