JP2774902B2 - Elevator counterweight 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 of installing a counterweight of an elevator in which a plurality of weights are held in a weight frame.
It relates to the law.

[0002]

2. Description of the Related Art FIG. 7 shows, for example, JP-A-61-257885.
FIG. 1 is a cross-sectional view of a hoistway of a conventional elevator shown in Japanese Unexamined Patent Application Publication No. H11-209,036. In the figure, 1 is a hoistway having an opening 2 for mounting a landing side door, 3 is a car arranged in the hoistway 1, 4 is provided along hoistway walls on both sides of the car 3, Pair of car rails to guide the elevator
Is a counterweight located behind the car 3 in the hoistway 1. The counterweight 5 and the car 3 are connected to a rope (not shown).
Through a hoisting machine (not shown). A pair of weight rails 6 are provided along the hoistway walls on both sides of the counterweight 5 and guide the counterweight 5 up and down.

FIG. 8 is a front view showing the counterweight 5 of FIG. In the drawing, reference numeral 7 denotes a weight frame in which a plurality of weights 8 are placed. The weight frame 7 is composed of left and right vertical frames 7a, upper horizontal frames 7b, and lower horizontal frames 7c each having a U-shaped cross section. ing. Reference numeral 9 denotes a guide shoe which is attached to the upper, lower, left and right sides of the weight frame 7 and is engaged with the weight rail 6. The counterweight 5 includes the weight frame 7, the weight 8 and the guide shoe 9. .

[0004] Reference numeral 10 denotes a shock absorber base, which is disposed at a lower end of the car rail 6 and to which a shock absorber (not shown) is attached.
Reference numeral 1 denotes a receiving stand which is placed on the shock absorber base 10 and used when assembling the counterweight 5.

Next, a method of installing the counterweight 5 in the conventional elevator as described above will be described. First,
As shown in FIG. 9, the scaffold 1 is located in the pit 1a of the hoistway 1.
2 is assembled, and the lowermost weight rail 6 is fixed to the hoistway wall to complete the centering.
From the opening 2 into the hoistway 1. Next, the loaded weight frame 7 is lifted by the lifting device 13, disposed between the weight rails 6, and the guide shoes 9 are attached to the upper, lower, left, and right sides of the weight frame 7. In addition, the cradle 11 is set so as to be in a position where it is easy to work, the weight 8 placed on the floor is lifted by human power, and the required amount is put into the weight frame 7 across the scaffold 12. Thereafter, the scaffold 12 is dismantled and another installation work is performed.

[0006]

In the conventional method of installing the counterweight 5 as described above, the heavy weight 8 must be transported across an unstable scaffold, and the weight 8 must be There is a risk that hands or the like may be pinched when the product is loaded into the container, and there is a problem that workability and safety are low. There is also a problem that a large amount of temporary materials such as the scaffold 12 are required.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and can perform installation work safely and efficiently, and can temporarily mount a weight in a hoistway. and to obtain the installation how the elevator counterweight can be omitted materials.

[0008]

The method of installation elevator counterweight according to the invention of claim 1 Means for Solving the Problems] is Ru put a plurality of weight in the hoistway outside of the weight frame having a hanger step, the weight frame
Press the weight in the weight frame with the holding bracket attached to
The lifting frame is attached to the lifting bracket , and the lifting frame is attached to the lifting bracket.The weight frame with the weight is loaded into the hoistway, and set on the weight frame.
The weighted guide shoe is attached to the weight guide provided in the hoistway.
And a step of engaging with the tool .

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. Embodiment 1 FIG. FIG. 1 is a front view showing a counterweight of an elevator according to one embodiment of the present invention, and FIG. 2 is a sectional view taken along the line II-II of FIG. 1, which is the same as or equivalent to FIGS. Are denoted by the same reference numerals, and description thereof is omitted.

In the figure, reference numeral 14 denotes a hanging bracket (hanging hand) attached to two upper horizontal frames 7b, and 15 is detachably mounted between left and right vertical frames 7a by bolts 16 to prevent deformation of the vertical frame 7a. Deformation prevention metal fittings 17 are fixed to the inside of the left and right vertical frames 7a by bolts 18 and are pressing metal fittings for pressing the stacked weights 8 against the lower horizontal frame 7c. The pressing metal fittings 17 are uppermost weights. 8 has an adjustment bolt 19 that comes into contact with it.

Next, a method for installing the above-described counterweight will be described. First, a required amount of the weight 8 is loaded in advance in the weight frame 7 at a factory or the like, the weight 8 is pressed by the holding metal 17, and the deformation preventing metal 15 and the guide shoe 9 are provided.
Is attached. Next, the counterweight assembled and unitized in advance as described above is carried into the installation site. Then, as shown in FIG. 3, the lying counterweight is lifted by the lifting device 13. At this time, a shackle is attached to a hole provided in the hanging metal fitting 14, and a slinging rope of the lifting device 13 is attached thereto.

The suspended counterweight is lowered from the ceiling of the machine room and the opening at the top of the hoistway between the weight rails whose centering has been completed, and is supported by the receiving table. Thereafter, the deformation preventing bracket 15 is removed if it interferes with other devices.

In the above-described method of installing the counterweight, since the weight 8 is previously loaded on the weight frame 7 outside the hoistway in a factory or the like, the safety and workability of the installation work are improved. Also, installation time on site is greatly reduced.
Further, a scaffold for working in the hoistway is not required.

Further, if the weight frame 7 is lifted with the weight 8 inserted therein as shown in FIG. 3, a large load acts on the vertical frame 7a. Is attached, the deformation of the vertical frame 7a is prevented.

Further, in the first embodiment, since the hanging metal fittings 14 are attached to the upper frame 7b, lifting of the counterweight is simplified. Further, since the holding metal 17 is used, the weight 8 does not come off even when the weight frame 7a is inclined, and the safety is further improved.

Embodiment 2 FIG. Next, FIG. 4 is a front view showing a counterweight of an elevator according to another embodiment of the present invention, and FIG. 5 is a front view showing a state in which the counterweight of FIG. 4 is being assembled. In the first embodiment, an example in which one or several weights 8 are stacked on the integrated weight frame 7 has been described. In the second embodiment, the left and right vertical frames 7a and the lower horizontal frame 7c are integrated, Upper end of vertical frame 7a and upper horizontal frame 7b
Are provided with screw holes 21 and 22, and the upper horizontal frame 7 b is detachably attached by bolts 23.

In this case, as shown in FIG. 5, a required amount of weight 8 is stacked, a vertical frame 7a and a lower horizontal frame 7c are integrated into this, and then an upper horizontal frame 7b is attached. As described above, since the weights 8 can be loaded at one time, it is possible to easily manufacture a counterweight in a factory or the like.

Embodiment 3 FIG. Note that the shape and number of the deformation preventing brackets are not limited to those in the first embodiment, and for example, as shown in FIG.
A deformation preventing metal fitting 24 having a U-shaped cross section may be arranged outside of “a” and may be detachably attached to the weight frame 7.

The guide shoe 9 may be attached after the counterweight is carried into the hoistway. further,
In the second embodiment, the upper horizontal frame 7b is detachable, but the lower horizontal frame 7c may be detachable.

[0020]

As described above, the method for installing a counterweight of an elevator according to the first aspect of the present invention is such that a plurality of weights are put in a weight frame having a hanging metal fitting, and then the lifting device is mounted on the hanging metal fitting. Since the weight frame with the weight attached and loaded is carried into the hoistway, the installation work can be performed safely and efficiently, the installation time can be reduced, and the inside of the hoistway can be reduced. In this case, it is possible to omit the provisional material for loading the weight.

[Brief description of the drawings]

FIG. 1 is a front view showing a counterweight of an elevator according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line II-II in FIG.

FIG. 3 is a side view showing a state in which the counterweight of FIG. 1 is carried into a hoistway.

FIG. 4 is a front view showing a counterweight of an elevator according to another embodiment of the present invention.

FIG. 5 is a front view showing a state in which the counterweight of FIG. 4 is being assembled.

FIG. 6 is a sectional view of a counterweight of an elevator according to still another embodiment of the present invention.

FIG. 7 is a sectional view showing an example of a hoistway of a conventional elevator.

FIG. 8 is a front view showing the counterweight of FIG. 7;

9 is a side view showing a state where the counterweight of FIG. 8 is carried into a hoistway.

[Description of Signs] 1 hoistway, 7 weight frame, 8 weight, 13 lifting device,
14 Suspension bracket, 15 Deformation prevention bracket, 17 Holder
Utensils.

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Takeshi Doi 2-6-1, Otemachi, Chiyoda-ku, Tokyo Mitsubishi Electric Building Techno Service Co., Ltd. (56) References JP-A-52-71043 (JP, A) JP-A-59-12062 (JP, A) JP-A-49-89852 (JP, U) JP-A-55-23341 (JP, U) JP-A-55-78672 (JP, U) JP-A-54-79662 (JP, U) Japanese Utility Model Showa 55-5093 (JP, U) (58) Field surveyed (Int. Cl. ⁶ , DB name) B66B 11/00 B66B 7/00

Claims (1)

(57) [Claims] 1. A hanging process the weight frame having a fitting Ru put multiple <br/> several weights in the hoistway outside, the retainer member attached to the weight frame, the weight frame
A lifting device is mounted on the hanging bracket, the weight frame in which the weight is placed is carried into the hoistway, and the guide shoe provided on the weight frame is lifted.
Step of engaging with a weight rail provided in the hoistway
A method of installing a counterweight of an elevator , comprising :