JPH0442300Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an elevator guide rail support device, and is particularly suitable for super high-rise elevators.

[Conventional technology]

A conventional elevator guide rail support device is constructed as shown in FIG. In other words, 1 in the figure
2 is concrete forming the hoistway of the elevator; 4 is a shock absorber stand installed in the pit 1a of the hoistway 1; a shock absorber 5 is attached thereon; Reference numeral 6 denotes a bracket for mounting the guide rail at the middle part of the hoistway 1; 8, a bracket for mounting the L-shaped guide rail at the lower end of the guide rail 7; 8a, a plate fixed to the bottom of the bracket 8; The bottom of the bracket 8
The thickness is such that it does not come into contact with the bends of the Reference numeral 9 denotes a spring-type sliding clip for supporting the guide rail 7 on the brackets 6 and 8. If a force exceeding a predetermined level is applied to the guide rail 7 in the vertical direction, slipping will occur between the guide rail 7 and the clip 9. It is starting to occur.

However, with such conventional equipment, thermal shrinkage of the building's steel frame, shrinkage due to the creep phenomenon of concrete, drying shrinkage, or installation of air conditioning inside the building,
If displacement between floors or uneven settling of the foundation occurs due to increased weight due to the installation of furniture fixtures, etc., the lower part of the guide rail 7 itself rests on the shock absorber stand 4, so the sliding clips 9 may be damaged. A very large vertical force acts on the guide rail 7 due to the frictional force, and especially in the case of an elevator guide rail in a skyscraper, the guide rail 7 may be bent or the bracket 6 may be bent as shown in Fig. 3. There was a risk that it might become deformed.

According to calculations, the total frictional force of the sliding clips 9 is proportional to the number of clips, and the greater the number of clips, the more the buckling stress of the guide rail 7 is far exceeded. This causes curvature or deformation of the bracket 6, and this curvature of the guide rail 7 and deformation of the bracket 6 occur not only between the floors where the inter-story displacement has occurred, but also on the floor where the inter-story displacement has locally occurred and the floor below it. , the elevator cannot run safely and is extremely dangerous. Furthermore, once such curvature and deformation occurs, a great deal of effort and expense will be required for restoration.

For this purpose, for example, as proposed in Japanese Patent Application Laid-Open No. 52-112939, the bolt 20 is screwed into the fixing base 4' arranged directly below the lowest end of the guide rail 7, as shown in FIG. A device is described in which a gap 21 is always provided between the bolt 20 and the lowermost end of the guide rail 7 in this manner.

[Problem that the invention attempts to solve]

It is true that with the device shown in Figure 6, a gap can be provided just below the bottom end of the guide rail, so even if the building itself sinks after completion, the guide rail can be prevented from curving. Workability during rail installation cannot be said to be very good.

That is, since the area of the head portion of the bolt 20 is extremely small, it is unstable to place the guide rail 7 on and adjust the centering, and a separate guide rail support stand for installation is required.

The present invention was developed in view of the above points, and the purpose is to provide a guide rail support device that has a structure with good workability that can be fully utilized not only for supporting the guide rail after installation, but also during installation. do.

[Means for solving problems]

In the present invention, an L-shaped bracket having an upper side and a lower side is arranged with the upper side touching the back surface of the guide rail of the elevator, and the lower end of the guide rail creating a gap with the lower side of the bracket,
In a guide rail support device for vertically supporting the guide rail in a pit of a hoistway, an L-shaped base is arranged in the gap between the brackets so that one side touches the upper side of the bracket and extends downward, and the base is connected to the bracket. It is installed so that it can move freely in the vertical direction relative to the lower side of the holder.

[Effect]

With the above configuration, the weight of the guide rail can be stably supported by the base during installation, and after installation, the guide rail can be retreated to a position where it does not interfere with movement of the guide rail.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1, 4, and 5.

In the figure, the same reference numerals as in FIGS. 2 and 3 indicate the same parts, and 10 is a guide rail mounting bracket at the lower end of the guide rail 7 according to the present invention, for example, as in the conventional case, the lower side 10a and the upper side 10
It is an L-shaped member consisting of
a is fixed to the shock absorber stand 4 with bolts 11 and nuts 12, the upper side 10b is in contact with the back surface of the guide rail 7, and the lower end of the guide rail 7 is attached to the bracket 1.
0 so as to create a gap with the lower side 10a.
Then, in this gap, the upper side 10 of the bracket 10 is inserted.
Bolt 1 through the elongated hole provided vertically in b.
3, the L-shaped base 14 has one side touching the upper side 10b of the bracket 10 and extending downward.
The upper side 10b of the bracket 10 supports the guide rail 7 by a sliding clip 9, as in the conventional case. 15 is vertically inserted into a tap hole (not shown) provided on the other side of the base 14, and the head 1
This is a long bolt with a dimension 5a facing downward such that it contacts the lower side 10a of the bracket 10, and a nut 16 is screwed onto the tip of this bolt to fix the base 14.

Next, the procedure for installing a guide rail using the support device according to the present invention will be explained.

First, the base 1 is equipped with a bolt 15 and a nut 16 approximately in the center of the elongated hole on the upper side 10b of the bracket 10.
4 are connected in advance with bolts 13 so that one side is parallel to the lower side 10a, and then the lower side 1 of the bracket 10 is
0a on the shock absorber stand 4 with bolts 11 and nuts 12
Concluded. Then, turn the bolt 15 in the direction of the arrow in FIG. 1 until the head 15a of the bolt 15 contacts the lower side 10a of the bracket 10, and then tighten the nut 16 to temporarily fix the base 14.

Next, place the guide rail 7 on the base 14 and attach the bracket 10 using the sliding clip 9.
The brackets 6 and 6a are fastened to the upper side 10b of the guide rail 7, and the guide rail 7 is installed and centered in sequence, and the weight of the guide rail is shared and held by each bracket 6, 6a. When the installation of the guide rail 7 is completed, loosen the bolt 13 and nut 16, rotate the bolt 15 in the opposite direction to the arrow shown in FIG. 1, and lower the base 14 below the bottom surface of the guide rail 7. The base 14 is fixed to the upper side 10b of the bracket 10 with the bolt 13 at a position below a predetermined distance l (approximately 10 mm to 20 mm) as shown in FIG. 5, and the nut 16 is also tightened to hold the base 14.

With this configuration, even if the initial shrinkage after the building is completed is a large shrinkage due to the drying shrinkage and clipping shrinkage of the concrete, the guide rail itself can flexibly follow changes in the building. This prevents the guide rail from being bent or the rail bracket from deforming.

[Effect of idea]

As described above, according to the present invention, the bracket that supports the lower part of the guide rail of the elevator is provided with a base that is slidable in the vertical direction, so that the weight of the guide rail is kept extremely stable during the installation of the guide rail. Since the guide rail is supported in the same position, it is much easier to install and center the guide rail compared to conventional methods, and work efficiency is greatly improved. Therefore, even if a large force is applied to the guide rail, the guide rail will not bend and endanger the safety of the elevator. Furthermore, if this predetermined gap is constantly checked and adjusted during elevator service and maintenance, a guide rail support device that is always reliable can be obtained.

[Brief explanation of the drawing]

Fig. 1 is a structural diagram of a guide rail support device showing an embodiment of the present invention, Figs. 2 and 6 are structural diagrams of a conventional guide rail support device, and Fig. 3 explains the problems of the conventional technology. FIG. 4 is a sectional view taken along the line -- in FIG. 1, and FIG. 5 is an explanatory diagram for explaining an example of use of the device of the present invention. 1... Hoistway, 1a... Pit, 7... Guide rail, 6, 8, 10... Bracket, 9... Clip, 14... Base.

Claims (1)

[Claims for Utility Model Registration] (1) An L-shaped bracket having an upper side and a lower side, with the upper side touching the back surface of an elevator guide rail, and the lower end of the guide rail creating a gap with the lower side of the bracket. In the guide rail support device that supports the guide rail by erecting it in a pit of a hoistway, an L-shaped base is arranged in the gap of the bracket and extends downward with one side touching the upper side of the bracket. A guide rail support device for an elevator, characterized in that the base is mounted so as to be movable vertically relative to the lower side of the bracket. (2) The elevator according to claim 1 of the utility model registration claim, characterized in that a bolt is screwed onto the other side of the L-shaped base with the head facing downward and touching the lower side of the bracket. guide rail support device. (3) The guide rail for an elevator according to claim 1 of the utility model registration claim, characterized in that an elongated hole is provided in the upper side of the bracket in the vertical direction, and the base is movably attached through the elongated hole. Support device.