JP7633906B2 - Elevator hoist support device - Google Patents

Description

The present invention relates to an elevator hoist support device, and in particular to an elevator hoist support device suitable for an elevator in which the hoist is supported via a rod on a pit base installed at the bottom of the elevator shaft.

To increase the efficiency of building utilization, some elevators use the space in the elevator shaft to install a hoist, control panel, etc., and are made up of a car that moves up and down in the elevator shaft, a counterweight that moves in the opposite direction to the car, guide rails for the car and counterweight, ropes that suspend the car and counterweight, and a hoist that is located in the elevator shaft a certain distance above the bottom end of the elevator shaft and parallel to one of the walls in the horizontal cross section of the elevator shaft.

Patent document 1 describes a hoist supported via a rod on a pit base located at the bottom of the hoistway, while patent document 2 describes a hoist supported via a raised platform on a pit base located at the bottom of the hoistway.

That is, in order to obtain an elevator hoist support device that is inexpensive, easy to install, and can be adjusted, Patent Document 1 describes an elevator hoist support device that includes a car and counterweight that move up and down in a hoistway, guide rails for the car and counterweight, a rope that suspends the car and the counterweight, a hoist that is located in the hoistway a certain distance above the bottom end of the hoistway and parallel to one wall surface in the horizontal cross section of the hoistway, and a mounting frame that supports the hoist, in which the mounting frame is assembled in a U-shape with an upper frame, a lower frame, and side frames, one end of each of the upper frame and lower frame is movably fixed to the guide rail, and the lower frame is fixed to a pit base by a tension rod.

On the other hand, in Patent Document 2, in order to obtain an elevator hoist fixing device capable of supporting the horizontal load applied to the hoist with a simple configuration without increasing the strength of the guide rail by directly acting on the rail bracket with the horizontal direction of the load applied to the hoist, the device is described that includes a car that moves up and down in a hoistway having a wall, a counterweight that is arranged on one side of the hoistway within the vertical projection plane of the gap formed by the car and the wall on one side and moves up and down in the hoistway in balance with the car, a guide rail for the counterweight that is erected in the hoistway, a rail bracket to which this guide rail is connected and fixed to the wall on one side, a hoist that is also installed in the hoistway and arranged on the other side of the hoistway within the vertical projection plane of the gap, and a raising platform to which the hoist is connected and fixed and which positions the hoist at a predetermined height from the bottom of the hoistway.

JP 2006-52076 A JP 2013-67492 A

However, in recent years, there have been many natural disasters, and there is a risk that, for example, large amounts of rainwater from heavy rain or river water that flows out when a river's levee breaks will enter the elevator shaft inside the building in which the elevator is installed, and the hoisting machine that is supported by a rod on the pit base installed at the bottom of the elevator shaft may be submerged in the infiltrated water, which needs to be prevented.

However, while the elevator hoist support devices described in the above-mentioned Patent Documents 1 and 2 describe a structure in which the hoist is supported on the pit base via a rod or a raised platform, they do not describe any measures to prevent the hoist from becoming flooded in the event that rainwater from heavy rain or river water gets in and floods the elevator shaft.

The present invention has been made in consideration of the above points, and its purpose is to provide an elevator hoist support device that reduces the possibility of the hoist becoming submerged in water even if rainwater, river water, etc. gets into the elevator shaft inside the building.

In order to achieve the above object, the elevator hoist support device of the present invention is an elevator hoist support device that drives a rope that suspends a car that can move up and down along a hoistway and a counterweight that balances the car, and in which a hoist connected to a sheave that moves the car and the counterweight up and down is supported via a rod on a pit base installed at the bottom of the hoistway,
A lifting platform is installed above the rod, and the hoist is supported via at least the lifting platform. A second rod is connected to the upper part of the lifting platform, and the hoist is supported on the lifting platform via the second rod.
The raising platform is characterized in that it is composed of a plurality of vertical frames extending vertically within the elevator shaft, an upper beam connected to the upper ends of the vertical frames and to which the end of the second rod opposite the side connected to the hoist is connected, a lower beam connected to the lower ends of the vertical frames and to which the end of the rod opposite the side connected to the pit base is connected, a horizontal frame connecting the plurality of vertical frames together, and a fixing bracket fixing the plurality of vertical frames to a guide rail along which the counterweight is guided .

According to the present invention, even if rainwater, river water, etc. gets into the elevator shaft inside the building, the possibility of the hoist being submerged in water can be reduced.

1 is a diagram showing the overall configuration of an elevator in which a first embodiment of the elevator hoist support device of the present invention is used. 1 is a front view showing a first embodiment of an elevator hoist support device according to the present invention. FIG. FIG. 3 is a detailed view of FIG. 2. 1 is a diagram showing the connection portion between the upper beam of the lifting platform and the upper vertical frame of the lifting platform in embodiment 1 of the elevator hoist support device of the present invention. FIG. 4( a ) is a side view of FIG. 1 is a diagram showing the connection portion of the dividing portion between the vertical frame of the raising platform and the vertical frame of the raising platform in embodiment 1 of the elevator hoist support device of the present invention. FIG. 5( a ) is a side view of FIG. 1 is a diagram showing the connection portion between the lower beam of the lift platform and the lower vertical frame of the lift platform in embodiment 1 of the elevator hoist support device of the present invention. FIG. 6( a ) is a side view of FIG.

The elevator hoist support device of the present invention will be described below based on the illustrated embodiment. Note that the same reference numerals are used for the same components in each figure.

Figure 1 shows the overall configuration of an elevator in which the elevator hoist support device of the present invention is used.

In FIG. 1, 1 is a car that moves up and down in the elevator 2, and this car 1 is guided by the elevator car guide rail 3. 4 is a counterweight that moves in the opposite direction to the elevator car 1, and this counterweight 4 is guided by the counterweight guide rails 5a and 5b. 6 is a top suspension beam fixed to the top of the elevator car guide rail 3 and the counterweight guide rails 5a and 5b, and this top suspension beam 6 is provided with pulleys 7 and 8. 9 is a thin hoisting machine arranged approximately parallel to one wall surface in the horizontal cross section of the elevator 2, and this hoisting machine 9 is equipped with a sheave 10.

11 is a mounting frame that fixes the sheave 10 of the hoist 9. This mounting frame 11 is composed of an upper frame 12, a lower frame 13, and side frames 14 and 15, and is assembled in a roughly U-shape. One end of the upper frame 12 and the lower frame 13 are movably fixed to the counterweight guide rail 5a by a fixing clip (not shown).

17a and 17b are lower rods that constitute the hoisting machine support device 100, which supports the hoisting machine 9 on the pit base 18 installed at the bottom of the hoistway 2 via the mounting frame 11 that fixes the sheave 10 of the hoisting machine 9. The lower rods 17a and 17b are arranged on the extension line of the side frames 14 and 15 and below the load center point of the hoisting machine 9.

20 is a pulley installed below the car 1, 21 is a rope whose end is fixed by a rope end fixing device 22, this rope 21 is wound around pulley 20, pulley 7, sheave 10, pulley 8, and pulley 23 installed on the top of the counterweight 4, and moves with the rotation of sheave 10 driven by hoist 9, raising and lowering the car 1 and counterweight 4 up and down. 25 is the top floor of the building, and 26 is the bottom floor of the building.

Next, the specific configuration of the hoist support device 100 of this embodiment will be described with reference to Figures 2, 3, 4(a), 4(b), 5(a), 5(b), 6(a) and 6(b).

Figure 2 is a front view of the hoist support device 100 of this embodiment, Figure 3 is a detailed view of Figure 2, Figure 4(a) is a diagram showing the connection between the upper beam 27 of the lifting platform and the upper vertical frame 32 of the lifting platform in the hoist support device 100 of this embodiment, Figure 4(b) is a side view of Figure 4(a), Figure 5(a) is a diagram showing the connection between the divided part of the upper vertical frame 32 of the lifting platform and the middle vertical frame 33 of the lifting platform in the hoist support device 100 of this embodiment, Figure 5(b) is a side view of Figure 5(a), Figure 6(a) is a diagram showing the connection between the lower beam 28 of the lifting platform and the lower vertical frame 34 of the lifting platform in the hoist support device 100 of this embodiment, and Figure 6(b) is a side view of Figure 6(a).

As shown in Figures 2 and 3, the hoist support device 100 of this embodiment is characterized in that a lifting platform 50 divided into multiple parts is installed above the lower rods 17a and 17b, that is, in this embodiment, the lifting platform 50 divided into an upper vertical frame 32 of the lifting platform, a middle vertical frame 33 of the lifting platform, and a lower vertical frame 34 of the lifting platform, and the hoist 9 is supported via this lifting platform 50.

Specifically, the second rods, upper rods 29a and 29b, are connected to the top of the lifting platform 50, and the hoist 9 is supported on the lifting platform 50 via the upper rods 29a and 29b. The lifting platform 50 is made up of an upper vertical frame 32, a middle vertical frame 33, and a lower vertical frame 34 of the lifting platform, which extend vertically within the hoistway 2, an upper beam 27 of the lifting platform that is connected to the upper end of the upper vertical frame 32 and has the ends of the upper rods 29a and 29b opposite to the side connected to the hoist 9, and a lower vertical frame 34 of the lifting platform. It is composed of a lower beam 28 of the raising platform, which is connected to the end of the lower rods 17a and 17b opposite to the end connected to the pit base 18, horizontal frames 40a, 40b, 40c, and 40d of the raising platform that connect the upper vertical frames 32 of the raising platform, the middle vertical frames 33 of the raising platform, and the lower vertical frames 34 of the raising platform, and mounting brackets 30, 31, 35, and 36 that fix the upper vertical frames 32 of the raising platform, the middle vertical frames 33 of the raising platform, and the lower vertical frames 34 of the raising platform to the counterweight guide rail 5a.

The upper beam 27 and the lower beam 28 of the raising platform are formed with a horizontal U-shaped cross section, and as shown in Figures 4(a) and 4(b), a first reinforcing member 32a with an L-shaped cross section is installed at the upper end of the upper vertical frame 32 of the raising platform. The upper end of the upper vertical frame 32 of the raising platform and the upper beam 27 of the raising platform are connected by overlapping one end of the horizontal U-shaped cross section of the upper beam 27 of the raising platform with a part of the first reinforcing member 32a with an L-shaped cross section located at the upper end of the upper vertical frame 32 of the raising platform, and connecting the overlapped part with a vertical frame connecting bolt 37.

On the other hand, as shown in Figures 6(a) and 6(b), a first reinforcing member 34b with an L-shaped cross section is installed at the lower end of the lower vertical frame 34 of the platform, and the lower end of the lower vertical frame 34 of the platform and the lower beam 28 of the platform are connected by overlapping one end of the horizontal U-shaped cross section of the lower beam 28 of the platform with a part of the first reinforcing member 34b with an L-shaped cross section located at the lower end of the lower vertical frame 34 of the platform, and connecting the overlapped part with a vertical frame connecting bolt 39.

The first reinforcing member 32a, which has an L-shaped cross section, is fixed by welding to the upper end of the upper vertical frame 32 of the raising platform, and the first reinforcing member 34b, which has an L-shaped cross section, is fixed by welding to the lower end of the lower vertical frame 34 of the raising platform.

Also, as shown in Figures 5(a) and 5(b), second reinforcing members 32b and 33a with an L-shaped cross section are installed at each end of the divided parts of the upper vertical frame 32 of the raising platform and the middle vertical frame 33 of the raising platform, and the divided parts of the upper vertical frame 32 of the raising platform and the middle vertical frame 33 of the raising platform are connected to each other by overlapping the parts of the second reinforcing members 32b and 33a located at the ends of the divided parts of the upper vertical frame 32 of the raising platform and the middle vertical frame 33 of the raising platform, and connecting the overlapped parts with the vertical frame connecting bolts 38.

The second reinforcing member 32b, which has an L-shaped cross section, is fixed by welding to the end of the division of the upper vertical frame 32 of the raising platform, and the second reinforcing member 33a, which has an L-shaped cross section, is fixed by welding to the end of the division of the middle vertical frame 33 of the raising platform.

Although not specifically shown, the connection between the divided parts of the middle vertical frame 33 of the raising platform and the lower vertical frame 34 of the raising platform is also the same as the connection described above.

As shown in Figures 2, 4(a) and 4(b), the upper rods 29a and 29b have one end fixed to the lower frame 13 of the mounting frame 11 by first mounting bolts 42 and 44, and the other end passing through the upper end of the raising platform upper beam 27, which has a horizontal U-shaped cross section, and fixed to the lower end of the raising platform upper beam 27 by second mounting bolts 43 and 45.

On the other hand, as shown in Figures 2, 6(a) and 6(b), the lower rods 17a and 17b have one end fixed to the pit base 18 by the third mounting bolts 46 and 48, and the other end passing through the lower end of the raising platform lower beam 28, which has a horizontal U-shaped cross section, and fixed to the upper end of the raising platform lower beam 28 by the fourth mounting bolts 47 and 49.

Also, as shown in Figures 4(a) and 4(b), a first plate-like member 52 is interposed between the lower end of the horizontal U-shaped cross-section of the raising platform upper beam 27 and the upper end of the raising platform upper vertical frame 32, and this first plate-like member 52 is fixed between the lower end of the horizontal U-shaped cross-section of the raising platform upper beam 27 and the upper end of the raising platform upper vertical frame 32 by the vertical frame connecting bolt 37, and is fixed to the lower end of the horizontal U-shaped cross-section of the raising platform upper beam 27 by the second mounting bolts 43 and 45.

On the other hand, as shown in Figures 6(a) and 6(b), a second plate-like member 53 is interposed between the upper end of the horizontal U-shaped cross-section of the lower beam 28 of the raising platform and the lower end of the lower vertical frame 34 of the raising platform, and this second plate-like member 53 is fixed between the upper end of the horizontal U-shaped cross-section of the lower beam 28 of the raising platform and the lower end of the lower vertical frame 34 of the raising platform by the vertical frame connecting bolt 39, and is fixed to the upper end of the horizontal U-shaped cross-section of the lower beam 28 of the raising platform by the fourth mounting bolts 47 and 49.

The reference numeral 54 denotes a first fixed bracket that fixes the upper part of the mounting frame 11 that fixes the sheave 10 of the hoist 9 to the guide rail 5a for the counterweight, and the reference numeral 55 denotes a second fixed bracket that fixes the lower part of the mounting frame 11 that fixes the sheave 10 of the hoist 9 to the guide rail 5a for the counterweight.

In this embodiment, the lifting platform 50 is provided on the lifting platform lower beam 28 installed above the lower rods 17a and 17b, and the hoisting machine 9 is supported via the upper rods 29a and 29b on the lifting platform upper beam 27 installed above the lifting platform 50. Compared to the conventional configuration in which the hoisting machine 9 is only supported on the pit base 18 via the lower rods 17a and 17b, the hoisting machine 9 can be supported at a much higher position. Even if a large amount of rainwater caused by heavy rain or river water flowing out due to the collapse of a river embankment enters the elevator shaft 2, the possibility of the hoisting machine 9 becoming submerged in water is extremely low.

In addition, the lifting platform 50 is divided into several parts (in this embodiment, it is divided into three parts: the upper vertical frame 32 of the lifting platform, the middle vertical frame 33 of the lifting platform, and the lower vertical frame 34 of the lifting platform), which has the advantage that the lifting platform 50 can be easily transported into the elevator shaft 2 during assembly.

In the above-mentioned embodiment, the hoisting machine 9 is supported via the upper rods 29a and 29b provided on the upper beam 27 of the lifting platform installed above the lifting platform 50. However, although not shown, the hoisting machine 9 may be installed on the upper beam 27 of the lifting platform installed above the lifting platform 50 without using the upper rods 29a and 29b, and the hoisting machine 9 may be directly supported by the upper beam 27 of the lifting platform.

In this case, the configuration of the lifting platform 50, the connection configuration between the lifting platform 50 and the lifting platform upper beam 27 and the lifting platform lower beam 28, etc. are the same as those in the above-mentioned embodiment.

The present invention is not limited to the above-described embodiments, but includes various modifications. For example, the above-described embodiments have been described in detail to clearly explain the present invention, and are not necessarily limited to those having all of the configurations described. It is also possible to replace part of the configuration of one embodiment with the configuration of another embodiment, and it is also possible to add the configuration of another embodiment to the configuration of one embodiment. It is also possible to add, delete, or replace part of the configuration of each embodiment with other configurations.

1...car, 2...hoistway, 3...car guide rail, 4...counterweight, 5a, 5b...counterweight guide rail, 6...top lifting beam, 7, 8, 20, 23...pulley, 9...hoist, 10...sheave, 11...mounting frame, 12...upper frame of mounting frame, 13...lower frame of mounting frame, 14, 15...side frame of mounting frame, 17a, 17b...lower rod, 18...pit base, 21...rope, 22...rope end fixing device, 25...top floor of building, 26...bottom floor of building, 27...upper beam of raising platform, 28...lower beam of raising platform, 29a, 29b...upper rod, 30, 31, 35, 36...raising platform fixing bracket, 32...raising platform upper vertical frame, 32a, 34b...first reinforcing member, 32b, 33a...second reinforcing member, 33...raising platform middle vertical frame, 34...raising platform lower vertical frame, 37, 38, 39...vertical frame connecting bolt, 40a, 40b, 40c, 40d...raising platform horizontal frame, 42, 44...first mounting bolt, 43, 45...second mounting bolt, 46, 48...third mounting bolt, 47, 49...fourth mounting bolt, 50...raising platform, 52...first plate-shaped member, 53...second plate-shaped member, 54...first fixing bracket, 55...second fixing bracket, 100...hoisting machine support device.

Claims (7)

A hoisting machine support device for an elevator, which drives a rope that suspends a car that can move up and down along a hoistway and a counterweight that balances the car, and is connected to a sheave that moves the car and the counterweight up and down, is supported via a rod on a pit base installed at the bottom of the hoistway,
A lifting platform is installed above the rod, and the hoist is supported via at least the lifting platform;
A second rod is connected to an upper portion of the lifting platform, and the hoist is supported on the lifting platform via the second rod.
The elevator hoist support device is characterized in that the raising platform is composed of a plurality of vertical frames extending vertically within the hoistway, an upper beam connected to the upper ends of the vertical frames and to which the end of the second rod opposite the side connected to the hoist, a lower beam connected to the lower ends of the vertical frames and to which the end of the rod opposite the side connected to the pit base is connected, a horizontal frame connecting the multiple vertical frames together, and a fixing bracket fixing the multiple vertical frames to a guide rail along which the counterweight is guided . The elevator hoist support device according to claim 1 ,
The elevator hoist support device is characterized in that the raising platform is composed of a plurality of vertical frames extending vertically within the hoistway, an upper beam connected to the upper ends of the vertical frames and on which the hoist is installed, a lower beam connected to the lower ends of the vertical frames and to which the end of the rod opposite the side connected to the pit base is connected, a horizontal frame connecting the multiple vertical frames together, and a fixing bracket fixing the multiple vertical frames to a guide rail along which the counterweight is guided. The elevator hoist support device according to claim 1 or 2 ,
The upper beam and the lower beam are formed in a horizontal U-shaped cross section, and a first reinforcing member having an L-shaped cross section is installed at the upper and lower ends of the vertical frame,
an upper end of the vertical frame and the upper beam, and a lower end of the vertical frame and the lower beam are connected by overlapping one end of each of the upper beam and the lower beam, which have a horizontal U-shaped cross section, with a portion of the first reinforcing member located at the upper and lower ends of the vertical frame, and connecting the overlapped portions with connecting bolts. The elevator hoist support device according to claim 3 ,
An elevator hoist support device, characterized in that the first reinforcing member is fixed to each of the upper and lower ends of the vertical frame by welding. The elevator hoist support device according to claim 3 or 4 ,
An elevator hoist support device, characterized in that the vertical frame of the raising platform is divided into multiple parts. The elevator hoist support device according to claim 5 ,
an elevator hoist support device, characterized in that a second reinforcing member with an L-shaped cross section is installed at each end of the multiple divided vertical frame sections, and the multiple divided vertical frame sections are connected to each other by overlapping parts of the second reinforcing members located at the ends of the vertical frame sections and connecting the overlapped parts with connecting bolts. The elevator hoist support device according to claim 6 ,
An elevator hoist support device, characterized in that the second reinforcing member is fixed to each of the divided portions of the vertical frame by welding.

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