Elevator hoist support device

Abstract

To provide an elevator hoisting machine support device which is less likely to cause the hoisting machine to be soaked in water even when rain water or river water penetrates into a hoistway of a building.SOLUTION: In order to solve the aforementioned problem, an elevator hoisting machine support device of the present invention drives a rope that suspends a cage vertically movable along a hoistway and a counterweight that is balanced with the cage, a hoisting machine that moves the cage and the counterweight vertically and is connected to a sheave is supported, via a rod, on a pit base installed on the bottom of the hoistway, and a raising base is installed above the rod and the hoisting machine is supported via at least the raising base.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an elevator hoist support device, and more particularly 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 a hoistway. [Background technology]

[0002] In order to increase the utilization efficiency of buildings, there is an elevator that utilizes the space within the elevator shaft to install a hoist, control panel, etc., and is composed of a car that moves up and down within 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 within the elevator shaft a certain distance above the bottom end of the shaft and parallel to one of the walls within the horizontal cross section of the elevator shaft.

[0003] As a support for the hoist, Patent Document 1 describes a system in which the hoist is supported via a rod on a pit base located at the bottom of the hoistway, while Patent Document 2 describes a system in which the hoist is supported via a raising platform on a pit base located at the bottom of the hoistway.

[0004] That is, in order to obtain an elevator hoist support device that is inexpensive, easy to install, and can also 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 the counterweight, a rope that suspends the car and the counterweight, a hoist that is located in the hoistway and a certain distance above the bottom end of the hoistway and is arranged 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 using an upper frame, a lower frame, and side frames, one end of each of the upper frame and the lower frame is movably fixed to the guide rail, and the lower frame is fixed to a pit base by a tension rod.

[0005] On the other hand, Patent Document 2 describes an elevator hoist fixing device that can support the horizontal load applied to the hoist with a simple configuration without increasing the strength of the guide rail by directly acting the horizontal load applied to the hoist on the rail bracket, and 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. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2006-52076 A [Patent Document 2] JP 2013-67492 A Summary of the Invention [Problem to be solved by the invention]

[0007] 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 flowing out when a river's levee breaks will enter the hoistway inside the building in which the elevator is installed, and the hoisting machine, which is supported by a rod on a pit base installed at the bottom of the hoistway, will be submerged in the infiltrated water, which needs to be prevented.

[0008] 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 a pit base via a rod or a raised platform, they do not describe any measures to protect the hoist from flooding in the event that rainwater from heavy rain or river water enters the elevator shaft and floods the elevator shaft.

[0009] The present invention has been made in consideration of the above-mentioned points, and an object of the present invention is to provide an elevator hoist support device that reduces the possibility of the hoist being submerged in water even if rainwater, river water, etc. gets into the elevator shaft inside a building. [Means for solving the problem]

[0010] 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 at least via the lifting platform. At the same time, 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 lifting platform is composed of a plurality of vertical frames extending vertically within the hoistway, an upper beam connected to the upper end of the vertical frame and connected to an end of the second rod opposite to the side connected to the hoist, a lower beam connected to the lower end of the vertical frame and connected to an end of the rod opposite to the side connected to the pit base, a horizontal frame connecting the plurality of vertical frames, and a fixing bracket fixing the plurality of vertical frames to a guide rail along which the counterweight is guided. It is characterized by being Effect of the Invention

[0011] According to the present invention, even if rainwater, river water, etc. gets into the elevator shaft inside the building, the possibility of the hoisting machine being submerged in water can be reduced. [Brief description of the drawings]

[0012] [Figure 1] 1 is a diagram showing the overall configuration of an elevator in which a first embodiment of an elevator hoist support device of the present invention is used. [Diagram 2] FIG. 1 is a front view showing a first embodiment of an elevator hoist support device according to the present invention. [Diagram 3]FIG. 3 is a detailed view of FIG. 2. [Figure 4(a)] 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 the first embodiment of the elevator hoist support device of the present invention. FIG. [Figure 4(b)] FIG. 4(a) is a side view. [Figure 5(a)] 1 is a diagram showing the connection portion of the dividing portion between the vertical frame of the raising platform and the middle vertical frame of the raising platform in the first embodiment of the elevator hoist support device of the present invention. [Figure 5(b)] FIG. 5(a) is a side view of FIG. [Figure 6(a)] 1 is a diagram showing the connection portion between the lower beam of the lifting platform and the lower vertical frame of the lifting platform in the elevator hoist support device according to the first embodiment of the present invention. FIG. [Figure 6(b)] FIG. 6(b) is a side view of FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] Hereinafter, an elevator hoist support device of the present invention will be described based on the illustrated embodiment. In each drawing, the same reference numerals are used for the same components. EXAMPLES

[0014] FIG. 1 shows the overall configuration of an elevator in which a first embodiment of an elevator hoist support device according to the present invention is used.

[0015] In Fig. 1, reference numeral 1 denotes a car that ascends and descends in a hoistway 2, and this car 1 is guided by a car guide rail 3. Reference numeral 4 denotes a counterweight that moves in a direction opposite to the car 1, and this counterweight 4 is guided by counterweight guide rails 5a and 5b. Reference numeral 6 denotes a top suspension beam fixed to the tops of the car guide rail 3 and the counterweight guide rails 5a and 5b, and pulleys 7 and 8 are provided on this top suspension beam 6. Reference numeral 9 denotes a thin hoisting machine arranged approximately parallel to one wall surface in the horizontal cross section of the hoistway 2, and this hoisting machine 9 is provided with a sheave 10.

[0016] Reference numeral 11 denotes a mounting frame for fixing the sheave 10 of the hoisting machine 9, and 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 substantially square shape. One ends of the upper frame 12 and the lower frame 13 are movably fixed to the counterweight guide rail 5a by fixing clips (not shown).

[0017] 17a and 17b are lower rods that constitute the hoisting machine support device 100 that supports the hoisting machine 9 on a pit base 18 installed at the bottom of the elevator shaft 2 via a mounting frame 11 that fixes the sheave 10 of the hoisting machine 9, and these 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.

[0018] Reference numeral 20 denotes a pulley provided below the car 1, and 21 denotes a rope whose end is fixed by a rope end fixing device 22. This rope 21 is wound around the pulley 20, pulley 7, sheave 10, pulley 8, and pulley 23 provided on the upper part of the counterweight 4, and moves with the rotation of the sheave 10 driven by the hoist 9, thereby raising and lowering the car 1 and the counterweight 4. Reference numeral 25 denotes the top floor of the building, and 26 denotes the bottom floor of the building.

[0019] 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).

[0020] Figure 2 is a front view of the hoisting machine support device 100 of this embodiment, Figure 3 is a detailed view of Figure 2, Figure 4(a) is a diagram showing the connection portion between the upper beam 27 of the lifting table and the upper vertical frame 32 of the lifting table in the hoisting machine 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 portion of the division between the upper vertical frame 32 of the lifting table and the middle vertical frame 33 of the lifting table in the hoisting machine 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 portion between the lower beam 28 of the lifting table and the lower vertical frame 34 of the lifting table in the hoisting machine support device 100 of this embodiment, and Figure 6(b) is a side view of Figure 6(a).

[0021] 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, 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, is installed above the lower rods 17a and 17b, and the hoist 9 is supported via this lifting platform 50.

[0022] Specifically, upper rods 29a and 29b, which are second rods, are connected to the upper part of the lifting platform 50, and the hoisting machine 9 is supported on the lifting platform 50 via the upper rods 29a and 29b. The lifting platform 50 is made up of a lifting platform upper vertical frame 32, a lifting platform middle vertical frame 33, and a lifting platform lower vertical frame 34, which extend vertically in the hoistway 2, a lifting platform upper beam 27 connected to the upper end of the lifting platform upper vertical frame 32 and connected to the end of the upper rods 29a and 29b on the opposite side to the side connected to the hoisting machine 9, and a lifting platform lower vertical frame 34. The raised platform is composed of a lower beam 28 connected to the end of the raised platform, which is connected to the end opposite the end of the lower rods 17a and 17b connected to the pit base 18, horizontal frames 40a, 40b, 40c, 40d which connect the upper vertical frames 32 of the raised platform, the middle vertical frames 33 of the raised platform, and the lower vertical frames 34 of the raised platform, and raised platform fixing brackets 30, 31, 35, 36 which fix each of the upper vertical frames 32 of the raised platform, the middle vertical frames 33 of the raised platform, and the lower vertical frames 34 of the raised platform to the counterweight guide rail 5a.

[0023] In addition, 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 having an L-shaped cross section is installed at the upper end of the upper vertical frame 32 of the raising platform, and 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 upper beam 27 of the horizontal U-shaped cross section with a portion of the first reinforcing member 32a having an L-shaped cross section located at the upper end of the upper vertical frame 32 of the raising platform, and connecting the overlapped portion with a vertical frame connecting bolt 37.

[0024] On the other hand, as shown in Figures 6(a) and 6(b), a first reinforcing member 34b having an L-shaped cross section is installed at the lower end of the lower vertical frame 34 of the raising platform, and the lower end of the lower vertical frame 34 of the raising platform and the lower beam 28 of the raising platform are connected by overlapping one end of the horizontal U-shaped cross section of the lower beam 28 of the raising platform with the portion of the first reinforcing member 34b having an L-shaped cross section located at the lower end of the lower vertical frame 34 of the raising platform, and connecting the overlapped portion with a vertical frame connecting bolt 39.

[0025] The first reinforcing member 32a having an L-shaped cross section is fixed to the upper end of the upper vertical frame 32 of the raising table by welding, and the first reinforcing member 34b having an L-shaped cross section is fixed to the lower end of the lower vertical frame 34 of the raising table by welding.

[0026] Furthermore, as shown in Figures 5(a) and 5(b), second reinforcing members 32b, 33a having an L-shaped cross section are installed at each end of the divided portions of the upper vertical frame 32 of the raising platform and the vertical frame 33 in the raising platform, and the divided portions of the upper vertical frame 32 of the raising platform and the vertical frame 33 in the raising platform are connected to each other by overlapping the portions of the second reinforcing members 32b, 33a arranged at each end of the divided portions of the upper vertical frame 32 of the raising platform and the vertical frame 33 in the raising platform located at the ends of the divided portions of the upper vertical frame 32 of the raising platform and the vertical frame 33 in the raising platform, and connecting the overlapped portions with a vertical frame connecting bolt 38.

[0027] In addition, the second reinforcing member 32b having an L-shaped cross section is fixed by welding to the end of the divided portion of the upper vertical frame 32 of the raising table, and the second reinforcing member 33a having an L-shaped cross section is fixed by welding to the end of the divided portion of the middle vertical frame 33 of the raising table.

[0028] Also, 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 similar to the connection described above.

[0029] As shown in Figures 2, 4(a), and 4(b), 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.

[0030] 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 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 fourth mounting bolts 47 and 49.

[0031] Also, as shown in Figures 4(a) and 4(b), a first plate-shaped member 52 is interposed between the lower end of the raising platform upper beam 27, which has a horizontal U-shaped cross section, and the upper end of the raising platform upper vertical frame 32, and this first plate-shaped member 52 is fixed between the lower end of the raising platform upper beam 27, which has a horizontal U-shaped cross section, and the upper end of the raising platform upper vertical frame 32 by a vertical frame connecting bolt 37, and is fixed to the lower end of the raising platform upper beam 27, which has a horizontal U-shaped cross section, by second mounting bolts 43 and 45.

[0032] On the other hand, as shown in Figures 6(a) and 6(b), a second plate-shaped member 53 is interposed between the upper end of the lower beam 28 of the raising platform, which has a horizontal U-shaped cross-section, and the lower end of the lower vertical frame 34 of the raising platform, and this second plate-shaped member 53 is fixed between the upper end of the lower beam 28 of the raising platform, which has a horizontal U-shaped cross-section, and the lower end of the lower vertical frame 34 of the raising platform by a vertical frame connecting bolt 39, and is fixed to the upper end of the lower beam 28 of the raising platform, which has a horizontal U-shaped cross-section, by fourth mounting bolts 47 and 49.

[0033] In addition, reference numeral 54 denotes a first fixing bracket that fixes the upper part of the mounting frame 11 that fixes the sheave 10 of the hoisting machine 9 to the guide rail 5a for the counterweight, and reference numeral 55 denotes a second fixing bracket that fixes the lower part of the mounting frame 11 that fixes the sheave 10 of the hoisting machine 9 to the guide rail 5a for the counterweight.

[0034] By adopting the configuration of this embodiment, i.e., by providing a lifting platform 50 on the lower beam 28 of the lifting platform installed above the lower rods 17a and 17b, and supporting the hoisting machine 9 via upper rods 29a and 29b provided on the upper beam 27 of the lifting platform installed above this lifting platform 50, the hoisting machine 9 can be supported at a much higher position than in the conventional configuration in which the hoisting machine 9 is simply supported on the pit base 18 via the lower rods 17a and 17b. Even if a large amount of rainwater due to heavy rain or river water flowing out due to the collapse of a river's levee enters the elevator shaft 2, the possibility of the hoisting machine 9 being submerged in water is extremely low.

[0035] In addition, since the raising platform 50 is divided into multiple parts (in this embodiment, it is divided into three parts: the upper vertical frame 32 of the raising platform, the middle vertical frame 33 of the raising platform, and the lower vertical frame 34 of the raising platform), it has the advantage that the raising platform 50 can be easily transported into the elevator shaft 2 during assembly.

[0036] In the above-described embodiment, the hoisting machine 9 is supported via upper rods 29a and 29b provided on the raising platform upper beam 27 installed above the raising platform 50. However, although not specifically shown, the hoisting machine 9 may be installed on the raising platform upper beam 27 installed above the raising platform 50 without using the upper rods 29a and 29b, and the hoisting machine 9 may be directly supported by the raising platform upper beam 27.

[0037] 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.

[0038] The present invention is not limited to the above-described embodiments, and includes various modified examples. For example, the above-described embodiments have been described in detail to clearly explain the present invention, and the present invention is not necessarily limited to those including all of the configurations described. In addition, it is possible to replace a 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. In addition, it is possible to add, delete, or replace a part of the configuration of each embodiment with another configuration. [Explanation of symbols]

[0039] 1 ... car, 2 ... elevator, 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...upper vertical frame of raising platform, 32a, 34b...first reinforcing member, 32b, 33a...second reinforcing member, 33...middle vertical frame of raising platform, 34...lower vertical frame of raising platform, 37, 38, 39...vertical frame connecting bolts, 40a, 40b, 40c, 40d...horizontal frame of raising platform, 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

1. 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.

2. 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.

3. 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.

4. 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.

5. 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.

6. 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.

7. 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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