Machine stand structure, machine stand installation method, and elevator

Abstract

To provide a machine base structure and the like capable of facilitating renewal construction and reducing manufacturing costs of the construction.SOLUTION: A machine base structure includes a first landing side floating base and a second landing side floating base including a portion overlapping with a skeleton wall for supporting a floor wall of a machine room and extending in an approximately vertical direction, a first machine base supporting column fixed to top surfaces of the first and second landing side floating bases and extending in an approximately X direction, first and second beam parts which are located further apart from a landing than the first machine base supporting column in a Y direction while being fixed to a side wall part of a building and arranged to be spaced from each other in the X direction, a second machine base supporting column indirectly fixed to top surfaces of the first and second beam parts through first and second structures and extending in the approximately X direction, a first machine base fixed to top surfaces of the first and second machine base supporting columns and extending in the approximately Y direction, and a second machine base fixed to the top surfaces of the first and second machine base support columns to extend in the approximately Y direction and facing the first machine base in the X direction to be spaced from each other.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present disclosure relates to a machine table structure, a machine table installation method, and an elevator. [Background technology]

[0002] Conventionally, there is an elevator, as described in Patent Document 1, which has a machine room above a pit and the hoisting machine is supported on a machine base installed on the floor of the machine room. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2011-46481 Summary of the Invention [Problem to be solved by the invention]

[0004] Machine stands made to comply with the old Building Standards Act may not be strong enough under the current Building Standards Act. Since the Building Standards Act is not retroactive, machine stands that are not strong enough under the current Building Standards Act do not necessarily need to be renovated to comply with the current Building Standards Act. However, there are cases where we are asked to renovate such machine stands to comply with the current Building Standards Act.

[0005] In this context, there are cases where a part of the existing machine stand is embedded and fixed in the wall of the machine room. In such cases, it is necessary to demolish the wall of the machine room, remove the existing machine stand, install a new machine stand that complies with the current Building Standards Act, and then restore the demolished wall of the machine room, which can make renovation work very difficult.

[0006] Therefore, an object of the present disclosure is to provide a machine base structure, a machine base installation method, and an elevator that can easily perform renewal construction and can easily reduce the manufacturing costs of the construction. [Means for solving the problem]

[0007] In order to solve the above problems, the machine table structure of the present disclosure is a machine table structure that is newly installed in an area including a machine room of an elevator in which an existing machine table is installed, and includes a first landing side float and a second landing side float that extend in a substantially vertical direction including a portion that overlaps with a body wall that supports the floor wall of the machine room when viewed from above in the vertical direction and are arranged at an interval from each other in a first direction that is substantially parallel to the width direction of the car, a first machine table support column that has a first end fixed to the upper surface of the first landing side float and a second end fixed to the upper surface of the second landing side float and extends in the substantially first direction, and a second end that forms part of a building in which the elevator is installed or is fixed to a side wall of the building and is located in front of the first machine table support column in a second direction that is substantially parallel to the depth direction of the car, the first machine bed is provided with: a first beam portion and a second beam portion that are located at a position away from the landing and are arranged at a distance from each other in the first direction; a second machine bed support pillar that extends approximately in the first direction and has a third end that is fixed directly to an upper surface of the first beam portion or indirectly fixed via a first structure, and a fourth end that is fixed directly to an upper surface of the second beam portion or indirectly fixed via a second structure; a first machine bed that extends approximately in the second direction and has a fifth end that is fixed to an upper surface of the first machine bed support pillar and a sixth end that is fixed to an upper surface of the second machine bed support pillar; and a second machine bed that extends approximately in the second direction and faces the first machine bed at a distance from the first machine bed.

[0008] The skeleton walls supporting the floor walls of the machine room can support a large vertical load, and the first and second beams that form part of the building in which the elevator is installed or are fixed to the side walls of the building can also support a large vertical load. Against this background, according to the present disclosure, the first and second machine bed support columns that support the first and second machine beds are supported by the skeleton walls and the first and second beams. Therefore, new first and second machine beds can be reliably and stably supported by the first and second machine bed support columns without being embedded and fixed to the side walls of the machine room. Therefore, the new first and second machine beds can be reliably and stably fixed without destroying the first and second machine beds, facilitating renewal construction and reducing the manufacturing costs of the construction.

[0009] Furthermore, the third end of the second machine platform support column may be indirectly fixed to the upper surface of the first beam portion via the first structure, and the fourth end of the second machine platform support column may be indirectly fixed to the upper surface of the second beam portion via the second structure, the first structure may include a rear float support column having a ninth end fixed to the upper surface of the first beam portion and a tenth end fixed to the upper surface of the second beam portion, extending approximately in the first direction, and a first rear float fixed to the upper surface of the rear float support column and extending in an approximately vertical direction, and the second structure may include the rear float support column and a second rear float fixed to the upper surface of the rear float support column and extending in an approximately vertical direction, and arranged at a distance from the first rear float in the first direction.

[0010] According to this configuration, by adjusting the heights of the first landing side float, the second landing side float, the first rear side float, and the second rear side float, the first and second machine stands can be installed at the desired height so as not to interfere with the first and second old machine stands.

[0011] The first beam portion and the second beam portion may be located vertically above a floor wall of the machine room.

[0012] According to this configuration, the new first and second machine stands can be installed without providing through holes in the floor wall of the machine room.

[0013] Furthermore, the first beam portion, the second beam portion, and the rear float support column may be located vertically lower than the floor wall of the machinery room, the floor wall of the machinery room may have a first through hole and a second through hole spaced apart in the first direction and extending approximately vertically, the first rear float may include a first storage portion accommodated in the first through hole, the upper end of the first rear float may be located within the machinery room, and the second rear float may include a second storage portion accommodated in the second through hole, and the upper end of the second rear float may be located within the machinery room.

[0014] Generally, the width of the machine room in the first direction is longer than the width of the elevator shaft in the first direction. Also, the steel materials that make up the rear floating platform support columns, such as H-beams, I-beams, and channel steel, must be larger in size to ensure strength as their length increases.

[0015] In this context, with this configuration, the length in the first direction of the rear float support column, which is installed so as to span the first beam section and the second beam section, can be made shorter than when it is installed inside the machinery room. This allows the rear float support column to be configured compactly, and also reduces the material cost of the rear float support column.

[0016] The first beam portion and the second beam portion may be fixed to a wall portion of the building with fastening members so as to protrude horizontally from the wall surface of the building.

[0017] According to this configuration, the first beam portion and the second beam portion can be installed at desired locations.

[0018] In addition, the first beam portion and the second beam portion may be architectural beams that form part of the building, and the second machine base support column may be fixed to the building using the existing architectural beams that existed before the first machine base and the second machine base were installed.

[0019] According to this configuration, the first and second machine stands can be installed using existing architectural beams that are installed in a building to ensure the building's strength. Therefore, since there is no need to install new first and second beams, the first and second machine stands can be installed significantly more easily and at lower cost using architectural beams that have excellent vertical load resistance.

[0020] The elevator of the present disclosure also includes the machine base structure of the present disclosure and a hoisting machine supported by the first machine base and the second machine base.

[0021] According to the elevator of the present disclosure, renewal construction can be easily carried out, and the manufacturing costs of the construction can be easily reduced.

[0022] The machine platform installation method of the present disclosure is a machine platform installation method for installing a new machine platform in the machine room of an elevator in which a machine platform is already installed, and includes the steps of installing a first landing-side float and a second landing-side float that extend in a substantially vertical direction including a portion that overlaps with a body wall that supports the floor wall of the machine room when viewed from above in the vertical direction, and are arranged at intervals from each other in a first direction that is substantially parallel to the width direction of the car; installing a first machine platform support column that is fixed to the upper surface of the first landing-side float and the upper surface of the second landing-side float and extends in substantially the first direction; and installing a second machine platform support column that extends in a second direction that is substantially parallel to the depth direction of the car. the step of installing a second machine bed support pillar that is located farther from the landing than the first machine bed support pillar, is supported by a first beam portion and a second beam portion that are spaced apart from each other in the first direction, and extends approximately in the first direction; the step of installing a first machine bed that is fixed to an upper surface of the first machine bed support pillar and an upper surface of the second machine bed support pillar, and extends approximately in the second direction; and the step of installing a second machine bed that is fixed to an upper surface of the first machine bed support pillar and an upper surface of the second machine bed support pillar, is spaced apart from the first machine bed in the first direction, and extends approximately in the second direction.

[0023] According to the machine stand installation method of the present disclosure, renewal construction can be easily carried out and the manufacturing costs of the construction can be easily reduced.

[0024] The first beam portion and the second beam portion are positioned vertically below the floor wall of the machine room, and a rear float support pillar positioned vertically below the floor wall of the machine room and extending substantially in the first direction is installed on the upper surface of the first beam portion and the upper surface of the second beam portion; a first through hole and a second through hole are positioned at an interval in the first direction and extend substantially in the vertical direction in the floor wall of the machine room; and a part of a first rear float extending substantially in the vertical direction is disposed in the first through hole, and a support pillar is installed under the first rear float. The method may include the steps of fixing an end of the first rear float to the upper surface of the rear float support pillar, placing a portion of the first rear float within the first through hole and fixing the lower end of the first rear float to the upper surface of the rear float support pillar, placing a portion of a second rear float extending approximately vertically within the second through hole and fixing the lower end of the second rear float to the upper surface of the rear float support pillar, and fixing the second machine table support pillar to the upper surface of the first rear float and the upper surface of the second rear float.

[0025] According to this configuration, the rear floating platform support column can be made compact, and the material cost of the rear floating platform support column can be reduced. [Effects of the Invention]

[0026] According to the present disclosure, renewal construction can be easily carried out and the manufacturing costs of the construction can be easily reduced. [Brief explanation of the drawings]

[0027] [Figure 1] FIG. 1 is a plan view of an elevator machine room according to an embodiment of the present disclosure, viewed from above in the vertical direction. [Figure 2] This is a plan view of the peripheral area of ​​the machine table structure of the above elevator when viewed from above in the Z direction. [Figure 3] FIG. 3 is a cross-sectional view taken along line A-A in FIG. 2. [Figure 4] FIG. 3 is a cross-sectional view taken along line BB in FIG. 2. [Figure 5] FIG. 4 is a cross-sectional view corresponding to FIG. 3 of a machine base structure according to a modified example. DETAILED DESCRIPTION OF THE INVENTION

[0028] Embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. It is anticipated that, when multiple embodiments and variations are included below, new embodiments can be constructed by appropriately combining their characteristic features. In the following examples, identical components are denoted by the same reference numerals in the drawings, and redundant descriptions will be omitted. The drawings include schematic diagrams, and the dimensional ratios of the length, width, height, and other dimensions of each component do not necessarily match between different drawings. Among the components described below, components not recited in the independent claims that represent the highest concept are optional components and not essential components. In this specification, the term "approximately" is used in the same sense as "roughly speaking," and the requirement of "approximately" is met if a person appears roughly like a circle. For example, the requirement of "approximately circular" is met if a person appears roughly circular. In the following description and drawings, the X direction is the first direction, which coincides with the width direction of the elevator car (not shown) and the width direction of the hoistway 2. The Y direction is a second direction and corresponds to the depth direction of the cage. The Z direction is the height direction of the cage and corresponds to the vertical direction. The X direction, Y direction, and Z direction are perpendicular to each other.

[0029] Fig. 1 is a plan view of a machine room 5 of an elevator 1 according to an embodiment of the present disclosure, viewed from above in the vertical direction. As shown in Fig. 1, the elevator 1 includes an old machine bed structure 10, a new machine bed structure (hereinafter simply referred to as the machine bed structure) 20, a hoisting machine 25, and a control panel 50. The machine bed structure 20 includes first and second new machine beds (hereinafter simply referred to as the machine beds) 21, 26, and the hoisting machine 25 is installed on the first and second machine beds 21, 26.

[0030] The elevator 1's machine room 5 includes a first chamber 5a that overlaps the hoistway 2 in the height direction and a second chamber 5b that overlaps the landing 3. The hoistway 25 is located closer to the hoistway 2 in the Y direction than the wall 3a on the hoistway 2 side of the landing 3, and the control panel 50 is located closer to the landing 3 in the Y direction than the wall 3a. The old machine base structure 10 is composed of a first old machine base 11 and a second old machine base 16, and the old machine bases 11, 16 extend approximately in the Y direction with a gap in the X direction. Each of the old machine bases 11, 16 is made of steel, such as a U-shaped channel steel, I-beam, or H-beam, and the end of each of the old machine bases 11, 16 opposite the landing 3 in the Y direction is embedded and fixed in a wall 6 on the far side of the hoistway 2 in the Y direction. The wall 6 is made of, for example, a non-combustible wall material.

[0031] The machine bed structure 20 is newly installed in an area including the machine room 5 of the elevator 1 where the existing old machine beds 11, 16 are installed. FIG. 2 is a plan view of the surrounding area of ​​the machine bed structure 20 as seen from above in the Z direction, FIG. 3 is a cross-sectional view taken along line A-A in FIG. 2, and FIG. 4 is a cross-sectional view taken along line BB in FIG. 2. As shown in FIG. 2, the machine bed structure 20 has first and second machine beds 21, 26 that are spaced apart in the X direction, and each of the machine beds 21, 26 extends approximately in the Y direction. The first and second old machine beds 11, 16 are each located in an area sandwiched between the first and second machine beds 21, 26 in the X direction, and are spaced apart in the X direction from the first and second machine beds 21, 26.

[0032] 2 to 4, the machine bed structure 20 includes a first landing-side floating platform 30, a second landing-side floating platform 32, a first machine bed support column 35, a first beam 36, a second beam 37, a rear-side floating platform support column 38, a first rear-side floating platform 40, a second rear-side floating platform 42, and a second machine bed support column 45. In this embodiment, the first landing-side floating platform 30, the second landing-side floating platform 32, the first machine bed support column 35, the rear-side floating platform support column 38, the first rear-side floating platform 40, the second rear-side floating platform 42, and the second machine bed support column 45 are each made of H-beams made of SS400 steel.

[0033] However, one or more of the first landing-side floating platform 30, the second landing-side floating platform 32, the first machine platform support column 35, the rear side floating platform support column 38, the first rear side floating platform 40, the second rear side floating platform 42, and the second machine platform support column 45 may be made of I-beam or channel steel made of SS400 steel. Also, one or more of the first landing-side floating platform 30, the second landing-side floating platform 32, the first machine platform support column 35, the rear side floating platform support column 38, the first rear side floating platform 40, the second rear side floating platform 42, and the second machine platform support column 45 may be made of a steel material other than SS400 steel that has excellent strength, such as SS490 steel or SS540 steel.

[0034] As shown in Fig. 2, the first landing-side pontoon 30 and the second landing-side pontoon 32 are disposed at an interval from each other in the X direction. As shown in Fig. 3, the first landing-side pontoon 30 and the second landing-side pontoon 32 are each fixed to the floor wall 7 of the machine room 5 by fixing means such as bolts, welded joints, or the like. The first landing-side pontoon 30 and the second landing-side pontoon 32 each include a portion that overlaps with the frame wall 8 that supports the floor wall 7 of the machine room 5 when viewed from above in the vertical direction, and in the present embodiment, the entire first landing-side pontoon 30 and the second landing-side pontoon 32 each overlaps with the frame wall 8 that supports the floor wall 7 of the machine room 5 when viewed from above in the vertical direction. The frame wall 8 is a wall that extends in a substantially vertical direction and supports the bottom surface of the floor wall 7.

[0035] The first machine platform support column 35 is fixed to the upper surfaces of the first and second landing-side floats 30, 32. More specifically, the first machine platform support column 35 has a first end 35a fixed to the upper surface of the first landing-side float 30 by bolts, welding, or the like, and a second end 35b fixed to the upper surface of the second landing-side float 32, and extends substantially in the X direction. The first and second beam portions 36, 37 are located farther from the landing 3 in the Y direction than the first machine platform support column 35, and are spaced apart from each other in the X direction. The first and second beam portions 36, 37 are also located below the floor wall 7 of the machine room 5.

[0036] The first beam 36 is fixed by fastening means such as anchor bolts to a side wall 51a extending substantially parallel to the YZ plane within the side wall 51 that defines the hoistway 2 and is located below the floor wall 7 in the building 80 in which the elevator 1 is installed. The second beam 37 is fixed by fastening means such as anchor bolts to a side wall 51b extending substantially parallel to the YZ plane within the side wall 51 and facing the side wall 51a in the X direction at a distance.

[0037] The rear buoy support column 38 is fixed to the upper surfaces of the first and second beam sections 36, 37. More specifically, the rear buoy support column 38 has a ninth end 38a fixed to the upper surface of the first beam section 36 by a fixing means such as a high-strength bolt or welding, and a tenth end 38b fixed to the upper surface of the second beam section 37 by a fixing means such as a high-strength bolt or welding, and extends substantially in the X direction. The first rear buoy 40 is fixed to the upper surface of the rear buoy support column 38 by a fixing means such as an anchor bolt or welding, and extends substantially in the Z direction from the upper surface of the rear buoy support column 38. The second rear buoy 42 is fixed to the upper surface of the rear buoy support column 38 by a fixing means such as an anchor bolt or welding, and extends substantially in the Z direction from the upper surface of the rear buoy support column 38.

[0038] As shown in FIG. 4 , the floor wall 7 of the machinery room 5 has a first through hole 60 and a second through hole 61 that are spaced apart in the X direction and extend substantially vertically. The first rear float 40 includes a first storage section 40a that is accommodated in the first through hole 60, and the upper end 40b of the first rear float 40 is located within the machinery room 5. The second rear float 42 includes a second storage section 42a that is accommodated in the second through hole 61, and the upper end 42b of the second rear float 42 is located within the machinery room 5. The first through hole 60 and the second through hole 61 are each formed, for example, by chipping the floor wall 7. The first rear float 40 is substantially identical to the second rear float 42 and faces the second rear float 42 in the X direction at a distance. The upper surface of the first rear floating platform 40 and the upper surface of the second rear floating platform 42 are located at approximately the same height within the machine room 5.

[0039] The second machine platform support column 45 is installed on the first and second rear floats 40, 42. More specifically, the second machine platform support column 45 has a third end 45a fixed to the upper surface of the first rear float 40 by a fixing means such as a bolt or welding, and a fourth end 45b fixed to the upper surface of the second rear float 42 by a fixing means such as a bolt or welding, and extends substantially in the X direction.

[0040] 2, the first machine bed 21 is installed on the upper surfaces of the first and second machine bed support columns 35, 45. In detail, the first machine bed 21 has a fifth end 21a fixed to the upper surface of the first machine bed support column 35 by a fixing means such as a bolt or welding, and a sixth end 21b fixed to the upper surface of the second machine bed support column 45 by a fixing means such as a bolt or welding, and extends substantially in the Y direction.

[0041] The second machine bed 26 is installed on the upper surfaces of the first and second machine bed support columns 35, 45. More specifically, the first machine bed 26 has a seventh end 26a fixed to the upper surface of the second machine bed support column 45 by a fixing means such as a bolt or welding, and an eighth end 26b fixed to the upper surface of the second machine bed support column 45 by a fixing means such as a bolt or welding, and extends substantially in the second direction. The second machine bed 26 faces the first machine bed 21 at a distance in the first direction.

[0042] The first and second machine stands 21, 26 are located further outward in the X direction than the first and second old machine stands 11, 16, and in the plan view shown in Fig. 2, the first and second old machine stands 11, 16 are present in the space defined by the first and second machine stands 21, 26. However, the first and second machine stands 21, 26 may be located further inward in the X direction than the first and second old machine stands 11, 16, and the first and second machine stands 21, 26 may be present in a position that overlaps the first and second old machine stands 11, 16 when viewed from the height direction.

[0043] 4, the first and second rear floats 40, 42 are positioned outward in the X direction and spaced apart from the first and second old machine stands 11, 16. However, the first and second rear floats 40, 42 may also be positioned so as to come into contact with the first and second old machine stands 11, 16.

[0044] As described above, the machine platform structure 20 is newly installed in an area including the machine room 5 of the elevator 1 where the existing old machine platforms 11, 16 are installed. The machine platform structure 20 includes a first platform-side buoy 30 and a second platform-side buoy 32, which include portions that overlap with the frame wall supporting the floor wall 7 of the machine room 5 when viewed from above in the vertical direction. The first platform-side buoy 30 and the second platform-side buoy 32 are arranged at an interval from each other in the X direction (a first direction substantially parallel to the width direction of the car), and each of the first platform-side buoy 30 and the second platform-side buoy 32 extends substantially vertically. The machine platform structure 20 also includes a first machine platform support column 35 that extends substantially in the X direction and has a first end 35a fixed to the upper surface of the first platform-side buoy 30 and a second end 35b fixed to the upper surface of the second platform-side buoy 32. The machine base structure 20 also includes a first beam 36 and a second beam 37 fixed to side walls 51a, 51b of the building 80 in which the elevator 1 is installed. The first beam 36 and the second beam 37 are arranged at an interval in the X direction. Each of the first beam 36 and the second beam 37 is located farther from the landing 3 than the first machine base support column 35 in the Y direction (a second direction substantially parallel to the depth direction of the car).

[0045] The machine bed structure 20 also includes a second machine bed support column 45 extending approximately in the X direction, having a third end 45a indirectly fixed to the upper surface of the first beam portion 36 via a first structure 65 (see FIG. 4) and a fourth end 45b indirectly fixed to the upper surface of the second beam portion 37 via a second structure 70 (see FIG. 4). The machine bed structure 20 also includes a first machine bed 21 extending approximately in the Y direction, having a fifth end 21a fixed to the upper surface of the first machine bed support column 35 and a sixth end 21b fixed to the upper surface of the second machine bed support column 45. The machine bed structure 20 also includes a second machine bed 26 extending approximately in the Y direction, having a seventh end 26a fixed to the upper surface of the first machine bed support column 35 and an eighth end 26b fixed to the upper surface of the second machine bed support column 45. The first machine bed 21 and the second machine bed 26 face each other in the X direction with a gap between them.

[0046] The skeleton wall 8 supporting the floor wall 7 of the machine room 5 can support a large vertical load, and the first and second beams 36, 37 fixed to the side walls 51a, 51b of the building 80 in which the elevator 1 is installed can also support a large vertical load. In light of this background, according to the present disclosure, the first and second machine bed support columns 35, 45 supporting the first and second machine beds 21, 26 are supported by the skeleton wall 8 and the first and second beams 36, 37. Therefore, the new first and second machine beds 21, 26 can be reliably and stably supported by the first and second machine bed support columns 35, 45 without being embedded and fixed to the side walls 51a, 51b of the machine room 5. Therefore, the new first and second machine beds 21, 26 can be reliably and stably fixed without destroying the wall 6 of the machine room 5, facilitating renewal construction and reducing the manufacturing costs of the construction.

[0047] The first structure 65 may also have a rear buoy support column 38 and a first rear buoy 40. The rear buoy support column 38 may have a ninth end 38a fixed to the upper surface of the first beam portion 36 and a tenth end 38b fixed to the upper surface of the second beam portion 37, and may extend substantially in the X direction. The first rear buoy 40 may be fixed to the upper surface of the rear buoy support column 38 and extend substantially vertically. The second structure 70 may also have the rear buoy support column 38 and a second rear buoy 42. The second rear buoy 42 may be fixed to the upper surface of the rear buoy support column 38 and extend substantially vertically. The second rear buoy 42 may be disposed at a distance from the first rear buoy 40 in the X direction.

[0048] According to this configuration, by adjusting the heights of the first landing side float 30, the second landing side float 32, the first rear side float 40, and the second rear side float 42, the first and second machine stands 21, 26 can be installed at the desired height so as not to interfere with the first and second old machine stands 11, 16.

[0049] Furthermore, the first beam portion 36, the second beam portion 37, and the rear buoy support column 38 may be located vertically lower than the floor wall 7 of the machinery room 5. Furthermore, the floor wall 7 of the machinery room 5 may have a first through hole 60 and a second through hole 61 located at an interval in the X direction and extending in a substantially vertical direction. Furthermore, the first rear buoy 40 may include a first storage portion 40a housed in the first through hole 60, and the upper end portion 40b of the first rear buoy 40 may be located within the machinery room 5. Furthermore, the second rear buoy 42 may include a second storage portion 42a housed in the second through hole 61, and the upper end portion 42b of the second rear buoy 42 may be located within the machinery room 5.

[0050] In general, the width t1 in the X direction of the machine room 5 (see FIG. 1) is often longer than the width t2 in the X direction of the elevator shaft 2 (see FIG. 1). It is also known that the steel material that makes up the rear floating platform support column 38, such as H-beams, I-beams, channel steel, etc., must be made larger in size as its length increases in order to ensure strength.

[0051] According to this configuration, the length in the X direction of the rear floating platform support column 38, which is installed so as to span the first beam portion 36 and the second beam portion 37, can be made shorter than when it is installed inside the machine room 5. Therefore, the rear floating platform support column 38 can be made compact, and moreover, the material cost of the rear floating platform support column 38 can be reduced.

[0052] Furthermore, the first beam portion 36 and the second beam portion 37 may be fixed to the side wall portions 51a, 51b of the building 80 with fastening members, for example, anchor bolts, so as to protrude horizontally from the wall surface of the building 80.

[0053] According to this configuration, the first beam portion 36 and the second beam portion 37 can be installed at desired locations.

[0054] The elevator of the present disclosure also includes a machine base structure 20, and a hoist 25 supported by a first machine base 21 and a second machine base 26. According to the elevator 1 of the present disclosure, renewal construction can be easily performed, and the manufacturing costs of the construction can be easily reduced.

[0055] Furthermore, the installation method for machine tables 21, 26 of the present disclosure is a method for installing new machine tables 21, 26 in the machine room 5 of an elevator 1 in which an old machine table 11, 16 is already installed. The installation method includes the step of installing a first landing-side levitation platform 40 and a second landing-side levitation platform 42 that extend in a substantially vertical direction including a portion that overlaps with the frame wall 8 that supports the floor wall 7 of the machine room 5 when viewed from above in the vertical direction and that are spaced apart from each other in the X direction. The installation method also includes the step of installing a first machine table support column 35 that is fixed to the upper surface of the first landing-side levitation platform 40 and the upper surface of the second landing-side levitation platform 42 and that extends in a substantially X direction. The installation method also includes the step of installing a second machine bed support column 45 that is located farther from the landing 3 in the Y direction than the first machine bed support column 35, is supported by a first beam portion 36 and a second beam portion 37 that are arranged at an interval in the X direction, and extends approximately in the X direction. The installation method also includes the step of installing a first machine bed 21 that is fixed to an upper surface of the first machine bed support column 35 and an upper surface of the second machine bed support column 45, and extends approximately in the Y direction. The installation method also includes the step of installing a second machine bed 26 that is fixed to an upper surface of the first machine bed support column 35 and an upper surface of the second machine bed support column 45, is arranged at an interval in the X direction from the first machine bed 21, and extends approximately in the Y direction.

[0056] According to the installation method of the machine bases 21, 26 of the present disclosure, renewal construction can be easily carried out, and the manufacturing costs of the construction can be easily reduced.

[0057] Furthermore, in the installation method for the machine stands 21, 26 of the present disclosure, the first beam portion 36 and the second beam portion 37 may be located vertically lower than the floor wall 7 of the machine room 5. The installation method of the present disclosure may also include a step of installing a rear buoy support column 38, which is located vertically lower than the floor wall 7 of the machine room 5 and extends substantially in the X direction, on the upper surfaces of the first beam portion 36 and the second beam portion 37. The installation method of the present disclosure may also include a step of providing a first through hole 60 and a second through hole 61, which are located at an interval in the X direction and extend substantially vertically, in the floor wall 7 of the machine room 5. The installation method of the present disclosure may also include a step of arranging a portion of a first rear buoy 40 extending substantially vertically within the first through hole 60 and fixing a lower end portion of the first rear buoy 40 to the upper surface of the rear buoy support column 38. The installation method of the present disclosure may also include a step of arranging a portion of the second rear float 42, which extends in a substantially vertical direction, within the second through-hole 61, and fixing the lower end of the second rear float 42 to the upper surface of the rear float support column 38. The installation method of the present disclosure may also include a step of fixing the second machine base support column 45 to the upper surface of the first rear float 40 and the upper surface of the second rear float 42.

[0058] According to this configuration, the rear floating platform support column 38 can be configured compactly, and the material cost of the rear floating platform support column 38 can be reduced.

[0059] The present disclosure is not limited to the above-described embodiment and its modifications, and various improvements and modifications are possible within the scope of the claims of the present application and their equivalents.

[0060] For example, in the above embodiment, the first beam portion 36 and the second beam portion 37 are located vertically below the floor wall 7 of the machine room 5. However, in the machine stand structure of the present disclosure, the first beam portion and the second beam portion may be located vertically above the floor wall of the machine room. With this configuration, new first and second machine stands can be installed without providing through holes in the floor wall of the machine room.

[0061] Also, the second machine bed support column 45 has a third end 45a indirectly fixed to the upper surface of the first beam 36 via the first structure 65, and a fourth end 45b indirectly fixed to the upper surface of the second beam 37 via the second structure 70, and extends substantially in the X direction. However, when the first and second beams are located inside a machine room, the second machine bed support column may have a third end directly fixed to the upper surface of the first beam, and a fourth end directly fixed to the upper surface of the second beam, and extend substantially in the X direction. With this configuration, the machine bed structure can be made significantly more compact, and the number of steps required for fabrication and manufacturing costs can be significantly reduced.

[0062] 5, that is, a cross-sectional view of a modified machine table structure 120 corresponding to FIG. 3, the first and second beams (not shown) of the machine table structure 120 may be architectural beams 136 that form part of the building 180. The second machine table support column 45 may be fixed to the building 180 by utilizing the existing architectural beams 136 that exist before the first machine table 21 and the second machine table are installed.

[0063] According to this configuration, the first and second machine stands 21 can be installed using the existing architectural beams 136 that are installed in the building 180 to ensure the strength of the building 180. Therefore, since there is no need to install new first and second beam portions, the first and second machine stands 21 can be installed significantly more easily and at low cost using the architectural beams 136 that have excellent vertical load resistance performance. [Explanation of symbols]

[0064] 1 elevator, 2 hoistway, 3 landing, 3a wall, 5 machine room, 5a first room, 5b second room, 6 wall, 7 floor wall, 8 body wall, 10 old machine base structure, 11 second old machine base, 16 second old machine base, 20,120 machine base structure, 21 first machine base, 21a fifth end, 21b sixth end, 25 hoist, 26 second machine base, 26a seventh end, 26b eighth end, 30 first landing side floating platform, 32 second landing side floating platform, 35 first machine base support column, 35a first end, 35b second end, 36 first beam, 37 second beam, 38 rear side floating platform support column, 38a Ninth end, 38b tenth end, 40 first rear floating platform, 40a first storage section, 40b upper end, 42 second rear floating platform, 42a second storage section, 42b upper end, 45 second machine base support column, 45a third end, 45b fourth end, 50 control panel, 51 side wall, 51a, 51b side wall section, 60 first through hole, 61 second through hole, 65 first structure, 70 second structure, 80, 180 building, 136 architectural beam.

Claims

1. A machine table structure to be newly installed in an area including a machine room of an elevator where an existing machine table is installed, a first landing-side float and a second landing-side float extending in a substantially vertical direction including a portion that overlaps with a body wall that supports the floor wall of the machine room when viewed from above in the vertical direction, and arranged at an interval from each other in a first direction that is substantially parallel to the width direction of the car; a first machine platform support pillar extending generally in the first direction and having a first end fixed to an upper surface of the first platform side pontoon and a second end fixed to an upper surface of the second platform side pontoon; a first beam portion and a second beam portion that constitute a part of a building in which the elevator is installed or are fixed to a side wall portion of the building, that are located farther from the landing than the first machine platform support column in a second direction that is substantially parallel to the depth direction of the car, and that are spaced apart from each other in the first direction; a second machine base support column extending generally in the first direction, the second machine base support column having a third end portion directly fixed to an upper surface of the first beam portion or indirectly fixed via a first structure, and a fourth end portion directly fixed to an upper surface of the second beam portion or indirectly fixed via a second structure; a first machine mount extending generally in the second direction and having a fifth end fixed to an upper surface of the first machine mount support column and a sixth end fixed to an upper surface of the second machine mount support column; a second machine mount having a seventh end fixed to an upper surface of the first machine mount support column and an eighth end fixed to an upper surface of the second machine mount support column, extending substantially in the second direction, and facing the first machine mount in the first direction with a gap therebetween; the third end of the second machine base support column is indirectly fixed to the upper surface of the first beam portion via the first structure, and the fourth end of the second machine base support column is indirectly fixed to the upper surface of the second beam portion via the second structure, the first structure includes a rear pontoon support pillar having a ninth end fixed to an upper surface of the first beam portion and a tenth end fixed to an upper surface of the second beam portion, and extending substantially in the first direction; and a first rear pontoon fixed to an upper surface of the rear pontoon support pillar and extending substantially in a vertical direction, The second structure includes the rear float support pillar, and a second rear float fixed to the upper surface of the rear float support pillar, extending in an approximately vertical direction, and arranged at a distance from the first rear float in the first direction.

2. The machine bed structure according to claim 1 , wherein the first beam portion and the second beam portion are located vertically above a floor wall of the machine room.

3. the first beam portion, the second beam portion, and the rear floating platform support column are located vertically below the floor wall of the machine room, a floor wall of the machine room having a first through hole and a second through hole spaced apart in the first direction and extending in a substantially vertical direction; the first rear float includes a first accommodation portion accommodated in the first through hole, and an upper end portion of the first rear float is located within the machinery chamber; The machine platform structure according to claim 1 , wherein the second rear float includes a second housing portion housed in the second through hole, and an upper end of the second rear float is located within the machine chamber.

4. 4. The machine bed structure according to claim 1, wherein the first beam portion and the second beam portion are fixed to the wall portion of the building with fastening members so as to protrude horizontally from the wall surface of the building.

5. the first beam portion and the second beam portion are architectural beams that form part of the building, 5. The machine bed structure according to claim 1, wherein the second machine bed support column is fixed to the building by utilizing the existing architectural beam that exists before the first machine bed and the second machine bed are installed.

6. A machine bed structure according to any one of claims 1 to 4; a hoisting machine supported by the first machine bed and the second machine bed; Equipped with an elevator.

7. A machine table installation method for installing a new machine table in an elevator machine room where a machine table is already installed, a step of installing a first landing side float and a second landing side float that extend in a substantially vertical direction including a portion that overlaps with a frame wall that supports the floor wall of the machine room when viewed from above in the vertical direction, and that are spaced apart from each other in a first direction that is substantially parallel to the width direction of the car; Installing a first machine platform support pillar fixed to an upper surface of the first platform side pontoon and an upper surface of the second platform side pontoon and extending substantially in the first direction; a step of installing a second machine bed support pillar that is located at a position farther from the landing than the first machine bed support pillar in a second direction substantially parallel to the depth direction of the car, that is supported by a first beam portion and a second beam portion that are spaced apart from each other in the first direction, and that extends substantially in the first direction; installing a first machine mount fixed to an upper surface of the first machine mount support column and an upper surface of the second machine mount support column and extending generally in the second direction; and installing a second machine mount fixed to an upper surface of the first machine mount support column and an upper surface of the second machine mount support column, the second machine mount being spaced apart from the first machine mount in the first direction and extending generally in the second direction; the first beam portion and the second beam portion are located below the floor wall of the machine room in the vertical direction, a step of installing a rear float support column located vertically below a floor wall of the machine room and extending substantially in the first direction on an upper surface of the first beam portion and an upper surface of the second beam portion; providing a first through hole and a second through hole in a floor wall of the machine room, the first through hole and the second through hole being spaced apart in the first direction and extending in a substantially vertical direction; a step of disposing a portion of a first rear side floating platform extending in a substantially vertical direction within the first through hole and fixing a lower end of the first rear side floating platform to an upper surface of the rear side floating platform support column; disposing a portion of the first rear float within the first through hole and fixing a lower end of the first rear float to an upper surface of the rear float support column; a step of disposing a portion of a second rear side floating platform extending in a substantially vertical direction within the second through hole and fixing a lower end of the second rear side floating platform to an upper surface of the rear side floating platform support column; and fixing the second machine platform support column to an upper surface of the first rear float and an upper surface of the second rear float.

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