JP4499366B2 - Elevator hoist support structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a support structure for an elevator hoisting machine, and more specifically, a sufficient maintenance work space can be secured in the machine room while the floor area of the machine room is equal to or less than the area of the hoistway. The elevator hoisting machine support structure improved as described above.
[0002]
[Prior art]
Conventionally, as shown in FIG. 8, a machine room 2 is provided above a hoistway 1 where elevator elevators, counterweights and the like are raised and lowered, and a hoisting machine 3 and a control panel 4 are installed therein. ing.
Further, a car and a counterweight (not shown) are suspended in a fishing bottle shape by a main rope 5 wound around a traction sheave 3a rotated by the hoisting machine 3 and a deflecting sheave 3b disposed in the vicinity thereof. (See Patent Document 1).
[0003]
Further, the machine bed 6 on which the hoisting machine 3 is placed is supported on a machine beam 8 extending horizontally in the horizontal direction in the figure via a vibration isolating rubber 7.
Further, the machine beam 8 is supported on a pair of left and right building-side receiving beams 10 and 10 extending in a direction perpendicular to the paper surface shown in the figure via the raising machine beams 9 and 9. (See Patent Document 2).
[0004]
[Patent Document 1]
Japanese Patent Laid-Open No. 8-175767 (FIGS. 6 and 7)
[Patent Document 2]
JP 2002-234682 A (FIG. 1)
[0005]
[Problems to be solved by the invention]
By the way, according to the provisions of the Building Standard Law Enforcement Ordinance etc., the above-mentioned machine beam 8 must be supported by the building-side receiving beam 10 or the rising wall 11 and around the hoisting machine 3 and the control panel 4. A maintenance work space W having a width of 50 cm or more must be secured.
As a result, as shown in FIG. 8, the floor area of the machine room 2 needs to be larger than the area of the hoistway 1.
[0006]
On the other hand, in order to make the floor area of the machine room 2 equal to the area of the hoistway 1, a building-side receiving beam 12 is added directly above the hoistway 1 as shown in FIG. It is conceivable to shorten the overall length of the machine beam 8 by supporting the machine beam 8 with the building-side receiving beam 10 at the right end of the figure.
[0007]
However, in such a hoisting machine support structure, the side 5a for suspending the car and the side 5b for suspending the counterweight of the main rope 5 are both located between the building-side receiving beams 10 and 12. The overall length of the machine beam 8 cannot be sufficiently shortened, and it is difficult to secure a maintenance work space W having a specified size between the machine beam 8 and the control panel 4.
[0008]
Accordingly, an object of the present invention is to eliminate the above-described problems of the prior art, and to secure a sufficient maintenance work space inside the machine room while making the floor area of the machine room equal to or less than the area of the hoistway. An object of the present invention is to provide a support structure for an elevator hoisting machine.
[0009]
[Means for Solving the Problems]
The means according to claim 1, which solves the above problem,
A structure in which a machine beam is passed between a pair of left and right building-side receiving beams arranged at the top of an elevator hoistway, and the hoisting machine is supported on the elevator machine room by placing the hoisting machine on the machine beam. Because
One of the pair of left and right building-side receiving beams is a portion of a main rope wound around a traction sheave that is rotationally driven by the hoisting machine, and a portion that hangs down from the traction sheave toward the car and a counterweight It arrange | positions so that it may pass between the parts drooping to the side.
[0010]
That is, in the elevator hoisting machine support structure described in claim 1, since one of the pair of left and right building side receiving beams is disposed below the traction sheave, the interval between the pair of left and right building side receiving beams is reduced. Can do.
As a result, the overall length of the machine beam spanned between the pair of left and right building-side receiving beams can be shortened, so that the floor area of the machine room is equal to or less than the area of the hoistway, A large maintenance work space can be secured.
In particular, by placing one of the pair of left and right building-side receiving beams directly under the rotation shaft of the traction sheave, most of the weight of the hoist, the car, and the counterweight is supported by this one building-side receiving beam. be able to.
Accordingly, the cross-sectional dimension (model) of the other building-side receiving beam can be reduced, so that the floor area of the machine room can be further reduced.
[0011]
Further, the means described in claim 2 is the elevator hoisting machine support structure described in claim 1, wherein the other of the pair of left and right building-side receiving beams also includes the main rope from the traction sheave. It is characterized by being disposed so as to pass between a portion depending on the car side and a portion depending on the counterweight side.
[0012]
That is, in the elevator hoisting machine support structure described in claim 2, since both the pair of left and right building side receiving beams are arranged below the traction sheave, the distance between the pair of left and right building side receiving beams is greatly increased. It can be narrowed.
As a result, the overall length of the machine beam spanned between the pair of left and right building-side receiving beams can be greatly reduced, so that the floor area of the machine room can be further increased while ensuring the maintenance and inspection work space inside the machine room. Can be reduced.
[0013]
According to a third aspect of the present invention, there is provided the elevator hoisting machine supporting structure according to the first or second aspect, wherein the machine beam is restrained so that the machine beam does not float from the building-side receiving beam. It is characterized by having.
[0014]
That is, according to the elevator hoisting machine support structure described in claim 3, by using the restraining means, the machine beam can be prevented from being lifted from the building-side receiving beam, and the stability of the machine beam can be improved. .
More specifically, when one of the pair of left and right building side receiving beams is placed directly below the rotation shaft of the traction sheave, most of the weight of the hoisting machine, the car, and the counterweight is reduced. It will be supported by one building-side receiving beam, which may impair the stability of the machine beam.
At this time, for example, by using a connecting member as a restraining means for connecting the other building-side receiving beam and the machine beam in the vertical direction, the machine beam is prevented from rising from the building-side receiving beam, thereby stabilizing the machine beam. Can be increased.
A connecting member that connects the floor of the machine room and the machine beam in the vertical direction can also be used as the restraining means.
[0015]
According to a fourth aspect of the present invention, there is provided the elevator hoisting machine support structure according to the third aspect, wherein the restraining means includes a building beam disposed on a ceiling side of the machine room and the machine beam. It is the member extended in the up-down direction between.
[0016]
That is, in the elevator hoisting support structure described in claim 4, a member (restraint) that extends in the vertical direction like a stick or a stick beam between the building beam on the ceiling side of the machine room and the machine beam. The machine beam can be prevented from floating from the building side receiving beam.
It is preferable that the upper end of such a stick or stick beam is connected to the building beam and the lower end is connected to the machine beam.
[0017]
The means described in claim 5 is further characterized by further comprising reinforcing means for reinforcing the tip of the machine beam.
[0018]
That is, in the conventional hoisting machine support structure, since the end portion of the machine beam rests on the building-side receiving beam, vibration at the end portion of the machine beam has not been a problem.
On the other hand, in the hoisting machine support structure of the present invention, the end of the machine beam becomes a free end to dispose the building-side receiving beam below the traction sheave, and the machine beam is caused by vibration generated by the hoisting machine. There is a risk that the end of the will vibrate.
Therefore, in the elevator hoisting machine support structure described in claim 5, since the tip of the machine beam is reinforced by using the reinforcing means, the end of the machine beam does not vibrate and accompanies the operation of the hoisting machine. The level of vibration noise can be reduced.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, with reference to FIG. 1 thru | or FIG. 3, each embodiment of the support structure of the elevator hoisting machine which concerns on this invention is described in detail.
In the following description, the direction in which the rotation axis of the traction sheave extends is referred to as the front-rear direction, the direction in which the machine beam extends is referred to as the left-right direction, and the same portions are denoted by the same reference numerals and description thereof is omitted. To do.
[0020]
First Embodiment First, an elevator hoisting machine support structure 100 according to a first embodiment will be described with reference to FIG.
[0021]
As shown in FIG. 1, a machine room 2 having a floor area substantially equal to the area of the hoistway 1 is provided above the hoistway 1 where an elevator car, a counterweight, and the like are raised and lowered. A hoisting machine 3 and a control panel 4 are installed.
Further, a car and a counterweight (not shown) are suspended in a fishing bottle shape by a main rope 5 wound around a traction sheave 3a rotated by the hoisting machine 3 and a deflecting sheave 3b disposed in the vicinity thereof. ing.
[0022]
The machine bed 6 on which the hoisting machine 3 is placed is supported on a machine beam 22 that extends horizontally in the left-right direction via a pair of left and right anti-vibration rubbers 7.
The machine beam 22 is supported on a pair of left and right building-side receiving beams 21 and 10 extending in the front-rear direction via the raising machine beams 9 and 9 extending in the front-rear direction (perpendicular to the drawing sheet). ing.
The raising machine beams 9 and 9 are firmly connected to the lower surface of the machine beam 23 and the pair of left and right building-side receiving beams 21 and 10, respectively.
[0023]
The left-side building-side receiving beam 21 of the pair of left-right building-side receiving beams 21 and 10 is sandwiched in the left-right direction by the portion 5a of the main rope 5 that suspends the car and the portion 5b that suspends the counterweight. It arrange | positions so that it may extend in the front-back direction.
More specifically, the left building-side receiving beam 21 is disposed directly below the rotation shaft 3c of the traction sheave 3a.
Thereby, the space | interval of the left-right direction of a pair of left and right building side receiving beams 21 and 10 is considerably narrower than that of the conventional hoisting machine support structure shown in FIG.
[0024]
Accordingly, the machine beam 22 spanned between the pair of left and right building-side receiving beams 21 and 10 has a total length that is longer than that of the machine beam 8 in the conventional hoisting machine support structure shown in FIG. The end face 22a on the left side in the figure is flush with the end face 6a on the left side in the figure of the machine bed 6 in the vertical direction.
Therefore, the size of the work space W between the left end surface 22a of the machine beam 22 and the front surface of the control panel 4 is considerably larger than that of the conventional hoisting machine support structure shown in FIG. A working space of 50 cm or more as defined by
[0025]
That is, according to the elevator hoisting machine support structure 100 of the first embodiment, the maintenance / inspection work space inside the machine room 2 while the floor area of the machine room 2 is equal to or less than the area of the hoistway 1. W can be increased.
[0026]
Also, the building-side receiving beam 21 on the left side supports most of the weight of the hoisting machine 3, the car, and the counterweight by arranging the building-side receiving beam 21 on the left side of the traction sheave 3a. Can do.
At this time, the building-side receiving beam 21 on the left side is additionally installed on the top of the hoistway 1, and the dimensions such as the cross-sectional shape can be greatly increased.
On the other hand, since the load applied to the right side building-side receiving beam 10 is small and the cross-sectional dimension (model) can be reduced, the floor area of the machine room 2 can be further reduced.
[0027]
Second Embodiment Next, an elevator hoisting machine support structure according to a second embodiment will be described with reference to FIG.
[0028]
The elevator hoisting machine support structure 200 according to the second embodiment shown in FIG. 2 is a connecting member for restraining the right end 22b of the machine beam 22 from being lifted from the right building-side receiving beam 10 (see FIG. 2). It is different from the elevator hoisting machine support structure 100 of the first embodiment described above in that the restraining means 30 is provided.
[0029]
The connecting member 30 is a steel member bent in a substantially L shape, and the upper side of a portion 31 that extends vertically through the floor 2a of the machine room 2 is connected to the side surface or upper surface of the machine beam 22, and A portion 32 extending in the left-right direction is connected to the upper side of the I-shaped steel constituting the building-side receiving beam 10.
As a result, the right end 22b of the machine beam 22 cannot be lifted from the right building-side receiving beam 10.
[0030]
That is, in the elevator hoisting machine support structure 200 of the second embodiment, the left building-side receiving beam 21 is disposed directly below the rotating shaft 3c of the traction sheave 3a, so that the left side of the hoisting machine 3 Half is located on the left side of the left side building-side receiving beam 22.
However, since the right end 22b of the machine beam 22 is connected to the right building-side receiving beam 10 by the connecting member 30, the machine beam 22 does not float from the right building-side receiving beam 10, and the stability of the machine beam 22 is improved. Has been increased.
[0031]
Third Embodiment Next, a support structure for an elevator hoisting machine according to a third embodiment will be described with reference to FIG.
[0032]
The elevator hoisting machine support structure 300 of the third embodiment shown in FIG. 3 has the right end 22b of the machine beam 22 on the right side of the above-described elevator hoisting machine support structure 200 of the second embodiment. The form of the restraining means for restraining so that it does not float up from the building side receiving beam 10 is different.
[0033]
That is, the restraining means in the third embodiment is interposed between the building beam 41 disposed on the ceiling side of the machine room 2 and the end 22b on the right side of the machine beam 22 and straightened in the vertical direction. It is a stick or rod 40 that extends.
The connecting rod or the connecting beam 40 is a steel prism or shaped steel, and its upper end is connected to the building beam 41 and its lower end is connected to the machine beam 22.
As a result, the right end portion 22b of the machine beam 22 cannot be displaced upward.
[0034]
That is, according to the elevator hoisting machine support structure 300 of the third embodiment, it is possible to reliably prevent the machine beam 22 from being lifted from the building-side receiving beam 10 with an extremely simple structure.
[0035]
Fourth Embodiment Next, a support structure for an elevator hoisting machine according to a fourth embodiment will be described with reference to FIG.
[0036]
The elevator hoisting machine support structure 400 of the fourth embodiment shown in FIG. 4 reinforces the left end portion 22a of the machine beam 22 in the illustration with respect to the elevator hoisting machine support structure 100 of the first embodiment described above. The difference is that a reinforcing member 50 is provided.
[0037]
That is, in the elevator hoisting machine support structure 100 of the first embodiment, since the building-side receiving beam 21 is arranged below the traction sheave 3a, the left end of the machine beam 22 shown in the figure becomes a free end, and the hoisting machine 3 is generated. There is a possibility that the end of the machine beam 22 vibrates due to the vibration.
Therefore, in the elevator hoisting machine support structure 400 of the fourth embodiment, the raising machine beam 9L on the left side of the figure is firmly connected to the building side receiving beam 21 on the left side of the figure and integrated. The raising machine beam 9L and the left end of the machine beam 22 are firmly connected by a reinforcing member 50.
[0038]
The reinforcing member 50 is formed by welding flanges to two sides of a triangular thick steel plate, and welding these flanges to the lower surface of the left end of the machine beam 22 and the left side surface of the machine beam 9L for raising. is there.
Thereby, since the rigidity of the left end of the machine beam 22 can be increased, the left end of the machine beam 22 is prevented from vibrating due to the vibration generated by the hoisting machine 3, and the vibration noise level accompanying the operation of the hoisting machine 3 is prevented. Can be reduced.
[0039]
In the fourth embodiment, the left end of the machine beam 22 and the raising machine beam 9L are connected by the reinforcing member 50. However, the left end of the machine beam 22 is connected to the building-side receiving beam 21 or the machine room 2. It can also be connected to the floor 2a.
[0040]
Fifth Embodiment Next, an elevator hoisting machine support structure according to a fifth embodiment will be described with reference to FIG.
[0041]
The elevator hoisting machine support structure 500 of the fifth embodiment shown in FIG. 5 is different from the elevator hoisting machine support structure of each of the above-described embodiments in that the right building-side receiving beam is also a part of the main rope 5. The difference is that they are arranged between 5a and 5b.
[0042]
That is, both of the pair of left and right building-side receiving beams 62 and 63 that support the machine beam 61 from below are left and right by a portion 5a of the main rope 5 that suspends the car and a portion 5b that suspends the counterweight. It is arranged so as to extend in the front-rear direction while being sandwiched in the direction.
More specifically, the left building-side receiving beam 62 is disposed directly below the rotating shaft 3c of the traction sheave 3a, and the right building-side receiving beam 63 is disposed immediately below the rotating shaft 3d of the bent sheave 3b.
Thereby, the space | interval of the left-right direction of a pair of left-right building side receiving beams 62 and 63 is significantly narrowed compared with that of the winding machine support structure of each embodiment mentioned above.
[0043]
Accordingly, the overall length of the machine beam 61 spanned between the pair of left and right building-side receiving beams 62 and 63 is greatly shortened as compared with the machine beam in each of the above-described embodiments, and the illustration is shown. The right end face 61b is flush with the right end face 6b of the machine bed 6 in the vertical direction.
Thereby, a maintenance work space can also be provided between the right end surface 61 b of the machine beam 61 and the right wall surface 2 c of the machine room 2.
Further, the entire hoisting machine 3, machine bed 6, machine beam 61, raising machine beam 9 and a pair of left and right building side receiving beams 62 and 63 are arranged in the machine room 2 in accordance with the layout of the car and counterweight. If it is moved to the right in the figure, the maintenance work space in front of the control panel 4 can be further expanded.
[0044]
For both the pair of left and right building-side receiving beams 62 and 63, if the restraining means 30 shown in FIG. 2 or the reinforcing member 50 shown in FIG. 4 is used, vibration is generated while improving the stability of the machine beam 61. It becomes possible to prevent.
[0045]
As mentioned above, although each embodiment of the support structure of the elevator hoisting machine which concerns on this invention was described in detail, it cannot be overemphasized that this invention is not limited by embodiment mentioned above and a various change is possible.
For example, in each of the embodiments described above, the case where the hoistway 1 and the machine room 2 are provided in a steel structure (S structure) building is described as an example.
[0046]
On the other hand, like the elevator hoisting machine support structure 600 shown in FIG. 6, the support structure shown in FIG. 2 can be applied to a reinforced concrete structure (RC structure) building.
In this case, the left-side building-side receiving beam 71 is arranged at the top of the hoistway 1 so as to be sandwiched in the left-right direction by the portion 5a of the main rope 5 that suspends the car and the portion 5b that suspends the counterweight. Established.
The horizontally extending portion 32 of the connecting member 30 is connected to the lower surface of the right building-side receiving beam 72.
[0047]
Similarly, like the elevator hoisting machine support structure 700 shown in FIG. 7, the support structure shown in FIGS. 3 and 4 can be applied to a reinforced concrete structure (RC structure).
In this case, the stick or stick 40 as a restraining means for preventing the machine beam 22 from lifting is connected to a building beam 73 whose upper end is on the ceiling side of the machine room 2.
[0048]
Further, in each of the above-described embodiments, the case where the control panel 4 is arranged along the left wall surface 2b of the machine room 2 is described as an example.
On the other hand, as shown in FIG. 7, the control panel 4 can be arranged along the wall 2 d on the front side of the machine room 2.
[0049]
【The invention's effect】
As is apparent from the above description, according to the elevator hoisting machine support structure of the present invention, sufficient maintenance is provided inside the machine room while keeping the floor area of the machine room equal to or less than the area of the hoistway. A support structure for an elevator hoisting machine capable of securing a work space can be provided.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a support structure for an elevator hoist according to a first embodiment.
FIG. 2 is a sectional view showing a support structure of an elevator hoist according to a second embodiment.
FIG. 3 is a cross-sectional view showing a support structure for an elevator hoist according to a third embodiment.
FIG. 4 is a sectional view showing a support structure for an elevator hoist according to a fourth embodiment.
FIG. 5 is a sectional view showing a support structure for an elevator hoist according to a fifth embodiment.
FIG. 6 is a sectional view showing a support structure for an elevator hoist according to a sixth embodiment.
FIG. 7 is a sectional view showing a support structure for an elevator hoist according to a seventh embodiment.
FIG. 8 is a cross-sectional view showing a support structure for a conventional elevator hoisting machine.
FIG. 9 is a sectional view showing a support structure for a conventional elevator hoisting machine.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Hoistway 2 Machine room 3 Hoisting machine 3a Traction sheave 3b Warping sheave 3c, 3d Rotating shaft 4 Control panel 5 Main rope 6 Machine bed 7 Anti-vibration rubber 8 Machine beam 9 Raising machine beam 10, 12 Building side receiving beam 11 Standing wall 21 Building side receiving beam 22 Machine beam 30 Connecting member 40 Stick (restraint means)
41 building beam 50 reinforcing member 61 machine beam 62, 63 building side receiving beam 71, 72 building side receiving beam 73 building beam 100 support structure 200 of elevator hoisting machine of the first embodiment of elevator hoisting machine of the second embodiment Support structure 300 Elevator hoisting machine support structure 400 of the third embodiment Elevator hoisting machine support structure 500 of the fourth embodiment Elevator hoisting machine support structure 600 of the fifth embodiment Elevator hoisting of the sixth embodiment Support structure 700 of elevator hoisting machine support mechanism according to the seventh embodiment

Claims (5)

A structure in which a machine beam is passed between a pair of left and right building-side receiving beams arranged at the top of an elevator hoistway, and the hoisting machine is supported on the elevator machine room by placing the hoisting machine on the machine beam. Because
One of the pair of left and right building-side receiving beams is a portion of a main rope wound around a traction sheave that is rotationally driven by the hoisting machine, and a portion that hangs down from the traction sheave toward the car and a counterweight A support structure for an elevator hoisting machine, wherein the elevator hoisting machine is disposed so as to pass through a portion hanging downward. The other of the pair of left and right building-side receiving beams is also disposed so as to pass between a portion of the main rope that hangs down from the traction sheave to the car side and a portion that hangs down to the counterweight side. The elevator hoisting machine support structure according to claim 1, wherein the elevator hoisting machine support structure is provided. The support structure for an elevator hoisting machine according to claim 1 or 2, further comprising restraining means for restraining the machine beam so that the machine beam does not float from the building-side receiving beam. 4. The elevator hoisting machine support according to claim 3, wherein the restraining means is a member extending in a vertical direction between a building beam disposed on a ceiling side of the machine room and the machine beam. Construction. The elevator hoisting machine support structure according to any one of claims 1 to 4, further comprising reinforcing means for reinforcing a tip of the machine beam.

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