JP2000026041A - Elevator device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obviate the necessity for increase of the strength of a floor by receiving the upward force to be applied from a hoist to a support base of the hoist by a rail support beam to support a guide rail. SOLUTION: A pair of rail support beams 21 to be installed parallel to a pit 1a of a hoistway 1 are fixed to a floor surface 1b by anchor bolts. A pair of car guide rails 2 and weight guide rails 3 to guide the elevating/lowering operation of the car and the weight are installed with intervals on the rail support beams 21. In addition, a plurality of receiving parts 21a to receive the upward force to be applied to hoist fitting beams 23 parallel to each other are coupled with the rail support beams 21 at a coupling part 23a through a tightening piece 24. Hoist support bases 25 to support a hoist 8 are fixed to the hoist fitting beam 23 parallel to each other by a tightening piece 27. When the upward force is applied to the hoist 8, the force is transmitted to a receiving parts 21a of the rail support beams 21 through the hoist support bases 25 and the hoist fitting beams 23.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator apparatus having a hoist and a return wheel installed in a hoistway.

[0002]

2. Description of the Related Art FIG. 9 is a front view showing an example of a conventional elevator apparatus, and FIG. 10 is a developed view showing a route of a main rope of the apparatus shown in FIG. In the figure, 1 is a hoistway, 2 is a hoistway 1
A pair of car guide rails 3 are installed in the hoistway 1 at a distance from each other, and a pair of weight guide rails 4 are installed in the hoistway 1 at an interval from each other, and 4 is raised and lowered along the car guide rail 2. The car 5 as a lifting body is a counterweight as a lifting body that is raised and lowered along the weight guide rail 3.

Reference numeral 6 denotes a hoisting machine mounting beam fixed on a floor 1b of a pit (bottom portion) 1a of the hoistway 1. The hoisting machine mounting beam 6 is fixed to the floor surface by a plurality of anchor bolts 7. 1
b. Reference numeral 8 denotes a hoisting machine which is installed on a hoisting machine mounting beam 6 via a fastener 10 and raises and lowers the car 4 and the counterweight 5. The hoisting machine 8 has a rotatable sheave 9. are doing. Numeral 11 denotes a plurality of elastic bodies (anti-vibration rubber) interposed between the hoisting machine mounting beam 6 and the fastener 10 for preventing vibration and noise.

[0004] Reference numerals 12 and 13 denote hoop members fixed to guide rails 2 and 3 at the tops of the hoistway 1, respectively. Reference numerals 14 and 15 are provided at the tops of the hoistway 1 respectively. A supported rotatable return wheel, 16 is a pair of rotatable car suspension wheels provided at an interval below the car 4, and 17 is a rotatable car provided on an upper portion of the counterweight 5. It is a weight suspension car.

A main rope 18 is fixed at one end to the cleat member 12 and at the other end to the cleat member 13, and suspends the car 4 and the counterweight 5 in the hoistway 1. The middle part of 18 is a car suspension wheel 16, a return wheel 1
4, the sheave 9, the return wheel 15, and the weight suspension wheel 17 are wound in this order. Reference numerals 19 and 20 denote rope end devices for fixing both ends of the main rope 18 to the cleat members 12 and 13, respectively.

In such a conventional elevator apparatus, the sheave 9 is rotated forward and reverse by the drive of the hoisting machine 8, so that the car 4 and the counterweight 5 are alternately raised and lowered in the hoistway 1. .

At this time, an upward force F as shown in FIG. This upward force F is obtained by applying the load of the car 4 to W1, the weight of the counterweight 5 to W2, and the hoisting machine 8
Is the weight of W3, F = (W1 + W2) / 2−W3
Is required. For example, 1600 kg for W1 and 1 for W2
If 300 kg and W3 are 300 kg, F = 1150
kg.

[0008]

In the conventional elevator apparatus constructed as described above, the machine room is omitted by installing the hoisting machine 8 in the pit 1a. Since the upward force F acts on the anchor bolt 7 via the hoisting machine attachment beam 6 as a pulling force, the floor surface 1b of the pit 1a is required to have a strength capable of withstanding the pulling force. However, since the floor surface 1b of the pit 1a is generally made of concrete, the floor strength is limited.

There is also a method of welding an anchor bolt 7 to a reinforcing bar (not shown) in the concrete of the floor surface 1b. In this case, a prior meeting with a building contractor is required, and the building cost is increased. Will increase.

Further, the elastic body 11 is provided between the hoisting machine 8 and the fastener 1.
0, the number and size of the elastic members 11 are limited by the number and size of the fasteners 10 (for example, the number of the fasteners 10 is limited to four). For this reason, the surface pressure of the elastic body 11 must be set high, and sufficient characteristics as an anti-vibration rubber cannot be obtained.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and it is possible to install a hoist in a pit without applying a pulling force to the floor of the pit. It is another object of the present invention to provide an elevator apparatus capable of improving the anti-vibration performance of a hoist.

[0012]

According to the first aspect of the present invention, there is provided an elevator apparatus, which includes a hoisting machine support installed in a pit of a hoistway and a rotatable machine installed on the hoisting machine support. A hoisting machine having a sheave, a rail support beam installed in a pit and receiving an upward force acting on the hoisting machine support from the hoisting machine, a guide rail supported on the rail supporting beam, hoisting The elevating body guided by the guide rails to ascend and descend in the hoistway by the driving of the machine, the rotatable return wheel supported by the guide rails, and the sheave and the return wheel of the hoist, and the guide rails And a main rope for suspending the lifting body.

[0013] An elevator apparatus according to a second aspect of the present invention comprises:
It uses a hoisting machine support having a pair of support plates installed in a pit facing each other and each having an opening, and support beams having both ends inserted into the openings.

According to a third aspect of the present invention, there is provided an elevator apparatus comprising:
A hoisting machine support having a fixed beam facing the upper and lower surfaces of the supporting beam and fixing the hoisting machine, and an elastic body interposed between the supporting beam and the fixed beam is used.

According to a fourth aspect of the present invention, there is provided an elevator apparatus comprising:
A hoisting machine mounting beam having a connecting portion coupled to the rail supporting beam and installed in the pit and having a hoisting machine support mounted thereon, wherein the connecting portion is coupled to the rail supporting beam. A receiving portion is provided, and the connecting portion is inserted under the receiving portion and connected to the receiving portion.

According to a fifth aspect of the present invention, there is provided an elevator apparatus comprising:
The hoisting machine support is directly fixed to the rail support beam.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. Embodiment 1 FIG. FIG. 1 is a front view showing an installed state of a hoist of an elevator apparatus according to Embodiment 1 of the present invention, FIG. 2 is a plan view showing an installed state of a hoist of FIG. 1, and FIG.
FIG. 4 is a sectional view taken along line IV-IV of FIG.
FIG. 5 is an exploded perspective view showing a portion V in FIG. 3 in an enlarged manner.

In the figure, reference numeral 21 denotes a pit 1a of the hoistway 1.
And a pair of rail support beams having an I-shaped cross section installed in parallel with each other. These rail support beams 21 are fixed to the floor surface 1b of the pit 1a by anchor bolts 22. A pair of cage guide rails 2 are installed on the rail support beam 21 at a distance from each other, and a pair of car guide rails for guiding the elevation of the car 4 (FIG. 9). It is a pair of weight guide rails for guiding the lifting and lowering of the weight 5 (FIG. 9).

Reference numeral 23 denotes a pair of hoisting machine mounting beams having a U-shaped cross section which are installed in parallel with each other on the floor surface 1c. These hoisting machine mounting beams 23 are perpendicular to the rail support beams 21. Extending in the direction of. At both ends of each hoisting machine mounting beam 23, a connecting portion 2 inserted below the rail support beam 21 is provided.
3a are formed. Further, the rail support beam 21 is provided with a plurality of receiving portions 21a for receiving an upward force acting on the hoisting machine mounting beam 23, and these receiving portions 2a are provided.
A coupling portion 23a is coupled to 1a via a fastener 24.

Reference numeral 25 is attached to the hoist attachment beam 23,
The hoisting machine support 25 supports the hoisting machine 8, and the hoisting machine support 25 is fixed to the hoisting machine mounting beam 23 by fasteners 27 so as to face each other. A pair of support plates 26 provided one by one, and a pair of support beams 28 each having a U-shaped cross section and having both ends inserted through the opening 26a.
A fixed beam 29 opposed to the upper and lower surfaces of the support beams 28 to which the hoisting machine 8 is fixed; and a plurality of vibration / noise prevention intervening between the support beams 28 and the fixed beams 29. And an elastic body (anti-vibration rubber) 30.

The route of the main rope 18 is the same as that shown in FIGS. 9 and 10, and when the hoist 8 is rotated in the normal and reverse directions by driving the hoisting machine 8, the car 4 and the counterweight 5 are moved. It is raised and lowered alternately along the guide rails 2 and 3.

In such an elevator apparatus, an upward force acts on the hoist 8 similarly to the conventional example, but this upward force is transmitted via the hoist support 25 and the hoist mounting beam 23. It is transmitted to the receiving portion 21a of the rail support beam 21. Thus, the upward force acting on the hoisting machine 8 is ultimately received by the rail support beam 21.

On the other hand, since the cleat members 12, 13 and the return wheels 14, 15 are attached to the guide rails 2, 3, the load of the car 4 and the weight of the counterweight 5 act. . Therefore, the upward force transmitted to the rail support beam 21 is offset by the downward force acting on the guide rails 2 and 3, and the upward force does not act on the building. Then, the weight of the entire elevator apparatus is supported by the floor surface 1b. That is, the hoisting machine 8 can be installed in the pit 1a without applying a pulling force to the floor 1b of the pit 1a.

Further, since the hoisting machine support 25 having a structure in which the elastic body 30 is interposed between the support beam 28 and the fixed beam 29 is used, and a sufficient installation space for the elastic body 30 is ensured. The degree of freedom in selecting the size, shape, hardness, and the like of the body 30 is improved, and the vibration isolation performance can be improved.

In the first embodiment, the rail support beams 21
And the hoisting machine mounting beam 23 and between the hoisting machine mounting beam 23 and the support plate 26 are fixed using the fasteners 24 and 26, but the fixing method is not limited to this. For example, welding may be performed.

Embodiment 2 FIG. Next, FIG. 6 is a plan view showing an elevator apparatus according to Embodiment 2 of the present invention, FIG. 7 is a side view showing the apparatus of FIG. 6, and FIG. 8 is VIII-VI of FIG.
It is II sectional drawing. In the figure, reference numeral 31 denotes a hoisting machine support that is directly attached to the rail support beam 21 and supports the hoisting machine 8. The hoisting machine support 31 is fixed to the rail by a fastener 33 so as to face each other. A pair of support plates 32 fixed to the support beam 21 and provided with two openings 32a, a pair of support beams 34 each having a U-shaped cross section having both ends inserted through the openings 32a, A fixed beam 35 supported by the support beam 34 to which the hoist 8 is fixed, and a plurality of elastic bodies (vibration-proof rubber) interposed between the support beam 34 and the fixed beam 35 for preventing vibration and noise 36.
The elastic body 36 is arranged on the right side of FIG. 8 above the support beam 34 and on the left side of FIG. 8 below the support beam 34.

As described above, even when the hoisting machine mounting base 31 is directly fixed to the rail support beam 21, the upward force acting on the hoisting machine 8 is generated by the downward force acting on the guide rails 2, 3. Offset, no upward force on the building. Therefore, the hoisting machine 8 can be installed in the pit 1a without applying a pulling force to the floor 1b of the pit 1a. Further, since the hoisting machine mounting base 31 is directly fixed to the rail support beam 21, the structure is simplified and the number of parts is reduced.

However, in this structure, since the length of the support beam 34 bridged between the support plates 32 is increased and the bending moment is increased, it is suitable for a relatively small elevator apparatus in which the interval between the rail support beams 21 is small. ing.

As shown in FIG. 8, when the sheave 9 is disposed at the end of the hoisting machine 8, the upward force F causes a reaction force between the support beam 34 and the fixed beam 35. Although f1 and f2 act, the elastic body 36 may be arranged at a portion where such reaction forces f1 and f2 act.

In the second embodiment, the rail support beams 21
Although the space between the support plate 32 and the support plate 32 is fixed by the fastener 33, the fixing method is not limited to this, and may be fixed by welding, for example.

The arrangement of the main ropes 18 is not limited to that shown in FIG. 10. The present invention is applicable to any elevator apparatus in which an upward force acts on the hoist installed in the pit 1a from the main ropes. can do.

[0032]

As described above, in the elevator apparatus according to the first aspect of the present invention, the rail support beam supporting the guide rail receives the upward force acting on the hoist support from the hoist. As a result, the upward force transmitted to the rail support beam is offset by the downward force acting on the guide rail, and the upward force does not act on the building. Therefore, the hoist can be installed on the pit without exerting a pulling force on the floor of the pit, and the floor strength is not required more and the construction cost can be prevented from increasing.

According to a second aspect of the present invention, there is provided an elevator apparatus having a pair of support plates installed in a pit facing each other and having a pair of support plates each having an opening, and a support beam having both ends inserted into the openings. Since the upper machine support is used, sufficient strength can be secured against an upward force acting on the hoist.

According to a third aspect of the present invention, there is provided an elevator apparatus, comprising: a fixed beam having a hoist fixed to the upper and lower surfaces of the support beam;
Since the hoist support having the elastic body interposed between the support beam and the fixed beam is used, a sufficient space for disposing the elastic body can be secured, and the size and shape of the elastic body In addition, the degree of freedom in selecting hardness and hardness can be improved, and the vibration isolation performance can be improved.

According to a fourth aspect of the present invention, in the elevator apparatus, the hoisting machine support is attached to the hoisting machine mounting beam, and the connecting portion of the hoisting machine mounting beam is inserted under the rail supporting beam to be connected. Therefore, the upward force acting on the hoisting machine support can be more reliably transmitted to the rail support beam.

In the elevator apparatus according to the fifth aspect of the present invention, since the hoisting machine support is directly fixed to the rail support beam, the structure can be simplified and the number of parts can be reduced.

[Brief description of the drawings]

FIG. 1 is a front view showing an installed state of a hoist of an elevator apparatus according to Embodiment 1 of the present invention.

FIG. 2 is a plan view showing a state where the hoist of FIG. 1 is installed.

FIG. 3 is a sectional view taken along line III-III of FIG. 1;

FIG. 4 is a sectional view taken along line IV-IV of FIG. 3;

FIG. 5 is an exploded perspective view showing a V part of FIG. 3 in an enlarged manner.

FIG. 6 is a plan view showing an elevator apparatus according to Embodiment 2 of the present invention.

FIG. 7 is a side view showing the device of FIG. 6;

FIG. 8 is a sectional view taken along line VIII-VIII of FIG. 7;

FIG. 9 is a front view showing an example of a conventional elevator device.

FIG. 10 is a developed view showing a route of a main rope of the apparatus of FIG. 9;

[Explanation of symbols]

1 hoistway, 1a pit, 1b floor, 2 car guide rail, 3 weight guide rail, 4 car (elevator), 5 counterweight (elevator), 8 hoist, 9 sheave,
14, 15 return car, 18 main rope, 21 rail support beam, 21a receiving part, 23 hoisting machine mounting beam, 23a
Coupling part, 25, 31 Hoisting machine support, 26, 32 Support plate, 26a, 32a Opening, 28, 34 Support beam, 2
9,35 fixed beam, 30,36 elastic body.

Claims (5)

[Claims] 1. A hoist support installed in a hoistway pit, a hoist having a rotatable sheave installed on the hoist support, and installed in the pit, A rail support beam receiving an upward force acting on the hoisting machine support from the hoisting machine, a guide rail supported on the rail supporting beam, and guided by the guide rail by driving of the hoisting machine Elevating body that moves up and down in the hoistway, a rotatable return wheel supported by the guide rail, and a sheave of the hoisting machine and the hoisting wheel. An elevator apparatus comprising a main rope for suspending a body. 2. A hoisting machine support base is provided in a pit opposed to each other, and has a pair of support plates each having an opening, and a support beam having both ends inserted into the opening. The elevator apparatus according to claim 1, wherein 3. A hoisting machine support, comprising: a fixed beam facing the upper and lower surfaces of a supporting beam to which a hoisting machine is fixed; and an elastic body interposed between the supporting beam and the fixed beam. The elevator apparatus according to claim 2, comprising: 4. A hoisting machine mounting beam having a connecting portion connected to the rail supporting beam and installed in the pit and having a hoisting machine support mounted thereon, wherein the rail supporting beam includes: A receiving portion to which the coupling portion is coupled is provided,
The elevator apparatus according to any one of claims 1 to 3, wherein the connecting portion is inserted below the receiving portion and connected to the receiving portion. 5. The elevator apparatus according to claim 1, wherein the hoist support is directly fixed to the rail support beam.