JP3694010B2 - Elevator equipment - Google Patents

Description

  The present invention relates to an elevator apparatus in which a hoisting machine and a return wheel are installed in a hoistway.

  FIG. 9 is a front view showing an example of a conventional elevator apparatus, and FIG. 10 is a development view showing a route of a main rope of the apparatus of FIG. In the figure, 1 is a hoistway, 2 is a pair of car guide rails installed in the hoistway 1 at intervals, and 3 is a pair of weight guides installed in the hoistway 1 at intervals. Rails 4 and 4 are cages that are raised and lowered along the car guide rails 2, and 5 is a counterweight that is raised and lowered along the weight guide rails 3.

  Reference numeral 6 denotes a hoisting machine mounting beam fixed on the floor 1b of the pit (bottom) 1a of the hoistway 1. The hoisting machine mounting beam 6 is fixed to the floor 1b by a plurality of anchor bolts 7. Has been. A hoisting machine 8 is installed on the 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. Reference numeral 11 denotes a plurality of elastic bodies (vibration-proof rubber) for preventing vibration and noise interposed between the hoisting machine mounting beam 6 and the fastener 10.

  Reference numerals 12 and 13 denote tether members fixed to the guide rails 2 and 3 at the top of the hoistway 1, respectively, and reference numerals 14 and 15 are provided at the top of the hoistway 1 and supported by the guide rails 2 and 3, respectively. 16 is a rotatable return wheel, 16 is a pair of freely rotatable car suspensions provided at the lower part of the car 4 and spaced apart from each other, and 17 is a rotatable weight suspension provided at the upper part of the counterweight 5. It is a car.

  Reference numeral 18 denotes a main rope having one end fixed to the rope fixing member 12 and the other end fixed to the rope fixing member 13, and suspending the car 4 and the counterweight 5 in the hoistway 1. The parts are wound in the order of the car suspension wheel 16, the return wheel 14, the sheave 9, the return wheel 15, and the weight suspension wheel 17. Reference numerals 19 and 20 denote rope end devices for fixing both ends of the main rope 18 to the rope fastening members 12 and 13, respectively.

  In such a conventional elevator apparatus, the car 4 and the counterweight 5 are alternately raised and lowered in the hoistway 1 by rotating the sheave 9 forward and backward by driving the hoisting machine 8.

  At this time, an upward force F as shown in FIG. 10 acts on the hoisting machine 8. This upward force F is obtained by F = (W1 + W2) / 2−W3, where W1 is the load of the car 4, W2 is the weight of the counterweight 5, and W3 is the weight of the hoisting machine 8. For example, if W1 is 1600 kg, W2 is 1300 kg, and W3 is 300 kg, F = 1150 kg (see, for example, Patent Document 1).

JP 11-310372 A

  In the conventional elevator apparatus configured as described above, the machine room is omitted by installing the hoisting machine 8 in the pit 1a, but the upward force F applied to the hoisting machine 8 is caused by the hoisting machine 8. Since it acts as a pulling force on the anchor bolt 7 via the mounting beam 6, the floor surface 1b of the pit 1a is required to have a strength that can withstand 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 the 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 necessary, and the construction cost increases. End up.

  Furthermore, since the elastic body 11 is interposed between the hoisting machine 8 and the fastener 10, the number and size of the elastic bodies 11 are limited by the number and size of the fasteners 10 (for example, The fastener 10 is limited to four). For this reason, the surface pressure of the elastic body 11 has to be set high, and sufficient characteristics as an anti-vibration rubber cannot be obtained.

  The present invention has been made in order to solve the above-described problems. The hoisting machine can be installed in the pit without applying a pulling force to the floor surface of the pit. An object of the present invention is to obtain an elevator apparatus capable of improving the vibration isolation performance.

  An elevator apparatus according to the present invention includes a hoisting machine support base installed in a pit of a hoistway, a hoisting machine having a rotatable sheave installed on the hoisting machine support base, and installed in a pit The rail support beam that receives the upward force acting on the hoisting machine support from the hoisting machine, the guide rail supported on the rail supporting beam, and driven by the hoisting machine to be moved up and down by the guide rail Elevating body that moves up and down in the road, a rotatable return wheel supported by a guide rail, and a main rope that hangs on the sheave and return wheel of the hoisting machine and suspends the lifting body from the guide rail It is a thing.

  In the elevator apparatus according to the present invention, the upward force acting on the hoisting machine support base from the hoisting machine is received by the rail supporting beam supporting the guide rail. Therefore, the upward force transmitted to the rail supporting beam is It is offset by the downward force acting on the guide rail, and the upward force does not act on the building. Therefore, the hoisting machine can be installed in the pit without applying a pulling force to the floor surface of the pit, the floor strength is not required more, and the construction cost can be prevented from increasing.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

Embodiment 1 FIG.
1 is a front view showing a hoisting machine installation state of an elevator apparatus according to Embodiment 1 of the present invention, FIG. 2 is a plan view showing the hoisting machine installation state of FIG. 1, and FIG. 3 is a line III-III in FIG. 4 is a cross-sectional view taken along the line IV-IV in FIG. 3, and FIG. 5 is an exploded perspective view showing a V portion in FIG. 3 in an enlarged manner.

  In the figure, 21 is a pair of I-shaped rail support beams installed in parallel to the pit 1 a of the hoistway 1, and these rail support beams 21 are attached to the floor surface 1 b of the pit 1 a by anchor bolts 22. It is fixed. 2 is installed on the rail support beam 21 at a distance from each other, and a pair of car guide rails for guiding the raising and lowering of the car 4 (FIG. 9), and 3 is installed on the rail support beam 21 at a distance from each other. 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 installed in parallel with each other on the floor surface 1c. These hoisting machine mounting beams 23 are perpendicular to the rail support beam 21. It extends. Further, at both end portions of each hoisting machine mounting beam 23, a coupling portion 23a inserted into the lower portion of the rail support beam 21 is formed. Furthermore, the rail support beam 21 is provided with a plurality of receiving portions 21 a that receive upward force acting on the hoisting machine mounting beam 23, and the coupling portion 23 a is connected to these receiving portions 21 a via fasteners 24. Are combined.

  A hoisting machine support base 25 is attached to the hoisting machine mounting beam 23 and supports the hoisting machine 8. The hoisting machine support base 25 is fastened by a fastener 27 so as to face each other. A pair of support plates 26 fixed to the mounting beam 23 and provided with two openings 26a, a pair of support beams 28 having a U-shaped cross section with both ends inserted through the openings 26a, and A fixed beam 29 facing the upper and lower surfaces of the support beam 28 to which the hoisting machine 8 is fixed, and a plurality of elastic bodies for preventing vibration and noise (anti-proof) interposed between the support beam 28 and the fixed beam 29. Vibration rubber) 30.

  The route of the main rope 18 is the same as in FIGS. 9 and 10, and the sheave 9 is rotated in the forward and reverse directions by driving the hoisting machine 8, so that the car 4 and the counterweight 5 are connected to the guide rail 2. , 3 are alternately raised and lowered.

  In such an elevator apparatus, an upward force is applied to the hoisting machine 8 as in the conventional example. This upward force is applied to the rail support beam via the hoisting machine support base 25 and the hoisting machine mounting beam 23. 21 to the receiving portion 21a. Thus, the upward force acting on the hoisting machine 8 is finally received by the rail support beam 21.

  On the other hand, since the rope stoppers 12 and 13 and the return wheels 14 and 15 are attached to the guide rails 2 and 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. And the weight of the whole 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 surface 1b of the pit 1a.

  Further, the hoisting machine support base 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 secured. The degree of freedom in selecting the size, shape, hardness and the like is improved, and the vibration isolation performance can be improved.

  In the first embodiment, the rail support beam 21 and the hoisting machine mounting beam 23 and the hoisting machine mounting beam 23 and the support plate 26 are fixed using the fasteners 24 and 26. A method is not limited to this, For example, you may weld.

Embodiment 2. 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 a sectional view taken along line VIII-VIII of FIG. In the figure, 31 is a hoisting machine support that is directly attached to the rail support beam 21 and supports the hoisting machine 8, and this hoisting machine support 31 is railed 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 U-shaped support beams 34 having both ends inserted into the openings 32a, and A fixed beam 35 supported by the support beam 34 to which the hoisting machine 8 is fixed, and a plurality of elastic bodies (anti-vibration rubber) for vibration and noise prevention interposed between the support beam 34 and the fixed beam 35 36. The elastic body 36 is arranged close to the right side of FIG. 8 above the support beam 34 and to the left side of FIG. 8 below the support beam 34.

  Thus, 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 offset by the downward force acting on the guide rails 2 and 3, No upward force is applied to the building. Therefore, the hoisting machine 8 can be installed in the pit 1a without applying a pulling force to the floor surface 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, this structure is suitable for a relatively small elevator apparatus in which the distance between the rail support beams 21 is small because the length of the support beam 34 spanned between the support plates 32 is increased and the bending moment is increased.

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

  Moreover, in Embodiment 2, between the rail support beam 21 and the support plate 32 was fixed with the fastener 33, However, The fixing method is not limited to this, For example, you may fix by welding.

  Further, the arrangement of the main rope 18 is not limited to that shown in FIG. 10, and the present invention can be applied to any elevator device in which an upward force acts on the hoist installed in the pit 1 a from the main rope. it can.

As described above, the elevator apparatus according to the present invention receives the upward force acting on the hoisting machine support from the hoisting machine by the rail supporting beam that supports the guide rail, and is thus transmitted to the rail supporting beam. The upward force is offset by the downward force acting on the guide rail, and the upward force does not act on the building. Accordingly, the hoisting machine can be installed in the pit without applying a pulling force to the floor surface of the pit, so that the floor strength is not required more and the construction cost can be prevented from increasing.
In addition, since the hoisting machine support base having a pair of support plates that are installed in the pit so as to face each other and each has an opening and a support beam having both ends inserted into the opening is used, Sufficient strength can be secured against the upward force acting on the machine.
Furthermore, since a hoisting machine support base having a fixed beam facing the upper and lower surfaces of the support beam and fixing the hoisting machine and an elastic body interposed between the supporting beam and the fixed beam is used, A sufficient space for placing the elastic body can be ensured, the degree of freedom in selecting the size, shape, hardness and the like of the elastic body can be improved, and the vibration isolation performance can be improved.
Furthermore, the hoisting machine support base is attached to the hoisting machine mounting beam, and the connecting portion of the hoisting machine mounting beam is inserted under the rail support beam so as to be coupled. The upward force to be transmitted can be more reliably transmitted to the rail support beam.
In addition, since the hoisting machine support base is directly fixed to the rail support beam, the structure can be simplified and the number of parts can be reduced.

It is a front view which shows the winding machine installation state of the elevator apparatus by Embodiment 1 of this invention. It is a top view which shows the winding machine installation state of FIG. It is the III-III sectional view taken on the line of FIG. It is the IV-IV sectional view taken on the line of FIG. It is a disassembled perspective view which expands and shows the V section of FIG. It is a top view which shows the elevator apparatus by Embodiment 2 of this invention. It is a side view which shows the apparatus of FIG. It is the VIII-VIII sectional view taken on the line of FIG. It is a front view which shows an example of the conventional elevator apparatus. FIG. 10 is a development 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 (lifting body), 5 counterweight (lifting body), 8 hoisting machine, 9 sheave, 14, 15 Car, 18 main rope, 21 rail support beam, 21a receiving part, 23 hoisting machine mounting beam, 23a coupling part, 25, 31 hoisting machine support base, 26, 32 support plate, 26a, 32a opening, 28, 34 Support beam, 29, 35 Fixed beam, 30, 36 Elastic body.

Claims (3)

Hoisting machine support installed at the bottom of the hoistway,
A hoisting machine installed on this hoisting machine support and having a rotatable sheave;
A rail support beam installed in the hoistway and receiving an upward force acting on the hoisting machine support from the hoisting machine;
A pair of guide rails supported on this rail support beam,
A lifting body that is guided by the guide rail and moves up and down in the hoistway by driving the hoisting machine,
Rotatable diverting pulley that is supported by the guide rails, and is wound around the sheave and the return sheave of the hoisting machine, comprising a main rope for suspending the lifting body relative to the guide rail, the rail An upward force acting on the support beam is canceled by a downward force acting on the guide rail from the return wheel . The hoisting machine support table is installed at the bottom of the hoistway so as to face each other, and has a pair of support plates each having an opening, and support beams having both ends inserted into the opening. The elevator apparatus according to claim 1. The hoisting machine support base includes a fixed beam that faces the upper and lower surfaces of the support beam and to which the hoisting machine is fixed, and an elastic body that is interposed between the support beam and the fixed beam. The elevator apparatus according to claim 2, wherein the elevator apparatus is provided.

Images