JP2006264901A - Elevator winding machine device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a winding machine device capable of variously changing position of a winding machine receiver beam and a sheave and arrangement of a bearing receiver beam, regardless of equipment inside a hoistway, in the case wherein a car is hoisted at two positions by a 1:1 roping suspension of an elevator without a machine chamber. <P>SOLUTION: The winding machine 17 is provided with a first sheave 18 and an outer cylindrical shaft 18b passing long through a motor, and a spline groove is formed in the inner peripheral surface of the outer cylindrical shaft 18b, and a spline shaft 18c to be brought into contact with the spline groove is fitted in the spline groove, and a second sheave 18a and a bearing 18d are slidably fitted to the spline shaft. A constant velocity joint 18e is fitted to the spline shaft so that an angle between the first sheave and the second sheave can be changed in the same plane. With this structure, even if equipment is provided inside the hoistway, position of the winding machine and the bearing receiver beam can be arranged, avoiding it, and furthermore, device costs can be reduced. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a hoisting machine capable of changing the hoisting machine beam of the machine room-less elevator, the sheave position and the arrangement of the bearing receiving beam in various ways without being restricted by the equipment in the hoistway.

The machine room-less elevator does not require a machine room space, and the top gap of the hoistway can be made small, so it has gained popularity and has grown in demand. In early machine room-less elevators, the rope suspension method was set to 2: 1 roping, and two suspension vehicles were lined up at the left and right ends of the lower side of the cage, and the suspension rope was shifted outward from the projected area of the cage. The top gap was reduced.
However, elevators with a small capacity have a problem that they are relatively expensive because the hoisting machine is relatively large, and a return wheel or suspension car is required and the rope length is also doubled. In elevators, 1: 1 roping is being promoted.

Announcement of Application No. 63-46452 (Fig. 1) JP-A-11-139730 (FIG. 1) JP 2002-179358 A (FIG. 1) JP 2004-155526 A (FIGS. 1 and 7)

  What is shown in the said patent document 1 shows the hoisting machine part of the elevator with a conventional machine room, and is an example of a 1: 1 roping system. The hoisting machine disposed at the top of the hoistway of the machine room-less elevator is shown in FIGS. In this example, there is a rope hanging point in the center of the car, so it is necessary to secure the top clearance from there and allow for the hoisting machine receiving beam and the hoisting machine mounting space, so a large height space is required at the top of the car There was a problem of becoming.

  What is shown in the said patent document 2 shows the 1: 1 roping system of the conventional machine room less elevator. This is shown in Figs. 3 and 4. In this example, the main shaft of the hoisting machine is made long, sheaves are arranged at both ends, and two sides of the car are suspended by ropes. The mounting counterweight is lengthened and two places are hung. The top clearance of the car can be made small because the suspension point is outside the projected area of the car, but the hoisting machine must be made to fit the size of the car's frontage for each work, and the balance weight of the car There was a problem that the cost was high because it was necessary to make the length according to the size of the frontage.

  The above-mentioned patent document 3 shows another example of the preceding paragraph. The main shaft of the hoisting machine is made long and sheaves are arranged at both ends, and two sides of the car are hung with ropes, and the counterweight is Although there are few restrictions on the arrangement of the counterweight with the two sets attached, there is a problem that the cost increases because two sets of guide rails and shock absorbers attached to the counterweight are necessary.

  What is shown in the said patent document 4 shows the other example of the 1: 1 roping system of the conventional machine room less elevator. In this example, two sets of hoisting machines are attached. FIG. 5 shows an application of this. Since the hoisting machines are attached separately, if they are arranged at an angle in a plane, it is not necessary to make a counterweight for a long time, and the unreasonableness in the layout can be eliminated. However, there is a problem that it is expensive because two sets of hoisting machines are required.

     The present invention has been made to solve such a problem, and is a hoisting machine outer cylinder shaft provided with a first sheave, and a second spline that has a spline groove formed in the longitudinal direction on the inner surface thereof and inscribed in the longitudinal direction. A shaft is slidably loosely fitted, and a second sheave slidable on the spline shaft and a second bearing are attached. If the spline shaft is long, a third bearing can be added near the center of the spline shaft.

     As a result, the distance between the two sheaves can be arbitrarily changed by one hoisting machine, and therefore, it is not necessary to manufacture a hoisting machine in which the distance between the two sheaves is changed for each destination, thereby reducing the cost. it can.

Embodiment 1.
7 is a plan view of a hoistway according to the first embodiment of the present invention, FIG. 8A is a view of a hoisting machine mechanism of FIG. 7, and FIG. 9 is a detailed view of a sheave and a bearing attached to a spline shaft. In the figure, 1 is a car, 2 is a car frame, 2a is a hanging frame, 3 is a counterweight, 4 is a hoistway, 5 is a car guide rail, 6 is a counterweight guide rail, 11 is a hoisting machine support beam, and 11a is a bearing. 13 is a hoisting rope, 17 is a hoisting machine, 18 is a sheave, 18a is a sheave, 18b is an outer cylinder shaft, 18c is a spline shaft, 18d is a bearing, 19 is a wheel, 19a is a set screw, 21 and 22 are safety covers.

  A hoisting machine equipped with a motor in an elevator that relatively raises and lowers a car and a counterweight via a main rope, a first sheave shaft / motor shaft 18b is formed in a cylindrical shape and is splined longitudinally on the inner surface of the tube. A second spline shaft 18c that is provided with a groove and slidably engages with the spline groove is loosened so that the protruding dimension of the spline shaft can be adjusted, and the spline shaft 18c is slidably mounted on the shaft. A second sheave 18a and a second bearing 18d are provided.

      As a result, the distance between the first sheave 18 and the second sheave 18a can be arbitrarily changed, and the bearing 18d can be mounted anywhere on the axis of the spline shaft 18c.

      After installation and positioning, the position of the spline shaft 18c and the bearing 18d in the axial direction of the spline shaft is fixed by a position fixing screw 19a shown in FIG. 9. Similarly, the second sheave 18a is also on the axis of the second spline shaft 18c. The position in the axial direction is fixed by the position fixing screw 19a.

     Since the outer cylinder shaft 20a and the spline shaft 18c of the hoisting machine main body can be slid in the lateral direction by the spline groove, it is possible to absorb the temperature distortion and the length distortion due to shaft warpage.

Machine room-less elevators have hoistway equipment in the hoistway and are subject to restrictions when passing bearings and hoisting beams, but the bearing position of this plan can be slid on the spline shaft. If there is other hoistway equipment in the passage, it can be shifted and installed in an empty space.

     Further, since the outer cylinder shaft of the hoisting machine is also attached to the motor side, if the outer cylinder shaft is attached to the motor side and the motor is arranged on the car side as shown in FIG. The position of the upper machine receiving beam can be changed to the car side, so that it can be in the escaped position when the receiving beam interferes with the hoistway equipment.

Embodiment 2. FIG.
FIG. 10 is a view corresponding to FIG. 7 of Embodiment 2 of the present invention. In the figure, 19 is a sorcerer wheel, 20 is a hoisting machine, and 20a is an outer cylinder shaft.

  In this example, the sheave of the hoisting machine is cut off and the motor shaft 20a is configured to be long as an outer cylinder shaft, projecting on both sides of the motor, and provided with spline grooves in the longitudinal direction inside the outer cylinder shaft, the hoisting machine A second sheave 18a, a third sheave 18a, and a second sheave 18a that are attached to the respective spline shafts by loosely fitting the second and third spline shafts 18c so as to be slidable from both sides of the outer cylinder shaft to the inner surface. The second bearing and the third bearing 18d are attached.

Also, after installation and positioning, the spline shaft and the bearing are fixed in the axial direction of the spline shaft by a position fixing screw 19a shown in FIG. 9 as in the previous section. Similarly, the sheave is also fixed on the spline shaft by a position fixing screw 19a. The axial position is fixed. Further, since the outer cylinder shaft and the spline shaft of the hoisting machine main body can be slid in the lateral direction by the spline groove, the temperature rise and the length distortion due to shaft warpage can be absorbed in the same manner as in the previous section.

  When the hoisting machine 20 is arranged in the center, but there is other equipment in the center of the hoistway and the hoisting machine receiving beam cannot be passed, the hoisting machine should be arranged eccentrically at a position avoiding it. In addition, since the positions of the second and third bearings 18d on both outer sides can also be arranged inside the sheave, it is possible to place the receiving beam in a position that avoids interference with other hoistway equipment. Become.

  As a result, the position of the beam receiving position of the hoisting machine and the bearing can be arbitrarily selected as in the previous section, so that various layouts can be handled.

Embodiment 3 FIG.
12, 13, and 14 show examples applied to the conventional FIGS. 5 and 6, FIG. 12 is a plan view of a hoistway, 13 is a perspective view of a drive mechanism, and FIG. 14 is a detailed view of a constant velocity joint, a spline shaft, and a bearing. is there. In the figure, 18e is a constant velocity joint, 18f is a guide outside the ball, 18g is a guide inside the ball, and 18h is a ball.

  The hoisting machine is the same as that shown in the first embodiment, but a constant velocity joint 18e is attached in the middle of the spline shaft so that the first sheave 18 and the second sheave 18a have a plane angle. The drive force can be transmitted smoothly. Further, if the bearing 18d is disposed outside the second sheave 18a and the bearing 18d is also installed near the constant velocity joint 18e, the sheave can be stably supported.

  Conventionally, two hoisting machines are required, but in this embodiment, it is possible to cope with one hoisting machine, and the position of the receiving beam can be arbitrarily selected. Further, the positions of the hoisting machine and the first sheave are also interchanged in the same manner as in FIG.

Embodiment 4 FIG.
FIG. 15 shows a configuration in which two constant velocity joints 18e are inserted into the spline shaft 18c of the third embodiment.

  Since the apparatus is more compact than that of the third embodiment and an empty space is created at the top of the hoistway, a control panel or the like can be arranged.

Embodiment 5. FIG.
FIG. 16 shows the fourth embodiment in which the hoisting machine is arranged at the center of the hoistway, and the hoisting machine is the same as that shown in FIGS. 10 and 11 of the second embodiment. This embodiment can cope with a case where the hoisting machine cannot be arranged at the end of the hoistway. Further, when there is another device in the center of the hoistway and the hoisting beam cannot be passed, the hoisting machine can be arranged eccentrically at a position avoiding it. It can handle various layouts as well.

Since the present invention is configured as described above, the following effects can be obtained.
There is the merit that the hoisting machine can be made inexpensive and the receiving position of the hoisting machine and the bearing can be selected arbitrarily, and it is convenient for the machine room-less elevator with limited space where each related equipment must be arranged in the hoistway. is there.

The hoistway top view of what suspended the center of the cage | basket with the rope by the 1: 1 roping system of the conventional machine room less elevator. The perspective view of FIG. The hoistway top view of what suspended the cage | basket | car in two ropes by the 1: 1 roping system of the conventional machine room less elevator. FIG. 4 is a perspective view of FIG. 3. The hoistway top view of what suspended the cage | basket with 2 hoisting machines by the conventional 1: 1 roping system. FIG. 6 is a perspective view of FIG. 5. The hoistway top view of Embodiment 1 of this invention. Figure A is the composition of the hoisting machine of FIG. Fig. B is a diagram in which the motor of the hoisting machine of Fig. A is arranged facing the inside of the car. It is detail drawing of a sheave and a bearing attached to a spline shaft. It is a figure equivalent to FIG. 7 of Embodiment 2 of this invention. The hoisting machine composition of FIG. The hoistway top view of Embodiment 3 which applied this plan to the prior art example of FIG. FIG. 13 is a perspective view of the hoisting machine structure of FIG. 12. Sectional drawing of the constant velocity joint of FIG. The fourth embodiment is shown in a mechanism diagram of the third embodiment in which two constant velocity joints are inserted. A hoisting machine according to a fourth embodiment is arranged at the center of the car, and a fifth embodiment is shown.

Explanation of symbols

1 basket,
2 cage,
2a hanging frame,
3 counterweight,
4 hoistway,
5 Car guide rail,
6 Counterweight guide rail,
11 Hoisting beam
11a Bearings and beams
13 hoisting rope,
17 hoisting machine,
18 sheaves,
18a sheave,
18b outer cylinder shaft,
18c spline shaft,
18d bearing,
18e constant velocity joint,
18f ball outside guide,
18g Ball guide,
18h ball,
19 Solase car,
19a set screw,
20 hoisting machine,
20a outer cylinder shaft,
21, 22 Safety cover,

Claims (6)

The elevator hoisting machine includes a car and a counterweight, a guide rail, a hoisting machine, a deflecting wheel, and a hanging rope, and the elevator hoisting machine that lifts and lowers the car and the counterweight via the hoisting rope is also used as the first sheave axle. A motor shaft is configured to be long in a cylindrical shape, a spline groove is provided in a longitudinal direction on an inner surface of a cylinder of the first sheave shaft, and a second spline shaft that is slidably loosely fitted in the spline groove is provided. A hoisting machine apparatus, wherein the shaft has a spline groove on its outer shape, and a second sheave and a second bearing that are slidably attached to the spline shaft. The motor part of the hoisting machine is separated from the first sheave and the motor shaft is extended to both sides from the motor part. The motor shaft is formed in a cylindrical shape and is splined in the longitudinal direction on the inner surface of the cylinder of the motor shaft. A second spline shaft and a third spline shaft that are slidably and slidably fitted to the spline groove from both sides. The spline shaft has a spline groove on the outer periphery and is slidably attached to each spline shaft. The hoist apparatus according to claim 1, further comprising a second sheave and a third sheave, and a second bearing and a third bearing. The hoist according to claim 1 or 2, wherein the sheave and the bearing slidably attached to the spline shaft include at least one engaging member for restricting a position in an axial direction. apparatus. The hoisting machine apparatus according to claim 3, wherein the engagement element is a hexagon socket head cap screw. The hoisting machine apparatus according to any one of claims 1 to 4, wherein the spline shaft of the hoisting machine is provided with at least one constant velocity joint in the middle thereof. The hoist apparatus according to any one of claims 1 to 5, wherein the shaft portion of the hoist is provided with a protective cover for concealing the rotating part.

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