JP6362778B2 - Method for manually driving elevator hoisting machine and manual driving device for elevator hoisting machine - Google Patents

Description

  The present invention relates to a method for manually driving an elevator hoist and a manual drive device for an elevator hoist.

  In a conventional elevator, a hoist using a gear is the mainstream, and a rescue method by a manual winding operation using a gear boosting mechanism by attaching a handle to an end of an input shaft is common. In recent years, gearless hoisting machines have been mainstream, and for example, a method of operating by attaching a handle to the outer periphery of a rotating part is known as in International Publication No. 2004/000710. Further, as disclosed in Japanese Patent Application Laid-Open Nos. 2012-121699 and 2000-063063, a method is also known in which a rotating body is provided with a gear (a booster mechanism) to reduce the operating force.

  In addition, as a rescue means that does not operate the hoisting machine, there is also known a means for rescue by attaching a bracket to a main rope or a compen- sion rope and winding it with a winch or the like as disclosed in JP 2001-97648. It has been.

International Publication No. 2004/000710 JP 2012-121699 A JP 2000-063063 A JP 2001-097648 A

  As in International Publication No. 2004/000710, when an operation is performed with a handle attached to the outer peripheral portion of the rotating body, especially in a gearless hoisting machine, if the capacity of the elevator is increased, the required operating force also increases proportionally. On the other hand, the force that can be operated by humans is limited, and measures such as lengthening the lever are necessary for operation. For this reason, when the capacity of the elevator is increased, the lever becomes large and there is a problem that a realistic configuration cannot be achieved.

  As disclosed in Japanese Patent Application Laid-Open Nos. 2012-121699 and 2000-063063, there is known a mechanism that reduces operating force by providing a gear on the outer peripheral portion of a rotating portion. Although these mechanisms can reduce the operating force, when the required torque increases, it is necessary to increase the output torque by increasing the diameter of the small-diameter gear or providing a multistage reduction mechanism on the operating side. For this reason, when the capacity of the elevator is increased, there is a problem that the apparatus becomes larger and a realistic configuration cannot be achieved.

  On the other hand, as in Japanese Patent Application Laid-Open No. 2001-097648, in the rescue means for attaching a bracket or winch to the main rope or compen- sion rope and pulling the rope directly, the bracket is attached to the main rope or compen- When installing, it is necessary to access the bracket from the floor of the pit. However, as the capacity of the elevator increases, it becomes difficult to access the depth of the pit and the ropes in the hoistway.

  Also, when performing these operations, it is necessary to release the hoisting machine brake at the same time, but if no hoisting machine is installed in the pit, it is necessary to work while communicating at a remote location at the same time. Therefore, there is a problem that workability is not good.

  The present invention has been made in view of the above, and a method for manually driving an elevator hoisting machine capable of manually driving the hoisting machine with a compact and realistic configuration regardless of the capacity of the elevator. The purpose is to provide.

The present invention for achieving the above-described object includes a step of connecting one end of the lifting device to the building side of the elevator or a machine base, a step of connecting the other end of the lifting device to one end of the flexible body, A step of winding the flexible body around a sheave of an elevator hoist and a step of connecting the other end of the flexible body to the sheave are performed in random order, and the pulling device is operated. Thus, the elevator hoisting machine is manually driven by pulling the other end of the pulling device toward one end of the pulling device, thereby rotating the sheave.
Further, another aspect of the present invention for achieving the object is a lifting device having one end connected to an elevator construction side or a machine stand, and a flexible body wound around a sheave of an elevator hoist. An elevator having one end connected to the other end of the pulling device and the other end connected to the sheave, wherein the pulling device is a lever block (registered trademark) or a chain block. It is a manual drive device of a hoisting machine.

  According to the present invention, the hoisting machine can be manually driven with a compact and realistic configuration regardless of the capacity of the elevator.

It is a figure which shows an example of the elevator hoisting machine to which this invention is applied. It is a figure which shows Embodiment 1 of this invention when it sees from the arrow II of FIG. It is a figure explaining the connection aspect of a flexible body and a sheave regarding this Embodiment 1. FIG. It is a figure explaining the connection aspect of a flexible body and a sheave regarding this Embodiment 2. FIG. It is a figure explaining the connection aspect of a flexible body and a sheave regarding this Embodiment 3. FIG. It is a figure which shows the state which set the flexible body and the pulling-up apparatus with respect to the winding machine regarding this Embodiment 4. FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the drawings, the same reference numerals indicate the same or corresponding parts.

Embodiment 1 FIG.
FIG. 1 is a diagram showing an example of an elevator hoisting machine to which the present invention is applied. FIG. 2 is a diagram showing the first embodiment of the present invention as seen from the arrow II in FIG. FIG. 3 is a diagram illustrating a connection mode between the flexible body and the sheave according to the first embodiment.

  The elevator hoist 1 is mounted on the upper surface of a known machine base 3. The hoisting machine 1 includes a drive motor 5 and a sheave 7. The sheave 7 is fixed to the output shaft of the drive motor 5 and is rotationally driven by the drive motor 5. A brake disk 9 is attached to the sheave 7. Further, a known brake device 11 is combined with the brake disk 9.

  Further, a known wire rope (not shown) is wound around a winding surface 13 which is a cylindrical outer peripheral surface of the sheave 7. A known elevator car (not shown) is supported by the wire rope, and the elevator car ascends and descends when the wire rope is driven by the hoisting machine 1.

  A manual drive device 51 for an elevator hoist according to the first embodiment includes a pulling device 53 and a flexible body 55. One end 53 a of the pulling device 53 is connected to the building side 57 of the elevator. The flexible body 55 is wound around the winding surface 13 of the sheave 7. One end 55 a of the flexible body 55 is connected to the other end 53 b of the pulling device 53. The other end 55 b of the flexible body 55 is connected to the sheave 7.

  As will be described later, the pulling device 53 is not particularly limited as long as it can manually pull the other end 53b of the pulling device 53 toward the one end 53a (by human power). The pulling device 53 may be a lever block (registered trademark) or a chain block as a specific example.

  The flexible body 55 may be any member that can transmit tension and can bend or bend substantially following the winding surface 13 of the sheave 7 as described later. Is not questioned. For example, the flexible body 55 is a rope (including a sling).

  Next, a manual driving method of the elevator hoisting machine will be described. First, a first step of connecting one end 53a of the lifting device 53 to the building side 57 of the elevator, a second step of connecting the other end 53b of the lifting device 53 to one end 55a of the flexible body 55, and a flexible body The third step of winding 55 around the sheave 7 of the elevator hoist 1 and the fourth step of connecting the other end 55b of the flexible body 55 to the sheave 7 are executed in random order.

  As an example, one end of the rope is fixed to a fixing portion provided on the outer peripheral portion of the rotating body of the hoisting machine, and wound around the rotating body. Connect the other end of the wound rope and the fixed part of the structure on the building side with a pulling means such as a chain block.

  At this time, as the elevator construction side 57, a suspension point (structure fixing portion) 59 provided in advance on the elevator (ceiling or wall), such as a hook for hoisting a hoisting machine or a control panel or a suspension hand, is used. And fix. As a result, it is not necessary to provide a separate fixing portion, so that the installation time can be shortened. Also, when general-purpose fixed points are used. Since hooks, suspensions, etc. are always attached, there is no need to prepare a fixing point separately at the time of rescue.

  Moreover, as a more detailed example, the screwing hole 61 is provided in the winding surface 13 in the outer peripheral part of a sheave. An eyebolt 63 is fixed in the screw hole 61. The other end 55 b of the flexible body 55 is fixed to the eyebolt 63. In this example, some screw holes are provided in the outer peripheral portion of the rotating body to be wound, and the rope is easily fixed by attaching an eyebolt or the like. As a fixing mode, a hook portion may be provided on the other end 55b of the flexible body 55, and the hook may be hooked on the ring of the eyebolt 63, or the other end 55b of the flexible body 55 may be provided. May be connected to the ring of the eyebolt 63.

  Subsequently, after all the first to fourth steps described above are executed, the pulling device 53 is operated to pull the other end 53 b of the pulling device 53 toward the one end 53 a of the pulling device 53. Thereby, the flexible body 55 is pulled toward one end 53a of the pulling device 53 as indicated by an arrow T in the drawing, and the sheave 7 is further rotated as indicated by an arrow R in the drawing.

  As described above, according to the first embodiment, the hoisting machine can be manually driven with a compact and realistic configuration regardless of the capacity of the elevator. In particular, according to the first embodiment, when the elevator stops due to power loss or the like, the rope wound around the sheave is wound up by hoisting a chain block or the like as a rescue means by moving the car in an emergency. Rotate the sheaves manually, move the car to the nearest floor and rescue passengers in the car. In addition, this rescue method should be performed using a general hoisting machine structure, various hooks attached to the machine room, general ropes, chain blocks, etc., without using a special dedicated device. Can do.

  Further, for example, a sheave of the hoisting machine is provided with a cast hole for weight reduction and a screw hole for an eyebolt for hanging. The first embodiment is a method of using such a place. In addition, if a fixed part dedicated to this rescue method is provided on the hoisting machine or the construction side, it will be easier to operate.

  In the rescue means, the rope is wound around the outer edge of the sheave of the hoist. Since the rope of the hoisting machine has a rope hanging on the rope groove portion, there is nothing to interfere when winding the rope in the rescue means of the present invention, and the outer diameter is the largest and a large torque can be obtained. In the rotating part of other hoisting machines, the shaft has a small diameter, and the motor part has a stator arranged on a single circle on the outer periphery, so the rope cannot be pulled out to the structure side, and the brake rotor (disk) part has a brake. There are problems such as getting in the way. Therefore, the sheave is the most suitable place for carrying out the present invention as a place to apply manual driving force.

Embodiment 2. FIG.
Next, Embodiment 2 of the present invention will be described with reference to FIG. The second embodiment is the same as the first embodiment described above except for the contents described below. FIG. 4 is a diagram for explaining a connection mode between the flexible body and the sheave according to the second embodiment.

  In the second embodiment, the protrusion 165 is provided on the outer peripheral portion of the sheave 7. The other end 55 b of the flexible body 55 is fixed to the protrusion 165. As a fixing mode, the other end 55 b of the flexible body 55 may be hooked on the protrusion 165 or tied to the protrusion 165. As an example, a projection is provided in advance on the outer peripheral portion of the rotating body with a casting or the like, and attachment is facilitated by making it easy to hook a rope.

  According to the second embodiment, the same advantages as those of the first embodiment can be obtained. Further, in the second embodiment, there is an advantage that problems such as interference are less likely to occur because there are no protrusions compared to the first embodiment, and it is also possible to obtain effects such as weight reduction and reduction in material costs. .

Embodiment 3 FIG.
Next, Embodiment 3 of the present invention will be described with reference to FIG. In addition, this Embodiment 3 shall be the same as that of Embodiment 1 mentioned above except the content demonstrated below. FIG. 5 is a diagram for explaining a connection mode between the flexible body and the sheave according to the third embodiment.

  In the third embodiment, a plurality of through holes 267 are provided in the outer peripheral portion of the sheave 7, that is, in the winding surface 13 of the sheave 7. The other end of the flexible body 55 is inserted so as to sew into the plurality of through holes 267 and tied to the outer peripheral portion of the sheave 7. As an example, these through holes 267 are through parts such as cast holes.

  According to the third embodiment, the same advantages as those of the first embodiment can be obtained.

Embodiment 4 FIG.
Next, Embodiment 4 of the present invention will be described with reference to FIG. In addition, this Embodiment 4 shall be the same as that of any of Embodiment 1-3 mentioned above except the content demonstrated below. FIG. 6 is a diagram showing a state in which a flexible body and a pulling device are set with respect to the hoist according to the fourth embodiment.

  In the second embodiment, the flexible body 55 (rope) wound around the outer edge portion (winding surface) of the sheave 7 of the hoist 1 is linearly extended toward the machine table 3, and the machine table 3 A fixed portion is provided at a predetermined position. The machine base 3 supports the hoisting machine 1 via a vibration isolating rubber 3a.

  According to the fourth embodiment, the same advantages as any of the corresponding ones of the first to third embodiments can be obtained. In the fourth embodiment, since the machine base of the hoisting machine is a part of the elevator structure, it can be installed at an optimum position according to the convenience of the elevator apparatus regardless of the construction.

  Although the contents of the present invention have been specifically described with reference to the preferred embodiments, various modifications can be made by those skilled in the art based on the basic technical idea and teachings of the present invention. It is self-explanatory.

  The invention of the present application includes a combination of part or all of the configurations of any one or more of the embodiments described above with the other embodiments.

1 hoisting machine, 3 machine base, 7 sheaves, 51 manual drive device for elevator hoisting machine, 53
Pulling device, 55 flexible body, 57 building side of elevator, 63 eyebolt, 165 projection, 267 through hole.

Claims (7)

Connecting one end of the lifting device to the building side of the elevator or the machine platform;
Connecting the other end of the pulling device to one end of the flexible body;
Winding the flexible body around a sheave of an elevator hoist;
Connecting the other end of the flexible body to the sheave in random order,
Operating the pulling device to pull the other end of the pulling device towards one end of the pulling device, thereby rotating the sheave;
Manual drive method for elevator hoisting machine. The pulling device is a lever block (registered trademark) or a chain block.
A method for manually driving an elevator hoist according to claim 1. The flexible body includes a rope,
A method for manually driving an elevator hoist according to claim 1 or 2. The outer periphery of the sheave is provided with a screw hole,
An eyebolt is fixed to the screw hole,
The other end of the flexible body is fixed to the eyebolt.
The manual drive method of the elevator hoist according to any one of claims 1 to 3. The outer periphery of the sheave is provided with a protrusion,
The other end of the flexible body is fixed to the protrusion.
The manual drive method of the elevator hoist according to any one of claims 1 to 3. The outer periphery of the sheave is provided with a plurality of through holes,
The other end of the flexible body is inserted into the plurality of through holes and tied to the outer periphery of the sheave.
The manual drive method of the elevator hoist according to any one of claims 1 to 3. A lifting device whose one end is connected to the building side of the elevator or to the machine base
A flexible body wound around a sheave of an elevator hoisting machine, wherein one end is connected to the other end of the pulling device and the other end is connected to the sheave.
The pulling device is a lever block (registered trademark) or a chain block.
Manual drive device for elevator hoisting machine.

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