JP4597658B2 - Speed detector mounting structure in elevator control renewal - Google Patents

Description

  The present invention relates to a speed detector mounting structure in control renewal of an elevator for newly mounting a speed detector on an existing hoisting machine.

  In recent years, elevators have made significant progress in performance as safe and comfortable transportation facilities. On the other hand, the importance of elevator equipment is increasing due to renovation and renewal work for aging elevators. This type of elevator renewal refers to the modifications and improvements required to make an existing elevator compatible with a new control system (hereinafter referred to as control renewal).

  There are two types of methods for renewing the control of existing elevators: First, the existing hoisting machine is replaced with a new hoisting machine together with the motor, and the control panel is also replaced. There is a second system in which the motor is replaced and the control panel is replaced, and a third system in which the existing hoisting machine including the motor is used as it is and the control panel is replaced.

  In these control renewals, the control panel corresponding to the recent new control method is replaced, and the speed detector such as a pulse generator or resolver suitable for the newly adopted control method is replaced at a minimum to detect the speed. There is a need to.

  When a new speed detector is replaced, there are few problems when replacing the motor as in the first and second methods, but a control renewal is performed to leave the existing motor as in the third method. If there is a problem.

  In other words, when using the installation location of the old speed detector used in the old control system for the existing hoisting machine and installing a new speed detector there, there is a difference in the speed detector mounting part and the new It is often not easy to install a speed detector.

  In addition, some existing old hoisting machines do not have speed detectors installed, and in this case, there is a problem that a new speed detector cannot be simply installed.

  On the other hand, it has been pointed out that even after a new speed detector is mounted, the speed detector mounting accuracy is poor due to manufacturing errors and mounting errors of mounting parts, resulting in a decrease in speed detection accuracy.

  Therefore, the object of the present invention is to solve the problems of the prior art, and to easily install a new speed detector without making complicated modifications on-site by using the existing hoisting machine as it is. An object of the present invention is to provide a speed detector mounting structure in the elevator control renewal.

  Another object of the present invention is to provide a speed detector mounting structure in the control renewal of an elevator in which a new speed detector can be mounted on an existing hoisting machine with high mounting accuracy.

In order to achieve the above object, the invention according to claim 1 is a structure in which a new speed detector is attached to a hoisting machine in the renewal of an elevator using an existing hoisting machine, The hoisting machine uses the extension shaft that also serves as a bearing nut that holds the bearing that supports the end portion of the rotating shaft and has an adapter portion that is screwed to the end portion of the rotating shaft. This is characterized in that a new speed detector is attached to the rotating shaft.

The invention according to claim 2 is characterized in that the extension shaft has a flexible coupling interposed between the shaft portion and the adapter portion.

According to a third aspect of the present invention, in the second aspect of the invention, the dummy extension shaft having the same shape as the combination of the shaft portion of the extension shaft and the flexible coupling, and the mounting position of the speed detector are fixed. fixing a base for, by, is characterized in that to constitute a jig temporarily determines the position of the speed detector.

  According to the inventions of claims 1 to 3, by using the extension shaft, the existing hoisting machine can be used as it is, and a new speed detector can be easily installed without complicated modifications on site. be able to.

  According to the invention of claim 4 or 5, even when combined with a flexible coupling that prevents shaft runout, a new speed detector can be attached to an existing hoisting machine with high attachment accuracy.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
First embodiment
FIG. 1 shows an existing hoisting machine to which a speed detector is replaced by applying the present invention. In FIG. 1, reference numeral 1 indicates a hoisting machine. The hoisting machine 1 is a conventional gearless type hoisting machine that does not include a reduction gear. Reference numeral 2 indicates a sheave and 3 indicates a brake mechanism.

  As shown in FIG. 1, the speed detector 4 (hereinafter referred to as the old speed detector 4) is originally installed in the hoisting machine body 5 and detects the old speed of the hoisting machine 1 by belt transmission. This is a belt transmission type that has been transmitted to the device 4.

  In the case of the hoisting machine 1, a sheave 2 around which a rope (not shown) is wound is attached to one end of the rotating shaft 6, and a pulley 7 is attached to the shaft end protruding from the hoisting machine body 5 at the other end of the rotating shaft 6. It has been. A pulley 8 is also attached to the rotating shaft of the old speed detector 4, and a belt 9 is wound around the pulleys 7 and 8.

  In the first embodiment, a new speed detector 12 corresponding to the control system of the control panel replaced by control renewal is attached to the rotary shaft 6 of the hoist 1 using an extension shaft 10 as shown in FIG. (See FIG. 5).

  In FIG. 2, the extension shaft 10 is a member in which a cup-shaped adapter portion 13 and a shaft portion 14 are integrally connected coaxially. As shown in FIG. 4, the adapter unit 13 is configured to be fitted to the shaft end from which the pulley 7 is removed from the rotating shaft 6 of the hoisting machine 1. A bolt hole 15 is formed in the adapter portion 13 so as to correspond to a plurality of bolt holes for fixing the pulley 7.

FIG. 5 shows a state in which the new speed detector 12 is attached using the extension shaft 10 as described above. In this case, if the new speed detector 12 is attached to the shaft portion 14 of the extension shaft 10 and fixed with the bolt 16, the new speed detector 12 can be attached. Preferably, as shown in FIG. 5, in order to maintain the mounting accuracy of the speed detector 12, a support base 17 is used.
Second embodiment
FIG. 6 shows an elevator hoisting machine to which the second embodiment of the present invention is applied. This second embodiment is an embodiment in which a new speed detector is attached to a hoisting machine of a type that does not have a speed detector.

  The hoisting machine 20 shown in FIG. 6 is a conventional gearless type hoisting machine that does not include a reduction gear, and this point is the same as the hoisting machine of FIG. Reference numeral 2 indicates a sheave and 3 indicates a brake mechanism.

  The difference from the hoist 1 of FIG. 1 is that the speed detector is not originally intended to be installed. In the second embodiment, the extension shaft 22 shown in FIG. 9 is used. FIG. 7 shows a state in which the new speed detector 12 is attached using the extension shaft 22.

  In FIG. 9, the extension shaft 22 is a member in which a cup-shaped adapter portion 24 and a shaft portion 14 are integrally connected coaxially. The shaft portion 14 is the same as the extension shaft 10 of FIG. As shown in FIG. 9, the inner peripheral surface of the adapter part 24 is threaded to form a female screw part 25.

  In FIG. 8, reference numeral 26 indicates a bearing that supports the rotating shaft 6 of the hoist 20. The bearing 26 is fixed by a bearing nut (not shown). For this reason, a male screw portion 27 into which the bearing nut is screwed is formed at the end of the rotating shaft 6 from the beginning. Therefore, in the extension shaft 22 of the present embodiment, the female screw portion 25 of the adapter portion 24 is screwed into the male screw portion 27 in place of the bearing nut.

  Therefore, after the adapter portion 24 of the extension shaft 22 is screwed into the male screw portion 27 of the rotating shaft 6 instead of the bearing nut, the new speed detector 12 is attached to the shaft portion 14 of the extension shaft 10 and the bolt 16 is used. If fixed, the new speed detector 12 can be easily attached as shown in FIG.

  Next, FIG. 10 shows a conventional hoisting machine to which the extension shaft 22 can be applied in the same manner. The hoisting machine 30 shown in FIG. 10 is a geared type hoisting machine provided with a reduction gear. Reference numeral 31 indicates a motor, and 32 is a brake mechanism. In this type of hoisting machine 30, as shown in FIG. 11, the new speed detector 12 can be attached to the rotating shaft 34 via the extension shaft 22 as follows.

  The bearing 26 that supports the rotary shaft 36 is fixed by a bearing nut (not shown) in the same manner as the hoisting machine shown in FIG. 6, and a male screw portion into which the bearing nut is screwed at the end of the rotary shaft 36. 38 is formed from the beginning. Therefore, when the bearing nut is removed from the rotating shaft 34 after removing the bearing cover, the extension shaft 22 can be attached. The subsequent steps are the same as in FIG.

Third embodiment
Next, a third embodiment of the present invention will be described with reference to FIGS.

  This third embodiment is a flexible coupling for absorbing shaft shake when a new speed detector 12 is attached to the rotary shaft of the hoisting machine shown in FIG. 6 of the second embodiment via an extension shaft 22. It is embodiment using.

  As shown in FIG. 12, the extension shaft 22 used in the third embodiment has a structure in which the shaft portion 14 is separated from the adapter portion 24, and a flexible cup is provided between the shaft portion 14 and the adapter portion 24. A ring 40 is provided. The point that the adapter part 24 of the extension shaft 22 also serves as a bearing nut is the same as in the second embodiment.

  In the third embodiment, a dummy extension shaft 42 and a fixing base 44 are used together with the extension shaft 22 to temporarily determine the mounting position of the new speed detector 12 as follows.

  As shown in FIG. 13, the dummy extension shaft 42 has a shape with exactly the same dimensions as the shape of the shaft portion 14 and the flexible coupling 40 combined. The dummy extension shaft 42 is formed with a female coupling portion 42 a that fits with the male coupling portion 24 a of the adapter portion 24.

  Therefore, after the adapter portion 24 is fastened to the male screw portion 27 at the shaft end of the rotary shaft 6 of the hoisting machine 20 in the same manner as in the second embodiment, the dummy extension shaft 42, the fixing base 44, and the new speed detector When assembled in the order of 12, the result is as shown in FIGS.

  In this temporarily assembled state, the dummy extension shaft 42 is precisely the same size as the shaft portion 14 of the regular extension shaft 22 and the flexible coupling 40, so the new speed detector 12 is used with the regular extension shaft 22. It is fixed with the same mounting accuracy as the mounted state. However, when the new speed detector 12 is attached from the beginning using the regular extension shaft 22 and the flexible coupling 40, the flexible coupling 40 is bent by the weight of the speed detector 12, and in this state, the fixed base 44 is attached. If fixed, it will be fixed in a state in which the mounting accuracy is very low. In this respect, the dummy extension shaft 42 has high rigidity and does not bend depending on the weight of the speed detector 12, so that the mounting accuracy can be maintained from the beginning.

  Next, as shown in FIG. 12, with the speed detector 12 fixed to the fixing base 44, the fixing base 44 is removed, and the dummy extension shaft 42 is replaced with the regular extension shaft 22 and the flexible coupling 40. In this case, what connected the axial part 14 and the flexible coupling 40 of the regular extension shaft 22 should just be replaced | exchanged for the dummy extension shaft 42 as it is.

  Thereafter, as shown in FIG. 16, the speed detector 12 may be attached to the lid member 46 together with the fixed base 44. Thereby, it is possible to reproduce the same mounting accuracy as in the temporarily determined state using the dummy extension shaft 42.

The side view which shows the hoisting machine of the elevator with which the speed detector mounting structure of the control renewal by 1st Embodiment of this invention is applied. The partial cross section side view of the extension shaft utilized for attachment of a new speed detector. The side view of the winding machine explaining attachment of the extension shaft of FIG. 2 to the rotating shaft of the winding machine of FIG. The figure which expands and shows the principal part of FIG. The enlarged view which shows the state which attached the new speed detector to the rotating shaft of the winding machine of FIG. The side view which shows the winding machine of the elevator with which the speed detector mounting structure of the control renewal by 2nd Embodiment of this invention is applied. The enlarged view which shows the state which attached the new speed detector to the rotating shaft of the winding machine of FIG. The enlarged view explaining attachment of an extension shaft to the rotating shaft of the hoisting machine of FIG. The partial cross section side view of the extension shaft used in 2nd Embodiment. The side view which shows the winding machine of the other type | formula of the elevator to which the speed detector mounting structure of the control renewal by 2nd Embodiment of this invention is applied. The enlarged view which shows the state which attached the new speed detector to the rotating shaft of the winding machine of FIG. The exploded view which shows the speed detector mounting structure of the control renewal by 3rd Embodiment of this invention. The partial cross section side view of the dummy extension shaft used in 3rd Embodiment. The exploded view which shows the order which attaches a new speed detector with a dummy extension shaft. The enlarged view which shows the state which attached the new speed detector with the dummy extension shaft. The enlarged view which shows the speed detector mounting structure of the control renewal by 3rd Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Hoisting machine 2 Sheave 3 Brake mechanism 4 Old speed detector 5 Hoisting machine main body 6 Rotating shaft 7 Pulley 8 Pulley 9 Belt 10 Extension shift 12 New speed detector 13 Adapter part 14 Shaft part 20 Hoisting machine 22 Extension shaft 24 Adapter part 25 Female thread part 27 Male thread part 30 Hoisting machine 40 Flexible coupling 42 Dummy extension shaft

Claims (3)

A structure in which a new speed detector is attached to a hoisting machine in an elevator control renewal using an existing hoisting machine,
Using the extension shaft that also serves as a bearing nut that holds a bearing that supports the end portion of the rotating shaft of the hoisting machine and has an adapter portion that is screwed to the end portion of the rotating shaft, via the extension shaft, A speed detector mounting structure in control renewal of an elevator, wherein a new speed detector is mounted on a rotating shaft of the hoisting machine. The speed detector mounting structure in the control renewal of an elevator according to claim 1 , wherein the extension shaft has a flexible coupling interposed between a shaft portion and an adapter portion. And dummy extension shaft having a shaft portion and same shape shape and a combination of a flexible coupling of the extension shaft, and fixing base for fixing the mounting position of the speed detector, by the position of the speed detector The speed detector mounting structure in the control renewal of the elevator according to claim 2 , wherein a jig for temporarily deciding the speed is configured.

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