JP7157872B2 - elevator equipment - Google Patents

Description

The present invention relates to an elevator system in which compensating cables such as compensating chains or compensating cables are suspended between a car and a counterweight, and to an elevator system capable of adjusting the suspension position of the compensating cables on the car side.

Conventionally, in an elevator system, a method of adjusting the suspension position of a compensating cable by means of a suspension mechanism at the bottom of a car has been known.
For example, Patent Document 1 discloses a car that ascends and descends in a hoistway, a counterweight that ascends and descends in the opposite direction of the car in the hoistway, a car connecting portion that is horizontally movably connected to the car, and a counterweight. A compensating body suspended in the hoistway from the car and the counterweight, having a counterweight connection connected to the counterweight, to cushion the impact of the collision of the car with the bottom of the hoistway. When the car shock absorber and the car reach the reference position at the bottom of the hoistway, the car connection is moved horizontally so that the retraction space set at the bottom of the hoistway when the car shock absorber is fully compressed. An elevator apparatus is disclosed that includes an interference prevention device that prevents a compensating body from interfering with the elevator.

WO2016/157535

2. Description of the Related Art Conventionally, an elevator apparatus is sometimes required to secure a retreat space in a pit of a hoistway. On the other hand, in order to reduce the unbalanced load on the car, the compensating cable is suspended from near the center of the bottom of the car, and there is a possibility that the compensating cable will enter the evacuation space set in the pit of the hoistway. .

However, in an elevator device equipped with an interference prevention device as described in Patent Document 1, since it is a structure in which the suspension position is horizontally moved when the car shock absorber is fully compressed, during maintenance and inspection work in the pit of the hoistway There was a problem that it was not possible to secure an evacuation space in

SUMMARY OF THE INVENTION Accordingly, the present invention provides an elevator apparatus capable of preventing a compensating cable from entering a retraction space in a pit of a hoistway.

In order to solve the above problems, the elevator apparatus according to the present invention includes a car that ascends and descends in a hoistway, a counterweight that ascends and descends in the hoistway in the opposite direction to the car, and one end of which is attached to the counterweight. A compensating cable that is connected to the lower part of the car and suspended by the other end being connected to the lower part of the car, a compensating cable supporting member that supports the other end side of the compensating cable, and a compensating cable supporting member that is movably supported. The compensating cable suspending position adjusting bracket has a plurality of adjusting recesses for engaging the compensating cable supporting member, and the compensating cable supporting member has one end of an elastic body fixed thereto. The other end of the elastic body is fixed above the adjustment recess, and one end of the elastic body is near the center of the car when the elastic body is at its natural length, and the adjustment recess is positioned at the bottom of the car. and has an R portion on the bottom surface of the elastic body on the side opposite to the fixed side to the car .

ADVANTAGE OF THE INVENTION According to this invention, the elevator apparatus which can prevent an intrusion of a compensating cable into the evacuation space in the pit of a hoistway can be provided.
Problems, configurations, and effects other than those described above will be clarified by the following description of the embodiments.

1 is a schematic configuration diagram of an elevator device of Example 1 according to one embodiment of the present invention; FIG. FIG. 2 is a front view showing the configuration of the compensating rope suspension position adjustment mechanism shown in FIG. 1 ; FIG. 2 is a top view showing the configuration of the compensating rope suspension position adjustment mechanism shown in FIG. 1 ; FIG. 2 is a front view showing a state of the elevator apparatus shown in FIG. 1 during normal operation; FIG. 2 is a front view showing a state of the elevator device shown in FIG. 1 during maintenance and inspection work; Fig. 10 is a front view showing the configuration of a compensating rope hanging position adjusting mechanism of Example 2 according to another example of the present invention; FIG. 11 is a front view showing the configuration of a compensating rope hanging position adjusting mechanism of Example 3 according to another example of the present invention; FIG. 11 is a top view showing the configuration of a compensating rope hanging position adjusting mechanism of Example 3 according to another example of the present invention;

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a schematic configuration diagram of an elevator device of Example 1 according to one embodiment of the present invention. As shown in FIG. 1, the main rope 1 is draped over the sheaves 2 and deflector sheaves 3 of the hoisting machine at the top of the elevator. The main rope 1 has one end connected to the top of the car 4 and the other end connected to the top of the counterweight 5 in the hoistway. The driving force of the hoist raises and lowers the car 4 along the guide rails 6 in the hoistway, and at the same time the counterweight 5 moves up and down in the hoistway in the direction opposite to the car 4 .

A part of the space inside the pit 100 of the hoistway is set as the evacuation space 7 . The evacuation space 7 is a rectangular parallelepiped space that guarantees the safety of workers during maintenance and inspection work inside the pit 100 .

The compensating cable 9 attached to the lower part of the car 4 via the compensating cable suspending position adjusting mechanism 8 has the other end connected to the lower part of the counterweight 5 . The compensating rope 9 is suspended from the lower part of the car 4 and the counterweight 5, and the weight ratio of the main rope 1 and the difference in the load applied to the car 4 due to the positional relationship between the car 4 and the counterweight 5 Compensate for the effects of The compensating cable suspension position adjustment mechanism 8 has a structure that can adjust the suspension position of the compensating cable 9 from the pit 100 in the hoistway, and the suspending position of the compensating cable 9 can be manually adjusted before maintenance and inspection work. Therefore, it is possible to prevent the compensating cable 9 from entering the evacuation space 7 at any car position.

FIG. 2 is a front view showing the structure of the compensating rope hanging position adjusting mechanism 8. As shown in FIG. As shown in FIG. 2, two fixing brackets 10 attached to the lower part of the car 4 are fixed with compensating cable suspension position adjusting brackets 11 bent into an L shape. The compensating cable suspending position adjusting bracket 11 includes a plurality of adjusting recesses 12a, 12b and 12c provided in the lower part of the car 4 at regular intervals to adjust the suspending position of the compensating cable 9, and the adjusting recess 12a. , the adjustment recess 12b and the adjustment recess 12c on the fixing side of the elastic body 15 have a crawl-up prevention member 20. As shown in FIG. The adjustment recesses 12a, 12b, and 12c each have an R portion on the bottom surface of the elastic body 15 on the non-fixed side, and have a hook-like structure.

Of the plurality of continuous adjusting recesses 12a, 12b, and 12c, the adjusting recess 12a closest to the center of the car 4 is the suspension position of the compensating cable 9 during normal elevator operation. During normal operation of the elevator, the compensating rope support member 13 is engaged with the adjusting recess 12a. Since the compensating cable chain portion 14 of the car-side end of the compensating cable 9 is fixed to the compensating cable supporting member 13, the compensating cable 9 is suspended from the compensating cable supporting member 13 as a fulcrum. The other end of 9 is connected to the counterweight. During maintenance and inspection work in the pit 100 of the hoistway, a worker pulls the compensating cable support member 13 horizontally through the compensating cable 9 and hooks it on the adjusting recess 12b or the adjusting recess 12c of the compensating cable hanging position adjusting bracket 11. By correcting it, it is possible to adjust the suspending position of the compensating cable 9 on the car side.

The compensating cable support member 13 has one end of the elastic body 15 arranged near the center of the car 4 . One end of the elastic body 15 is fixed. Therefore, by fixing the other end of the elastic body 15 to the lower part of the car 4 , the compensating rope support member 13 is always tensioned toward the center of the car 4 by the elastic body 15 . The tension of the elastic body 15 fixes the compensating rope supporting member 13 with the crawling prevention member 20 of the compensating rope suspension position adjusting bracket 11 and restricts the movement of the compensating rope supporting member 13. make it possible. In addition, as workers in the hoistway pit 100 pull the compensating cable 9 horizontally, the compensating cable support member 13 is pulled into the compensating cable suspension due to the tension above the adjustment recess 12 provided by the elastic body 15. It is possible to perform a sliding motion on the recessed surface R portion of the adjustment recess 12 of the position adjustment bracket 11 . Therefore, the detachment of the compensating cable supporting member 13 from the compensating cable suspending position adjusting bracket 11 is facilitated, and the manual operation of restoring the suspending position of the compensating cable 9 is facilitated. At this time, since the adjustment recesses 12 are arranged parallel to the bottom of the car 4, the moving path length of the compensating cable support member 13 is the shortest, and the tension of the elastic body 15 can be minimized.

Furthermore, the fixing height of the compensating cable supporting member 13 is fixed regardless of the suspending position by the plurality of adjusting recesses 12a, 12b, and 12c provided at the same height of the compensating cable suspension position adjusting bracket 11. Therefore, the compensating cable 9 is prevented from entering the bottom surface of the pit 100 of the hoistway and the evacuation space 7 .

FIG. 3 is a top view showing the configuration of the compensating rope hanging position adjusting mechanism 8 shown in FIG. As shown in FIG. 3 , two compensating cable suspending position adjusting brackets 11 are attached to two left and right fixing brackets 10 at intervals narrowed according to the dimensions of the compensating cable 9 . A compensating cable 9 is suspended from between the two compensating cable suspending position adjusting brackets 11 , and the other end of the compensating cable 9 is connected to the counterweight 5 .
The compensating cable support member 13 is supported at both ends by two compensating cable suspension position adjusting brackets 11 , and the compensating cable supporting member 13 is positioned between the two compensating cable suspension position adjusting brackets 11 toward the center of the car 4 . An elastic body 15 is connected to and tension is applied toward the center of the car 4 . In addition, the compensating cable support member 13 is provided with detents 16 at both ends of the member to prevent it from coming off the compensating cable suspension position adjusting bracket 11 . Furthermore, the length of the compensating cable support member 13 is shortened as the distance between the two compensating cable suspension position adjusting brackets 11 is shortened, and the tension to the compensating cable support member 13 is given by pulling the compensating cable 9 from within the pit 100 of the hoistway. Since the moment of the compensating rope support member 13 with respect to the force becomes small, the compensating rope support member 13 can be easily moved from within the pit 100 of the hoistway.

FIG. 4 is a front view showing the state of the elevator apparatus shown in FIG. 1 during normal operation. As shown in FIG. 4, during normal operation of the elevator system, the compensating cable suspension position adjusting bracket 11 attached to the car lower part 17 by the fixing bracket 10 is supported near the center of the car 4. The member 13 is fixed. At this time, the car lower part 17 refers to the entire bottom part of the car 4 including the compensating cable suspension position adjusting mechanism 8 . The compensating cable chain portion 14 of the compensating cable 9 is fixed to the compensating cable support member 13 , and hangs down into the pit 100 while entering the evacuation space 7 using the compensating cable support member 13 as a fulcrum. is connected to the counterweight 5 along the guide rail 6. At this time, by fixing different compensating cable chain portions 14 of the compensating cable 9 to the compensating cable support member 13, the suspension length of the compensating cable 9 can be adjusted.

A car-side compensating cable end fixing member 18 of the car lower part 17 is provided near the center of the car 4 of the compensating cable suspension position adjusting bracket 11 . The length of the compensating cable chain portion 14 between the compensating cable support member 13 and the car-side compensating cable end fixing member 18 is set by a worker during maintenance and inspection from the pit 100 of the hoistway to the position where the compensating cable 9 is suspended. Even when adjusting the , it has a margin to the extent that it is not stiff.

FIG. 5 is a front view showing a state of the elevator apparatus shown in FIG. 1 during maintenance and inspection work. As shown in FIG. 5 , the compensating rope support member 13 is pulled by a worker in the pit 100 of the hoistway via the compensating rope chain portion 14 of the compensating rope 9 , and is attached to the car lower part 17 . Since it slides on the hollow surface of the cable suspension position adjusting bracket 11, it leaves the adjustment recess 12a closest to the center of the car 4 and rides on the upper end surface of the compensating cable suspension position adjusting bracket 11. - 特許庁From this state, the worker in the pit 100 of the hoistway further pulls the compensating cable support member 13 via the compensating cable 9, so that the compensating cable supporting member 13 slides on the upper end surface of the compensating cable hanging position adjusting bracket 11. It moves and is hooked and fixed to the other adjustment recess 12c of the compensation cable suspension position adjustment bracket 11 . At this time, since the position of the car-side compensating cable end fixing member 18 does not change due to the change in the suspension position of the car-side compensating cable 9, the lower end of the compensating cable 9 is further bent, and the evacuation space of the compensating cable 9 is increased. It is connected to the lower part of the counterweight 5 along the guide rail 6 while avoiding intrusion into 7.

Further, when the maintenance and inspection work in the pit 100 of the hoistway is completed, by applying a tensile force to the compensating cable support member 13 via the compensating cable 9, the engagement between the compensating cable supporting member 13 and the adjustment recess 12c is released. Then, the compensating cable supporting member 13 is placed on the upper surface of the compensating cable suspending position adjusting bracket 11 . At this time, since the compensating cable support member 13 is tensioned by the elastic body 15 toward the center of the car 4, the elastic body 15 is made to return to its natural length by removing the tensile force on the compensating cable 9. The compensating rope support member 13 exerts an elastic force and naturally moves toward the center of the car 4 . Then, the worker in the hoistway pit 100 applies a tensile force to the compensating cable support member 13 via the compensating cable 9, thereby engaging the compensating cable supporting member 13 with the adjustment recess 12a, as shown in FIG. It is possible to return to the state during normal operation.

In this embodiment, in order to unify the height of the lower end of the compensating cable 9, the adjusting recess 12 of the compensating cable hanging position adjusting bracket 11 is provided so as to become higher as it moves away from the center of the car 4 in the horizontal direction. Also good. Also, in this embodiment, the adjustment recesses are provided at three locations, that is, the adjustment recesses 12a, 12b, and 12c.

As described above, according to this embodiment, it is possible to provide an elevator apparatus capable of preventing the compensating cable from entering the evacuation space in the pit of the hoistway.
Further, according to this embodiment, it is possible to manually adjust the suspending position of the compensating cable from within the pit of the hoistway during maintenance and inspection work in the pit of the hoistway.

FIG. 6 is a front view showing the configuration of a compensating rope hanging position adjusting mechanism of Example 2 according to another example of the present invention. In this embodiment, the suspension position change detection device 19a and the suspension position change detection device 19b are provided below the adjustment recess 12a, the adjustment recess 12b, and the adjustment recess 12c of the compensating cable suspension position adjustment bracket 11 attached by the fixing bracket 10. and a suspension position change detection device 19c. The rest of the configuration is the same as that of the above-described first embodiment, and hereinafter, the same constituent elements as those of the first embodiment are denoted by the same reference numerals, and redundant descriptions of the first embodiment will be omitted.

As shown in FIG. 6, a suspension position change detection device 19a, a suspension position change detection device 19b, and a suspension position change provided in the lower portions of the adjustment recess 12a, the adjustment recess 12b, and the adjustment recess 12c of the bracket 11 for adjusting the suspension position of the compensating cable. The detection device 19c has a push button. The suspension position change detection device 19a, the suspension position change detection device 19b, and the suspension position change detection device 19a, the suspension position change detection device 19b, and the suspension position change detection device 19a, 19b are adjusted to a position and height at which the lower end of the compensating rope support member 13 engaged with the adjustment recess 12a, the adjustment recess 12b, and the adjustment recess 12c can press the push button. The position change detection device 19c is fixed. The suspension position change detection device 19a, the suspension position change detection device 19b, or the suspension position change detection device 19c in the adjustment recess 12a, the adjustment recess 12b, or the lower part of the adjustment recess 12c in the state where the compensating rope support member 13 is fixed is an elastic body. 15, the push button is always pressed down, and the other push buttons of the suspension position change detection device 19a, the suspension position change detection device 19b, or the suspension position change detection device 19c are not pressed. As an example, when the push button of the suspension position change detection device 19a at the bottom of the adjustment recess 12a closest to the center of the car 4 is pressed, the compensating cable chain portion 14 is fixed so that the compensating cable 9 is in the normal suspension position. This is detected by the push button of the suspension position change detection device 19a, and the elevator device is enabled for normal operation. On the other hand, if the push button of the suspension position change detection device 19b or the suspension position change detection device 19c in the adjustment recess 12b or the lower part of the adjustment recess 12c is pressed when the suspension position of the compensating cable 9 is changed, the suspension position of the compensation cable 9 is changed. The change is detected by the push button of the suspension position change detection device 19b or the suspension position change detection device 19c, and the normal operation of the elevator device is disabled. As described above, it is possible to prevent the worker from forgetting to return the compensating cable 9 to the hanging position when the maintenance and inspection work is finished.

Although the adjustment depressions are provided at three locations, the adjustment depressions 12a, 12b, and 12c, the present invention is not limited to this, and the number of adjustment depressions may be provided as appropriate. The same applies to the suspension position change detection device.

As described above, according to the present embodiment, in addition to the effect of the first embodiment, it is possible to prevent the operator from forgetting to return the compensating cable 9 to the hanging position.

FIG. 7 is a front view showing the configuration of the compensating rope suspension position adjusting mechanism of Example 3 according to another embodiment of the present invention, and FIG. 8 shows the configuration of the compensating rope suspension position adjusting mechanism of Example 3. It is a top view. This embodiment differs from the first embodiment in that the compensating cable hanging position adjusting bracket 11 has a structure in which a hole is opened in a flat plate, and has an adjusting recess 12a and an adjusting recess 12b in the horizontal direction. The rest of the configuration is the same as that of the above-described first embodiment, and hereinafter, the same constituent elements as those of the first embodiment are denoted by the same reference numerals, and redundant descriptions of the first embodiment will be omitted.

As shown in FIGS. 7 and 8, the compensating rope support member 13 has a detent 16 at the top, which supports the compensating rope chain portion 14 of the compensating rope 9 and allows the compensating rope to be held in the adjustment recess 12a. It is engaged with the suspension position adjusting bracket 11 . The compensating cable support member 13 is connected to the elastic body 15 at the upper portion of the detent 16, and is tensioned in the recess direction of the adjustment recess 12a. During maintenance and inspection, a worker pulls the compensating cable support member 13 via the compensating cable 9, so that the compensating cable supporting member 13 leaves the adjustment recess 12a. When the compensating cable support member 13 is further pulled from this state, the compensating cable supporting member 13 is fixed in the adjustment recess 12b, and the hanging position of the compensating cable 9 can be adjusted. is connected to the lower part of the counterweight 5 along the guide rail 6 while avoiding the At this time, the workers in the pit 100 of the hoistway must apply a tensile force to the compensating cable 9 to produce a translational motion that overcomes the rotational motion due to the moment. In addition, the increase in the contact area between the compensating cable support member 13 and the compensating cable suspension position adjusting bracket 11 also increases the frictional force. On the other hand, it is possible to adjust the suspension position of the compensating cable 9 with a smaller number of parts than in the first embodiment.

Although the adjustment recesses are provided at two locations, the adjustment recesses 12a and the adjustment recesses 12b, the present invention is not limited to this, and the number of adjustment recesses may be provided as appropriate.

As described above, according to this embodiment, it is possible to adjust the hanging position of the compensating cable with a small number of parts.

In addition, the present invention is not limited to the above-described embodiments, and includes various modifications. For example, the above-described embodiments have been described in detail in order to explain the present invention in an easy-to-understand manner, and are not necessarily limited to those having all the described configurations. In addition, it is possible to replace part of the configuration of one embodiment with the configuration of another embodiment, and it is also possible to add the configuration of another embodiment to the configuration of one embodiment.

DESCRIPTION OF SYMBOLS 1... Main rope, 2... Sheave, 3... Deflector, 4... Car, 5... Counterweight, 6... Guide rail, 7... Retreat space, 8... Compensating cable suspending position adjustment mechanism, 9... Compensating cable, DESCRIPTION OF SYMBOLS 10... Fixing bracket 11... Compensating cable suspending position adjusting bracket 12a, 12b, 12c... Adjustment recess 13... Compensating cable supporting member 14... Compensating cable chain portion 15... Elastic body 16... Detachment stopper 17... Car lower part 18... Car side compensating cable end fixing member 19a, 19b, 19c... Suspension position change detection device 20... Climbing prevention member 100... Pit

Claims (7)

A car that ascends and descends in the hoistway,
a counterweight that raises and lowers the car in the hoistway in the opposite direction;
a compensating cable which has one end connected to the lower part of the counterweight and the other end connected to the lower part of the car to be suspended;
a compensating rope supporting member that supports the other end side of the compensating rope;
A compensating rope suspension position adjusting bracket that movably supports the compensating rope support member,
The compensating cable hanging position adjustment bracket has a plurality of adjustment recesses that engage the compensating cable support members,
One end of the elastic body is fixed to the compensating cable support member, and the other end of the elastic body is fixed above the adjustment recess. near the center,
The elevator apparatus , wherein the adjustment recess is provided in the lower part of the car, and has an R portion on the bottom surface on the side opposite to the fixing side of the elastic body to the car . The elevator apparatus according to claim 1, wherein
The elevator apparatus, wherein the plurality of adjustment depressions are arranged side by side at predetermined intervals. The elevator apparatus according to claim 1, wherein
The elevator apparatus, wherein the compensating cable hanging position adjusting bracket supports the compensating cable support member and has a crawl-up prevention member on the fixed side of the elastic body fixed above the adjustment recess. . In the elevator apparatus according to any one of claims 1 to 3,
The compensating cable suspension position adjusting bracket is provided at a lower portion of the adjustment recess and includes a suspension position change detection device for detecting the position of the compensating cable support member, which is the suspension position of the compensating cable. Device. An elevator apparatus according to claim 4, wherein
An elevator apparatus , wherein the compensating cable is supported by the compensating cable supporting member through a chain hole of a compensating cable chain portion provided at an end portion on the car side . In the elevator apparatus according to any one of claims 1 to 3 ,
The elevator system is characterized in that the adjusting recesses are recessed in a vertical direction, and the compensating cable supporting member is engaged with one adjusting recess to another adjusting recess by sliding on the R portion of the adjusting recess . In the elevator apparatus according to claim 1 or claim 2 ,
An elevator apparatus, wherein said adjustment recesses are horizontally recessed, and said compensating cable support member engages from one adjustment recess to another adjustment recess.

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