JP2019127384A - Elevator cargo having sheave cover, and elevator having the same - Google Patents

Abstract

To improve the safety of an elevator.SOLUTION: There is provided an elevator car that moves up and down in the hoistway when the main rope travels, comprising: car sheaves 232 and 233 on which the main rope travels; sheave covers 800 that cover at least a part of the car sheaves 232 and 233; and a disengagement prevention member 860 attached to the sheave cover 800 so that the main rope is not easily detached from the car sheaves 232 and 233.SELECTED DRAWING: Figure 6

Description

  The present invention relates to an elevator car including a sheave cover and an elevator including the same.

  In recent years, in the installation and maintenance of elevators, improvement of safety has been required so that workers can work safely.

  On the other hand, there is an elevator of a type in which a sheave (car sheave) is disposed on a car and a main rope travels the sheave to raise and lower the car.

  In this case, a worker who performs installation and maintenance of the elevator may get on the car and work, but there is a possibility that the worker may accidentally get caught in the sheave.

  Patent Document 1 describes a structure for supporting a sheave cover so that vibrations and noises generated by the contact between the car sheave and the hoisting rope (main rope) are not transmitted to the sheave cover and amplified.

JP 2007-84176 A

  On the other hand, from the viewpoint of earthquake resistance, it is required that the main rope is difficult to come off from the groove of the sheave.

  However, in order to prevent the main rope from coming off from the sheave, there is a problem that the number of parts increases when the anti-vibration mechanism is provided on the sheave.

  In addition, in order to provide the anti-sway member on the sheave, a space for arranging the anti-skid mechanism is required.

  And in the invention which concerns on patent document 1, nothing is mentioned about the steadying mechanism.

  The main object of the present invention is to improve the safety of the elevator.

  Another object of the present invention is to save space around the car.

An elevator car according to a first aspect of the present invention is an elevator car that moves up and down in a hoistway as a main rope travels,
A car sheave on which the main rope travels;
A sheave cover covering at least a portion of the car sheave;
An elevator car including an anti-release member attached to the sheave cover so that the main rope is not easily released from the car sheave.

  With such a thing, since the sheave cover is attached, the operator can not easily get caught in the car sheave, and can operate safely even when the car sheave is driven.

  Further, since the anti-disengagement member is attached to the sheave cover, the main rope can not be easily detached from the car sheave, and the safety of the elevator is improved.

  Moreover, since the detachment prevention member is attached to the sheave cover so that the main rope is not easily detached, space saving around the car can be achieved.

  The detachment prevention member is preferably arranged at a portion where the car sheave and the main rope come into contact with each other.

An elevator car according to a second aspect of the present invention is the elevator car according to the first aspect, wherein the sheave cover includes a lower cover portion that covers at least a part of the lower side of the car sheave. ,
It is a car for elevators by which the above-mentioned detachment prevention member is attached to the above-mentioned lower cover part.

  When the car sheave is attached to the upper part of the car, or attached to the lower part of the car, the main rope contacts the lower part of the car sheave in any case. Is preferably attached.

An elevator car according to a third aspect of the present invention is the elevator car according to the first aspect or the second aspect, and the car sheave includes a first car sheave and a second car sheave. ,
The sheave cover covers at least a portion of the side of the first car sheave, and a first outer cover portion disposed opposite to the second car sheave.
And a second outer cover portion covering at least a part of the second car sheave on the lateral side and disposed on the opposite side of the first car sheave.
In the elevator car, the disengagement prevention member is further attached to the first outer cover portion side and the second outer cover portion side.

  When a plurality of car sheaves are provided, the main rope contacts the outer portion of the car sheave. That is, the main rope contacts the car sheave at the outer cover portion side.

  Therefore, when the number of car sheaves is two (when the first car sheave and the second car sheave are provided), the anti-slip members are attached to the first outer cover portion side and the second outer cover portion side. Is preferred.

An elevator car according to a fourth aspect of the present invention is an elevator car according to a third aspect, and a first shaft attachment portion to which a rotation shaft of the first car sheave and the second car sheave is attached. And a second shaft mounting portion,
The first shaft mounting portion and the second shaft mounting portion are elevator cars that are part of the sheave cover.

  In order to rotate the car sheave, it is necessary to have a shaft mounting portion for rotatably mounting the rotation shaft of the car sheave. However, space saving can be achieved by making the shaft mounting portion a part of the sheave cover. it can.

An elevator car according to a fifth aspect of the present invention is an elevator car according to a fourth aspect, wherein the first outer cover part side and the second shaft attachment part and the second axle attachment part are second side. A detachment prevention member fixing part is provided on the outer cover side,
It is a car for elevators by which the said fall prevention member is attached to the said fall prevention member fixed part.

  By attaching the detachment prevention member fixing portion to the first shaft attachment portion and the second shaft attachment portion, it is possible to firmly prevent the main lobe from coming off the car sheave.

An elevator car according to a sixth aspect of the present invention is the elevator car according to the third to fifth aspects, wherein the sheave cover covers at least a part of the upper side of the car sheave. And
A first inner cover portion which covers at least a part of the side of the first car sheave, and which is disposed opposite to the first outer cover portion;
And a second inner cover portion covering at least a part of the side of the second car sheave and disposed on the opposite side to the second outer cover portion.

  If this is the case, the car sheave is covered with a sheave cover in its entirety or most of the part, so that even when the car sheave is driven, it is difficult for the operator to get caught in the car sheave and to work safely. be able to.

  An elevator according to a seventh aspect of the present invention is an elevator including the elevator car according to the first to sixth aspects.

  With such an elevator, the safety of the elevator is improved, and a worker can work safely at the time of maintenance or repair. Moreover, if it is such an elevator, space saving of a car periphery part can be achieved.

BRIEF DESCRIPTION OF THE DRAWINGS The perspective view of the general elevator which concerns on this embodiment. The side view schematic diagram of the general elevator which concerns on this embodiment. The front view of the car frame of the elevator which concerns on this embodiment. The side view of the car frame of the elevator which concerns on this embodiment. The upper surface top view of the car frame of the elevator which concerns on this embodiment. The front view of the car sheave and sheave cover of the elevator which concerns on this embodiment. Top plan view of the elevator car sheave and sheave cover according to the present embodiment The AA sectional view of the elevator car sheave and sheave cover concerning this embodiment. BB sectional drawing of the car sheave and sheave cover of the elevator which concerns on this embodiment.

  Hereinafter, embodiments of an elevator car provided with a sheave cover according to the present invention and an elevator provided with the same will be described with reference to the drawings.

(Elevator 100)
As shown in FIGS. 1 and 2, in the elevator 100, a hoisting machine 200 is installed at the lower part of the hoistway.

  One end portion of the main rope 220 wound around the drive sheave 210 of the hoisting machine 200 is fixed in the hoistway via the first car sheave 232 and the second car sheave 233 attached to the car 230. Yes.

  Also, the other end of the main rope 220 is fixed in the hoistway via a counterweight sheave 241 attached to the counterweight 240.

  When the drive sheave 210 is rotationally driven by the motor (not shown) of the hoisting machine 200, the main rope 220 travels accordingly. Then, the car 230 to which the first car sheave 232 and the second car sheave 233 are attached is guided by the car guide rail 300 to move up and down in the hoistway.

  Similarly, as the main rope 220 travels, the counterweight 240 to which the counterweight sheave 241 is attached is guided by the counterweight guide rail 242 and moves up and down in the hoistway.

  The direction of travel of the main rope 220 varies depending on the first sheave 211 and the second sheave 212.

  The elevator 100 is provided with a governor 400 that mechanically detects that the elevation speed of the car 230 exceeds a predetermined speed. An endless governor rope 600 is wound around the governor sheave 410 of the speed governor 400 and the tension sheave 500 located below the governor sheave 410.

  The governor rope 600 is stretched in tension in parallel with the main rope 220 by the tension sheave 500. A part of the governor rope 600 is fixed to a safety lever 250 for operating a safety gear 231 provided on the side of the car 230.

  For this reason, the governor rope 600 travels at the same speed as the car 230 in synchronization with the raising and lowering of the car 230. At this time, the speed governor 400 detects the rotational speed of the governor sheave 410, which is rotated at the same speed as the traveling speed of the governor rope 600, so that the speed exceeding of the cage 230 is detected.

  When the elevator speed of the car 230 reaches a first speed exceeding the rated speed (predetermined speed), a motor (not shown) constituting the hoisting machine 200 of the main rope 220 is braked.

  If the car 230 does not stop even when the motor (not shown) is braked, a movable grip (not shown) by the trip lever (not shown) of the governor sheave 410 is reached when the predetermined second speed exceeds the first speed. The support is released, and the travel of the governor rope 600 is stopped by the movable grip.

  Then, the safety lever 250 fixed to the governor rope 600 is pulled up by the governor rope 600 and pulled up relatively to the cage 230. As a result, the safety gear 231 operates and the car 230 stops.

  If the car 230 does not stop even when the safety gear 231 is activated, the car 230 collides with the first oil buffer 700a, which is the oil buffer 700 disposed below. The first oil buffer 700a absorbs the impact of the car 230 and stops the car 230.

  A second oil buffer 700b, which is an oil buffer 700, is also disposed below the counterweight 240. When the counterweight 240 falls, the second oil buffer 700 b absorbs the impact due to the drop of the counterweight 240 and stops the counterweight 240.

(Cage 230)
1 and 2, the first car sheave 232 and the second car sheave 233 are disposed below the car frame 234. However, as shown in FIGS. 3 to 5, in the car 230 of the present embodiment, It is disposed above the car frame 234.

The car 230 in the present embodiment includes an emergency stop device 231 (shown in FIG. 2) for emergency stop of the car 230,
A first car sheave 232 and a second car sheave 233 on which the main rope 220 is hung,
A car frame 234 to which the first car sheave 232 and the second car sheave 233 are attached;
And a car body (not shown) attached to the car frame 234.

  The emergency stop device 231 is for stopping the car 230 in an emergency. Specifically, it is as described above.

  The first car sheave 232 and the second car sheave 233 are where the main rope 220 is hung. Moreover, in the present embodiment, the first car sheave 232 and the second car sheave 233 are disposed above the car frame 234.

  As the main rope 220 travels on the first car sheave 232 and the second car sheave 233, the car frame 234 moves up and down along the car guide rail 300.

  As shown in FIGS. 3, 4 and 5, a first car sheave 232, a second car sheave 233, a car body (not shown) and a guide device (not shown) are attached to the car frame 234.

  In the present embodiment, the first car sheave 232 and the second car sheave 233 are arranged above the car frame 234, but are arranged below the car frame 234 as shown in FIGS. Also good.

  A car body (not shown) is attached to the car frame 234. The car body (not shown) is where people, luggage, etc. enter.

  The guide device (not shown) is a part that moves along the guide rail 300. As the guide device (not shown) moves on the guide rail 300, the car 230 moves up and down.

(Sheave cover 800)
As shown in FIGS. 6 to 9, a sheave cover 800 is attached to the first car sheave 232 and the second car sheave 233.

The sheave cover 800 includes a first shaft mounting portion 811 and a second shaft mounting portion 812 to which a rotation shaft to which the first car sheave 232 and the second car sheave 233 are attached is attached.
A lower cover portion 820 disposed below the first shaft mounting portion 811 and the second shaft mounting portion 812;
An upper cover portion 830 disposed above the first shaft mounting portion 811 and the second shaft mounting portion 812;
An outer cover portion 840 disposed between the lower cover portion 820 and the upper cover portion 830 and disposed on the outer side (y-axis direction side) of the first shaft mounting portion 811 and the second shaft mounting portion 812;
An inner cover portion 850 connected to the lower cover portion 820 and disposed laterally inside (y-axis direction side) of the first shaft attachment portion 811 and the second shaft attachment portion 812;
And a detachment prevention member 860 that is attached to the lower cover portion 820 and the outer cover portion 840 and prevents the main rope 220 from being detached from the first car sheave 232 and the second car sheave 233.

  The first shaft mounting portion 811 is disposed on the x axis positive direction side from the second shaft mounting portion 812.

  A first car sheave 232 and a second car sheave 233 are disposed between the first shaft mounting portion 811 and the second shaft mounting portion 812.

  The first shaft mounting portion 811 and the second shaft mounting portion 812 include a first rotating shaft 232 a that is a rotating shaft of the first car sheave 232 and a second rotating shaft 233 a that is a rotating shaft of the second car sheave 233. It is mounted for rotation.

  The first shaft attachment portion 811 and the second shaft attachment portion 812 and the car frame 234 are connected to the car frame 234 by bolts as connection members.

  The first shaft attachment portion 811 has a configuration in which both ends in the z-axis direction protrude in the x-axis positive direction in the xz plan view.

  The second shaft attachment portion 812 is configured such that both ends in the z-axis direction protrude in the x-axis negative direction side in the xz plan view.

  The first shaft attachment portion 811 and the second shaft attachment portion 812 cover substantially central and inner portions of the first car sheave 232 and the second car sheave 233 in the zy plan view.

  In other words, the first shaft mounting portion 811 and the second shaft mounting portion 812 include the central portion of the first car sheave 232 in the yz plan view and the y axis positive direction side, and the central portion of the second car sheave 233 in the yz plan view. Cover the y-axis negative direction side.

  The lower cover portion 820 is connected to the lower surfaces of the first shaft attachment portion 811 and the second shaft attachment portion 812.

  That is, the first lower cover portion 821 which is the lower cover portion 820 is connected to the lower surface of the first shaft attachment portion 811.

  Further, a second lower cover portion 822 which is a lower cover portion 820 is connected to the lower surface of the second shaft attachment portion 812.

  A first outer cover 841 which is an outer cover 840 extending in the positive z-axis direction is connected to an end of the first lower cover 821 in the negative y-axis direction.

  Similarly, a second outer cover 842 which is an outer cover 840 extending in the positive z-axis direction is connected to an end of the second lower cover 822 in the positive y-axis direction.

  A first inner cover portion 851 which is an inner cover portion 850 extending in the z-axis positive direction side is connected to an end of the first lower cover portion 821 on the y-axis positive direction side.

  Similarly, a second inner cover portion 852 which is an inner cover portion 850 extending in the positive z-axis direction is connected to an end of the second lower cover portion 822 in the negative y-axis direction.

  In the present embodiment, a gap is provided between the first lower cover 821 and the first inner cover 851.

  Similarly, a gap is provided between the second lower cover portion 822 and the second inner cover portion 852.

  Both ends in the x-axis direction of the first lower cover portion 821 extend in the z-axis positive direction side and cover the lower side of the first car sheave 232.

  Similarly, both ends in the x-axis direction of the second lower cover portion 822 extend in the z-axis positive direction side and cover the lower side of the second car sheave 233.

  On the bottom surfaces of the first lower cover portion 821 and the second lower cover portion 822, a detachment preventing member 860 is attached for preventing the main rope 220 from coming off. This will be described later.

  The upper cover portion 830 is connected to the upper surfaces of the first shaft mounting portion 811 and the second shaft mounting portion 812.

  That is, the first upper cover portion 831 which is the upper cover portion 830 is connected to the upper surface of the first shaft attachment portion 811.

  In addition, a second upper cover portion 832 which is an upper cover portion 830 is connected to the upper surface of the second shaft attachment portion 812.

  A first outer cover portion 841 is connected to an end portion of the first upper cover portion 831 on the negative y-axis direction side.

  Similarly, a second outer cover portion 842 is connected to an end of the second upper cover portion 832 on the y-axis positive direction side.

  A first through hole 833, which is a through hole through which the main rope 220 passes, is provided at the end of the first upper cover portion 831 in the negative y-axis direction.

  The first through hole 833 passes through the first upper cover portion 831 in the z-axis direction.

  Similarly, a second through hole 834, which is a through hole through which the main rope 220 passes, is provided at an end of the second upper cover portion 832 in the positive y-axis direction.

  The second through hole 834 passes through the second upper cover portion 832 in the z-axis direction.

  The outer cover part 840 is connected to the lower cover part 820 and the upper cover part 830.

  That is, the first outer cover portion 841 which is the outer cover portion 840 is the end portion of the first lower cover portion 821 in the negative y-axis direction and the end portion of the first upper cover portion 831 in the negative y-axis direction. Connected with.

  Similarly, the second outer cover portion 842 which is the outer cover portion 840 is connected to the end of the second lower cover portion 822 in the positive y-axis direction.

  Both ends in the x-axis direction of the first outer cover portion 841 extend in the y-axis positive direction side, and cover a part of the first car sheave 232 in the y-axis negative direction.

  Similarly, both ends in the x-axis direction of the second outer cover portion 842 extend in the y-axis negative direction side, and cover a part of the second car sheave 233 in the y-axis positive direction side.

  A window, which is a window, is formed between the y-axis positive direction end of the first outer cover 841 and the y-axis negative direction end of the first shaft attachment 811 and the second shaft attachment 812. A window portion 843 is provided.

  Similarly, a window is formed between the y-axis negative direction end of the second outer cover 842 and the y-axis positive direction end of the first shaft mounting portion 811 and the second shaft mounting portion 812. A second window 844 is provided.

  The operator can check whether the first car sheave 232 and the second car sheave 233 are driven by looking at the first window 843 or the second window 844.

  Inside the outer cover portion 840, a detachment prevention member 860 is attached for preventing the main rope 220 from coming off. This will be described later.

In the present embodiment, the inner cover portion 850 includes a first inner cover portion 851 connected to the y-axis positive direction side of the first lower cover portion 821;
A second inner cover part 852 connected to the y-axis negative direction side of the second lower cover part 822;
It includes a third inner cover 853 and a fourth inner cover 854 disposed between the first shaft attachment 811 and the second shaft attachment 812.

  The third inner cover portion 853 is disposed on the y-axis negative direction side of the fourth inner cover portion 854, and is disposed on the z-axis positive direction side of the first inner cover portion 851.

  Similarly, the fourth inner cover portion 854 is disposed on the z axis positive direction side from the second inner cover portion 852. The third inner cover portion 853 and the fourth inner cover portion 854 have a function of preventing the first axis attachment portion 811 and the second axis attachment portion 812 from opening in the x-axis direction.

  Therefore, the first car sheave 232 and the second car sheave 233 are formed by the first shaft attaching portion 811 and the second shaft attaching portion 812, the lower cover portion 820, the upper cover portion 830, the outer cover portion 840, and the inner cover portion 850. It is covered and it becomes difficult for a worker to be caught in the 1st car sheave 232 and the 2nd car sheave 233.

  That is, even when the worker performs maintenance or repair when the first car sheave 232 and the second car sheave 233 are driven, the worker is caught in the first car sheave 232 or the second car sheave 233. It's hard to get it.

(Drop prevention member 860)
On the bottom surface 823 of the lower cover portion 820, a detachment prevention member 860 is attached for preventing the main rope 220 from coming off.

  In the present embodiment, the detachment prevention member 860 is provided to both the first lower cover portion 821 and the second lower cover portion 822.

  Specifically, in the present embodiment, a first detachment prevention member 861 that is a detachment prevention member 860 is disposed below the first rotation shaft 232a of the first car sheave 232 (on the z axis negative direction side). Provided in the portion 821.

  Further, a second detachment preventing member 862 that is a detachment preventing member 860 is provided on the second lower cover portion 822 below the second rotating shaft 233a of the second car sheave 233 (on the z axis negative direction side).

  A first detachment prevention member fixing portion 871 which is a detachment prevention member fixing portion 870 to which a third detachment prevention member 863 is attached at the end on the y-axis negative direction side of the first shaft attachment portion 811 and the second shaft attachment portion 812. Is connected.

  In addition, a second anti-disengagement member is fixed as the anti-disengagement member fixing portion 870 to which the fourth anti-disengagement member 864 is attached to the end of the first shaft attachment portion 811 and the second axial attachment portion 812 The part 872 is connected.

  With such a configuration, the main rope 220 is less likely to be detached from the first car sheave 232 and the second car sheave 233. Therefore, the safety of elevator 100 can be improved.

  Moreover, since the detachment prevention member 860 is attached to the lower cover portion 820 and the outer cover 840 side, space saving is realized as compared with the conventional case.

  In the present embodiment, the first car sheave 232, the second car sheave 233, and the sheave cover 800 are arranged parallel to the y axis on the xy plane, but may be arranged obliquely on the xy plane. .

  Also, the first car sheave 232, the second car sheave 233, and the sheave cover 800 may be disposed parallel to the x axis on the xy plane.

  The present invention can be implemented in a mode in which various improvements, modifications, or variations are added without departing from the spirit of the present invention.

DESCRIPTION OF SYMBOLS 100 ... Elevator 200 ... Hoisting machine 220 ... Main rope 230 ... Car 232 ... First car sheave (car sheave)
233 ... Second basket sheave
300 ... Car guide rail 400 ... Speed governor 500 ... Tension sheave 600 ... Governor rope 700 ... Oil buffer 800 ... Sheave cover 811 ... First shaft mounting portion 812 ... Second shaft mounting portion 820 ... Lower cover portion 830 ... Upper cover portion 840 ... outer cover part 843 ... 1st window part (window part)
844 ... Second window (window)
850 ··· Inner cover 860 · · · · · · · · · · · · 870 · · · fixed part of the prevention member

Claims (7)

An elevator car for raising and lowering the inside of a hoistway by traveling of a main rope,
A car sheave on which the main rope travels;
A sheave cover covering at least a portion of the car sheave;
An elevator car including an anti-slip member attached to the sheave cover so that the main rope is not easily detached from the car sheave. The sheave cover includes a lower cover portion covering at least a portion of the lower side of the car sheave,
The elevator car according to claim 1, wherein the detachment preventing member is attached to the lower cover portion. The car sheave has a first car sheave and a second car sheave.
The sheave cover covers at least a portion of the side of the first car sheave, and a first outer cover portion disposed opposite to the second car sheave.
And a second outer cover portion covering at least a part of the second car sheave on the lateral side and disposed on the opposite side of the first car sheave.
The elevator car according to claim 1, wherein the detachment preventing member is further attached to the first outer cover portion side and the second outer cover portion side. A first shaft mounting portion and a second shaft mounting portion are provided to which the rotation shafts of the first car sheave and the second car sheave are mounted,
The elevator car according to claim 3, wherein the first shaft mounting portion and the second shaft mounting portion are part of the sheave cover. A detachment preventing member fixing portion is provided on the first outer cover portion side and the second outer cover portion side of the first shaft attachment portion and the second shaft attachment portion,
The elevator car according to claim 4, wherein the detachment prevention member is attached to the detachment prevention member fixing portion. An upper cover portion covering at least a part of the upper side of the car sheave;
A first inner cover portion that covers at least a part of the lateral side of the first car sheave and is disposed on the opposite side of the first outer cover portion;
The elevator car according to claim 3, 4 or 5, further comprising: a second inner cover portion covering at least a part of the side of the second car sheave and opposite to the second outer cover portion. . An elevator comprising the elevator car according to any one of claims 1 to 6.

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