JP6733684B2 - Car for elevator having sheave cover and elevator having the same - Google Patents

Description

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

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

On the other hand, there is an elevator in which a sheave (car sheave) is arranged on a car, and a main rope runs on the sheave to elevate and lower the car.

In this case, an operator who installs and maintains the elevator may ride on the car to perform work, but there is a risk that the operator may be accidentally caught in the sheave.

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

JP, 2007-84176, A

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

However, if a swing stop mechanism is provided on the sheave in order to prevent the main rope from coming off the sheave, there is a problem that the number of parts increases.

Further, in order to provide the sheave member on the sheave, a space for arranging the shelter mechanism is required.

In addition, in the invention according to Patent Document 1, nothing is mentioned about the vibration-proof mechanism.

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

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 by traveling of a main rope,
A car sheave on which the main rope runs,
A sheave cover that covers at least a portion of the car sheave,
An elevator car including a detachment prevention member attached to the sheave cover so that the main rope is not easily detached from the car sheave.

In such a case, since the sheave cover is attached, it is difficult for an operator to be caught in the car sheave, and the worker can safely work even when the car sheave is driven.

Further, since the sheave cover is provided with the disengagement prevention member, it is difficult for the main rope to disengage from the car sheave, and the safety of the elevator is improved.

Further, since the detachment preventing member is attached to the sheave cover so that the main rope is not easily detached, it is possible to save the space around the car.

The disengagement 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 a lower side of the car sheave. ,
It is an elevator car in which the detachment prevention member is attached to the lower cover portion.

When the car sheave is attached to the top of the car or the bottom of the car, the main rope comes into contact with the bottom of the car sheave in any case. Is preferably attached.

An elevator car according to a third aspect of the present invention is an elevator car according to the first aspect or the second aspect, wherein the car sheave has a first car sheave and a second car sheave. ,
The sheave cover covers at least a part of a lateral side of the first car sheave, and a first outer cover portion arranged on a side opposite to the second car sheave,
A second outer cover portion that covers at least a part of a lateral side of the second car sheave and that is disposed on a side opposite to the first car sheave,
It is an elevator car in which the detachment prevention member is further attached to the first outer cover portion side and the second outer cover portion side.

When multiple car sheaves are provided, the main rope contacts the outer part of the car sheave. That is, the main rope contacts the car sheave on the outer cover side.

Therefore, when the number of car sheaves is 2 (when the first car sheave and the second car sheave are provided), the disengagement prevention member is attached to the first outer cover part side and the second outer cover part side. Is preferred.

An elevator car according to a fourth aspect of the present invention is an elevator car according to the third aspect, wherein a first shaft mounting portion to which rotary shafts of the first car sheave and the second car sheave are mounted. And a second shaft mounting portion are provided,
The first shaft mounting portion and the second shaft mounting portion are elevator cages that are a part of the sheave cover.

In order to rotate the car sheave, it is necessary to have a shaft mounting part that rotatably mounts the rotation shaft of the car sheave. By using the shaft mounting part as a part of the sheave cover, space saving can be achieved. it can.

An elevator car according to a fifth aspect of the present invention is the elevator car according to the fourth aspect, wherein the first outer cover portion side and the second outer shaft portion of the first shaft mounting portion and the second shaft mounting portion are provided. A detachment prevention member fixing portion is provided on the outer cover portion side,
The elevator cage has the detachment prevention member fixed to the detachment prevention member fixing portion.

By attaching the detachment prevention member fixing portion to the first shaft attaching portion and the second shaft attaching portion, it is possible to securely 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. Department,
A first inner cover portion that covers at least a part of a lateral side of the first car sheave and that is arranged on a side opposite to the first outer cover portion;
An elevator car including a second inner cover portion that covers at least a part of a lateral side of the second car sheave and that is disposed on a side opposite to the second outer cover portion.

In such a case, since the car sheave is covered with the sheave cover in whole or almost all, it is difficult for the operator to get caught in the car sheave even when the car sheave is driven, and 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 aspect to the sixth aspect.

With such an elevator, the safety of the elevator is improved, and the worker can safely work during maintenance and repair. Further, with such an elevator, it is possible to save the space around the car.

The perspective view of the general elevator concerning this embodiment. The side view schematic diagram of the general elevator concerning this embodiment. The front view of the car frame of the elevator which concerns on this embodiment. The side view of the cage frame of the elevator concerning this embodiment. The top surface top view of the cage 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. The top view of the car sheave and sheave cover of the elevator which concerns on this embodiment. The AA sectional view of the car sheave and sheave cover of the elevator which concerns on this embodiment. The BB sectional view of the car sheave and sheave cover of the elevator which concerns on this embodiment.

Hereinafter, embodiments of an elevator car including a sheave cover and an elevator including the same according to the present invention 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 below the hoistway.

One end 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. There is.

Further, 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, along with this, 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 to move up and down in the hoistway.

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

The elevator 100 is provided with a speed governor 400 that mechanically detects that the ascending/descending speed of the car 230 exceeds a predetermined speed. An endless governor rope 600 is wound between 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 by the tension sheave 500 while being tensioned in parallel with the main rope 220. A part of the governor rope 600 is fixed to an emergency stop lever 250 which operates an emergency stop device 231 provided on the car 230 side.

Therefore, 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 rotation speed of the governor sheave 410 rotated at the same speed as the traveling speed of the governor rope 600, so that the speed excess of the car 230 moving up and down is detected.

When the ascending/descending speed of the car 230 reaches the first speed exceeding the rated speed (predetermined speed), the motor (not shown) that constitutes the hoisting machine 200 of the main rope 220 is braked.

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

Then, the emergency stop lever 250 fixed to the governor rope 600 is pulled by the governor rope 600, and is pulled up relative to the car 230. As a result, the safety device 231 operates and the car 230 stops.

If the car 230 does not stop even when the safety device 231 operates, the car 230 collides with the first oil buffer 700a, which is the oil buffer 700 arranged 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 the oil buffer 700, is also arranged below the counterweight 240. When the counterweight 240 falls, the second oil buffer 700b absorbs the impact of the counterweight 240 falling and stops the counterweight 240.

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

The car 230 in the present embodiment includes an emergency stop device 231 (illustrated in FIG. 2) for stopping the car 230 in an emergency.
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 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. Further, in the present embodiment, the first car sheave 232 and the second car sheave 233 are arranged above the car frame 234.

As the main rope 220 travels through 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. 1 and 2. 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. The cage 230 moves up and down as a guide device (not shown) moves on the guide rail 300.

(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 rotary shaft to which the first car sheave 232 and the second car sheave 233 are mounted is mounted.
A lower cover portion 820 arranged below the first shaft mounting portion 811 and the second shaft mounting portion 812;
An upper cover portion 830 arranged above the first shaft mounting portion 811 and the second shaft mounting portion 812;
An outer cover portion 840 arranged between the lower cover portion 820 and the upper cover portion 830 and arranged 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 part 850 that is connected to the lower cover part 820 and that is arranged on the inner side (y-axis direction side) of the first shaft mounting part 811 and the second shaft mounting part 812;
And a disengagement prevention member 860 that is attached to the lower cover portion 820 and the outer cover portion 840 and that prevents the main rope 220 from being disengaged from the first car sheave 232 and the second car sheave 233.

The first shaft mounting portion 811 is arranged on the x-axis positive direction side of the second shaft mounting portion 812.

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

The first shaft attaching portion 811 and the second shaft attaching portion 812 are provided with a first rotating shaft 232a which is a rotating shaft of the first car sheave 232 and a second rotating shaft 233a which is a rotating shaft of the second car sheave 233. It is rotatably mounted.

The first shaft mounting portion 811, the second shaft mounting portion 812, and the car frame 234 are connected to the car frame 234 by bolts that are connecting members.

The first shaft attachment portion 811 is configured such that both ends in the z-axis direction protrude toward the x-axis positive direction side in the xz plan view.

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

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

That is, the first shaft mounting portion 811 and the second shaft mounting portion 812 are the center portion of the first car sheave 232 in the yz plane view and the y-axis positive direction side, and the center portion of the second car sheave 233 in the yz plane view and and the y-axis negative direction side.

The lower cover part 820 is connected to the lower surfaces of the first shaft mounting part 811 and the second shaft mounting part 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.

A second lower cover portion 822, which is the lower cover portion 820, is connected to the lower surface of the second shaft mounting portion 812.

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

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

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

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

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

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

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

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

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

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

Further, the second upper cover portion 832, which is the upper cover portion 830, is connected to the upper surface of the second shaft attachment portion 812.

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

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

A first through hole 833, which is a through hole for the main rope 220 to pass through, is provided at an end portion of the first upper cover portion 831 on the y-axis negative direction side.

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

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

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

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

That is, the first outer cover portion 841 that is the outer cover portion 840 includes the end portion of the first lower cover portion 821 on the y-axis negative direction side and the end portion of the first upper cover portion 831 on the y-axis negative direction side. 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 on the y-axis positive direction side.

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

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

A window portion is provided between the end portion on the y-axis positive direction side of the first outer cover portion 841 and the end portions on the y-axis negative direction side of the first shaft mounting portion 811 and the second shaft mounting portion 812. One window portion 843 is provided.

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

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

A detachment prevention member 860 for preventing the main rope 220 from detaching is attached to the inside of the outer cover portion 840. 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 portion 853 and a fourth inner cover portion 854 arranged between the first shaft mounting portion 811 and the second shaft mounting portion 812.

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

Similarly, the fourth inner cover portion 854 is arranged on the z-axis positive direction side of 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 shaft mounting portion 811 and the second shaft mounting 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 mounting portion 811, the second shaft mounting portion 812, the lower cover portion 820, the upper cover portion 830, the outer cover portion 840, and the inner cover portion 850. Since it is covered, it is difficult for an operator to be caught in the first car sheave 232 and the second car sheave 233.

That is, even when the worker performs maintenance or repair while 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 is hard to get rid of.

(Disengagement prevention member 860)
A detachment prevention member 860 for preventing the main rope 220 from detaching is attached to the bottom surface 823 of the lower cover portion 820.

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

Specifically, in the present embodiment, the first disengagement prevention member 861 serving as the disengagement prevention member 860 is provided below the first rotation shaft 232a of the first car sheave 232 (on the negative side in the z-axis direction). It is provided in the part 821.

Further, below the second rotating shaft 233a of the second car sheave 233 (on the negative side of the z-axis), a second disengagement prevention member 862, which is a disengagement prevention member 860, is provided in the second lower cover portion 822.

A first detachment prevention member fixing portion 871 is a detachment prevention member fixing portion 870 to which a third detachment preventing member 863 is attached, at ends of the first shaft attaching portion 811 and the second shaft attaching portion 812 on the y axis negative direction side. Are connected.

Further, at the y-axis positive direction side end portions of the first shaft attachment portion 811 and the second shaft attachment portion 812, the second removal prevention member fixing portion 870 to which the fourth removal prevention member 864 is attached is the second removal prevention member fixing portion 870. The part 872 is connected.

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

Further, 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. ..

Further, the first car sheave 232, the second car sheave 233, and the sheave cover 800 may be arranged in parallel with 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.

100... Elevator 200... Hoisting machine 220... Main rope 230... Car 232... First car sheave (car sheave)
233...Second car sheave (car sheave)
300... Car guide rail 400... Governor 500... Tension sheave 600... Governor rope 700... Oil buffer 800... Sheave cover 811... First shaft mounting part 812... Second shaft mounting part 820... Lower cover part 830... Upper cover part 840... Outer cover portion 843... First window portion (window portion)
844... Second window portion (window portion)
850... Inner cover part 860... Removal prevention member 870... Removal prevention member fixing part

Claims (7)

An elevator car that moves up and down in the hoistway as the main rope travels,
A car sheave on which the main rope runs,
A sheave cover that covers at least a portion of the car sheave,
The As from the car sheaves hardly disconnected the main rope, see containing and a detachment prevention member attached to said sheave cover,
The car sheave has a first car sheave and a second car sheave,
The sheave cover is a lower cover portion that covers at least a part of the lower side of the car sheave,
A first outer cover portion which covers at least a part of the lateral side of the first car sheave and is arranged on the opposite side of the second car sheave with respect to the first car sheave;
A second outer cover portion that covers at least a part of a lateral side of the second car sheave, and is arranged on the opposite side of the first car sheave with respect to the second car sheave;
A first shaft mounting part and a second shaft mounting part to which rotary shafts of the first car sheave and the second car sheave are mounted;
A first window portion provided between the first outer cover portion and the first shaft mounting portion;
A second window portion provided between the second outer cover portion and the second shaft attachment portion,
The first shaft mounting portion and the second shaft mounting portion are a part of the sheave cover,
The detachment prevention member is attached to the lower cover portion, the first outer cover portion side, and the second outer cover portion side,
An elevator car capable of confirming that the first car sheave is driven in the first window portion and that the second car sheave is driven in the second window portion . The sheave cover includes an upper cover portion that covers at least a part of an upper side of the car sheave,
The upper cover portion includes a first upper cover portion connected to an upper surface of the first shaft mounting portion, and a second upper cover portion connected to an upper surface of the second shaft mounting portion,
The lower cover portion has a first lower cover portion connected to a lower surface of the first shaft mounting portion and a second lower cover portion connected to a lower surface of the second shaft mounting portion. ,
The first outer cover portion is not connected to the first shaft mounting portion and the second shaft mounting portion, but is connected to the first upper cover portion and the first lower cover portion,
The second outer cover part is not connected to the first shaft mounting part and the second shaft mounting part, but is connected to the second upper cover part and the second lower cover part. Elevator car. By the first upper cover part, the first outer cover part, the first lower cover part, and the first shaft mounting part or the second shaft mounting part, the axial direction of the rotation shaft of the first car sheave Cover the side of the first car sheave,
By the second upper cover part, the second outer cover part, the second lower cover part, and the first shaft mounting part or the second shaft mounting part, in the axial direction of the rotation shaft of the second car sheave. The elevator car according to claim 1 or 2, which covers a surface of the second car sheave. Detachment prevention member fixing parts are attached to the first outer cover part side and the second outer cover part side of the first shaft attaching part and the second shaft attaching part,
The detachment prevention member fixing portion is not connected to the first outer cover portion and the second outer cover portion,
The elevator cage according to claim 1, 2 or 3, wherein the removal prevention member is attached to the removal prevention member fixing portion. The sheave cover includes an inner cover portion,
The inner cover portion is
A first inner cover portion that covers at least a part of the lateral side of the first car sheave, and is arranged on the opposite side of the first outer cover portion with respect to the first car sheave ;
Covers at least a portion of the lateral side of the second cage sheaves, claim 1 having said second car sheaves the second outer cover portions relative to includes a second inner cover portion disposed on the opposite side, the The elevator car according to any one of items 1 to 4 . The inner cover portion covers at least a part of a lateral side of the first car sheave, is arranged on a side opposite to the first outer cover portion with respect to the first car sheave, and is provided with the first shaft attachment portion. A third inner cover portion arranged between the second shaft attachment portion and
It covers at least a part of a lateral side of the second car sheave, and is arranged on the side opposite to the second outer cover part with respect to the second car sheave, the first shaft mounting part and the second shaft mounting part. The elevator car according to claim 5, further comprising a fourth inner cover portion disposed between the elevator car and the fourth inner cover portion. An elevator comprising the elevator car according to any one of claims 1 to 6.

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