JP2009113914A - Emergency stop device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To further reduce a pit dimension in a machine room-less elevator. <P>SOLUTION: When mounting a guide shoe 10 in a lower part of a car, the guide shoe 10 is mounted to be savable in a gap between a braking element 4a of this emergency stop device and a rail 9. The guide shoe 10 is provided with a sliding guide shoe material 10, a frame plate 10j, receiving metal 10b and a link mechanism 10a. The link mechanism 10a is linked by an emergency stop operation lever 8c and a connecting link 11. At an emergency stop operation, the guide shoe 10 is saved from the gap between the braking element 4a and the rail 9. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

The present invention is a technique of incorporating an elevator car guide shoe into an emergency stop device.

Recently, machine room-less elevators do not require a machine room, and the number of hoistway pits and the top gap are small, so the number of machines is increasing.

Japanese Utility Model Publication No. 1-12059

Japanese Patent Application Laid-Open No. 2003-228561 discloses a general elevator guide shoe arrangement, which is attached to the upper surface of the upper beam of the car frame at the upper part of the car and to the lower surface of the lower frame of the car frame at the lower part of the car.
This is shown in FIG. 22 of the present paper, and the relationship between the elevator car cage frame and the guide shoe is shown in a perspective view. FIG. 23 is a side view showing the relationship between the lower part of the car frame and the guide shoe of FIG.
Conventionally, a method in which guide shoes are arranged above and below the car is employed.

However, if an attempt is made to place the guide shoe near the lower frame, there is an emergency stop device inside the lower frame and the guide shoe cannot be attached. For this reason, since it is attached below the lower frame, there is a problem that the dimension below the lower end of the car frame becomes longer and the pit depth has to be increased.

The present invention has been made in order to reduce the pit size, and is incorporated in an emergency stop device in which a guide shoe at the lower part of the car frame is arranged in the car frame lower frame.

Since the guide shoe does not protrude under the lower frame, the pit size can be reduced.

Embodiment 1 FIG.
1 is a perspective view showing the relationship between a car frame and a guide shoe according to Embodiment 1, FIG. 2 is a side view of the lower part of the car frame in FIG. 1, FIG. 3 is an emergency stop plan view, and FIG. 4 is a side view of FIG. 5 is a perspective perspective view of FIGS. 3 and 4, FIG. 6 is a front view and a side view of the emergency stop in a normal elevator state, FIG. 7 is a view of the emergency stop in FIG. 7 is a state in which the emergency stop in FIG. 7 is completed, FIG. 9 is an exploded perspective view of FIG. 5, and FIG. 10 is a plan view of the main part of the emergency stop in the elevator normal state (detailed view of the emergency stop portion in FIG. 6). FIGS. 11 and 11 are views of the emergency stop of FIG. 10 in a state where the operation is completed (partial detail view of the emergency stop in FIG. 8).

In the figure, 1 is a car, 2 is a car frame upper beam, 3 is a car frame column, 4 is a car frame lower beam, 4a is an emergency brake, 4b is a roller, 4c is a presser foot, 4d is a clamp, 4e is Axis, 4f is a spring, 4h is a connecting plate, 4j is a presser nut, 5 is a floor support frame, 6 is a car floor, 7 is a car door, 8 is an emergency stop pull bar, 8a is a shaft, 8b is a lift lever 8c is an emergency stop operating lever, 8d is a pin, 8e is a connecting lever, 8f is a connecting rod, 9 is a guide rail, 9a is a governor rope, 10 is a guide shoe, 10a is a link mechanism, 10b and 10c are receiving plates, 10d Is a pin, 10e is a fitting, 10f is a positioning flange, 10j is a frame plate, and 11 is a connection link.

In this example, a guide shoe is incorporated in an emergency stop device in which a clamp 4d of the emergency stop device is pivotally supported and supported by a spring.
The clearance between the brake element 4a of the emergency stop device and the rail 9 is 5 to 7 mm in a normal elevator. Here, the guide shoe 10 and the frame plate 10j are combined to provide a guide shoe 10 formed in three sides with a thickness of about 5 to 7 mm, and the back receiving plates 10b and 10c are supported by the link mechanism 10a, and the emergency stop shaft 4e is provided with a cylinder. The guide shoe was attached with the attachment metal 10e.
The link mechanism 10a is connected to the emergency stop operating lever 8c by the connecting link 11, and the guide shoe 10 is fitted to the rail and the outside is fitted to the emergency stop brake 4a in the normal elevator, and the flange 10f of the positioning member at the upper end of the guide shoe is connected to the brake. The top and bottom positions were fixed by hanging on.
As a result, the elevator is guided by the guide shoe integrated with the brake element of the emergency stop device during normal elevator operation.

When the elevator becomes an abnormal speed and the emergency stop device starts to operate due to the action of the speed governor (not shown), the emergency stop operating lever 8c starts to rotate. At this time, the action of the connecting link 11 connected to the operating lever 8c and the link mechanism 10a causes the guide shoe 10 to move from the emergency stop brake 4a to the back and retract.
The guide shoe is retracted from the rail 9 with less than half of the movement of the emergency stop operating lever until the completion of the emergency stop operation, the emergency stop brake 4a starts to grip the guide rail 9, and the emergency stop operating lever further rotates. The braking force of the brake is increased, the emergency stop device is fully activated, and the elevator stops.

As described above, since the guide shoe does not protrude under the lower frame of the car frame (also serving as the emergency stop frame) as described above, the pit size can be reduced, and the guide shoe can be used during the emergency stop operation. Is rotated and retracted from the emergency stop brake 4a so that the emergency stop operation is not hindered.
Since the position of the lower guide shoe is close to the car floor, the force against the couple applied to the car becomes weaker, so it is desirable to increase the rail contact area by that amount than the car upper guide shoe.

Embodiment 2. FIG.
In the second embodiment, an example in which the guide shoe is incorporated in the clamp of the emergency safety device which is integrally formed with a horseshoe spring will be described.
12 is a perspective view showing the relationship between the safety device and the guide shoe according to the second embodiment, FIG. 13 is a side view of FIG. 12, FIG. 14 is a plan view of FIG. 12, and FIG. FIG. In the figure, reference numeral 12 denotes a horseshoe-shaped spring clamp, 13 and 13a are mounting plates, and 13b is a mounting bolt.
There is a horseshoe spring 12 integrally formed on the back surface of the support link of the guide shoe. Two pieces of metal fittings 13 and 13a are sandwiched between the horseshoe springs by bolts 13b, and the guide shoe is supported by a link mechanism.

Since other operations are the same as those in the first embodiment, description thereof will be omitted.
Since the safety device is integrally formed with a horseshoe-shaped spring, the device can be accommodated in a compact manner, and the same operation and effect as in the previous section can be obtained.

Embodiment 3 FIG.
In the third embodiment, an example in which a guide shoe is incorporated in an early emergency stop device will be described.
16 is a perspective view showing the relationship between the emergency stop device and the guide shoe according to the third embodiment, FIG. 17 is a plan view of FIG. 16, FIG. 18 is a front view of FIG. FIG. 20 is a front view of the state where the device starts to operate, FIG. 20 is a view of the state where the emergency stop operating roller hits the rail, and the state of the emergency stop device starts working. FIG.
In the figure, 14 is an emergency stop block, 14a is a connecting shaft, 14b is an emergency stop operating lever, 14c is an emergency stop operating roller, 14d is a bearing fitting, 15 is a support link, 16 is a guide shoe, 16a pin bearing, and 16b is a frame. It is a board.

The emergency stop operating lever 14b and the guide shoe 16 are connected by the link device 15 so that the guide shoe having a frame plate attached to the shoe is positioned in the gap between the emergency stop block and the rail.
Thus, during normal elevator operation, the guide shoe 16 is supported by the emergency stop block 14 and guides the rail 9. When the emergency stop device starts to operate and the operation lever 14b starts to rotate, the support link 15 is lifted and the guide shoe 16 connected thereto is lifted and retracted upward from the emergency stop block 14. Further, when the emergency stop operating lever 14b is lifted, the emergency stop block 14 and the emergency stop roller 14c are caught in the rail and the elevator is completely stopped.

Gradual emergency stop has a simple structure, and it is easy to set and adjust the lever position and emergency stop operating roller position.
In this example, it is not necessary to form the flange of the positioning member to be hooked on the emergency stop block on the frame plate of the guide shoe as in the first and second embodiments, and the same effect as in the first and second embodiments can be obtained with a simple configuration. It is done.

In the examples of the first to third embodiments described above, the emergency stop device is arranged inside the car frame lower frame. However, the emergency stop device may be arranged inside the upper beam of the car frame. .
Although not shown, the present invention can be similarly applied to an emergency stop device of that type.
It can also be applied to cases where emergency stop devices are attached to both the upper beam of the car frame and the lower frame of the car frame.

FIG. 3 is a perspective view showing a relationship between a car cage frame and a guide shoe according to the first embodiment. The side view of the lower part of the car frame of FIG. Emergency stop plan view. FIG. 4 is a side view of FIG. 3. 3 is a perspective perspective view of FIGS. The figure of an elevator normal state with the front view and side view of an emergency stop. The figure of the state of the emergency stop of FIG. The figure of the state which the operation of the emergency stop of FIG. 7 completed. FIG. 6 is an exploded perspective view of FIG. 5. The figure of an elevator normal state (detail drawing of the emergency stop part in FIG. 6) with the principal part top view of an emergency stop. FIG. 9 is a diagram of an emergency stop in an activated state (partial detail view of the emergency stop in FIG. 8). The perspective view which shows the relationship between the safety device of Embodiment 2, and a guide shoe. The side view of FIG. The top view of FIG. The top view of the state which the operation of the emergency stop device was completed. The perspective view which shows the relationship between the safety device which shows Embodiment 3, and a guide shoe. The top view of FIG. FIG. 17 is a front view of the elevator in a normal state. The front view of the state of the emergency stop device starting to operate. The figure of the state where the emergency stop operating roller hits the rail and the emergency stop device starts to work. The figure of the state in which the emergency stop device was fully effective. The perspective view which shows the relationship between the cage | basket | car cage of a conventional elevator, and a guide shoe. The side view which shows the relationship between the cage lower part of FIG. 22, and a guide shoe.

Explanation of symbols

1 is a car, 2 is a car frame upper beam, 3 is a car frame pillar, 4 is a car frame lower beam, 4a is an emergency brake, 4b is a roller, 4c is a presser foot, 4d is a clamp, 4e is a shaft, 4f Is a spring, 4h is a connecting plate, 4j is a presser nut, 5 is a floor support frame, 6 is a car floor, 7 is a car door, 8 is an emergency stop pulling bar, 8a is a shaft, 8b is a lifting lever, and 8c is Emergency stop operating lever, 8d is a pin, 8e is a connecting lever, 8f is a connecting rod, 9 is a guide rail, 9a is a governor rope, 10 is a guide shoe, 10a is a link mechanism, 10b and 10c are a catch, 10d is a pin, 10e is a mounting bracket, 10f is a positioning flange, 10j is a frame plate, 11 is a connection link, 12 is a horseshoe-shaped spring clamp, 13, 13a is a mounting plate, 13b is a mounting bolt, 14 is an emergency stop block, 14a is connected Shaft, 14b is emergency stop lever, 14c is non Gear operating rollers, 14d bearing bracket 15 supports the link, 16 guide shoes, 16a pin bearing, 16b are frame plate, 17 the lower guide shoe, 18 upper guide shoe

Claims (4)

An emergency stop device characterized in that a guide shoe is removably mounted in a gap between the emergency stop brake and the rail. A sliding member, a frame plate, a metal receiver, a link mechanism, and a connection link connected to the emergency stop operating lever, and the guide shoe retracted from the brake and the rail gap by the movement of the operating lever; The emergency stop device according to claim 1, wherein: The emergency stop device according to claim 1 or 2, wherein a guide shoe is provided with a positioning member in the vertical direction of an emergency stop brake on a frame plate of the sliding material. The emergency stop device according to any one of claims 1 to 3, wherein the emergency stop device is incorporated in at least one of a car upper beam and a car lower beam.

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