JPS5914467Y2 - Raised elevator equipment - Google Patents

Description

[Detailed Description of the Invention] Technical Field of the Invention This invention relates to a lift type elevator device in which a sheave is provided on the lower surface of the car, and a rope for raising and lowering the car is hung on the sheave to raise and lower the car.

Technical Background of the Invention A lift-up elevator system is often found in small-sized elevator systems with a relatively small elevator stroke, and its configuration is as follows.

That is, FIG. 1 schematically shows a raised elevator system, in which a unit room 2 for driving and controlling the elevator system is provided adjacent to a hoistway 1, and a car 4
A hydraulic jack 3 for raising and lowering is provided within the hoistway 1.

The car 4 is provided with sheaves 5 on both sides of its lower surface, and one end of a rope 6 for raising and lowering the car 4 is fixed to a jack stand at the bottom of the hoistway, and the rope 6 that raises and lowers the car 4 is fixed to a jack stand at the bottom of the hoistway. The sheave provided on the upper end of the plunger and the sheave 5 on the lower surface of the car 4 are wound in sequence, and the other end is fixed to the upper part of the hoistway.

This lifting type elevator device operates the rope 6 by operating the jack 3 and moving the plunger up and down.
The car 4 is raised and lowered via a sheave 5 on the lower surface of the car, and is supported by a rope 6 through a sheave 5 on the lower surface of the car. It is designed to move up and down while being guided by a guide rail via a shoe.

In addition to the guide shoe, an emergency stop safety device is also provided at both ends of the car lower beam facing the guide rail.

Further, the sheaves 5 provided on both sides of the flat surface of the car 4 are generally located below the car lower beam 8 and intersect diagonally with the car lower beam 8 at the center, as shown in FIGS. 2 and 3. The sheave attachment beam 11 is provided horizontally and is attached to both ends of the sheave attachment beam 11, which is attached to the car lower beam 8 via arm members 12.13.

Further, it is desirable that the car 4 is supported by the rope 6 as close to the guide rail 7 as possible, and for this purpose, it is necessary to move the sheave 5 as close to the guide rail 7 as possible without interfering with the guide rail 7. The sheave attachment beam 11 is attached with the angle of intersection with the car lower beam 8 as small as possible.

In addition, as shown in FIG. 4, on the lower surface of the car 4, a tail cord 14 for transmitting and receiving electrical signals between the inside of the car 4 and the unit chamber is provided with an optimal bending radius R. They are connected to move up and down as you go up and down.

By the way, even in this type of lift type elevator system, the car 4 may be lowered further than the normal lowest position for some reason, so if such an abnormal descent occurs, the car 4 is moved with a buffering effect. It is necessary to provide a buffer for stopping the receiving at the bottom of the pit at the bottom of the hoistway, and to provide a buffer receiving plate on the lower surface of the car 4 facing the buffer.

Various positions are conceivable for installing this buffer receiving plate, but since the area of the buffer receiving plate is relatively large, if this buffer receiving plate is directly attached to the car lower beam 8, the size of the buffer receiving plate will be too large. It is necessary to increase the intersection angle of the sheave mounting beam 11 with the lower beam 8 to avoid interference between the sheave mounting beam 11 and the buffer receiving plate, which would cause the sheave 5 to be far away from the guide rail 7. It turns out.

Therefore, conventionally, as shown in FIGS. 2 and 3, a buffer receiving plate mounting member 10 is provided at the center of the car lower beam 8 and extends from both sides thereof, and the lower surface of the tip of this both number mounting member 10 is provided. In addition to attaching buffer receiving plates 9 to each, a buffer mounting beam 1 is attached to the center of a fixed beam 15 provided at the bottom of the pit at the bottom of the hoistway as shown in FIG.
6 is provided, and a buffer 17 is provided on the tips of both mounting beams 16 to face the buffer receiving plate 9.

Problems with the Background Art However, in the elevated elevator system having such a configuration, the buffer receiving plate 9 is attached to the center of the car lower beam 8 via the buffer receiving plate mounting member 10, so that the car 4
If for some reason it falls below its normal lowest position and hits the buffer 17 provided at the bottom of the pit at the bottom of the elevator hoistway, the impact force will be transmitted to the center of the car lower beam 8 via the buffer receiving plate mounting member 10. This acts as a concentrated load, and therefore, the car lower beam 8 must be constructed to withstand this central concentrated load, but it is necessary to use a material with high strength or a large shape and dimension for the car lower beam 8. Therefore, it is inconvenient both economically and in terms of installation space.

Purpose of the invention This invention was made in view of the above-mentioned circumstances, and its purpose is to reduce the impact force when the buffer receiving plate hits the buffer to both ends of the lower beam. This eliminates the need for the car lower beam to have a high-strength structure by making it possible to share the load, thereby making it possible to reduce the material strength and shape of the car lower beam.
To provide a lift-up type elevator device in which a sheave can be brought close to a guide rail by reducing the intersection angle between a car lower beam and a sheave mounting beam without causing interference between the sheave mounting beam and a buffer receiving plate.

Summary of the invention In other words, this invention attaches leg members whose tips protrude below the sheave attachment beam to both ends of the car lower beam, attaches a buffer receiving plate to the tips of the leg members, and increases the thickness of the leg members. The structure has a structure in which the area of the buffer receiving plate is smaller than the area of the buffer receiving plate, and by providing the buffer receiving plate at both ends of the car lower beam, the shock applied to the car lower beam when the buffer receiving plate hits the buffer is reduced. The force is distributed and received at both ends of the car lower beam, thereby eliminating the need for the lower beam to have a high-strength structure, and making it possible to reduce the material strength and shape of the lower beam. , the buffer receiving plate is provided so as to be located below the sheave mounting beam via the leg member, and the thickness of the leg member is made smaller than the area of the buffer receiving plate, so that the sheave mounting beam is connected to the buffer receiving plate. The sheave can be brought close to the guide rail by making the intersection angle with the lower beam small to the extent that the leg member and the sheave mounting beam do not interfere, regardless of the size of the buffer receiving plate.

Examples of ideas An embodiment of this invention will be described below with reference to the drawings.

In FIGS. 6 and 7, reference numeral 21 denotes a pair of car lower beams attached to a pair of guide rails 23 provided perpendicularly to the hoistway on the lower surface of the car 22, with both ends facing each other. Guide shoes and stabilizing devices (not shown) corresponding to the guide rails 23 are attached to both ends of the lower beam 21.

A pair of sheave attachment beams 24 are arranged below the car lower beam 21 so as to intersect diagonally at the center thereof, and these sheave attachment beams are connected to the car lower beam 21 via arm members 25 and 26. A sheave 27 is pivotally supported at both ends of the sheave attachment beam 24.

Further, buffer receivers 28 are installed between both ends of the car lower beam 21, and the buffer receivers 28 are
A leg member 29 made of a pipe, a buffer receiving plate 30 attached to its tip, and a mounting member 3 attached to its base end.
1, and is attached to the car lower beam 21 via this attachment member 31.

As shown in the figure, the leg members 29 have a thickness that is considerably smaller than the area of the buffer receiving plate 30. (The thickness can be made quite small as long as it can withstand compressive force) and has a length such that its tip protrudes below the sheave mounting beam 24. It is located below the sheave attachment beam 24.

In addition, the buffer receiving plate 30 is installed at the bottom of the pit at the bottom of the hoistway.
The buffer 33 is provided opposite to the fixed beam 3 that communicates the left and right guide rails 23 at the bottom of the pit.
It is installed directly on top of 2.

However, in this elevated elevator device,
Since the buffer receiving plate 30 is provided at both ends of the car lower beam 21, the impact force applied to the car lower beam 21 when the buffer receiving plate 30 hits the buffer 33 is distributed to both ends of the car lower beam 21. Since the car lower beam 21 does not need to have a high-strength structure, the material strength and shape of the car lower beam 21 can be reduced.

Moreover, in this lift type elevator device, the buffer receiving plate 30 is connected to the sheave mounting beam 2 through the leg member 29.
4, and the leg member 2
9 is made smaller than the area of the buffer receiving plate 30, the intersection angle between the sheave mounting beam 24 and the car lower beam 21 can be set to the leg member 29 and the sheave mounting beam regardless of the size of the buffer receiving plate 30. 24, and the sheaves 27 at both ends of the sheave attachment beam 24 can be brought closer to the guide rail 23, so the car 22 can be supported by the rope near the guide rail 23.

In addition, in the above embodiment, the buffer receiving plate 30 is connected to the car lower beam 21.
Although a pipe is used as the leg member 29 for attaching to the frame, the leg member 29 is not limited to the pipe, and any suitable beam material may be used.

Effects of the invention According to this invention, the impact force when the buffer receiving plate hits the buffer can be shared and received by both ends of the car lower beam, so there is no need for the car lower beam to have a high-strength structure. This allows the material strength and shape of the car lower beam to be reduced, and even though buffer receiving plates are provided at both ends of the car lower beam, the sheave mounting beam and buffer receiving plate do not interfere with each other. The sheave can be brought close to the guide rail by reducing the intersection angle between the car lower beam and the sheave mounting beam without causing any problems.

[Brief explanation of the drawing]

Figure 1 is a schematic configuration diagram of the elevated elevator system, Figure 2
The figure is a bottom view of a car in a conventional raised elevator system.
Figure 3 is a front view of the lower part of the car, Figure 4 is a schematic diagram showing the attachment of the tail cord, Figure 5 is a perspective view of the buffer attachment section of a conventional raised elevator system, and Figure 6 is the proposed invention. FIG. 7 is a front view of the lower part of the car and the attachment of the buffer in a raised elevator system showing one embodiment of the present invention, and FIG. 7 is a bottom view of the car. 21... Car lower beam, 22... Elevator car, 23... Guide rail, 24...
... Sheave installation is beam, 25°26 ... arm member, 27 ... sheave, 29 ... leg member,
30...Buffer receiving plate, 33...Buffer.

Claims (1)

[Scope of utility model registration request] A sheave mounting beam with sheaves attached to both ends is installed horizontally under the car lower beam attached to the lower surface of the car so as to diagonally intersect with the car lower beam at the center, and the car is raised and lowered by the sheave. In a lift-up elevator system, in which a rope is hung, a buffer receiving plate is provided on the lower surface of the car, and a buffer is provided at the bottom of the pit at the bottom of the hoistway, facing the buffer receiving plate, both ends of the car lower beam are provided. A leg member whose tip protrudes below the sheave mounting beam is attached to the leg member, the buffer receiving plate is attached to the tip of the leg member, and the thickness of the leg member is made smaller than the area of the buffer receiving plate. A raised elevator device featuring: