JPH058971A - Cage frame construction for elevator - Google Patents

Abstract

PURPOSE:To insure a space for dealing with fitting of an auxiliary cable for weight compensation of a main cable, emergency stoppers, and large-sized guide rollers, accompanied with high speed and high lift trend of an elevator. CONSTITUTION:A lower frame as a main constitution member of an elevator cage is constituted of a first lower frame 10 and a second lower frame 16. The first lower frame 10 is provided with emergency stoppers 26, and the second lower frame 16 is provided with lower guide rollers 24 on the upper face, buffer receivers 28 on the underside, and on the center part of the second lower frame, an auxiliary cable compensating the weight of a main cable is fixed. Hereby, the suspending center of the auxiliary cable can be provided near to the suspending center of the main cable, regardless of sizes of the guide rollers, the emergency stoppers, and the buffer receivers of the elevator, and as a result of this, stability of the elevator at high speed running can be improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a car frame structure for an elevator, and more particularly to a car frame structure for an elevator which is compatible with high speed and high lift of the elevator.

[0002]

2. Description of the Related Art In recent years, with the rise of city buildings, elevators, which are one of the means of urban transportation, are required to provide high speed and high lift service. The structure of the car frame that supports the car is required. Generally, as the speed and height of elevators have increased, the size of shock absorbers and emergency stop devices in emergencies has increased, the number of auxiliary ropes for compensating the weight of the main rope has increased, and the number of guide rollers that are guides has been increased. Since the size of the elevator car has been increased, the car frame structure of the elevator must meet these requirements.

As a conventional technique relating to the elevator car frame structure, for example, the technique described in Japanese Patent Laid-Open No. 53-47649 is known.

As described in this prior art, generally, an elevator car is composed of an upper frame, a vertical frame, and a lower frame each having a V-shape.
It has a structure in which a floor frame that supports the car is attached near the joint between the lower frame and the vertical frame. Then, the end portion of the main rope is attached to the center portion of the upper frame, and the end portion of the supplementary rope for compensating the weight of the main rope is attached to the center portion of the lower frame. Guide rollers contacting two guide rails provided on the inner wall of the hoistway of the elevator are provided on both sides of the upper frame portion upper surface side and the lower frame portion lower surface side, and at both ends of the lower frame portion, in an emergency, An emergency stop device constricted to the guide rail is further provided on the lower surface side of the lower frame, and a buffer receiver when abutting against a buffer provided in the lower part of the hoistway.

As described above, the lower frame portion is required to have a fixing portion for the rope, a guide roller, an emergency stop, and a mounting space for the buffer receiver.

[0006] When the lift of the elevator is increased,
The number of main ropes increases (as the length of the main rope increases, the load capacity that can be suspended by each main rope decreases due to the weight of the main rope itself). To increase. Also, as the elevator speed increases, the guide roller becomes larger in diameter, the emergency stop becomes larger, and the buffer receiving part becomes larger.
The misalignment between the suspension core and the suspension core cannot be avoided.

This misalignment causes an eccentric load that causes the inclination of the car frame, acts on the car frame, and increases the pressing force of the guide roller on the rail. As a result, a slight bending of the guide rail is transmitted to the car, which deteriorates the riding comfort.

As described above, the lower frame structure of the car according to the prior art has an elevator operating speed of 500 to 600 m.
/ Min, a lift of about 200 to 300 m is acceptable, but if the elevator is operated at a higher speed and a higher lift, it is not possible to secure the space under the lower frame part, ensuring safety functions and improving riding comfort. It is difficult to secure performance.

[0009]

As described above, the elevator car frame structure according to the prior art has an increased number of ropes, a larger guide roller diameter, a larger emergency stop, and a buffer receiving portion. Due to the increase in size, it is not possible to secure a space on the lower surface of the lower frame portion for mounting these, and there is a problem that it is difficult to secure safety functions and ride comfort performance.

An object of the present invention is to solve the above-mentioned problems of the prior art and to secure a mounting space for safety devices such as a guide roller, an emergency stop, and a buffer receiver which are increased in size in response to the speeding up of an elevator. In addition, we provide a lower frame structure that can secure a space for installing a supplementary rope to cope with an increase in the number of supplementary ropes due to the elevation of the elevator, and the elevator safety function corresponding to the high speed and high elevation of the elevator. Another object of the present invention is to provide an elevator car frame structure capable of satisfying ride comfort performance.

[0011]

According to the present invention, the object is to attach a car lower frame to a first lower frame directly below the car floor, and below the first lower frame via a connecting member. And the second lower frame, the first lower frame is provided with an emergency stop, the upper ends of the second lower frame (on the first lower frame side) are provided with guide rollers, and the second lower frame is provided with guide rollers. This can be achieved by providing buffer supports on both sides of the lower surface and a mounting portion for a rope on the center of the second lower frame. In the above structure, the guide roller may be provided directly below the emergency stop.

[0012] Further, the above-mentioned object is to arrange an emergency stop at both ends of the upper frame, guide rollers on the lower surfaces of both ends of the first lower frame, buffer buffers at both ends of the lower surface of the second lower frame, This is achieved by providing a mounting portion for a rope in the central portion of the second lower frame.

[0013]

In addition to the first lower frame just below the floor of the car, the second lower frame is provided below the first lower frame via the connecting member, so that the lower surface of the second lower frame can be Since it is not necessary to install an emergency stop, guide roller, etc., on the lower surface of the second lower frame,
It is possible to secure a sufficient space for mounting the buffer bridge and the rope attachment portion. As a result, the present invention makes it possible to match the attachment core of the supplementary rope with the suspension core of the main rope of the upper frame, and prevent the cage frame from generating an eccentric load on the guide rail due to the tension of the supplementary rope. You can Further, the space for installing the guide roller and the emergency stop can be secured regardless of the space for installing the buffer receiver and the auxiliary rope.

Further, the emergency stop is arranged at both ends of the upper frame,
In the structure in which the guide rollers are provided on the lower surfaces of both ends of the first lower frame, and the buffer receivers are provided on both ends of the lower surface of the second lower frame, the emergency stop is attached to the upper frame section. The space between the lower frames can be reduced, and the weight of the connecting member between the lower frames can be reduced.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the elevator car frame structure according to the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a front view showing the structure of a first embodiment of the present invention, and FIG. 2 is a side view thereof. 1 and 2, 2 is an entrance, 4 is a car, 6 is an upper frame, 8 is a vertical frame, 1
0 is the first lower frame, 12 is the floor, 14 is the connecting material, 16 is the second
Lower frame, 18 main ropes, 20 auxiliary ropes, 22 guide rails,
Reference numeral 24 is a guide roller, 26 is an emergency stop, and 28 is a buffer receiver.

In the first embodiment of the present invention shown in FIGS. 1 and 2, a car 4 having an entrance 2 has an upper frame 6, a vertical frame 8,
It is supported by the first lower frame 10 and the floor 12. A second lower frame 16 is provided below the first lower frame 10 via a connecting member 14.
Are connected. A main rope 18 for suspending the car frame is attached to the central portion of the upper frame 6, and a supplementary rope 20 for compensating the weight of the main rope 18 is attached to the central portion of the second lower frame 16.
Further, guide rollers 24 that come into contact with two guide rails 22 fixed to the wall side of the hoistway (not shown) are provided at both ends of the upper surfaces of the upper frame 6 and the second lower frame 16, and further,
Emergency stops 26 for narrowing the rail 22 in an emergency are arranged at both ends of the lower frame 10, and buffer supports 28 are arranged at both ends of the lower surface of the second lower frame 16.

The first aspect of the present invention having the structure as described above.
In this embodiment, the guide roller 2 is provided on the lower surface of the second lower frame 16.
4, since the emergency stop 26 is not attached,
Even if the number of railcars increases due to the higher lift of the elevator, the two buffer receivers 28 can be mounted close to the guide rail 22 side, and the space for mounting the buffer receivers 28 can be easily secured. You can Also,
Even if the diameter of the guide roller 22 and the size of the emergency stop 26 are increased due to the speedup of the elevator,
It is possible to dispose the guide roller 22 and the emergency stop 26 regardless of the position of the position and the position of the buffer receiver 28.

As a result, in the above-described first embodiment of the present invention, the deviation of the suspension core between the main rope 18 and the auxiliary rope 20 can be reduced, and the occurrence of an eccentric load acting on the car frame can be prevented. Thus, it is possible to improve the stability of the car 4 when traveling at high speed.

FIG. 3 is a front view showing a modification of the first embodiment of the present invention. In the above-described first embodiment of the present invention, the lower guide roller 24 is arranged on the upper surface of the second lower frame 16, but the modification shown in FIG.
4 is arranged just below the emergency stop 26 provided in the lower part of the second lower frame 10. Even with such a configuration, the same as in the case of the first embodiment of the present invention described above. The effect can be obtained.

FIG. 4 is a front view showing the structure of the second embodiment of the present invention, and the reference numerals in the drawing are the same as those in FIGS.

In the second embodiment of the present invention, as shown in FIG. 4, the emergency stop 26 is arranged at both ends of the upper frame 6. As a result, in this embodiment, the first lower frame 1
Since the space for the emergency stop 26 provided in the lower part of 0 can be eliminated and the space between the first lower frame 10 and the second lower frame 16 can be reduced, the length of the connecting member 14 can be reduced. The length can be shortened, and the weight of the entire car frame can be reduced.

In the second embodiment of the present invention shown in FIG. 4, the lower guide roller 24 is arranged on the first lower frame 10, but the lower guide roller 24 is the same as in FIG. Alternatively, it may be arranged on the upper surface of the second lower frame 16.

FIG. 5 is a side view showing the structure of the third embodiment of the present invention. In FIG. 5, reference numeral 30 is a straightening plate, and other reference numerals are the same as those in FIGS. 1 and 2.

Generally, when the speed of an elevator is high, unless the shape of the lower part of the car is adjusted, a wind noise is generated and the car vibration is also generated. Therefore, in order to prevent this, rectification is performed at the lower part of the car. A board is provided.

In the third embodiment of the present invention, the second lower frame 16 is used as a support frame for eddy current prevention,
Centering around the second lower frame 16, the current plate 30 is attached to the second lower frame 16 on the door side and the rear side of the car. In the illustrated example, the rectifying plates 30 attached to the door side and the rear side are symmetrical with respect to the door side and the rear side, but the shape of these rectifying plates 30 is the shape of the inner wall of the hoistway, the inner wall of the cage and the inner wall of the car. The optimum shape can be obtained depending on the distance between the and.
For example, the shape of the rectifying plate on the door side of the car is such that the portion along the wall surface is long and linear as shown by the dotted line in FIG.

According to the third embodiment of the present invention as described above, no eddy current is generated in the lower part of the car even when the speed of the elevator is increased, so that the vibration of the car and the vortex noise due to the vortex flow are generated. Can be prevented.

According to the above-described embodiment of the present invention, the lower frame portion of the car frame is constituted by the first lower frame and the second lower frame, so that the main ropes and the auxiliary ropes are increased by increasing the lift of the elevator. Even if the number of ropes is increased, these attachment portions do not contribute to the arrangement of the emergency stop, the guide roller and the like. Therefore, in the embodiment of the present invention, the prosthetic cord is provided in the center of the second lower frame,
It is possible to install the main rope without causing misalignment with respect to the hanging core position.

According to the embodiment of the present invention described above,
Since it is possible to deal with larger emergency stop sizes and larger guide roller diameters as the elevator speed increases,
It is possible to provide an elevator that is highly safe and comfortable to meet the demand for high speed and high lift of the elevator.

Further, by disposing the emergency stop on the upper frame portion, the interval between the first lower frame and the second lower frame can be made small, and the weight of the connecting member of each lower frame can be reduced, and as a result, It is possible to reduce the weight of the entire car frame and reduce the overall height of the car frame of the elevator. As a result, in the above-described embodiment of the present invention, it is possible to secure a wide clearance between the elevator car and the roof of the building and the clearance between the building and the building pit, which are required for safety during high-speed traveling of the elevator. It is possible to improve the sex.

[0031]

As described above, according to the present invention, the guide roller is increased in size corresponding to the speeding up of the elevator,
It is possible to secure a space for mounting safety devices such as an emergency stop and a buffer receiver, and also secure a space for mounting a supplementary rope that corresponds to an increase in the number of supplementary ropes due to a higher lift of the elevator. In addition, it is possible to satisfy the elevator's high speed and high lift, and to satisfy the elevator's safety function and riding comfort performance.

[Brief description of drawings]

FIG. 1 is a front view showing the structure of a first embodiment of the present invention.

FIG. 2 is a side view of FIG.

FIG. 3 is a front view showing a modification of the first embodiment of the present invention.

FIG. 4 is a front view showing the structure of the second embodiment of the present invention.

FIG. 5 is a side view showing the structure of the third embodiment of the present invention.

[Explanation of symbols]

4 baskets 6 Upper frame 8 vertical frames 10 First lower frame 16 Second lower frame 20 Search 24 Guide roller 26 Emergency stop 28 buffer receiving 30 current plate

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Yasukawara Jun             Hitachi, Ltd. 1070 Ige, Katsuta City, Ibaraki Prefecture             Factory Mito Factory

Claims (6)

[Claims] 1. An elevator car frame including an upper frame, a vertical frame, and a lower frame, wherein the lower frame is composed of a first lower frame directly below the car floor and a second lower frame below the car floor. The second
An elevator car frame structure characterized by attaching a rope to the lower part of the lower frame. 2. A car frame of an elevator, which comprises an upper frame, a vertical frame and a lower frame and is suspended by main ropes, wherein the lower frame is a first lower frame directly below the car floor and a second lower frame below it. A lower frame, an emergency stop at the lower part of the first lower frame, guide rollers at the lower part of the car frame at both upper ends of the second lower frame, and buffers at both lower ends of the second lower frame. Elevator car frame structure featuring a receiver. 3. The guide roller in the lower part of the car frame is attached not directly to the second lower frame but directly below the emergency stop attached to the lower part of the first lower frame. Elevator car frame structure. 4. The elevator car frame structure according to claim 2, wherein the emergency stop is attached not to the first lower frame but to the lower portion of the upper frame. 5. The elevator car according to any one of claims 1 to 4, wherein the suspension core of the supplementary rope is attached to the central portion of the second lower frame together with the suspension core of the main rope. Frame structure. 6. The car frame structure for an elevator according to claim 1, wherein the second lower frame is used as a support frame for a rectifying plate for preventing eddy currents.