JP2012020798A - Cage frame apparatus for underslung elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a cage frame apparatus for a underslung elevator that has a small and light dimension under the cage floor.SOLUTION: The cage frame apparatus for the underslung elevator where each guide rail is provided at both walls in a hoistway includes: a horizontally long lower cage frame that is perpendicular in a front-back direction of a cage floor and is fixed more backward than a center line passing in the front-back direction by a predetermined dimension; a pair of hanging wheels that are provided inside both parts of the lower cage frame; and an emergency stop device that is provided on a front face of the lower cage frame, wherein the guide rail is provided to correspond to the emergency stop device.

Description

  The present invention relates to a lift-up type elevator car frame device in which an elevator car is suspended via a suspension vehicle in a machine room-less elevator.

Machine room-less elevators, which have been increasing in recent years, have been increasing in sales in recent years because the space is small and the space efficiency of the building is good. Further, the elevator is required to further reduce the dimension below the car floor.
In conventional lift-type elevators, in order to suspend the center of gravity of the elevator car in a well-balanced manner, a method of suspending a suspension vehicle attachment beam obliquely under the elevator car frame has been used (for example, Patent Document 1 or 2).
In addition, there has been proposed one in which a cage frame is slightly shifted and a suspension car mounting beam is arranged next to it. (For example, refer to Patent Document 3 or 4).

JP 2001-247278 A JP 2002-87732 A JP 2001-80852 A Japanese Patent Laid-Open No. 3-8686

  In the elevators shown in Patent Documents 1 and 2, it is possible to hang at the center of gravity of the elevator car by combining the suspension car mounting beams diagonally, and the load on the guide shoe can be reduced. An attachment beam is required, and a member for firmly attaching the suspension vehicle attachment beam to the lower beam of the cage frame is necessary, and there has been a problem that the dimension below the floor surface is increased due to the above requirements. In terms of manufacturing, there are many problems when the number of slanted members is large and the processing cost is high.

  In addition, in the elevators shown in Patent Documents 3 and 4, the height under the floor can be lowered, but the problem is that the balance of the elevator car is poorly suspended and the load on the guide shoe is unbalanced. When the elevator car falls, there is a problem that the member becomes large because the strength for supporting the load of the suspension vehicle and the suspension vehicle mounting beam with the cage frame is required to be large.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to obtain a lift-type elevator car frame device that is small and light in size from the floor of the car.

  A lift-type elevator car frame device according to the present invention is a lift-type elevator car frame device in which guide rails are erected on both side walls in a hoistway, respectively, and is perpendicular to the front-rear direction of the car floor and A horizontally long cage lower frame that is fixed rearward by a predetermined dimension from a center line passing through the center, a pair of suspension vehicles disposed inside both ends of the cage lower frame, and the front of the cage lower frame An emergency stop device disposed on a side surface, and the guide rail is disposed to correspond to the emergency stop device.

A lift-type elevator car frame device according to the present invention is a horizontally elongated car lower frame that is orthogonal to the front-rear direction of the car floor and is fixed rearward by a predetermined dimension from a center line passing through the center of the front-rear direction, A pair of suspension vehicles disposed inside both ends of the basket lower frame, and an emergency stop device disposed on a front side surface of the basket lower frame, wherein the guide rail is attached to the emergency stop device. Since the guide rails are arranged so as to correspond to each other and are moved up and down by the guide rails shifted to the front side of the car floor, there is little bias in the suspension balance of the elevator car, and it is possible to suppress wear of the guide shoes.
In addition, since the car lower frame is also used as a suspension car mounting beam and the emergency stop device is attached to the side of the car lower frame, it is attached by the safety device support bracket, so there is no need for a conventional frame to store the emergency stop device. The weight of the apparatus can be reduced, the space of the entire apparatus can be kept small, and the height under the floor can be reduced.

It is a top view which shows the basic composition of the raising type elevator which concerns on Embodiment 1 of this invention. It is the perspective view of the cage frame which showed the cage by the imaginary line. It is a top view of a basket upper frame part. It is a front view which shows a basket lower frame and an emergency stop apparatus support metal fitting part. FIG. 5 is a perspective view of FIG. 4. It is a top view which shows the basic composition of the lift type elevator which concerns on Embodiment 2 of this invention. It is a figure which shows the example which arrange | positions three guide rails. It is a top view which shows the basic composition of the lift type elevator which concerns on Embodiment 3 of this invention.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of a lift-up type elevator car frame device of the present invention will be described with reference to the drawings.
Embodiment 1 FIG.
FIG. 1 is a plan view showing a basic configuration of a lift-type elevator according to Embodiment 1 of the present invention. FIG. 1 shows an elevator car 1, a suspension wheel 12, a hoisting rope 11, and a car floor 2. FIG. 2 is a perspective view of the cage frame in which the elevator cage 1 is indicated by an imaginary line. FIG. 3 is a plan view of the cage upper frame 4. FIG. 4 is a front view showing a cage frame lower frame and an emergency stop device support fitting portion. FIG. 5 is a perspective view of FIG.

The elevator car 1 is lifted by a hoisting rope 11 and is guided up and down by a pair of guide rails 13 erected on both side walls of the hoistway.
The elevator car 1 is disposed in a car frame composed of a car frame pillar 3, a car upper frame 4, and a horizontally long (for example, a square pipe shape) car lower frame 5.
The car floor 2 of the elevator car 1 is fixed on the car lower frame 5, and the car lower frame 5 is orthogonal to the front-rear direction of the car floor 2 (the direction perpendicular to the door that opens and closes the elevator door of the elevator car 1). At the same time, it is fixed to the rear of about half the width of the car lower frame 5 from the center line passing through the center in the front-rear direction.

  The shaft 12a of the lifting suspension 12 is rotatably supported on both edges of the front and rear side surfaces of the cage lower frame 5. Then, the hoisting rope 11 extends downward from a hoisting machine (not shown), is hung on one lifting suspension 12, extends horizontally in the basket lower frame 5, and is hung on the other lifting suspension 12. , Extending upward.

The pair of guide rails 13 are disposed about a half of the width of the safety device 6 from the center line in the front-rear direction of the basket floor 2. That is, the position where the center line in the front-rear direction of the car floor 2 substantially coincides with the front side surface of the car lower frame 5 passes through the center of gravity of the elevator car 1.
The cage frame mounting brackets 5b are fixed to both ends of the upper side surface of the cage lower frame 5, and the inspection ports 5c are opened at both edges on the front side surface of the cage lower frame 5.
The basket-side shock-absorbing plate 9b is arranged at the position of the center of gravity of the cage lower frame 5. Further, a shock absorber 9a is disposed on the pitch directly below the contact plate 9b.

The two emergency stop devices 6 are respectively disposed at both edges of the front side surface of the car lower frame 5 to stop the movement of the elevator car 1.
The emergency stop device 6 is located in the vicinity of the guide rail 13 when in the lowered position, and when it is in the raised position, the wedge-shaped emergency stop brake 6a that protrudes upward and tightens the guide rail 13 when it is in the raised position. A pressing body 6b that faces the side surface of the body 6a, a roller 6c that rolls the wedge-shaped emergency stop braking body 6a along the side surface of the pressing body 6b, and an emergency stop support bracket that is fixed to the front side surface of the cage lower frame 5 6e, an operating shaft 7a rotatably supported on both side surfaces of the emergency stop support fitting 6e, and an operating arm 6d fixed to the operating shaft 7a and rotatably supported at the lower end of the wedge-shaped emergency stop braking body 6a. Is composed of.

Further, a connecting rod 15 that interlocks the operating shafts 7a of the two safety devices 6 is attached to the operating shaft 7a via a link mechanism.
The operating lever 7 is fixed to the operating shaft 7a of one emergency stop device 6. A rope gripping portion 7b is fixed to the tip of the operating lever 7, and the governor rope 8 is gripped by the rope gripping portion 7b.
A guide shoe 10b is fixed to the lower part of the emergency stop support fitting 6e.

  The cage upper frame 4 is a four-sided frame having four sides formed by square pipes, and a door opening device beam 4 a is fixed to the square pipe of the door of the elevator cage 1. A bracket 4b for fixing the basket frame column 3 and a guide shoe 10a are fixed to a square pipe parallel to the longitudinal direction of the basket floor 2 of the basket upper frame 4.

  The operation of the emergency stop device 6 will be described. When the descending speed of the elevator car 1 becomes very large, the governor 16 stops the traveling of the governor rope 8, so that the tip of the operating lever 7 moves upward. Then, the operating shaft 7a rotates and the tip of the operating arm 6d fixed to the operating shaft 7a moves upward. When the tip of the operating arm 6d moves upward, the wedge-shaped emergency stop braking body 6a connected thereto moves upward, and when the wedge-shaped emergency stop braking body 6a moves upward, the gap between the wedge-shaped emergency stop braking bodies 6a becomes narrower, and the guide The rail 13 is tightened.

  The lift-type elevator car frame device according to Embodiment 1 of the present invention is a horizontally long shape that is orthogonal to the front-rear direction of the car floor 2 and is fixed rearward by a predetermined dimension from a center line passing through the center of the front-rear direction. Since the car lower frame 5, a pair of suspension wheels 12 disposed inside both ends of the car lower frame 5, and the emergency stop device 6 disposed on the front side surface of the car lower frame 5, The hoisting rope 11 and the emergency stop device 6 are arranged back and forth around the center line, so that the bias of the elevator car 1 is less biased and wear of the guide shoes 10a and 10b can be kept small.

Further, the car lower frame 5 is also used as a suspension car mounting beam, and the emergency stop device 6 is attached by an emergency stop device support fitting 6e attached to the front side surface of the cage lower frame 5. There is no need for a frame to fit, and the basket can be made lighter.
Further, the lifted suspension wheel 12, the hoisting rope 11, and the safety device 6 can be accommodated in a small space, and the height under the floor can be reduced.

In the lift type elevator car frame device according to the first embodiment of the present invention, the example using the wedge-shaped emergency stop braking body 6a has been described, but a horseshoe-shaped spring type emergency stop device may be adopted.
Moreover, although the example which has arrange | positioned the guide rail 13, the safety device 6, and the guide shoes 10a and 10b in the near side from the center line of the cage floor 2 was demonstrated, these are arrange | positioned in the depth side from the center line of the cage floor 2. Also good.

Embodiment 2. FIG.
FIG. 6 is a plan view showing a basic configuration of a lift-up type elevator car frame device according to Embodiment 2 of the present invention.
The lift type elevator car frame device according to the second embodiment of the present invention includes three guide rails 13 and includes an emergency stop device 6 and a guide shoe 10b for each guide rail 13.
Two emergency stop devices 6 are arranged on the front side of the car lower frame 5, and one emergency stop device 6 is arranged on the rear side of the car lower frame 5.
The emergency stop operating shaft 7a of the emergency stop device 6 disposed on the front and rear sides of the cage lower frame 5 is integrated. The three emergency stop operating shafts 7a are simultaneously rotated by the connecting rod 15, and the three emergency stop devices 6 are operated.
Although not shown, the guide shoe 10a attached to the car upper frame 4 is located directly above the emergency stop device 6 disposed on the rear side of the car upper frame 4.
In this case, it is desirable to match the position of the center of gravity of the elevator car with the center of the suspension vehicle 12 and the car frame.

  A lift-type elevator car frame device according to Embodiment 2 of the present invention is a horizontally long shape that is orthogonal to the front-rear direction of the car floor 2 and is fixed rearward by a predetermined dimension from a center line passing through the center of the front-rear direction. The cage lower frame 5, a pair of suspension wheels 12 disposed inside both ends of the cage lower frame 5, two emergency stop devices 6 disposed on the front side surface of the cage lower frame 5, and the cage Since the safety device 6 is provided on the rear side of the lower frame 5, the hoisting rope 11 and the safety device 6 are arranged back and forth around the center line, and the suspension balance of the elevator car 1 is provided. And the wear of the guide shoes 10a and 10b can be kept small.

As shown in FIG. 7A, one guide rail is orthogonal to the side wall of the elevator car 1 and the two guide rails 13 are parallel to the side wall of the elevator car 1 and face each other. It may be arranged so as to.
Further, as shown in FIG. 7B, the two guide rails 13 may be arranged as in the first embodiment, and the remaining one may be arranged so as to be orthogonal to the rear wall of the elevator car 1.

Embodiment 3 FIG.
FIG. 8 is a plan view showing a basic configuration of a lift-up type elevator car frame device according to Embodiment 3 of the present invention.
The lift-up type elevator car frame device according to Embodiment 3 of the present invention includes four guide rails 13 and includes an emergency stop device 6 and a guide shoe 10b for each guide rail 13.
The two safety devices 6 are arranged on the front side of the car lower frame 5, and the two safety devices 6 are arranged on the rear side of the car lower frame 5.
The emergency stop operating shaft 7a of the emergency stop device 6 disposed on the front and rear sides of the cage lower frame 5 is integrated. The four emergency stop operating shafts 7a are simultaneously rotated by the connecting rod 15, and the four emergency stop devices 6 are operated.

  A lift-type elevator car frame device according to Embodiment 3 of the present invention is a horizontally long shape that is orthogonal to the front-rear direction of the car floor 2 and is fixed rearward by a predetermined dimension from a center line passing through the center of the front-rear direction. The cage lower frame 5, a pair of suspension wheels 12 disposed inside both ends of the cage lower frame 5, two emergency stop devices 6 disposed on the front side surface of the cage lower frame 5, and the cage Since two emergency stop devices 6 are provided on the rear side of the lower frame 5, the hoisting rope 11 and the emergency stop device 6 are arranged back and forth around the center line, and the suspension balance of the elevator car 1 And the wear of the guide shoes 10a and 10b can be kept small.

  1 Elevator basket, 2 basket floor, 3 basket frame column, 4 basket upper frame, 4a door opening device girder, 4b mounting bracket, 5 cage lower frame, 5a notch, 5b basket frame mounting bracket, 5c inspection port, 6 emergency Stopping device, 6a wedge-shaped emergency stop braking body, 6b pressing body, 6c roller, 6d operating arm, 6e emergency stop support bracket, 7 operating lever, 7a operating shaft, 7b rope gripping part, 8 governor rope, 9a shock absorber, 9b Contact plate, 10a, 10b Guide shoe, 11 Hoisting rope, 12 Suspension wheel, 12a shaft, 13 Guide rail, 15 Connecting rod, 16 Speed governor.

Claims (3)

In a lift-type elevator car frame device in which guide rails are erected on both side walls in the hoistway,
A horizontally long cage lower frame that is orthogonal to the front-rear direction of the cage floor and is fixed rearward by a predetermined dimension from a center line passing through the center of the front-rear direction;
A pair of suspension wheels disposed inside both ends of the basket lower frame;
An emergency stop device disposed on the front side of the basket lower frame;
With
A lift-up type elevator car frame device, wherein the guide rail is disposed so as to correspond to the emergency stop device. A brake actuating arm for actuating a wedge-shaped emergency stop brake provided in the emergency stop device;
An operation lever that operates by stopping the governor by grasping a governor rope hung on the governor;
With
The lift-type elevator car frame device according to claim 1, wherein the brake body operating arm and the operating lever are fixed to the same operating shaft. A plurality of the guide rails,
A connecting device for connecting and cooperating with the safety device;
A lift-up type elevator car frame device according to claim 1 or 2, further comprising:

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