JPH09286574A - Elevator device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify a total unit constitution, by connecting one end side of a cable in a hoist device to a fixed side frame wound to a fixed/moving pulley, and guiding the other end side to a pulley, arranged in an upper part of a building body, folded back downward, and connecting to the upper surface side of a car. SOLUTION: A hydraulic cylinder device 4 moving a moving shaft 74 journalling a moving pulley 75 of a hoist device W is assembled as a condition integrally connecting a cylinder 40 thereof to a car 2. By extruding action of an in/out operating piston rod 41, journalling a fixed shaft 71 fixedly provided relating to the car 2, by press opening between a fixed pulley 72 and the moving pulley 75 journalled to the moving shaft 74, a cable 3 is wound in to the hoist device W formed by this moving pulley 75 and the fixed pulley 72. Here, relating to an extrusion distance of the piston rod 41, the cable 3 of length about two times a number of winding turns of the cable 3 wound to the moving/fixed pulley 75, 72 is wound in.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is an improvement of an elevator device constructed such that a car on which a person can get in and out is mounted on a building frame so that the car can be lifted and lowered, and the car is lifted and lowered by the operation of a hoist. Regarding

More specifically, the elevator device to which the present invention is applied is called a home elevator and is an elevator having a lift of about 2 to 4 floors, which is mainly installed in a house.

[0003]

2. Description of the Related Art Generally, the above-mentioned elevator apparatus mainly installed in a house is constructed by driving concrete a foundation a into the lower end of the space where the elevator of the building frame is installed, as shown in FIG. A guide frame 1 having a height corresponding to the lifting height is erected on the top, and a car 2 on which a person can get on and off is assembled to the guide frame 1 so as to be able to move up and down, and a cable 3 is attached to the top surface of the top plate of the car 2. Pulleys b and b in which one end side of the guide frame 1 is connected and the other end side of the cable 3 is provided on the top of the guide frame 1 or the building frame.
Through the guide frame 1 downwardly, and is connected to the drum of the hoisting device W provided adjacent to the guide frame 1 on the foundation a, and the hoisting device W drives the motor M. It is configured such that the car 2 is moved up and down by being operated.

[0004]

In the elevator device of the type used for the above-mentioned housing, the lifting operation of the elevator device is performed by operating the hoisting device W by the drive of the motor M. In the event of an emergency such as a fire or power failure, the power may be cut off and it may become trapped in the middle of the floor, making it difficult to implement safety measures for an emergency escape in such a case.

In order to allow a person who is inside the car 2 to operate the car 2 in an emergency to lower the car 2 in an emergency, the lifting operation of the car 2 is performed by a hydraulic cylinder. Let the device do it,
The hydraulic pressure of that hydraulic circuit can be released by operating the handle cock from the inside of the car 2. To do so, even when the lift of the elevator is set to about the third floor. , The hydraulic cylinders must be combined and assembled in multiple stages of 3 to 4 stages, which significantly increases the cost and allows the hydraulic pressure to be released from the inside of the elevator car 2. In this case, the handle cock provided in the car 2 and the hydraulic cylinder must be connected by a hydraulic hose having a length that allows the car 2 to move up and down, which complicates the configuration of the hydraulic circuit. Comes out.

The present invention has been made in order to solve the above-mentioned problems that have occurred in the conventional means, and a person who gets into the car 2 at the time of an emergency when the power is cut off from inside the car 2 Use the operation of to drop the car 2 urgently,
It is a simple hydraulic circuit that enables you to escape safely.
Moreover, it is an object of the present invention to provide a new means that enables the hydraulic cylinder to be lightweight and small in size, and also to simplify the overall configuration and achieve the cost reduction.

[0007]

In the present invention, as means for achieving the above-mentioned object, a fixed frame 70 is axially supported by a fixed frame 70 on the outer surface of the car 2 which can be raised and lowered with respect to the building frame. A hydraulic cylinder device for supporting the stationary frame 70 of the hoisting device W, which includes a pulley 72, a moving pulley 75 pivotally supported by the moving frame 73, and a cable 3 wound around them, and driving the hoisting device W. Four
The base end side of the cylinder 40 is supported, and the moving side frame 73 of the hoisting device W is supported on the tip end side of the piston rod 41 that fits in and out of the cylinder 40.
The cable 3 of No. 3 is wound around a fixed pulley 72 ... And a moving pulley 75 ... by connecting one end of the cable 3 to the fixed frame 70, and the other end of the cable 3 is arranged on the upper part of the building frame.
The present invention proposes an elevator device characterized in that it is guided to 1.31 and folded back to be linked to the upper surface side of the car 2.

[0008]

The means of the present invention having the above-described structure is the hoisting device W.
Of the hydraulic cylinder device 4 for moving the moving shaft 74 that supports the moving pulleys 75 of FIG. Of the fixed pulley 72 that is rotatably supported by the fixed shaft 71 fixed to the car 2 by the pushing operation of
And the movable pulleys 75 pivotally supported on the movable shaft 74 are expanded to push the movable pulleys 75 and the fixed pulleys 7.
The cable 3 is wound into the hoisting device W formed by 2 ..., and at that time, with respect to the pushing distance D of the piston rod 41, the movement of the cable 3 wound around the moving pulley 75 and the fixed pulley 72. The cable 3 having a length L which is twice the number of windings is wound.

That is, in the case where the movable pulleys 75 ... And the fixed pulleys 72 ... Are parallel-supported by two sets each in parallel and wound around the cable 3 so as to reciprocate twice, the piston rod 4
A cable having a length L that is four times the extrusion distance D of 1 is rolled up, and the moving pulley 75 ... and the fixed pulley 72 ...
When the cables 3 are rotatably supported in parallel and wound so as to reciprocate four times, the cable 3 having a length L which is eight times the push-out distance D of the piston rod 41 is wound. With the small hydraulic cylinder device 4 having a stroke of 41 which is not so long, the car 2 can be moved up and down to the height of the number of floors of the third to fourth floors.

In addition, the piston front chamber 40 in the cylinder 40
The emergency cock 6 provided in the middle of the communication conduit 5 connecting the a and the piston rear chamber 40b is assembled to the car 2 so that it can be manually operated in the car 2, so that it can be performed with a remarkably simple structure. Become.

The hydraulic cylinder device 4 for operating the hoisting device W, the electric motor M for driving the hydraulic cylinder device 4, the hydraulic pump P, the control valve device V, the hydraulic tank T, and other hydraulic pressure generating devices are used as the hydraulic unit U in the car 2. It will be possible to assemble them integrally or integrally, and it becomes possible to simplify the on-site construction.

[0012]

Next, an embodiment will be described in detail with reference to the drawings. In the drawings, the same reference numerals are used for components having the same effects as those of the conventional means.

FIG. 2 is a schematic perspective view of the entire elevator apparatus E for carrying out the present invention. In FIG. 2, 1 is a guide constructed at a place corresponding to the lift of a building frame elevator at a place where the elevator should be installed. A frame 2 is a cage for allowing the guide frame 1 to be vertically moved, and 3 is a cage 2
, A cable having one end connected to the upper surface of the cable, W is a hoisting device for hoisting and unwinding the cable 3, 4 is a hydraulic cylinder device that drives the hoisting device W, and U is a hydraulic cylinder device 4. A hydraulic unit 5 for generating a hydraulic pressure to be generated is a communication conduit for directly communicating the piston front chamber 40a and the piston rear chamber 40b in the cylinder 40 of the hydraulic cylinder device 4, and 6 is provided in the middle of the communication pipe 5. Show the cock.

The guide frame 1 is constructed by assembling and supporting a guide wheel 20 provided on the outer wall surface of the cage 2 which is assembled in a columnar shape by using an iron material, and is erected and supported by the guide rail 10.
When the building frame is constructed of reinforced concrete, it is formed integrally with the building frame and the guide rail 1
You may try assembling 0.

The car 2 for allowing the guide frame 1 to vertically guide is an ordinary one having an opening / closing door 21 for getting on and off the front side (left side in FIG. 3). One end side of a cable 3 that suspends the car 2 so that it can be raised and lowered is linked.

The cable 3 is guided to the pulleys 31 and 31 which are mounted on the top of the guide frame 1 or the upper part of the building frame by the mounting bracket 30, and is guided to the hoisting device W from which the car 2 is moved up and down. , The hoisting device W
Are driven by the hydraulic cylinder device 4.

In the hoisting device W, fixed pulleys 72 are supported on a fixed shaft 71 provided on the fixed side frame 70, and a moving shaft 74 provided on a movable side frame 73 that is movable with respect to the fixed pulleys 72.
By winding the cable 3 whose one end side is connected to the fixed side frame 70 so as to be sequentially folded around the movable pulley 75 that can be pivotally supported above, and moving the movable pulley 75 in a direction in which it is separated from the fixed pulley 72. Move the other end of the cable 3 to the pulley 75
It is in the form of an ordinary pulley device that is wound between the fixed pulley 72 and the fixed pulley 72.

The stationary frame 70 of the hoisting device W is connected to the lower end of the outer surface of the car 2 integrally with the car 2, to which the movable pulley 7 is attached.
A movable shaft 74 that supports 5 ... Is supported, and the fixed-side frame 70 is connected and supported by the base end side of the cylinder 40 of the hydraulic cylinder device 4 that operates the hoisting device W.

Further, the moving shaft 7 which supports the moving pulleys 75 ...
The moving-side frame 73 that supports 4 is supported on the tip end side of a piston rod 41 that fits in and out of the cylinder 40 of the hydraulic cylinder device 4, whereby the hydraulic cylinder device 4 mounts the piston rod 41. By operating so as to push out, the movable pulley 75 ... with respect to the fixed pulley 72 ...
Are separated from each other so that the other end side of the cable 3 is wound, and the other end side of the cable 3 is attached to the top portion of the guide frame 1 or the ceiling portion of the building frame described above.
It is guided to 1.31 and folds downward through them, and is connected to the upper surface side of the car 2.

Therefore, when the hydraulic cylinder device 4 operates,
When the piston rod 41 thereof is pushed out, the moving pulleys 75 ... Move upwards away from the fixed pulleys 72 ..

A hoisting device W using the hydraulic cylinder device 4
In the case where the fixed pulleys 72 ... And the movable pulleys 75 ... are parallel-supported by two parallel shafts, respectively, and the cable 3 is wound so as to reciprocate twice (twice), With respect to the distance D by which the piston rod 41 of the cylinder device 4 is pushed out, the winding length L of the cable 3 of the hoisting device W is four times, that is, L = 2 ² = 4D, and the length is fixed. When the pulleys 72 ... And the movable pulleys 75 ... are respectively supported in parallel in three rows and wound around the cable 3 so as to make three reciprocations, the number of windings of the cable 3 with respect to the pushing distance D of the piston rod 41 is increased. The length L obtained by multiplying by 2 is further doubled, that is, L = 2 ³ = 8D, and the cable 3 is wound by the length of 8 times.

In the hydraulic cylinder device 4, as shown in FIGS. 3 and 5, the piston 42 fitted in the cylinder 40 is hydraulically moved to the piston front chamber 40a and the piston rear chamber 40b in the cylinder 40. By applying the hydraulic pressure generated by the hydraulic unit U, which is a generator, to the piston 4
Although the piston rod 41 connected to the 2 is a normal one, the base end portion of the cylinder 40 of the piston rod 41 is mounted on the outer surface of the rear side of the car 2 and is fixedly supported by the fixed frame 70. The cylinder 40 is integrally mounted on and supported by the car 2 by being supported on the fixed shaft 71 which is a support shaft of.

The piston front chamber 40a and the piston rear chamber 40b in the cylinder 40 are connected to the hydraulic circuit 8 of the hydraulic unit U as shown in FIG.
Controlling the supply of hydraulic pressure to the piston front chamber 40a and the piston rear chamber 40b of the cylinder 40 by operating a control valve device V, which is connected via 80 and is incorporated in the hydraulic unit U, by operating an operation lever or an operation switch. By that,
The hydraulic cylinder device 4 is operated, and the hydraulic unit U thereof is assembled and supported on the upper surface of the ceiling of the car 2 as shown in FIG. 5, or by supporting the hydraulic unit U at an appropriate place on the outer surface of the car 2. It is mounted on the outer surface of the car 2, so that both the hydraulic cylinder device 4 and the hydraulic unit U for driving it are integrally mounted on the car 2, and the hydraulic circuit 8 for connecting them is provided. The arrangement of the hydraulic hose is simplified.

Further, the cylinder 40 of the hydraulic cylinder device 4
The hydraulic pipeline 80 and the hydraulic pipeline 80, which are connected to the piston front chamber 40a and the piston rear chamber 40b, are connected to the communication pipeline 5 for directly communicating them as shown in FIG. Then, in the middle of that, a cock 6 that can cut off communication and an orifice 5 that appropriately throttles the flow rate of the oil that flows through
0, and a handle 60 for manually operating the cock 6 is disposed inside the car 2, and by operating the handle 60, the hydraulic pressure in the piston rear chamber 40b in the cylinder 40 is released, The operation of performing an emergency descent by the operation from is achieved with a remarkably simple hydraulic piping configuration.

The above-mentioned hydraulic unit U comprises an electric motor M, a hydraulic pump P driven by the electric motor M, a control valve device V, a hydraulic tank T, and a hydraulic circuit 8. As shown in the hydraulic circuit diagram of FIG. 6, the hydraulic line 80 and the piston rear chamber 40 to which the aforementioned hydraulic cylinder device 4 is connected and which is connected to the piston front chamber 40a thereof.
In the communication conduit 5 that directly communicates with the hydraulic conduit 80 connected to b, the handle 6 disposed inside the car 2 is provided.
A cock 6 is provided for performing an emergency descent of the car 2 by operating 0.

Further, the control valve v of the control valve device V for performing the switching operation of the hydraulic circuit 8 is a solenoid valve having a function of preventing the natural fall in cooperation with the check valve 81, and the operation switch thereof is of the car 2. It is installed indoors.

[0027]

According to the means of the present invention configured as described above, the hydraulic cylinder device 4 for moving the moving shaft 74, which supports the moving pulleys 75 of the hoisting device W, has its cylinder 40 integrated with the car 2. Are assembled as a mechanically connected state, and
By pushing the piston rod 41 in and out, the car 2
The fixed pulley 72 fixed to the fixed pulley 71 and the movable pulley 75 pivotally supported on the movable shaft 74 are expanded and fixed to the movable pulley 75. The cable 3 is attached to the hoisting device W formed by the pulleys 72.
The car 2 and raise the car 2 to move the piston rod 41
Since the cable 3 is drawn out and lowered by the weight of the car 2 by the retracting operation of the car 2, the hydraulic pipeline is remarkably simplified, and moreover, with respect to the pushing distance D of the piston rod 41, the movable pulley 75 ... A small hydraulic cylinder device in which the stroke of the piston rod 41 is not so long because the cable 3 having a length L that is the square of the number of windings of the cable 3 wound around the fixed pulley 72 and the fixed pulley 72 is wound. At 4, the car 2 can be moved up and down to the height of the third to fourth floors.

In addition, the operation of lowering the car 2 in an emergency such as a power outage is performed by using the emergency cock 6 provided in the middle of the communication conduit 5 connecting the piston front chamber 40a and the piston rear chamber 40b in the cylinder 40. By manually operating in 2, the operation can be surely performed with a remarkably simple structure.

Further, the hydraulic cylinder device 4 for operating the hoisting device W, the electric motor M for driving the hydraulic cylinder device 4, the hydraulic pump P, the control valve device V, and the hydraulic pressure generating device such as the hydraulic tank T are used as the hydraulic unit U in the car 2. It will be possible to assemble them integrally or integrally, and it becomes possible to simplify the on-site construction.

[Brief description of drawings]

FIG. 1 is a schematic perspective view of an entire conventional elevator apparatus for a house.

FIG. 2 is a schematic perspective view of an entire elevator device for a house in which the present invention is implemented.

FIG. 3 is a vertical sectional side view of a main part of the above elevator device.

FIG. 4 is an explanatory diagram of a lifting operation of the elevator device of the above.

FIG. 5 is an enlarged vertical sectional side view of a main part of the above elevator device.

FIG. 6 is a hydraulic circuit diagram of the above elevator device.

[Explanation of symbols]

E ... Elevator device, W ... Hoisting device, M ... Electric motor, P ... Hydraulic pump, T ... Hydraulic tank, U ... Hydraulic unit, V ... Control valve device, D ... Extrusion distance, L ... Length, a ... Foundation , B ... pulley, v ... control valve, 1 ... guide frame, 10
... guide rail, 2 ... basket, 20 ... guide wheel, 21 ... open / close door, 3 ... cable, 30 ... mounting bracket, 31 ... pulley, 4
... hydraulic cylinder device, 40 ... cylinder, 40a ... piston front chamber, 40b ... piston rear chamber, 41 ... piston rod, 42 ... piston, 5 ... communication conduit, 50 ... orifice, 6 ... cock, 60 ... handle, 70 ... Fixed side frame, 71 ... Fixed shaft, 72 ... Fixed pulley, 73 ... Moving side frame, 74 ... Moving shaft, 75 ... Moving pulley, 8 ... Hydraulic circuit,
80 ... Hydraulic line, 81 ... Check valve.

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[Procedure amendment]

[Submission date] June 17, 1996

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0007

[Correction method] Change

[Correction contents]

[0007]

In the present invention, as means for achieving the above-mentioned object, the outer surface of the car 2 which can be raised and lowered with respect to the building frame is pivotally supported on the fixed side frame 70. The fixed-side frame 70 of the hoisting device W including the fixed sheaves 72, the movable sheaves 75 that are rotatably supported by the moving-side frame 73, and the cable 3 wound around them is supported, and the hoisting device W is driven. The base end side of the cylinder 40 of the hydraulic cylinder device 4 is supported, and the moving side frame 73 of the hoisting device W is supported on the tip end side of the piston rod 41 that fits in and out of the cylinder 40. One end of the cable 3 of W is connected to the stationary frame 70, and the stationary pulley 72 and the movable pulley 7 are connected.
5 ... and the other end of it is guided to the pulleys 31 and 31 arranged at the upper part of the building frame and folded back to the bottom.
The elevator device is characterized in that it is connected to the upper surface side of the elevator.

[Procedure amendment 4]

[Document name to be amended] Drawing

[Correction target item name] Figure 2

[Correction method] Change

[Correction contents]

[Fig. 2]

[Procedure Amendment 5]

[Document name to be amended] Drawing

[Correction target item name] Figure 3

[Correction method] Change

[Correction contents]

[Figure 3]

[Procedure correction 6]

[Document name to be amended] Drawing

[Correction target item name] Fig. 4

[Correction method] Change

[Correction contents]

FIG. 4

Claims (3)

[Claims] 1. A stationary pulley 72 pivotally supported by a stationary frame 70 on the outer surface of a car 2 which can be raised and lowered relative to a building frame.
A cylinder of the hydraulic cylinder device 4 that supports the fixed side frame 70 of the hoisting device W, which includes the movable sheaves 75 that are axially supported by the moving side frame 73 and the cable 3 that is wound around them, and that drives the hoisting device W. The base side of 40 is supported, and the moving side frame 73 of the hoisting device W is supported on the tip side of the piston rod 41 that fits in and out of the cylinder 40, and the cable 3 of the hoisting device W is One end side of which is connected to the fixed side frame 70 and is wound around a fixed pulley 72 and a movable pulley 75, and the other end side thereof is guided to the pulleys 31 and 31 arranged on the upper part of the building frame and is moved downward. An elevator device, which is folded back and connected to the upper surface side of the car 2. 2. A fixed pulley 72 pivotally supported by a fixed side frame 70 on the outer surface of a car 2 which can be raised and lowered with respect to a building frame.
A cylinder of the hydraulic cylinder device 4 that supports the fixed side frame 70 of the hoisting device W, which includes the movable sheaves 75 that are axially supported by the moving side frame 73 and the cable 3 that is wound around them, and that drives the hoisting device W. The base side of 40 is supported, and the moving side frame 73 of the hoisting device W is supported on the tip side of the piston rod 41 that fits in and out of the cylinder 40, and the cable 3 of the hoisting device W is One end side of which is connected to the fixed side frame 70 and is wound around a fixed pulley 72 and a movable pulley 75, and the other end side thereof is guided to the pulleys 31 and 31 arranged on the upper part of the building frame and is moved downward. It is folded back and connected to the upper surface side of the car 2, and on the outer surface side of the car 2, a hydraulic unit U for assembling a hydraulic pressure generating device such as an electric motor M, a hydraulic pump P, a control valve device V, and a hydraulic tank T is supported. Hydraulic times Control valve v 8 to the hydraulic cylinder device 4
An elevator device, characterized in that an operating lever or an operating switch for operating the control valve v, which is communicated via the vehicle, is provided inside the car 2. 3. A fixed pulley 72 pivotally supported by a fixed frame 70 on the outer surface of a car 2 which can be raised and lowered with respect to a building frame.
A cylinder of the hydraulic cylinder device 4 that supports the fixed side frame 70 of the hoisting device W, which includes the movable sheaves 75 that are axially supported by the moving side frame 73 and the cable 3 that is wound around them, and that drives the hoisting device W. The base side of 40 is supported, and the moving side frame 73 of the hoisting device W is supported on the tip side of the piston rod 41 that fits in and out of the cylinder 40, and the cable 3 of the hoisting device W is One end side of which is connected to the fixed side frame 70 and is wound around a fixed pulley 72 and a movable pulley 75, and the other end side thereof is guided to the pulleys 31 and 31 arranged on the upper part of the building frame and is moved downward. It is folded back and connected to the upper surface side of the car 2, and on the outer surface side of the car 2, a hydraulic unit U for assembling a hydraulic pressure generating device such as an electric motor M, a hydraulic pump P, a control valve device V, and a hydraulic tank T is supported. Hydraulic times Control valve v 8 to the hydraulic cylinder device 4
Is provided with a communication pipe 5 that directly communicates the piston front chamber 40a and the piston rear chamber 40b of the cylinder of the hydraulic cylinder device 4 with a cock 6 for interrupting the communication. An elevator device, wherein a handle 60 for emergency lowering of the car 2 by manually opening the car is disposed inside the car 2.