JPH06234480A - Compensating rope tension pulley device for elevator - Google Patents

Abstract

PURPOSE:To provide a compensating rope tension pulley device for an elevator wherein a tension pulley is follow-up displaced against extending/contracting a compensating rope or the like to prevent the tension pulley from springing up at the time of quick stopping a car or the like. CONSTITUTION:A tension pulley 12, provided in a condition astride a curved part 7 of a compensating rope 6, is pivotally mounted to a vertically moving frame unit 10. Damper units 24 having a piston 26, displaced in a horizontal direction, are provided in the frame unit 10, and a guide rail 9 having slopes, engaged with the pistons 26 to tilt in a direction of actuating the pistons 26 from a lower part to an upper part, is vertically provided in a lower part of a lift path 1. Thus at the time of extending/contracting the compensating rope 6 or the like, the frame unit 10 is follow-up displaced, and springing up the tension pulley 12 at abnormality time is restricted by action of the damper units 24. Thus even when the compensating rope is extended/contracted by aging, an elevator can be normally operated, and a trouble generated by springing up the tension pulley at abnormality time can be prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a compensating rope tensioning device for an elevator, both ends of which are connected to a car and a counterweight and suspended.

[0002]

2. Description of the Related Art FIG. 7 and FIG.
FIG. 7 is a diagram showing a conventional rope compensating rope tensioning device for an elevator shown in Japanese Patent Publication No. 03156, FIG. 7 is a conceptual vertical cross-sectional view of the elevator device, and FIG. 8 is an enlarged view of the tensioning part of FIG. 7. In the figure, (1) is a hoistway of an elevator, (2) is a hoisting machine installed on the hoistway (1), (3) is a hoisting machine (2), and a car ( 4), counterweight to the other end (5)
Each of the main ropes (6) is hung from the car (4) and the counterweight (5) with both ends connected to the car (4) to form an intermediate curved portion (7). ) Is a compensating rope placed at the bottom of the hoistway (1), (8) is the bottom of the hoistway (1), that is, a beam horizontally installed on the bottom, and (9) is erected from the beam (8). The guide rails are arranged parallel to each other.

Reference numeral (10) is a frame body movably engaged with the guide rail (9) by a guide tool (11) provided on the outer surface, and (12) is a frame body.
Compensation rope installed inside (10) and pivoted on frame (10)
A tensioning wheel arranged in a straddled state on the curved portion (7) of (6), (13) is provided by pinching the guide rail (9), and its upper surface contacts the lower surface of the upper guide tool (11). The stoppers (14) are springs that pinch the stoppers (13) to the guide rails (9), and (15) has the upper end pivotally attached to the stoppers (13) and the guide rails (9) hang down. Bars arranged on both sides of the roller, (16) is a roller pivotally supported at the lower end of the bar (15), (17) is a holding metal fitting projecting from the outer surface of the frame (10), A contact surface (18) is provided facing the opposite guide rail (9) side and having an upper end that is an inclined surface inclined in a direction away from the guide rail (9).

(19) is a stopper (13), a spring (14), a bar (1)
5), a lock device composed of rollers (16) and grips (17), (20) a cam protruding from the stopper (13) of the lock device (19), and (21) a frame (10) Is provided on the cam
With the elevator stop switch disposed at a distance A shown in FIG. 8 below the (20), when the frame body (10) rises by a distance A or more from the state shown in FIG. 8, the switch hits the cam (20).

The conventional elevator compensating rope tensioning device is constructed as described above, and includes a car (4) and a counterweight.
(5) When one side is descending and sudden braking is applied,
The other tries to jump up due to inertia. At this time, a jumping action also occurs in the tension vehicle (12) via the compensating rope (6). However, when the tensioning wheel (12) goes up a little, the contact surface (18) of the gripper (17) causes the guide rail (9) and the (1)
6), the gap between the roller (16) and the contact surface (18) immediately becomes zero.

As a result, the guide rail (9), the roller (16) and the contact surface (18) are engaged with each other to prevent the tensioning wheel (12) from further rising, and the car (4) and the counterweight are counterbalanced. The other jump of (5) is suppressed. It should be noted that jumping up of the car (4) and the like increases particularly in a high-lift elevator.

The distance that the tensioning wheel (12) moves from when the tensioning wheel (12) starts to rise to when the tensioning wheel (12) stops is within a range in which the locking device (19) does not operate when the tension wheel (12) moves upward due to inertia when the elevator is started and stopped. By minimizing the gap between the roller (16) and the contact surface (18), jumping up of the car (4) or the counterweight (5) can be minimized.

Here, the main rope (3) and the compensating rope (6) extend during long-term use, and the tensioning wheel (12) descends, but the gap between the roller (16) and the contact surface (18). Is configured so that it does not become wide. That is, the contact surface between the stopper metal fitting (13) and the guide rail (9) does not come off due to the weight of the lock device (19), and the weight of the tension vehicle (12) does not fall due to the weight of the lock device (19). The spring (15) is compressed so that a frictional force is generated such that it slides down when applied. As a result, when the main rope (3) and the compensating rope (6) are stretched, the weight of the tensioning wheel (12) is added to the fastener (13), and the tensioning wheel (12) and the locking device (19) together. Then, the lock device (19) moves downward by the amount of extension of the main rope (3) and the compensation rope (6) and stops. Therefore,
The mutual position of the roller (16) of the lock device (19) and the holding metal fitting (17) protruding from the frame body (10) of the tension wheel (12) is always kept constant.

[0009]

In the conventional elevator compensating rope tensioning device for an elevator as described above, the tensioning wheel (12) descends and follows the extension of the main rope (3) and the compensating rope (6). . However, due to changes in environmental conditions such as changes in temperature,
Locking device (19) if (3) and compensating rope (6) contract
Since it is fixed, it does not follow the rise of the tension wheel (12). Therefore, when the main rope (3) and the compensation rope (6) contract over time, the elevator stop switch (2
1) operates and the elevator stops abnormally. For this reason,
There was a problem that the safe and accurate operation of the elevator was hindered because passengers were trapped in the car (4).

The present invention has been made in order to solve the above problems, and the tensioning wheel is displaced following the expansion and contraction of the main rope and the compensating rope over time, and the car or the like suddenly stops. It is an object of the present invention to provide a compensator rope tensioning device for an elevator that can prevent the tensioning vehicle from jumping up in the event of abnormalities.

[0011]

In a compensating rope tensioning device for an elevator according to a first aspect of the present invention, both ends are respectively connected to a car and a counterweight of the elevator and suspended in a hoistway of the elevator. A compensating rope that is lowered and forms a curved portion that is arranged in the lower part of the hoistway in the middle part, a tensioning wheel that is installed in a straddle state on the bending portion of this compensation rope, and a tensioning wheel that is arranged in the bending portion A held frame body, a damper device provided with pistons mounted on the frame body and displaced in the horizontal direction, and arranged so that the pistons face each other, and a piston of the damper device installed upright from the lower part of the hoistway. A guide rail that is disposed between the two and that engages with the piston so as to be movable in the vertical direction, and that has a slope inclined in the direction of retracting the corresponding piston from the bottom to the top. Eclipsed.

Further, in the elevator compensating rope tensioning device according to the second aspect of the present invention, both ends are connected to the elevator car and the counterweight, respectively, and are suspended in the hoistway of the elevator, and the middle portion is suspended. A compensating rope that forms a bend in the lower part of the hoistway,
A tensioning wheel that is provided in a straddling state on the curved portion of the compensating rope, a frame body that is disposed on the bending portion and that supports the tensioning wheel, and projecting ends that are respectively provided so as to project from side surfaces of the frame body that face each other. And a damper device provided with a horizontally displacing piston, and a vertically movably engaged lower end of the hoistway corresponding to each of the damper devices to a protruding end of the piston of the damper device so as to move vertically. And a guide rail having an inclined surface inclined in a direction in which the corresponding piston is retracted upward.

Further, in the elevator compensating rope tensioning device for an elevator according to the third aspect of the present invention, both ends are connected to the elevator car and the counterweight, respectively, and suspended in the elevator hoistway to form an intermediate portion. A compensating rope that forms a bend in the lower part of the hoistway,
A tensioning wheel that is provided in a straddle state on the curved portion of the compensating rope, a frame body that is arranged on the bending portion and pivotally supports the tensioning wheel, and a piston that is mounted on the frame body and that is displaced in the horizontal direction are provided. A damper device, a transmission mechanism provided on the frame for transmitting the operation of the piston of the damper device to a distant position along the surface of the frame, and an upright position from the bottom of the hoistway to the top end of the transmission mechanism in the vertical direction. There is provided a guide rail that is movably engaged and that has a slope inclined from a lower portion to an upper portion in a direction in which the piston is operated via a transmission mechanism.

Further, in the elevator compensating rope tensioning device according to the fourth aspect of the present invention, both ends are connected to the elevator car and the counterweight, respectively, and are suspended in the hoistway of the elevator, and the intermediate portion is hung. A compensating rope that forms a bend in the lower part of the hoistway,
A tensioning wheel that is provided in a straddle state on the curved portion of the compensating rope, a frame body that is arranged on the bending portion and pivotally supports the tensioning wheel, and a piston that is mounted on the frame body and that is displaced in the horizontal direction are provided. And the damper device, which is erected from the lower part of the hoistway, restrains the horizontal displacement of the tip end of the piston of the damper device within a predetermined range, and the tip end of the piston is movably engaged in the vertical direction to form the frame body. A guide rail is provided that is formed with an inclined surface that guides and inclines in the direction of retracting the piston from the lower part to the upper part.

Further, in the elevator compensating rope tensioning device for an elevator according to the fifth aspect of the present invention, both ends are connected to the elevator car and the counterweight, respectively, and are suspended in the elevator hoistway, and the intermediate portion is hung. A compensating rope that forms a bend in the lower part of the hoistway,
A tensioning wheel that is provided in a straddle state on the curved portion of the compensating rope, a frame body that is arranged on the bending portion and pivotally supports the tensioning wheel, and a piston that is mounted on the frame body and that is displaced in the horizontal direction are provided. The damper device, the detector that detects the pressure fluctuation of the liquid enclosed in this damper device and outputs the output of the elevator abnormal control, and the tip of the piston of the damper device that is erected from the bottom of the hoistway. Engage movably in the vertical direction,
A guide rail having a slope inclined from the lower portion to the upper portion in the direction of retracting the piston is provided.

[0016]

In the invention according to claim 1 of the present invention configured as described above, with respect to expansion and contraction of the main rope and the compensation rope,
The frame and the tension wheel follow and are displaced. Further, when an abnormality such as a sudden stop of a car or the like occurs, the jumping of the tensioning vehicle is restrained by the action of the damper device engaged with the guide rail.

In the invention according to claim 2 of the present invention configured as described above, the frame body and the tension wheel are displaced following the expansion and contraction of the main rope and the compensation rope. Also,
In case of an abnormal situation such as a sudden stop of a car or the like, against the jump of the tension vehicle, the jump of the tension vehicle is restrained by the action of the damper devices engaged with the guide rails arranged on both sides of the frame body.

In the invention according to claim 3 of the present invention configured as described above, the frame and the tension wheel are displaced following the expansion and contraction of the main rope and the compensating rope. Also,
In the event of an abnormal situation such as a sudden stop of the car or the like, against the jump of the tension vehicle, the jump of the tension vehicle is restrained by the action of the damper device engaged with the guide rail via the transmission mechanism.

In the invention according to claim 4 of the present invention configured as described above, when the main rope and the compensating rope expand and contract, the frame and the damper device are displaced by being guided by the guide rail. As a result, the tension wheel is displaced following the expansion and contraction of the compensation rope. Further, in the event of an abnormality such as a sudden stop of a car or the like, the jumper of the tensioning vehicle is restrained from jumping up by the action of the damper device.

In the invention according to claim 5 of the present invention configured as described above, the frame body and the tension wheel are displaced following the expansion and contraction of the main rope and the compensating rope. Also,
In the event of an abnormality such as a sudden stop of the car or the like, the damper device acts to restrain the tension vehicle from jumping up. Further, when the tensioning vehicle jumps up in the event of an abnormality such as a sudden stop of the car or the like, the pressure in the cylinder of the damper device rises rapidly and the detector operates.

[0021]

【Example】

Example 1. 1 to 3 are views showing an embodiment of the present invention. FIG. 1 is a view corresponding to an enlarged view of the tensioning portion of FIG. 8 described above, FIG. 2 is an enlarged plan view of FIG. 1, and FIG. FIG. 2 is an enlarged view showing a part of the damper device in FIG. 1 in a vertical section. In the figure,
(1) is a hoistway of the elevator, (6) is not shown in the figure, but both ends are connected to a car and a counterweight, respectively, and suspended, and a curved part (below the hoistway (1) is placed in the middle ( Compensation rope which formed 7), (8) is a lower part of the hoistway (1), that is, a mounting base provided on the bottom surface, and (9) is erected from the mounting base (8) and arranged parallel to each other. The guide rail has a wedge shape in which the width direction is arranged in parallel to the side surface of the frame body described later, the upper part is wider than the lower part, and the longitudinal groove (22) is provided on the end surface in the width direction.

Reference numeral (10) is a frame body movably engaged with a guide rail (9) through a longitudinal groove (22) by a damper device which will be described later, and (12) is a frame body (10). A frame (1
The tensioning wheel (23), which is pivotally supported by (0) and is arranged in a straddling state on the curved portion (7) of the compensation rope (6), is provided horizontally on the side surface of the frame (10) and is guided by the guide rail (9). ) Are fixed bases arranged to face each other.

Reference numeral (24) is a damper device mounted on each of the fixed bases (23), which are cylinders (25) arranged horizontally.
The piston (26) provided on the cylinder (25), the piston (2
From the compression coil spring that biases the roller (27) and the piston (26) that are pivotally supported by the protruding part of (6) and roll in the longitudinal groove (22) of the guide rail (9) and the piston (26) toward the guide rail (9). Elastic body (28), a protrusion (29) formed in the longitudinal middle portion of the piston (26) to reduce the gap with the cylinder (25), and an incompressible material such as oil enclosed in the cylinder (25). The liquid (30) and the cylinder (25) are provided with a detector (31) for detecting a pressure fluctuation of the liquid (30).

In the elevator compensating rope tensioning device configured as described above, the frame body (10) pivotally supporting the tensioning wheel (12) is provided on the side surface and is guided to each other via the guide rail (9). Rollers (27) of the damper device (24) arranged opposite to each other
Is engaged with the vertical groove (22) of the guide rail (9) and guided vertically. For this reason, the frame body (10) moves up and down smoothly with respect to the compensating rope (6) and the like over time and expansion and contraction due to climate change and the like.

However, the tension wheel (12), that is, the frame body (1) that occurs when the elevator car or the like is lowered during an emergency stop, etc.
The jumping phenomenon of (0) is restrained as described below. That is, the gap between the piston (26) and the cylinder (25), the liquid
By properly selecting (30), the damper device (24)
A wedge-shaped guide rail (9) whose upper part is wider than the lower part, that is, the piston of the damper device (24) that corresponds from the lower part to the upper part.
The rise of the frame body (10) is braked by being pressed by the slope inclined in the direction of retracting the (26).

In short, the damper device (24) generates almost no binding force against the gradual expansion and contraction of the compensating rope (6) and the like due to changes in the surrounding environment, and the frame body (10) smoothly moves up and down. Moving. Further, a sudden jump-up phenomenon of the frame body (10) which occurs at the time of an emergency stop of the elevator car or the like is restrained by the action of the damper device (24). Therefore, the tension vehicle (12) moves up and down to follow the extension of the compensating rope (6), and the elevator stops abnormally and passengers are trapped in the car, preventing safe and accurate operation of the elevator. It is possible to prevent the trouble caused.

Further, the sudden jump-up phenomenon of the frame body (10) which occurs at the time of an emergency stop of the elevator car or the like is restrained by the action of the damper device (24), which causes a problem caused by the jump up of the frame body (10). Can be prevented.

Further, with respect to a sudden jump-up phenomenon of the frame body (10) which occurs at the time of an emergency stop of the elevator car or the like, the pressure in the cylinder (25) rises sharply, so this pressure rise is detected. It is possible to perform safety control such as shutting off the elevator power supply and stopping the nearest floor of the car by inputting it to the elevator control device (not shown) detected by the device (31), improving elevator safety. can do.

Further, the roller (27) of the damper device (24) is engaged with the vertical groove (22) of the guide rail (9) to guide the frame body (10) in the vertical direction. Therefore, a guide device for guiding only the frame body (10) is not required, the device configuration can be simplified, and the manufacturing cost can be reduced.

Example 2. 4 and 5 are views showing another embodiment of the present invention. FIG. 4 is a view corresponding to an enlarged view of the tensioning portion of FIG. 1 described above, and FIG. 5 is an enlarged plan view of FIG.
In the figure, (1) is the hoistway of the elevator, (6) is not shown in the figure, but both ends are connected to a car and a counterweight, respectively, and are hung and placed in the middle of the hoistway (1). Compensation rope with curved section (7), (8) is the bottom of hoistway (1), that is, the mounting base provided on the bottom surface, and (9) is the mounting base.
Guide rails that are erected from (8) and are arranged in parallel and apart from each other so as to face the side surfaces of the frame body, which will be described later. A slope that slopes in the direction of the vertical groove (22) is formed on this slope.
Is provided.

The reference numeral (10) is movably engaged with the guide rail (9) through the longitudinal groove (22) by a damper device which is arranged on the side surface and stands upright toward the guide rail (9). Frame,
(12) is a tension wheel provided in the frame body (10), the shaft is pivotally supported on the side surface of the frame body (10), and is arranged in a straddle state on the curved portion (7) of the compensation rope (6), Reference numeral (24) is a damper device which is erected on both side surfaces of the frame body (10) and arranged horizontally, and is a cylinder (25) arranged horizontally, and a piston (26) provided on the cylinder (25). , The roller (27) which is pivotally supported by the protruding portion of the piston (26) and rolls in the longitudinal groove (22) of the guide rail (9), the piston (2
An elastic body (28) consisting of a compression coil spring that urges 6) in the direction of the guide rail (9), and a protrusion (29) formed in the longitudinal middle part of the piston (26) to reduce the gap with the cylinder (25). ) And an incompressible liquid (30) such as oil enclosed in a cylinder (25)
It is composed by.

In the embodiment shown in FIGS. 4 and 5, the tension wheel is also used.
A frame (10) pivotally supporting (12) is provided on a side surface of a roller (2) of a damper device (24) arranged to face the guide rail (9).
It is engaged with the vertical groove (22) of the guide rail (9) by the guide (7) and guided vertically. In addition, the tension wheel (12), that is, the frame body, that occurs when the elevator car or the like is descending in an emergency stop
The jumping phenomenon of (10) is restrained as described below.
That is, the upper part of the guide rail (9) is larger than the lower part of the frame body (10).
A vertical groove (22) is formed on a slope that is inclined toward the side surface. Then, as the frame body (10) rises, the piston (26) of the damper device (24) corresponding to the vertical groove (22) is retracted, whereby the jumping up of the frame body (10) is braked.

Therefore, although detailed description is omitted, FIG.
Also, it is apparent that the embodiment shown in FIG. 5 can obtain the same operation as that of the embodiment shown in FIGS. Further, in the embodiment of FIGS. 4 and 5, the number of damper devices (24) can be reduced as compared with the embodiment of FIGS. 1 to 3, the device configuration can be simplified, and the manufacturing cost can be reduced.

Example 3. FIG. 6 is also a view showing another embodiment of the present invention, and FIG. 6 is a view corresponding to an enlarged plan view of the tension vehicle portion in FIG. 5 described above. In the figure, the same reference numerals as those in FIGS. 4 and 5 indicate corresponding parts, and (32) is erected on the side surface of the frame body (10) and is arranged near the damper device (24) in parallel with the damper device (24). The middle part of the support body (33) is pivotally supported by the support body (32), and is pivotally attached at one end to the tip of the protruding portion of the piston (26) of the damper device (24) and the holding body (34) at the other end. A connecting member pivotally supported, (35) is a transmission mechanism composed of a support (32), a connecting member (33) and a holder (34), and (27) is pivotally attached to a free end of the holder (34). Is a roller that rolls in the vertical groove (22) of the guide rail (9).

The elastic body (28) of the damper device (24) urges the piston (26) in a direction to retract it, whereby the roller (27) is guided through the transmission mechanism (35) to the guide rail (9). ) Is pressed. In addition, the piston (26) of the damper device (24) is
7) is pushed by the guide rail (9), and the transmission mechanism
It is displaced in the advancing direction via (35) to achieve the action of the damper device (24).

Also in the embodiment shown in FIG. 6, the frame body (10) pivotally supporting the tension wheel (12) is provided with the damper device (24) on the side surface thereof and the guide rail (9) via the transmission mechanism (35). ), And by the roller (27) engaged with the vertical groove (22) of the guide rail (9),
You will be guided up and down.

Further, the jumping phenomenon of the tension vehicle (12), that is, the frame body (10), which occurs when the elevator car or the like is lowered during an emergency stop, is restrained as described below. That is, the vertical groove (22) is formed on the slope in which the upper portion of the guide rail (9) is inclined in the direction closer to the side surface of the frame body (10) than the lower portion. Then, as the frame body (10) rises, the vertical groove (22) is provided with rollers (27)
By operating the piston (26) of the corresponding damper device (24) via the transmission mechanism (35), the jump of the frame body (10) is braked.

Therefore, although detailed description is omitted, FIG.
It is apparent that the same effect as that of the embodiment of FIGS. 1 to 3 can be obtained in the embodiment of FIG. In addition, in the embodiment of FIG. 6, the support body (32) is arranged at a proper position in the longitudinal direction of the connecting material (33) to form a frame body.
The displacement corresponding to the amount of vertical movement of (10) can be transmitted to the damper device (24) by enlarging or reducing it. This makes it possible to easily set the restraining force of the vertical movement of the frame body (10) to an appropriate value, and to reduce the size of the damper device (24). In addition, the degree of freedom in arranging the equipment in the lower part of the hoistway can be improved.

[0039]

As described above, according to the first aspect of the present invention, both ends are connected to the elevator car and the counterweight, respectively, and are suspended in the elevator hoistway, and the lower part of the hoistway is in the middle part. A compensating rope that forms a curved portion that is arranged in the curved portion, a tensioning wheel that is provided in a straddle state on the bending portion of the compensating rope, a frame body that is disposed in the bending portion and that supports the tensioning wheel, and the frame body. Mounted on the piston and provided with horizontally displacing pistons, and the pistons are arranged to face each other, and the pistons arranged upright from the lower part of the hoistway are arranged between the pistons of the damper device. A guide rail is provided which is movably engaged in the up-down direction and has an inclined surface inclined from the lower portion to the upper portion in a direction to retract the corresponding piston.

As a result, the frame body and the tension sheave are displaced in accordance with the expansion and contraction of the main rope and the compensation rope. Further, in the event of an abnormality such as a sudden stop of a car or the like, the jumper of the tensioning vehicle is restrained from jumping up by the action of the damper device. Therefore, it prevents the trouble that the safe and accurate operation of the elevator is obstructed, such as the tension wheel moving up and down and following the expansion and contraction of the compensation rope, which causes the elevator to stop abnormally and trap passengers in the car. effective. In addition, the sudden jumping-up phenomenon of the frame that occurs during an emergency stop of the elevator car or the like is restrained by the action of the damper device, which has the effect of preventing problems caused by the upward displacement of the frame.

Further, as described above, the invention according to claim 2 of the present invention is such that both ends thereof are respectively connected to the elevator car and the counterweight and are hung on the elevator hoistway, and the middle part is the lower part of the hoistway. A compensating rope that forms a curved portion that is arranged in the curved portion, a tensioning wheel that is provided in a straddle state on the bending portion of the compensating rope, a frame body that is disposed in the bending portion and that supports the tensioning wheel, and the frame body. Of the piston of the damper device, which are respectively provided so as to project from the opposite side surfaces of the damper device and provided with pistons that are horizontally displaced at their projecting ends, and are installed upright from the lower part of the hoistway corresponding to each of the damper devices. A guide rail is provided, which is movably engaged with the projecting end in the vertical direction and has a slope inclined in a direction in which the corresponding piston is retracted from the lower portion to the upper portion.

As a result, the frame body and the tension sheave are displaced in accordance with the expansion and contraction of the main rope and the compensation rope. Further, when an abnormality such as a sudden stop of a car or the like occurs, the jumping of the tensioning vehicle is restrained by the action of the damper devices engaged with the guide rails arranged on both sides of the frame body. Therefore, it prevents the trouble that the safe and accurate operation of the elevator is obstructed, such as the tension wheel moving up and down and following the expansion and contraction of the compensation rope, which causes the elevator to stop abnormally and trap passengers in the car. effective. Further, the sudden jumping-up phenomenon of the frame body caused by an emergency stop of the elevator car or the like is restrained by the action of the damper device, which has the effect of preventing the trouble caused by the upward displacement of the frame body. Furthermore, the number of damper devices can be reduced, the device configuration can be simplified, and the manufacturing cost can be reduced.

Further, as described above, in the invention according to claim 3 of the present invention, both ends thereof are respectively connected to the elevator car and the counterweight and are suspended in the elevator hoistway. A compensating rope that forms a curved portion that is arranged in the curved portion, a tensioning wheel that is provided in a straddle state on the bending portion of the compensating rope, a frame body that is disposed in the bending portion and that supports the tensioning wheel, and the frame body. Mounted on the vehicle, a damper device provided with a piston that is displaced in the horizontal direction, a transmission mechanism provided on the frame for transmitting the operation of the piston of the damper device to a distant position along the frame surface, and from the bottom of the hoistway. A guide rail is provided which is erected upright and movably engages with the tip of the transmission mechanism in the vertical direction, and which has a slope from the bottom to the top that is inclined in the direction of operating the piston via the transmission mechanism. is there.

As a result, the frame body and the tension sheave are displaced in accordance with the expansion and contraction of the main rope and the compensation rope. Further, in the event of an abnormal situation such as a sudden stop of a car or the like, the jumping of the tensioning vehicle is restrained by the action of the damper device which is engaged with the guide rail via the transmission mechanism. Therefore, the tension wheel moves up and down to follow the expansion and contraction of the compensating rope, which prevents the elevator from abnormally stopping and trapping passengers in the car. effective.

Further, the sudden jumping-up phenomenon of the frame, which occurs at the time of an emergency stop of the elevator car or the like, is restrained by the action of the damper device, which has the effect of preventing the trouble caused by the upward displacement of the frame.

Further, the operation amount of the damper device corresponding to the vertical movement amount of the frame can be changed and transmitted to the damper device by the transmission mechanism, and the restraining force of the vertical movement of the frame can be easily set to an appropriate value. It can be set, and the damper device can be downsized. It also has the effect of improving the degree of freedom in the arrangement of equipment in the lower part of the hoistway.

Further, as described above, in the invention according to claim 4 of the present invention, both ends thereof are respectively connected to the elevator car and the counterweight and are suspended in the elevator hoistway, and the lower part of the hoistway is in the middle part. A compensating rope that forms a curved portion that is arranged in the curved portion, a tensioning wheel that is provided in a straddle state on the bending portion of the compensating rope, a frame body that is disposed in the bending portion and that supports the tensioning wheel, and the frame body. Mounted on the vehicle and provided with a piston that displaces in the horizontal direction, and a damper installed vertically from the bottom of the hoistway to constrain the horizontal displacement of the tip of the piston of the damper device within a predetermined range so that the tip of the piston moves. A guide rail is provided which is movably engaged in the vertical direction and guides the frame body, and is provided with a guide rail having an inclined surface inclined in a direction in which the piston is retracted from the lower portion to the upper portion.

As a result, when the main rope and the compensating rope are expanded and contracted, the frame and the damper device are guided and displaced by the guide rails, whereby the tension wheel is displaced following the expansion and contraction of the compensating rope and the like. Further, in the event of an abnormality such as a sudden stop of a car or the like, the jumper of the tensioning vehicle is restrained from jumping up by the action of the damper device. Therefore, it prevents the trouble that the safe and accurate operation of the elevator is obstructed, such as the tension wheel moving up and down and following the expansion and contraction of the compensation rope, which causes the elevator to stop abnormally and trap passengers in the car. effective.

Further, the sudden jumping-up phenomenon of the frame, which occurs at the time of an emergency stop of the elevator car or the like, is restrained by the action of the damper device, which has the effect of preventing the trouble caused by the upward displacement of the frame. Further, the tip of the piston of the damper device is engaged with the engaging portion formed by the vertical groove of the guide rail or the like, and the frame body and the damper device are guided in the vertical direction. Therefore, a guide device for guiding only the frame is not required, and the device configuration can be simplified and the manufacturing cost can be reduced.

As described above, in the fifth aspect of the present invention, both ends are connected to the elevator car and the counterweight, respectively, and are suspended in the elevator hoistway, and the middle part is the lower part of the hoistway. A compensating rope that forms a curved portion that is arranged in the curved portion, a tensioning wheel that is provided in a straddle state on the bending portion of the compensating rope, a frame body that is disposed in the bending portion and that supports the tensioning wheel, and the frame body. Mounted on the damper, which is provided with a piston that displaces in the horizontal direction, a detector that detects pressure fluctuations of the liquid enclosed in the damper device, and outputs an output for abnormal elevator control, and a lower part of the hoistway. And a guide rail that is movably engaged with the tip of the piston of the damper device in the vertical direction and has a slope inclined from the bottom to the top in the direction of retracting the piston.

As a result, the frame and the tension sheave follow the displacement of the main rope and the compensating rope as they expand and contract. Further, in the event of an abnormality such as a sudden stop of a car or the like, the jumper of the tensioning vehicle is restrained from jumping up by the action of the damper device. Further, when the tensioning vehicle jumps up at the time of an abnormality such as a sudden stop of the car or the like, the pressure in the cylinder of the damper device rises rapidly and the detector operates. Therefore, it prevents the trouble that the safe and accurate operation of the elevator is obstructed, such as the tension wheel moving up and down and following the expansion and contraction of the compensation rope, which causes the elevator to stop abnormally and trap passengers in the car. effective. Further, the sudden jumping-up phenomenon of the frame body caused by an emergency stop of the elevator car or the like is restrained by the action of the damper device, which has the effect of preventing the trouble caused by the upward displacement of the frame body.

Further, when the tensioning vehicle jumps up in an abnormal condition such as a sudden stop of the car or the like, the pressure in the cylinder of the damper device rapidly increases. The output of the detector due to this pressure increase has the effect of safely controlling the elevator and improving the safety of the elevator.

[Brief description of drawings]

FIG. 1 is a diagram showing a first embodiment of the present invention and will be described later with reference to FIG.
A view corresponding to an enlarged view of the tension vehicle part of.

FIG. 2 is an enlarged plan view of FIG.

FIG. 3 is an enlarged view showing a part of the damper device of FIG. 1 in a vertical section.

FIG. 4 is a view showing a second embodiment of the present invention and is equivalent to FIG.

5 is an enlarged plan view of FIG.

FIG. 6 is a diagram showing a third embodiment of the present invention and is an enlarged view of a main part corresponding to FIG. 5;

FIG. 7 is a vertical sectional view conceptually showing an elevator apparatus.

FIG. 8 is an enlarged view of the tension vehicle portion of FIG. 7.

[Explanation of symbols]

 1 hoistway 4 car 5 counterweight 6 compensating rope 7 bending part 9 guide rail 10 frame 12 tension wheel 24 damper device 26 piston 30 liquid 31 detector 35 transmission mechanism

Claims (5)

[Claims] 1. A compensating rope, both ends of which are respectively connected to a car and a counterweight of an elevator, is suspended in a hoistway of the elevator, and forms a curved portion disposed in a lower part of the hoistway at an intermediate portion, A tensioning wheel that is provided in a straddling state on the curved portion of the compensation rope, a frame body that is disposed on the bending portion and supports the tensioning wheel, and a piston that is mounted on the frame body and that is displaced in the horizontal direction are provided. A damper device that is provided to face each other of the pistons and a piston device that is erected from the lower part of the hoistway and is disposed between the pistons of the damper device so as to move vertically in the pistons. And a compensating rope tensioning device for an elevator, comprising: a guide rail having a slope inclined in a direction of retracting the piston corresponding to a lower part to an upper part. 2. A compensating rope, both ends of which are respectively connected to a car and a counterweight of an elevator, is hung from a hoistway of the elevator and forms a curved portion disposed at a lower portion of the hoistway in an intermediate portion, A tensioning wheel provided in a straddling state on the curved portion of the compensating rope, a frame body arranged on the bending portion and supporting the tensioning wheel, and projecting from side surfaces of the frame body facing each other. A damper device provided with a piston displacing in the horizontal direction at the projecting end, and a vertically erected vertically projecting end of the piston of the damper device, which is erected from the lower part of the hoistway corresponding to each of the damper devices. Compensating rope tensioning device for an elevator, comprising: a guide rail that engages with the guide rail and is formed with a slope inclined in a direction in which the piston is retracted from the lower part to the upper part. 3. A compensating rope, both ends of which are respectively connected to a car and a counterweight of an elevator, is hung in a hoistway of the elevator, and which forms a curved portion disposed in a lower part of the hoistway at an intermediate portion, A tensioning wheel that is provided in a straddling state on the curved portion of the compensation rope, a frame body that is disposed on the bending portion and supports the tensioning wheel, and a piston that is mounted on the frame body and that is displaced in the horizontal direction are provided. A damper device provided, a transmission mechanism provided in the frame for transmitting the operation of the piston of the damper device to a distant position along the frame surface, and the transmission mechanism erected from the lower part of the hoistway. A compensating rope tensioner for an elevator having a guide rail that is movably engaged in the vertical direction with the guide rail and that has a slope inclined from the lower part to the upper part in the direction of operating the piston through the transmission mechanism. Car equipment. 4. A compensating rope, both ends of which are respectively connected to a car and a counterweight of an elevator, is hung in a hoistway of the elevator, and forms a curved portion disposed in a lower part of the hoistway at an intermediate portion, A tensioning wheel that is provided in a straddling state on the curved portion of the compensation rope, a frame body that is disposed on the bending portion and supports the tensioning wheel, and a piston that is mounted on the frame body and that is displaced in the horizontal direction are provided. A damper device provided and standing upright from the lower part of the hoistway constrains the horizontal displacement of the tip end of the piston of the damper device within a predetermined range, and the tip end of the piston is movably engaged in the vertical direction. A compensating rope tensioning device for an elevator, comprising: a guide rail that guides the frame body, and a guide rail that is formed with a slope inclined from the lower part to the upper part in the direction of retracting the piston. 5. A compensating rope, both ends of which are respectively connected to a car and a counterweight of an elevator, is suspended in a hoistway of the elevator, and which forms a curved portion disposed in a lower part of the hoistway in an intermediate portion, A tensioning wheel that is provided in a straddling state on the curved portion of the compensation rope, a frame body that is disposed on the bending portion and supports the tensioning wheel, and a piston that is mounted on the frame body and that is displaced in the horizontal direction are provided. A damper device provided, a detector for detecting a pressure fluctuation of the liquid enclosed in the damper device, and outputting an output of the control at the time of abnormality of the elevator, and the damper device installed upright from the lower part of the hoistway. A compensating rope tensioning device for an elevator, comprising a guide rail that is movably engaged with a tip end portion of a piston in a vertical direction and has a slope inclined from a lower portion to an upper portion in a direction of retracting the piston. .