JP2001270670A - Traveling cable suspension device for elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a traveling cable suspension device for an elevator capable of reducing generation of variable load caused by weight change of a traveling cable at a car side corresponding to a lifting and lowering position of the car. SOLUTION: An end of the traveling cable 10 is suspended on a sidewall of an elevator shaft 1 and another end is placed to face to a lower surface of the car. A supporting device 22 provided with a movable engagement base 11 engaged with the end of the traveling cable 10 of the car 3 side, and a driver 18 moving the movable engagement base 11 to and from a suspended position of the traveling cable 10 of the elevator shaft 1 side along a horizontal projection plane is placed on the lower surface of the car 3. A control device 25 controls the driver 18 to displace the movable engagement base 11 to the suspended position side of the elevator shaft 1 side when the car 3 lowers through the elevator shaft 1 and displace the movable engagement base 11 to a center of gravity of the car 3 opposed to the suspended position side of the elevator shaft 1 side when the car 3 lifts through the elevator shaft 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a moving cable suspension device for an elevator on a car side of a moving cable suspended between a car and a fixed portion of a hoistway.

[0002]

2. Description of the Related Art FIG. 6 is a view showing a conventional elevator moving cable suspension apparatus, and is an elevational view conceptually showing an elevator. In the figure, 1 is a hoistway, 2 is a hoistway 1
A car 3 is guided by a guide rail 2 to move up and down the hoistway 1, 4 is a counterweight for moving up and down another predetermined path of the hoistway 1, and 5 is a lift weight above the hoistway 1. The provided hoisting machine 6 is a main rope wound around the hoisting machine 5 and having one end connected to the car 3 and the other end connected to the counterweight 4.

[0003] A balancing rope 7 is connected at one end to the lower part of the car 3 and the other end is connected to a lower part of the counterweight 4. , 9 are intermediate connecting boxes fixed to the side wall of the hoistway 1 and arranged in the middle of the hoisting process of the car 3.
Is a moving cable, one end of which is connected to the lower part of the car 3, and the other end of which is connected to a hanging tool (not shown) provided on a fixed portion of the hoistway 1 near the intermediate connecting box 9 to form a downwardly curved portion. And suspended from the hoistway 1.

The conventional moving cable suspension device for an elevator is configured as described above, and operation information from an operation panel (not shown) provided on the car 3 and a landing (not shown) is controlled via a moving cable 10. It is input to a panel (not shown). Then, the hoisting machine 5 is controlled by the control panel, and the car 3 moves up and down the hoistway 1 via the main rope 6, so that a required operation is performed.

When the car 3 descends below the hoistway 1, the car 3 is hung so as not to come into contact with the lower edge of the car 3 in consideration of the free bending diameter of the moving cable 10. There is a need. Therefore, the moving cable 10
The hanging position on the car 3 side is provided at a position shifted from the position of the center of gravity of the car 3 on the horizontal projection plane toward the side wall of the hoistway 1.

[0006]

In the conventional elevator moving cable suspension apparatus as described above, the suspension position of the moving cable 10 on the car 3 side is determined from the position of the center of gravity of the car 3 on the horizontal projection plane to the hoistway 1. Are arranged at positions shifted toward the side wall of the. For this reason, the weight of the moving cable 10 on the car 3 side increases with the rise of the car 3, so that the unbalanced load acting on the car 3 increases. Therefore,
There is a problem in that the car 3 becomes poorly balanced due to the unbalanced load by the moving cable 10 from the vicinity where the car 3 rises and reaches the middle of the ascent / descent stroke, and the riding comfort of the car 3 is reduced.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and an object of the present invention is to provide an elevator moving cable suspension device which is less likely to generate an eccentric load due to a change in the weight of the moving cable at the car side due to the elevator position of the car. With the goal.

[0008]

According to the present invention, there is provided a moving cable suspension apparatus for an elevator, in which a car that moves up and down a hoistway, one end of which is hung at an intermediate position in a height direction on a side wall of the hoistway, is suspended. A moving cable, which is suspended and curved upward and has the other end disposed opposite to the lower surface of the car, a moving locking table provided on the lower surface of the car and locking the car-side end of the moving cable, and When the car is lowered toward the lower part of the hoistway by controlling the driving device, and a supporting device including a driving device that moves the moving locking table forward and backward with respect to the hoistway side hanging position of the moving cable on the horizontal projection plane, Control that displaces the movable locking platform to the hoistway side hanging position side and, when the car rises near the top of the hoistway, moves the mobile locking platform to the position near the center of gravity of the car on the anti-hoistway side suspended position side An apparatus is provided.

Further, in the moving cable suspension device for an elevator according to the present invention, a temperature detector for detecting the temperature in the hoistway is provided, and when the detected value of the temperature detector is low, the movement is locked. A control device having a function of displacing the table to the lifting position side of the moving cable opposite to the hoistway side, and displacing the movable locking table to the lifting position side of the moving cable when the detection value of the temperature detector is high. Is provided.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 1 to 5 are views showing an example of an embodiment of the present invention. FIG. 1 is an elevation view conceptually showing a main part of a hoistway, and FIG. 2 is a plan view of a portion of a lifting device in FIG. , FIG. 3 is a circuit diagram conceptually showing the connection of electrical equipment related to the lifting device of FIG. 1, FIG. 4 is a graph showing the relationship between the vertical position of the car and the offset load in the lifting device of FIG. 1, and FIG.
3 is a graph showing the relationship between the free bending diameter of the moving cable and the temperature in the suspension device of FIG. Except for FIGS. 1 to 5, the elevator is configured in the same manner as in FIG. 6 described above.

In the drawing, 1 is a hoistway, 3 is a car which is guided by a guide rail 2 and moves up and down the hoistway 1, and 9 is a hoistway 1
An intermediate junction box 10 fixed to the side wall of the car 3 and arranged in the middle of the ascent / descent process of the car 3 is a moving cable, one end of which is the car 3
And the other end is connected to a hoisting tool (not shown) provided at a fixed portion of the hoistway 1 near the intermediate junction box 9 to form a hanging curved portion and hang from the hoistway 1. ing.

Reference numeral 11 denotes a movable locking base, which is a support frame 12 formed to be spaced downward from the lower surface of the car 3 and is provided on the upper surface of the support frame 12 and has a longitudinal direction extending toward the intermediate junction box 9 on a horizontal projection plane. A guide rail 13 disposed, a blocker 14 provided at each of both longitudinal ends of the guide rail 13, and a cart 16 having wheels 15 guided by the guide rail 13.
And a gripping piece 17 provided on the carriage 16 and gripping an intermediate portion of the moving cable 10 below the connection point on the car 3 side.

Reference numeral 18 denotes a driving machine, which comprises a motor 19 and a male screw 21 which is screwed into a nut 20 provided on the carriage 16 of the movable locking base 11 and driven by the motor 19. Reference numeral 22 denotes a support device, which is constituted by the movable locking base 11 and the driving device 18 and movably suspends the movable cable 10 on the car 3 side. Reference numeral 23 denotes a temperature detector provided in the hoistway 1, reference numeral 24 denotes a position detection encoder provided in the hoisting machine 5, and a position detector for detecting the raising / lowering position of the car 3. Device 18, a temperature detector 23, and a position detector 24.

In the moving cable suspension apparatus for an elevator constructed as described above, operation information from an operation panel (not shown) provided at the car 3 and a landing (not shown) is transmitted to the control panel via the moving cable 10. (Not shown). Then, the hoisting machine 5 is controlled by the control panel,
The required operation is performed when the car 3 moves up and down the hoistway 1 via the main rope 6.

When the position of the car 3 is detected by the position detector 24 and the car 3 is lowered to the lower part of the hoistway 1, the drive unit 18 is controlled by the control device 25 to operate and operate. 11 is displaced as described below.
That is, considering the free bending diameter of the moving cable 10 so that the moving cable 10 does not contact the lower edge of the car 3,
FIG. 1 shows the hanging position of the moving cable 10 on the car 3 side.
A, that is, the movable locking base 11 is displaced toward the intermediate connecting box 9 which is the hanging position side on the hoistway 1 side.

When the position of the elevator car 3 is detected by the position detector 24 and the elevator car 3 rises to the top of the hoistway 1, the driving device 18 is controlled by the control device 25 to operate and lock. The platform 11 is displaced as described below.
That is, as the weight of the moving cable 10 on the car 3 side increases with the rise of the car 3, the eccentric load acting on the car 3 increases as shown in FIG. For this reason, the hanging position of the moving cable 10 on the car 3 side is the B position shown in FIG.
Side, that is, the movable locking base 11 is displaced in the direction opposite to the intermediate connecting box 9 which is the hanging position side on the hoistway 1 side.

As a result, the hanging position of the moving cable 10 on the car 3 side is arranged near the position of the center of gravity of the car 3 on the horizontal projection plane. Such a displacement of the movable locking base 11, that is, a displacement of the hanging position of the moving cable 10 on the car 3 side does not cause a problem when the elevator position of the car 3 is at the lower part of the hoistway 1.

When the elevator position of the car 3 is above the hoistway 1, the hanging position of the moving cable 10 on the car 3 side is located near the center of gravity of the car 3. For this reason, the balance of the car 3 is deteriorated due to the eccentric load by the moving cable 10 from the vicinity where the car 3 rises and reaches the middle of the ascent / descent stroke, thereby preventing the occurrence of a problem that the riding comfort of the car 3 is reduced. can do.

The temperature in the hoistway 1 is detected by the temperature detector 23 and input to the control device 25. As a result, the driving device 18 is controlled and operated by the control device 25, and the movable locking base 11 is displaced as described below. That is, the free bending diameter of the moving cable 10 covered with the synthetic resin material changes depending on the temperature as shown in FIG. However, with respect to the change in the free bending diameter, the moving cable 10
If the hanging position on the side of the car 3 is kept constant, vibration occurs in the moving cable 10 and the riding comfort of the car 3 deteriorates.

For this reason, the position of the movable locking base 11 is displaced in response to a change in the free bending diameter due to a change in the temperature of the movable cable 10. When the temperature in the hoistway 1 is low, the free bending diameter of the moving cable 10 increases.
Within a range in which the unbalanced load acting on the car 3 does not increase, the movable locking base 11 is displaced to the side B shown in FIG. 1 so that the vibration of the movable cable 10 is reduced.

When the temperature in the hoistway 1 is high, the free bending diameter of the moving cable 10 becomes small.
The movable locking base 11 is displaced toward the side A shown in FIG. Thereby, the hanging position of the moving cable 10 on the car 3 side is displaced in response to the temperature change in the hoistway 1, and the moving cable 10 is connected to a fixed position on the car 3 side regardless of the temperature change. It is possible to eliminate the problem that the moving cable 10 is vibrated or the riding comfort of the car 3 is reduced.

[0022]

As described above, according to the present invention, a car for ascending and descending a hoistway, one end of which is hung at an intermediate position in the height direction on the side wall of the hoistway, is suspended and suspended upward and curved upward. The other end is a moving cable arranged opposite to the lower surface of the car, a moving locking table provided on the lower surface of the car and locking the car side end of the moving cable, and a horizontal projection surface And a driving device for moving the moving cable up and down with respect to the hoistway-side suspension position, and controlling the driving device to suspend the movable locking platform when the car descends toward the lower portion of the hoistway. And a control device for displacing the movable locking table to a position closer to the center of gravity of the car on the side opposite to the hoistway side suspension position when the car is raised toward the top of the hoistway.

With this arrangement, when the car descends toward the lower part of the hoistway, the movable locking base is displaced to the hoistway side hanging position side by the operation of the control device, and in a state in which the free bending diameter of the moving cable is considered. The hanging position is located at a position where the moving cable does not contact the lower edge of the car. In addition, when the car rises near the upper part of the hoistway, the operation of the control device causes the movable locking base to be displaced in a direction opposite to the hoistway side hanging position side and move to a position near the center of gravity of the car horizontal projection plane. A hanging position on the car side of the cable is arranged. For this reason, there is an effect of solving the problem when the elevator position of the car is at the lower part of the hoistway. In addition, when the elevator position of the car is at the upper part of the hoistway, the hanging position of the moving cable on the car side is located near the position of the center of gravity of the car, and as the car rises, the cage is moved due to the uneven load of the moving cable. This has the effect of preventing the occurrence of a problem in which the balance of the vehicle becomes poor and the ride quality is reduced.

Further, as described above, the present invention is provided with a temperature detector for detecting the temperature in the hoistway, and when the detected value of the temperature detector is low, the movable locking base is moved to the position opposite to the movable cable. A control device having a function of displacing the hoistway side hanging position side and displacing the movable locking table to the hoistway side hanging position side of the moving cable when the detection value of the temperature detector is high is provided. .

Thus, when the car descends toward the lower part of the hoistway, the movable locking table is displaced to the hoistway side hanging position side by the operation of the control device, and in a state in which the free bending diameter of the moving cable is considered. The hanging position is located at a position where the moving cable does not contact the lower edge of the car. In addition, when the car rises near the upper part of the hoistway, the operation of the control device causes the movable locking base to be displaced in a direction opposite to the hoistway side hanging position side and to move near the center of gravity of the car horizontal projection plane. A hanging position on the car side of the cable is arranged. For this reason, there is an effect of solving the problem when the elevator position of the car is at the lower part of the hoistway. In addition, when the elevator position of the car is at the upper part of the hoistway, the hanging position of the moving cable on the car side is located near the position of the center of gravity of the car, and as the car rises, the cage is moved due to the uneven load of the moving cable. This has the effect of preventing the occurrence of a problem in which the balance of the vehicle becomes poor and the ride quality is reduced. Further, the hanging position on the car side of the moving cable is displaced in accordance with the free bending diameter of the moving cable that changes depending on the temperature in the hoistway. Thus, by connecting the moving cable to a certain position on the car side, there is an effect of eliminating a problem that vibration occurs in the moving cable due to a temperature change and a ride comfort of the car is deteriorated.

[Brief description of the drawings]

FIG. 1 is a view showing a first embodiment of the present invention, and is an elevation view conceptually showing a main part of a hoistway.

FIG. 2 is a plan view of the suspension device of FIG. 1;

FIG. 3 is a conceptual circuit diagram of electrical equipment related to the suspension device of FIG. 1;

FIG. 4 is a graph showing the relationship between the elevator position of the car and the eccentric load in the lifting device of FIG. 1;

FIG. 5 is a graph showing a relationship between a free bending diameter of a moving cable and a temperature in the suspension device of FIG. 1;

FIG. 6 is an elevational view conceptually showing an elevator, showing a conventional moving cable suspension device for an elevator.

[Explanation of symbols]

1 hoistway, 3 cars, 10 moving cable, 11 moving locking stand, 18 driving machine, 22 support device, 23 temperature detector, 25 control device.

Claims (2)

[Claims] 1. A car for raising and lowering a hoistway, one end of which is hung at an intermediate position in the height direction on the side wall of the hoistway, and is suspended and suspended upward, and the other end is provided on the lower surface of the car. A moving cable disposed oppositely, a moving locking base provided on the lower surface of the car and locking the car-side end of the moving cable, and the moving cable mounted on the horizontal projection plane on the moving locking base. A support device comprising a drive device for moving forward and backward with respect to the hoistway side hanging position, and when the car is lowered toward the lower portion of the hoistway by controlling the drive device,
Displace the movable locking table to the hoistway side hanging position side,
A moving cable suspension for an elevator, comprising: a control device for displacing the movable locking base to a position closer to the center of gravity of the car on the side of the hoistway side suspension position when the car rises toward the top of the hoistway. Holding device. A temperature detector for detecting a temperature in the hoistway, wherein the control device is arranged to move the movable locking base when the temperature detector detects a low temperature, and a position for suspending the moving cable from the hoistway side. A function of displacing the movable locking table toward the hoistway side hanging position side of the movable cable when the detection value of the temperature detector is high. Item 4. A moving cable suspension device for an elevator according to Item 1.