JPH0549769U - Anomaly detection device for elevator compensating rope - Google Patents

Abstract

(57) [Summary] [Purpose] The operation of the car is stopped by detecting that the compensating rope of the elevator has come out of the groove, the compensating rope is prevented from being damaged and the safety is secured. [Structure] A contact plate 20 is provided in the vicinity of a groove 12 of a pulley 11, and the contact plate 20 is fixed to a frame 10 of a tension vehicle 4 via a spring 22. When the compensating rope 6 enters into the contact plate 12 and the contact plate 20 and the contact plate 20 is displaced by a predetermined distance, the micro switch 30 operates to stop the operation of the elevator.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an abnormality detecting device for a compensating rope for an elevator, which is wound around a tension vehicle and has one end connected to a car and the other end connected to a counterweight.

[0002]

[Prior Art]

 As shown in FIG. 3, the rope-type elevator suspends a car 1 and a counterweight 2 by means of a main rope 3 in a hanging manner. The car 1 is moved up and down through the car. Then, a tensioning wheel 7 for giving an arbitrary tension to the compensating rope 6 for compensating the weight imbalance of the main rope 3 depending on the position of the car 1 is rotatably supported by a frame 10 holding a guide 9 as shown in FIG. It is made up of a pulley 11 and is guided by a guide rail 8 so as to be slidable up and down. Further, the pulley 11 has a plurality of grooves, and the compensating rope 6 interlocks with the grooves. The present technique is described in, for example, Japanese Patent Laid-Open No. 54-120154.

[0003]

[Problems to be solved by the device]

 In the above structure, when the building becomes taller, the main ropes 3 and the compensating ropes 6 also become longer, and a difference in tension tends to occur between the compensating ropes 6 one by one. In addition, when the compensating rope 6 becomes long, the swing around the whirling due to disturbance increases. Since the compensating rope 6 is composed of a plurality of compensating ropes, there is a difference in the amplitude and period of the whirling movement, and one compensating rope will cling to the compensating rope next to it.

When the elevator continues to run in this state, the compensating ropes enter the pulley groove 12 while intersecting with each other, causing the tension vehicle to move up and down abnormally or damage the compensating ropes. Further, the compensating rope 6 is dislocated from the pulley groove 12 and is sandwiched between the frame 10 and the pulley 11, and the compensating rope 6 and the main rope 3 are subjected to an excessive load and damaged.

An object of the present invention is to provide an abnormality detecting device for a compensating rope for an elevator, which can minimize damage to the compensating rope.

[0006]

[Means for Solving the Problems]

 The purpose of this is to install a contact plate close to the groove of the pulley in an abnormality detection device for elevator compensating ropes, one end of which is connected to the car and the other end of which is connected to the counterweight. The detecting means is fixed to the frame of the tension vehicle via the detecting means and detects that the compensating rope enters the groove and the contact plate while the elevator is running and the contact plate is displaced. When this is achieved by providing means for stopping the operation of the elevator.

[0007]

[Action]

 According to the present invention, when the compensating rope enters the groove of the pulley for some reason, the contact plate is displaced, the detecting means is activated, the elevator operation is stopped, and the damage of the compensating rope is minimized. You can

[0008]

【Example】

 An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a plan view of a tension vehicle showing an embodiment of the present invention. Note that the same reference numerals as those in FIG. 4 represent the same parts, and thus the description thereof will be omitted. In FIG. 1, 20 is a contact plate provided in the vicinity of the pulley 11, 21 is a rod member fixed to the frame 10, 22 is a spring fitted between the contact plate 20 and the rod member 21, and The plate 20 is configured to press the frame 10 with the spring 22. Reference numeral 30 denotes a micro switch provided at a substantially central position of the contact plate 20, which is fixed to the frame 10 by a lever 23 and operates when the contact plate 20 is displaced by a predetermined distance. FIG. 2 is an electrical connection diagram of this embodiment. P and N are DC power supply terminals, 30a is a contact point that closes when the microswitch 30 operates, and 31 is the elevator floor stop circuit.

Next, the operation of this embodiment will be described.

If the compensating rope 6 enters between the groove 12 and the contact plate 20 while the car is running for some reason, the contact plate 20 is displaced, the micro switch 30 is actuated, and the contact 30a is closed, so that the elevator The nearest floor stop circuit of operates, and the car immediately stops at the nearest floor. This saves passengers and minimizes damage to the compensating rope.

In the present embodiment, one micro switch 30 is used, but if two micro switches 30 are provided at both ends of the contact plate 20, it can be detected at any position where the compensating rope 6 enters. It is possible to improve the performance. Further, although the car is configured to be stopped at the nearest floor when the micro switch 30 is operated, the car may be stopped at an emergency or at a specific floor. It is also possible to reassure passengers by notifying that the compensating rope 6 has come off.

[0012]

[Effect of the device]

 As described above, according to the present invention, when the compensating rope is inserted between the groove of the pulley and the contact plate, the detecting means is activated to stop the operation of the elevator. It is possible to maintain the safety of the elevator while keeping it to the limit.

[Brief description of drawings]

FIG. 1 is a plan view of a tension vehicle having a detection mechanism according to an embodiment of the present invention.

FIG. 2 is an electrical connection diagram of an embodiment of the present invention.

FIG. 3 is a plan view showing the entire elevator.

FIG. 4 is a plan view of a tension wheel having a conventional structure.

[Explanation of symbols]

 1 Car 2 Balancing weight 3 Main rope 4 Drive vehicle 6 Compensation rope 7 Tension vehicle 10 Frame 11 Pulley 12 Groove 22 Spring 30 Micro switch 31 Nearest floor stop circuit

Claims (1)

[Scope of utility model registration request] 1. An abnormality detecting device for an elevator compensating rope, one end of which is connected to a car and the other end of which is connected to a counterweight. And a detecting means for fixing to the frame of the tension car via the elevator and detecting that the compensating rope enters the groove and the contact plate while the elevator is traveling and the contact plate is displaced, and when the detecting means operates. An abnormality detecting device for a compensating rope for an elevator, comprising means for stopping the operation of the elevator.