KR20080099973A - Rope brake for elevator - Google Patents

Abstract

A rope braking device of the elevator is provided to make a breaking device simple and light by forming a pair of stopper at both ends of an eccentric roller. A rope braking plate(50) is composed of a sliding module including a sliding member(56), a fixing plate(52), and solid lubricant bearing or the linear roller bearing(54). A protrusion(58) is formed on both ends of the sliding module and a pair of stopper(46) is formed at both ends of the eccentric roller(40). The eccentric roller is stopped by the stopper after 180 degrees rotation to maximize the braking power. The eccentric roller pressurizes a rope while being selectively circulated with the weight and both ends part are installed at a pair of lateral frame to be rotated through each bearing and bracket.

Description

Rope Braking System for Elevators {ROPE BRAKE FOR ELEVATOR}

        1 is a perspective view showing a rope braking device of an elevator according to the present invention;

       2 is an exploded perspective view showing a rope braking device of an elevator according to the present invention;

       3A and 3B are a plan view and a side view showing a rope braking device of an elevator according to the present invention;

       4 is a view showing a state in which the rope braking device of the elevator according to the present invention in the normal position,

       5a to 5e is a view showing a process of braking the rope by the rope braking device of the elevator according to the present invention,

       6A to 6C are diagrams illustrating a process of releasing a braided rope by a rope braking device of an elevator according to the present invention.

       Explanation of symbols on the main parts of the drawings

       10: side frame, 20: fixed plate,

       30: moving plate, 32: guide part,

       40: eccentric roller, 42: bearing,

       44: bracket, 46: stopper,

       50: rope brake plate, 52: fixed plate,

       54: solid lubricant bearing or linear roller bearing,

       56: sliding gib member, 58: locking jaw,

       60: solenoid, 62: solenoid mounting plate,

       70: trip plate, 72: hinge,

       74: locking pin, 80: compression spring,

       90: return device, 92: stopping plate,

       100: rope.

       The present invention relates to a rope braking device for an elevator, and more particularly, to prevent an accident such as speeding up or down in an elevator car or an opening and closing in a landing section according to a failure of an elevator control system or a brake device. It relates to a rope braking device of an elevator.

       In general, an elevator device installed in a residential or business building for vertical movement of a person or object is installed in a separate machine room or inside a hoistway, and then mounted on a main sheeve of the hoist. Controlling so that the wound rope is moved is configured to move a passenger in the elevator car by selectively raising or lowering the elevator car and the counterweight respectively connected to one end and the other end of the rope.

       That is, when a passenger boarding the elevator car operates an input button for an object floor or an operation of an up or down button at a platform of each floor, the elevator control panel performs the control so that the elevator car is stopped on the floor. .

       However, in the above-mentioned elevator operation, however, the elevator car slips in the landing zone or exceeds the specified speed in the ascending or descending direction due to occurrence of an abnormal state of the elevator control system or deterioration of braking force of the elevator brake device during the control process. An accident may occur, and accordingly, the elevator device is provided with a rope braking device so as to prevent the safety accident as described above.

       On the other hand, the conventional structure of the rope braking device of the elevator is made of a direct compression method for pressing the rope through the hydraulic pressure or the force of the spring, and as a return method for releasing the crimping state of the rope as a hydraulic or spring type, The motor type or manual return method is used.

       However, the rope braking device of the conventional elevator as described above should be provided with a separate return device, such as hydraulic, spring, motor type, etc. for the return of the device, which results in complicated equipment and increased product cost Problems have arisen.

       Accordingly, the present invention has been made in order to improve the conventional problems as described above, the present invention achieves miniaturization and weight reduction of the elevator rope braking device for preventing accidents such as speeding of the elevator car or opening and closing car, etc. An object of the present invention is to provide a rope braking device for an elevator that can exhibit excellent performance even with a simpler configuration.

       The rope braking device of an elevator according to the present invention for achieving the above object, the rope braking device of the elevator to control the rope wound on the main sheave of the hoisting machine so as to prevent the speeding of the elevator car or the opening and closing car accident A pair of side frames each having a rectangular frame shape provided on both sides of the rope braking device of the elevator; A fixed plate installed at the front end side of the pair of side frames; A moving plate which is installed at a rear of the fixed plate at a predetermined distance and selectively moved in the front and rear directions; A compression spring installed between the fixed plate and the moving plate to press and move the moving plate; An eccentric roller that is selectively rotated by its own weight when the moving plate is moved and presses the rope, and both ends thereof are rotatably installed on the pair of side frames via bearings and brackets, respectively; A rope braking plate installed at the rear end of the pair of side frames to press the rope together with the eccentric roller; A return device installed at both ends of the eccentric roller in an eccentric state to return the rotated eccentric roller; A solenoid mounted on an upper side of the eccentric roller and whose axis is selectively moved depending on whether an abnormal signal is detected; And a trip plate intermittent and releasing the moving plate according to whether the solenoid shaft is moved in a state in which it is installed above the moving plate.

       Preferably, the rope braking plate; And a sliding gib module including a sliding gib member, a fixed plate, and a solid lubricant bearing or a linear roller bearing.

       More preferably, at both ends of the sliding gib module, a locking jaw is formed, and a pair of stoppers are formed at both ends of the eccentric roller corresponding to the locking jaw, and the eccentric roller is rotated 180 °. It is characterized in that configured to exert the maximum braking force while being stopped by the stopper.

       Hereinafter, the present invention configured as described above will be described in detail with reference to the accompanying drawings.

       1 is a perspective view showing a rope braking device of an elevator according to the present invention, Figure 2 is an exploded perspective view showing a rope braking device of an elevator according to the present invention, Figures 3a and 3b is a rope braking device of an elevator according to the present invention Top view and one side view.

       First, the rope braking device of an elevator according to the present invention is provided to prevent the elevator car from operating abnormally by controlling the rope wound on the main sheave of the hoisting machine when an abnormal state of the elevator control system occurs.

       To this end, the rope braking device of the elevator is installed in a state in which the pair of side frames 10 formed in a substantially rectangular frame face each other with a predetermined interval, between the pair of side frames 10 is approximately square. The fixed plate 20, the moving plate 30, and the rope braking plate 50 having a plate shape are provided and configured, respectively.

       At this time, the fixing plate 20 is fixedly coupled to the front end side of the pair of side frames 10 via a bolt, the moving plate 30 is spaced a predetermined distance behind the fixed plate 20. In addition to being installed in a state in which the guide portion 32 is formed at both ends thereof, the guide portion 32 can be selectively moved in the front and rear directions in a state where the guide portion 32 is interrupted in the space of the side frame 10 having a substantially rectangular frame shape. To be installed.

       Then, the rope braking plate 50 to stop by pressing the rope 100 together with the eccentric roller 40 to be described later in a state that is fixed to the rear end side of the pair of side frames 10 via a bolt. The rope braking plate 50 is composed of a sliding plate module consisting of a fixed plate 52 and a sliding gib member 56 and a solid lubricant bearing or a linear roller bearing 54 to which the bolt is fastened and fixed. It is configured to be made.

       In addition, the locking jaw 58 is formed on both ends of the sliding gib member 56 of the sliding gib module constituting the rope braking plate 50 so that the rotational position of the eccentric roller 40 can be interrupted. .

       Meanwhile, a compression spring 80 for moving the movable plate 30 by applying a predetermined elastic force to the movable plate 30 is installed between the fixed plate 20 and the movable plate 30. Between the 30 and the rope braking plate 50, an eccentric roller 40 for pressing and stopping the rope 100 together with the rope braking plate 50 is installed.

       That is, the eccentric roller 40 has both ends of the compression spring 80 in a state in which both ends thereof are rotatable to the pair of side frames 10 via the bearing 42 and the bracket 44. As the movable plate 30 is moved, the rope 100 is urged while being rotated by its own weight. At this time, both ends of the eccentric roller 40 have a locking jaw 58 of the rope brake plate 50. A corresponding pair of stoppers 46 are provided, and the eccentric roller 40 rotates 180 ° and exerts the maximum braking force in the stopped state via the stopper 46 and the locking jaw 58.

       Then, both ends of the eccentric roller 40 moves the eccentric roller 40 toward the rope brake plate 50 to press the rope 100, and then returns to its original state according to the movement of the rope 100. A return device 90 is installed to allow a smooth return at the time.

       The pair of return devices 90 is formed of a substantially rod-shaped body, one end side of which is installed in both ends of the eccentric roller 40 in an eccentric state, and the outer surface of the bracket 44 has a long hole formed therein. After the plate 92 is installed, a spring is installed between the stopping plate 92 and the other end of the rod-shaped body of the return device 90, and the braking of the rope 100 of the eccentric roller 40 is released and compressed. As the spring provided in the return device 90 is restored, the eccentric roller 40 is configured to be smoothly returned to its original position.

       In addition, after the solenoid mounting plate 62 is installed through the side frame 10 corresponding to the upper portion of the eccentric roller 40 installation point, the abnormal signal of the elevator system is detected through the solenoid mounting plate 62. Afterwards, the solenoid 60 is configured to selectively move forward and backward according to the solenoid shaft, and the movable plate 30 is moved along the fixed plate 20 and the movable plate 30 according to the forward and backward movement of the solenoid shaft. A trip plate 70 for selectively interrupting and releasing is installed.

       That is, the lower surface of the one side of the trip plate 70 is rotatably installed on the upper surface of the fixing plate 20 and the locking pin 74 is installed on the upper surface of the movable plate 30. Then, the clamping plate 74 is configured to selectively control the trip plate 70 according to whether the solenoid 60 shaft is operated, and thereby to control the movement of the movable plate 30. .

       Next, the operation of the present invention made as described above in detail.

       First, as shown in FIG. 4, when the elevator system is normally controlled without abnormality, the solenoid 60 provided in the rope braking device of the elevator is in a magnetized state, and thus the trip plate 70 is The movement of the moving plate 30 is prevented while maintaining the state of being interrupted by the locking pin 74 formed at the upper portion of the moving plate 30, and the eccentric roller 40 is controlled according to the control of the moving plate 30. ) Maintains a spaced distance from the rope braking plate 50 while being spaced apart from the rope (100).

       However, as shown in FIGS. 5A to 5E, when an abnormal signal is generated from the elevator control system, the solenoid 60 is non-magnetized and its axis is advanced, and at this time, the movement of the rope 100 is performed. When the hook of the solenoid 60 is rotated to further advance the shaft of the solenoid 60 to lift the trip plate 70, the trip plate 70 from the locking pin 74 To be in a released state (FIGS. 5A and 5B).

       In addition, as the trip plate 70 is separated from the locking pin 74, the movable plate 30 is moved by the elastic force of the compression spring 80 installed between the fixed plate 20 and the movable plate 30. At the same time as the moving plate 30 moves, the eccentric roller 40 is pushed back according to the amount of eccentricity while rotating along the downward direction of the rope 100 (FIGS. 5C and 5D), and the eccentric roller ( 40 is rotated by 180 ° while applying more and more pressure to the rope 100 by the compression spring 80 to exert the maximum braking force in the stopped state by the locking jaw 58 and the stopper 46 ( 5e).

       At this time, the eccentric roller 40 is pushed back to a point where the trip plate 70 separated from the locking pin 74 can be caught by the locking pin 74, when the eccentric roller 40 to be described later returns. The fixing plate 20 and the eccentric roller 40, etc. do not flow arbitrarily.

      Meanwhile, as described above, when the elevator car is moved in the opposite direction of braking in a state in which the rope 100 is pressed and controlled through the rope braking plate 50 and the eccentric roller 40, as illustrated in FIGS. 6A to 6C. As the rope braking plate 50 made of the sliding gib module moves, the eccentric roller 40 rotates in the opposite direction rotated during braking.

       Accordingly, the eccentric roller 40 is able to return to the initial position by the restoring force of the return device 90 while falling off the rope 100.

       That is, the rope braking device of the elevator is in the braking state of the rope 100, the rope 100 is moved in the opposite direction to the braking direction and at the same time can be automatically returned to its original state without a separate complicated return device .

       On the other hand, even if the modified embodiments different from the contents described in the present invention should not be understood individually from the technical spirit or prospects of the present invention, of course, it will fall within the claims attached to the present invention.

       According to the present invention made as described above, as the rope braking device of the elevator for preventing an accident such as speeding of the elevator car or opening and closing car through the eccentric roller, the size of the device is 1/3 of the existing size Therefore, the size and weight of the product can be reduced.

       In addition, the rope braking device of the elevator operates only during abnormal operation such as speeding or opening and closing, and after the braking structure is automatically returned without a separate return means, it is possible to provide a better performance device Will also be.

Claims (3)

       In the elevator rope braking device for controlling the rope wound on the main sheave of the hoisting machine so as to prevent the speeding of the elevator car, the opening and closing accident, etc.,        A pair of side frames each having a rectangular frame shape provided on both sides of the rope braking device of the elevator;        A fixed plate installed at the front end side of the pair of side frames;        A moving plate which is installed at a rear of the fixed plate at a predetermined distance and selectively moved in the front and rear directions;        A compression spring installed between the fixed plate and the moving plate to press and move the moving plate;         An eccentric roller that is selectively rotated by its own weight when the moving plate is moved and presses the rope, and both ends thereof are rotatably installed on the pair of side frames via bearings and brackets, respectively;        A rope braking plate installed at the rear end of the pair of side frames to press the rope together with the eccentric roller;        A return device installed at both ends of the eccentric roller in an eccentric state to return the rotated eccentric roller;        A solenoid mounted on an upper side of the eccentric roller to selectively move its axis according to whether an abnormal signal is detected;        And a trip plate for interrupting and releasing the moving plate according to whether the solenoid shaft is moved in a state of being installed above the moving plate.        The method of claim 1,        The rope braking plate is;       An elevator rope braking apparatus comprising a sliding gib member, a fixed plate, and a sliding gib module including a solid lubricant bearing or a linear roller bearing.        The method according to claim 1 or 2,       A locking jaw is formed at both ends of the sliding gib module, and a pair of stoppers are formed at both ends of the eccentric roller corresponding to the locking jaw, and the eccentric roller is rotated by 180 ° by the stopper. Rope braking device for an elevator, characterized in that configured to exert maximum braking force.

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