KR100726789B1 - An elevator bi-directional braking device - Google Patents

Abstract

A bi-directional braking apparatus for an elevator is provided to maximize the safety by braking a cage through a floating plate and a frictional plate. A body(10) is connected and fixed on a side of a cage. Supporting bars(12) of a predetermined length are integrally formed to be opposite to each other on upper/lower parts of both inner sides. Actuators(20) are installed on both sides of the body(10). One side of the actuator(20) is extended to the inside of the body(10), and the other side thereof is installed in the cage through a wire(5). The actuator(20) is operated by an operation of a detection unit. Springs(30) have a predetermined elasticity, and are installed to be opposite to each other on both sides of the inside of the body(10). Upper/lower parts of a floating plate(40) are supported by the supporting bar(12) of the body(10) and the elasticity of the spring(30). One end of the actuator(20) extended to the inside of the body(10) is fixed on a central part of the floating plate(40). Guide grooves are formed along a length direction. A plurality of balls is rotatably formed on a curved plane of the guide groove. A guide bar is inserted into the guide groove formed on the floating plate(40), and is contacted with the ball which is buried on the curved plane. The guide bar is protrusively formed on a central part of a side plane of a frictional plate(50). The frictional plate(50) contacted with a guide rail installed on a lift path is integrally installed inside of the body(10).

Description

An elevator bi-directional braking device

1 is an exemplary view schematically showing a state in which a braking device according to the present invention is installed.

2 is a schematic sectional view in accordance with the present invention.

Figure 3 is a schematic flat cross-sectional view according to the present invention.

Figures 4a, 4b is an exemplary view showing in sequence the operating state according to the present invention.

       *** Description of the symbols for the main parts of the drawings ***

  1: cage 3: sensing unit 5: wire

  7: guide rail 10: main body 12: support

 20: actuator 30: spring 40: flow plate

 42: guide groove 44: ball 50: friction plate

 52: guide bar

The present invention relates to a braking device that protects the safety of passengers by braking the cage when the cage rises or falls rapidly due to abnormal operation during operation of the elevator. More specifically, the upper / lower portion of the cage or It is installed on both sides of the upper or lower, and coupled to the guide rail installed vertically in the hoistway, if the abnormal speed is detected during the cage up / down, the braking device is activated so that the cage can be stopped by friction with the guide rail By providing a two-way braking device for the elevator to ensure the maximum safety of the passengers.

As is well known, the elevator is a cage that is lifted and lowered along a guide rail installed vertically in the hoistway formed inside the building, and one end of which is connected to the cage and the other end drives a wire rope connected to a counterwaiter by a predetermined driving unit. It is composed of a sheave winder is one of the conveying machine to facilitate the inter-floor movement of the passengers and objects in the cage.

Such elevators are provided with various types and a plurality of braking devices to ensure safety in operation. For example, Utility Model Registration No. 213956 is proposed. Such a conventional emergency braking device has a brake on one side of the brake housing. Shoe is mounted by a spring, the eccentric cam is coupled to the opposite side, and the eccentric cam is attached with a sector gear, and the brake device is installed so that the guide rail is positioned between the brake shoe and the eccentric cam. When the speed was sensed, the eccentric cam was immediately operated to stop the cage. However, the operation of the eccentric cam alone did not achieve satisfactory braking effect and could not enhance the safety of the passenger.

On the other hand, in order to solve the above problems, Patent No. 10-0450440 has been devised and usefully used for safe operation of an elevator. The braking device includes a brake housing fixed to a bracket of an elevator cage, and a brake housing on one side of the bracket. A plate extending on an installation surface of the rod and having a pin in the center thereof, a rod bar rotatably installed at the end of the plate by a bushing, an end fixed to the end of the rod bar and an actuator installed at an intermediate portion thereof, and a pin near the actuator. And a torsion spring installed at a bolt installed near the plate on which the rod bar is located, and a torsion spring having both ends positioned between the pins.

And, the brake housing is formed of a "H" shaped body having a front and rear flange, a brake shoe supported by a spring is installed on the upper inside of the front flange and the jaw guide plate is fixed to the inside of the rear flange and the jaw guide The plate is formed with an inclined and opposing guide groove for guiding the movement of the two opposing jaws, the two jaws are connected by a connecting plate, and each jaw is provided with an externally extending screw and each jaws The sliding guide bolt is fastened through the guide groove of the jaw guide plate, a rod is installed at the lower part of the housing, and two sleeves are installed side by side under the part where the jaw guide plate of the brake housing is fixed, and the sleeve is installed by a spring. It is installed to be supported under elasticity.

The braking device installed as described above was able to control all the abnormal speeds due to the failure of the cage up and down, thereby increasing safety in elevator operation. However, the braking device has a large number of parts and is very complicated to install. It acts as a factor in raising the installation cost, and the situation is not getting its effectiveness.

Therefore, in order to solve the above problems, the present invention is to install a main body of the braking device capable of two-way braking on one side of the cage, the inside of the main body and the guide rail installed in the hoistway and the friction plate of each side friction, The actuator is operated by installing a fluid plate supporting the friction plate and a spring supporting the fluid plate, and fixing actuators actuated by a sensing unit on both sides of the main body so as to be connected to the fluid plate on both sides of the main body. When the flow plate and the friction plate flows to the left and right by the elasticity of the spring to be rubbed with both sides of the guide rail, respectively, the friction plate is moved to the upper or lower portion of the flow plate and tightly sandwiched between the flow plate and the guide rail. By allowing the cage to be braked, it also maximizes safety in elevator operation. It is an object of the present invention to provide a two-way braking device for an elevator that simplifies its components and makes installation very simple and easy, and thus reduces installation costs.

In order to achieve the above object, the present invention provides a braking device that operates when an abnormal speed occurs during operation of an elevator to control and stop the speed of the cage, and is firmly fastened and mounted on one side of the cage, A main body integrally formed at a lower portion of the support with a predetermined length facing each other; An actuator installed on both sides of the main body, one side of which is installed to extend into the main body and the other side of which is fixed by a wire of a predetermined length connected to a sensing unit provided separately; A spring installed opposite to the upper and lower sides of the inside of the main body and having a predetermined elasticity; The upper and lower parts of the spring are supported by the elasticity of the spring and the support of the main body, and one end of the actuator extending into the main body is firmly fixed at the center, and guide grooves are formed in the longitudinal direction on one side facing each other. A flow plate having a plurality of balls integrally buried in the curved one side of the guide groove so as to be rotatable; The guide bar is inserted into the guide groove formed in the flow plate, and the guide bar which contacts the ball buried in the curved one side to allow the up / down flow is protruded and formed in the central portion of the one side, respectively, the other side of the guide rail and It is characterized in that the friction plate which is in contact with the friction is integrally installed in the body.

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

1 is an exemplary view schematically showing a state in which the braking apparatus according to the present invention is installed, FIG. 2 is a schematic front cross-sectional view according to the present invention, and FIG. 3 is a schematic flat cross-sectional view and FIG. 4a and 4b are exemplary views showing the operating states according to the present invention in order.

As shown, the braking device of the present invention includes a main body 10, an actuator 20, a spring 30, a fluid plate 40, and a friction plate 50.

The main body 10 is provided by assembling and fastening a plurality of metal plates to form a rectangular parallelepiped shape in which rear and upper / lower predetermined portions are opened, or integrally injected and molded by a mold, on both inner side surfaces of the main body 10. Each of the lower and lower portions of the support 12 having a predetermined length is integrally formed so as to limit the flow range of the flow plate 40 so as not to be pushed to both sides of the main body 10 any more.

The actuator 20 is to operate the flow plate to the left / right, it is firmly mounted on both sides of the main body 10, one side of which extends into the main body 10 of the flow plate 40 It is fastened and fixed at the center, and the other side is connected to the sensing unit 3 which is separately installed in the cage 1 by a wire 5 so that when the abnormal speed of the cage 1 is detected, the sensing unit 3 does this. Sensing and actuating the actuator 20.

The spring 30 is an elastic body having a predetermined elasticity, and at least four or more upper and lower portions are installed in the main body 10 to respectively support the flow plate 40 by elasticity.

"형태로 형성하고, 상기 가이드홈(42)이 형성된 일면에는 다수의 볼(44)이 회전 가능하게 일정 부분 돌출되게 매몰되어 있고, 타측의 중앙부분은 상기 액추에이터(20)의 일측과 연결되어 상기 본체(10)의 지지대(12)와 스프링(30)에 의해 지지되도록 하면 되는 것이다.The flow plate 40 is injected and molded to round the center of the metal material having excellent strength, and is mounted to face each other inside the main body 10, each side facing each other guide grooves of a predetermined depth 42 to form a cross section "

"Formed in the form, the one side in which the guide groove 42 is formed is a plurality of balls 44 are rotatably buried so as to protrude, and the central portion of the other side is connected to one side of the actuator 20 What is necessary is just to make it support by the support 12 and the spring 30 of the main body 10.

The friction plate 50 is injection-molded with a metal material, one side is formed to be round, the center portion is closely inserted into the guide groove 42 of the flow plate 40 to the surface of the guide groove 42 The guide bar 52 is integrally formed to integrally protrude so that it can be flowed up and down by a plurality of balls 44 formed, and the other side is formed to be flat so that the other side is in contact with the guide rail installed in the hoistway. What is necessary is just to install in the said main body 10.

In order to install the braking device composed of such a plurality of components in the elevator cage 1, first, as shown in Figures 1 to 3, a plurality of springs 30 respectively on both sides of the inside of the main body 10 And one side of the actuator 20 is firmly fixed to the other side central portion of the flow plate 40 so that the flow plate 40 is in close contact with each other at the front end of the spring 30. In the guide groove 42 formed on one side of the plate 40 is inserted into the guide bar 52 protruding and molded on one side of the friction plate 50 tightly provided with a braking device to be firmly installed on one side of the cage (1) The main body 10 may be installed such that the guide rails 7 installed on the hoistway are located between the friction plates 50 provided to face the inside of the main body 10.

In this case, the actuator 20 is in a state in which the wire 5 is pulled by the sensing unit 3, and the flow plate 40 connected to one side of the actuator 20 flows left and right, respectively, to the main body 10. Supported in contact with the support 12 formed therein, the spring 30 is maintained in a compressed state and the friction plate integrated with the guide bar 52 inserted into the guide groove 42 of the flow plate 40 ( 50) is spaced apart a predetermined distance from the guide rail (7) to be in the operating standby state in an emergency.

As shown in FIG. 4A, when the elevator cage 1 is driven at an abnormal speed while the elevator cage 1 is being raised or lowered, the sensing unit 3 detects this and pulls the wire 5 in a pulled state. The actuator is momentarily pushed to operate the actuator 20, and a spring 30 in a compressed state supporting the fluid plate 40 connected to one side of the actuator 20 extends and flows with the fluid plate 40. When the friction plates 50 having the guide bars 52 inserted into the guide grooves 42 of the plate 40 are pushed toward the guide rails 7, the friction plates 50 are tightly coupled to both side surfaces of the guide rails 7. It is in close contact with the vehicle, and the state immediately before braking is achieved.

In this state, as shown in FIG. 4B, when the friction plate 50 is in close contact with the guide rail 7, the end of the guide bar 52 of the friction plate 50 is closed by the friction force. It moves naturally along the guide groove 42 by the ball 44 of the contact with the inner surface of the guide groove of the curved flow plate 40 and the load of the cage (1) that follows is concentrated on the guide bar 52 The guide bar 52 is bent or dropped out, and one side of the friction plate 50 is inserted and fixed in close contact with the other side of the fluid plate 40 so as to be in contact with each other to fix the friction force with the guide rail 7. It will be possible to further increase the braking cage (1).

At this time, when the friction piece 50 moves to the upper or lower portion, as the gap between the fluid plate 40 and the friction plate 50 is narrowed, the fluid plate 40 is applied to the elasticity of the spring 30. It is naturally supported by the left and right flows, respectively, and the flow width is limited by the plurality of support 12 formed in the main body 10 to provide a certain buffering action during the sudden braking of the cage (1) and At the same time, it is preferable that the friction plate 50 is inserted between the flow plate 40 and the guide rail 7 in a flowing shape to minimize the impact on the occupant.

By providing the two-way braking device for the elevator of the present invention as described above, by allowing the braking for the abnormal rise and fall of the cage by the flow plate and friction plate formed in a round to maximize safety in the operation of the elevator as well as its configuration It is a useful invention that can simplify the installation and make installation very simple and easy, and reduce the installation cost.

Claims (1)

In the braking device that is operated when an abnormal speed occurs during operation of the elevator to control and stop the speed of the cage (1), A main body 10 which is firmly fastened and mounted on one side of the cage 1 and integrally formed so as to face support 12 of a predetermined length on both upper and lower sides of the inner side; It is installed on both sides of the main body 10, one side of which is installed to extend into the main body 10, the other side is fixed to the wire 5 of a predetermined length connected to the sensing unit 3 is provided separately An actuator 20 operated by the operation of the unit 3; Springs 30 which are installed to face each of the upper and lower sides of the inside of the main body 10, and having a predetermined elasticity; The upper and lower portions of the spring 30 and the support 12 of the main body 10 are respectively supported, and one end of the actuator 20 extending into the main body 10 is firmly fixed at the center thereof. Each side facing each other, the guide grooves 42 are formed in the longitudinal direction, respectively, on the curved one side of the guide grooves 42, each of the plurality of balls 44 rotatably integrally buried fluid plate ( 40); Guide bars 52 inserted into the guide grooves 42 formed in the flow plate 40 to be in contact with the ball 44 buried in the curved one side thereof to enable the up / down flow are respectively formed in the central portion of one side. Protruding and forming, the other side is a two-way braking device for an elevator, characterized in that the friction plate 50 in contact with the guide rail (7) installed in the hoistway is integrally installed in the main body (10).

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