KR20040087033A - Rope braking device for an elevator - Google Patents

Abstract

PURPOSE: A rope braking system for an elevator is provided to shorten a clamping response time of a moving plate without using a spring between the moving plate and a fixing plate. CONSTITUTION: A rope braking system for an elevator comprises a single frame housing(200); a cylinder(300) mounted on the frame housing and having a restoration unit for restoring a rod; a guide block(400) facing the inner side of the frame housing; a moving plate(500) coupled to the rod of the cylinder and having a guide block housing in such a manner that the moving plate moves along the guide block; a fixing plate(600) facing the moving plate; and a lining(700).

Description

Rope braking device for an elevator

The present invention relates to a braking device for an elevator, and more particularly, to prevent safety accidents due to sliding and overspeed of an elevator by clamping a rope when a slip phenomenon occurs or a faster operation than a normal speed occurs. The present invention relates to an elevator rope braking device that can be prevented.

In general, an elevator installed in a building moves passengers or cargo while moving up and down vertically, and is lifted and lowered without flow by a rope pulled by a motor and a guide shoe guided to a guide rail. Since the elevator is lifted and lowered by a rope, a braking device for clamping the rope is installed separately in addition to the main braking device because it causes a great casualty when braking is not performed or precise braking is not performed.

1A and 1B show an example of such a conventional rope brake device for an elevator, and as shown, a fixing plate 3 is coupled to and installed between a housing 2 having a plate shape, and the front of the fixing plate 3 is shown. On the rear side, the movable plate 4 and the support plate 5 are fastened to be connected by four connecting members 6. On the other hand, linings 7 are respectively provided on the opposing surfaces of the fixed plate 3 and the movable plate 4, and coil springs 8 are provided on the connecting member 6 between the fixed plate 3 and the movable plate 4. do. In addition, two hydraulic cylinders 9 are fixed to the support plate 5.

Therefore, in the conventional elevator rope braking device 1, when a signal for clamping the rope R is applied as shown in FIG. 1B, hydraulic pressure is supplied from the hydraulic device not shown to the hydraulic cylinder 9. The plunger 9a of the hydraulic cylinder 9 is extended, whereby the support plate 5 is conveyed to the rear side. Since the movable plate 4 is connected to the supporting plate 5 by the connecting member 6, the movable plate 4 is transferred to the fixed plate 3 together with the rear transfer of the supporting plate 5, thereby clamping the rope R.

On the other hand, when the hydraulic pressure of the hydraulic device not shown due to the clamping release of the rope R is lowered, the coil spring 8 between the fixed plate 3 and the movable plate 4 is elastically restored, thereby the movable plate 4 ) Is conveyed to the front side. And the support plate 5 is also transferred to the fixing plate 3 side to release the clamping of the rope (R).

However, since the conventional rope rope braking device 1 is an indirect pressurization method in which the movable plate 4 is operated in accordance with the transfer of the support plate 5, a loss of kinetic energy is inevitably generated, and more reliably. The rope R could not be braked. Thus, a problem arises in that a satisfactory braking completion time of the movable plate 4 cannot be obtained.

Furthermore, in the related art, the clamp performance of the fixed plate 3 and the movable plate 4 is degraded due to the plurality of coil springs 8 installed between the fixed plate 3 and the movable plate 4, and the coil springs are caused by repeated clamping. The problem that the elastic restoring force of (8) is easily lowered occurs, and in particular, the gap between the fixed plate 3 and the movable plate 4 is widened due to the coil spring 8, so that the clamping of the movable plate 4 is faster. The response time could not be achieved.

In addition, conventionally, four connecting members 6 having two housings 2, a fixed plate 3, a support plate 5, a movable plate 4, two hydraulic cylinders 9 and a coil spring 8 are provided. Since many parts are consumed, production cost has been greatly increased, which makes it difficult to mass-produce products with price competitiveness.

On the other hand, in the case of another conventional elevator rope braking device (Domestic Utility Model Registration No. 20-0221450) designed to improve the above problems, as shown in Figure 2a, the hydraulic pressure inside the two housings 11 The support plate 23 and the movable plate 35 to which the cylinder 25 is coupled are installed in the housing 11 by four connecting members 27 penetrating through the projections 11a of the respective housings 11.

The fixing plate 33 is fixedly fastened to the front surface of the housing 11 by the connecting member 27, and the movable plate 35 is connected to the connecting member 27 between the movable plate 35 and the fixing plate 33. A ball spring 29 for returning to its original position is installed, and linings 33a and 35a for clamping the rope R are installed on opposite surfaces of the movable plate 35 and the fixed plate 33.

Therefore, the conventional rope brake device for another elevator 10 has a plunger 25a caused by the expansion of the hydraulic cylinder 25 when a signal for clamping the rope R is applied as shown in FIG. 2B. It is extended, and thus the movable plate 35 coupled with the plunger 25a is transferred to the fixed plate 33 to clamp the rope R by the linings 33a and 35a.

And when the hydraulic pressure of the hydraulic device not shown by lowering the clamping of the rope (R) is lowered, the ball spring 29 installed in the connecting member 27 is restored and the movable plate 35 is transferred to the support plate 23 side to the rope The clamping of (R) is released.

However, such a conventional elevator rope braking device 10 has solved the conventional problem according to the indirect pressurization method described above, but the movable plate 35 by a plurality of bullet springs 29 as in the conventional technique described above. ), The clamping performance of the fixed plate 33 and the movable plate 35 is reduced. In addition, the elastic restoring force of the tantalum spring 29 is easily weakened due to the repeated clamping. In particular, the interval between the fixed plate 33 and the movable plate 35 is increased due to the tantalum spring 29. There arises a problem that the clamping response time of the movable plate 35 cannot be achieved.

Moreover, the rope brake device 10 for the other conventional elevators has two housings 11, a fixed plate 33, a support plate 23, a movable plate 35, a hydraulic cylinder 25, like the prior art described above. Since it consists of a large number of parts, such as four connecting member 27 consisting of bolts and nuts, the ball spring 29, the production and assembly costs are greatly increased, so that the production of a product having a price competitiveness in reality is very difficult.

The present invention has been made to solve the conventional problems as described above, an object of the present invention is to provide a spring brake between the movable plate and the fixed plate, the elevator rope braking device for shortening the clamping response time of the movable plate To provide.

Another object of the present invention is to provide an elevator rope braking device having a structurally sufficient durability even under a large load due to clamping since one frame housing having a shape for accommodating other parts is used.

Another object of the present invention is to provide an elevator rope braking device that can reduce the number of parts to realize the simplification and miniaturization of the product, thereby improving the appearance of the product and greatly reducing the production and assembly costs of the product.

Figure 1a is a perspective view showing a rope brake device for an elevator according to the prior art,

Figure 1b is a partial plan cross-sectional view showing an operating state according to the prior art,

Figure 2a is a perspective view showing a rope braking device for elevators according to another prior art,

Figure 2b is a partial plan cross-sectional view showing an operating state according to another prior art,

3 is an exploded perspective view showing a rope brake device for an elevator according to the present invention;

4 is an enlarged cross-sectional view showing the structure of a cylinder according to the present invention;

5a and 5b is a plan view showing an operating state according to the present invention,

Figure 6 is an installation of the present invention.

<Description of Symbols for Main Parts of Drawings>

100: rope braking device 200: frame housing

210: cylinder coupling hole 300: cylinder

310: load 320: color

330: cylinder cap 340: spring

350: cylinder fixing plate 400: guide block

500: movable plate 510: guide block housing

520: coupling groove 600: fixed plate

700: liner B: bracket

E: Elevator P: Hoist Pulley

R: Rope

An elevator rope braking apparatus of the present invention for achieving the above object, the elevator rope braking device for clamping the wire rope through the hydraulic oil supplied from the hydraulic device, a single frame housing; A cylinder installed in the frame housing and having a restoring means installed therein for restoring the rod; Guide blocks respectively installed to face the inner surface of the frame housing; A movable plate coupled to the rod of the cylinder and having guide block housings installed at both sides to be transported along the guide block; A fixed plate fixedly installed on an inner surface of the frame housing so as to face the movable plate; Characterized in that the lining is installed on the opposite surface of the movable plate and the fixed plate.

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

3 is an exploded perspective view showing the elevator rope braking apparatus according to the present invention, as shown in the elevator rope braking apparatus 100 is largely frame housing 200, cylinder 300, guide block 400, movable The plate 500, the fixing plate 600 and the lining 700 is composed of.

First, the frame housing 200 is to be installed on the frame of the hoisting pulley (P) side as shown in Figure 3 and 6, the bracket (B) is fastened on both sides, and formed as a single body for high rigidity and simple appearance In particular, the planar shape to accommodate the guide block 400, the movable plate 500, the fixed plate 600 and the like " Molded into shape.

The cylinder 300 receives the pressure oil from the hydraulic device, not shown, and transfers the movable plate 500 back and forth. As illustrated in FIGS. 3 and 4, the cylinder 300 is connected to the cylinder coupling hole 210 of the frame housing 200. After the cylinder 300 was inserted, the cylinder fixing plate 350 was firmly fastened to the front of the frame housing 200 to cover the cylinder cap 350 by a bolt or the like. The cylinder 300 has a rod 310 having a collar 320 formed therein, and a rod 310 having a spring 340 as an example of a restoring means between the cylinder cap 330 and the collar 320. ) Was returned to its original position.

The guide block 400 guides the front and rear conveyance of the movable plate 500, and fixedly installed to face the inner left and right sides of the frame housing 200 as shown in FIG.

Movable plate 500 is to clamp the rope (R) in accordance with the operation of the cylinder 300, as shown in Figure 3 to form a coupling groove 520 on both sides, each coupling groove 520 guides Combination of the block housing 510 was made to smoothly move back and forth along the guide block 400.

The fixed plate 600 is to clamp the rope (R) together with the movable plate 500, as shown in Figure 3 fixed to the inner front side of the frame housing 200, such fixed plate 600 And lining 700 is installed on the opposite surface of the movable plate 500 to clamp the rope (R) more reliably.

The operation and effect of the present invention configured as described above will be described in detail with reference to the operation example of the elevator E.

When the elevator E is stopped in normal operation for safety of the elevator E, the braking force of the main braking device of the elevator E decreases, or the friction force of the rope R and the hoist pulley P occurs. However, the elevator E may not be stably stopped on the destination floor, and a very dangerous situation may occur in which a slip occurs or a sudden rise or fall beyond the rated speed occurs when a passenger rides down.

In this case, a separate control unit (not shown) operates the hydraulic device immediately after detecting such a situation to instantly provide hydraulic pressure to the cylinder 300, whereby the rod 310 of the cylinder 300 is shown in FIG. As described above, the spring 340 is momentarily transferred to the front side while overcoming the elastic force of the spring 340.

In addition, the movable plate 500 coupled to the rod 310 may be rapidly clamped to the rope R while being instantaneously transferred to the fixed plate 600 along the guide block 400 as shown in FIGS. 5A and 5B. Therefore, the elevator E is stopped in various unexpected situations, such as a decrease in the frictional force of the hoisting pulley P, or the stop state is safely maintained, thereby making it possible to more reliably secure the passengers on boarding and the passengers on boarding.

On the other hand, when the elevator E is operating normally, the hydraulic pressure of the hydraulic device (not shown) is lowered, thereby lowering the hydraulic pressure of the cylinder 300. Therefore, the rod 310 is conveyed to the rear by the elastic restoring force of the spring 340, the movable plate 500 coupled with the rod 310 is also conveyed to the rear side along the guide block 400 rope (R) Clamping is released.

As described above, the elevator rope brake device 100 of the present invention is not provided with four carbon springs 29 between the movable plate 500 and the fixed plate 600, as in the prior art, and is provided in the single cylinder 300. Since the single spring 340 is installed, it is possible to more narrowly set the distance between the movable plate 500 and the fixed plate 600. Accordingly, the clamping resistance is relatively reduced, the clamping response time of the movable plate 500 is greatly shortened, and the appearance of the rope braking device 100 can be made smaller.

In addition, since the present invention uses a single frame housing 200 having a shape for accommodating several parts, as shown in FIG. 3, the present invention has high rigidity in terms of shape and sufficient durability even for a large load acting by clamping. And the frame housing 200 of the present invention to accommodate the various parts " Forming a plane in the shape "provides a simple and elegant appearance beauty in appearance.

In addition, since the present invention does not use the two housings 11, the plurality of connecting members 27, and the carbon spring 29, which are essentially used in the prior art, the number of parts is reduced and the structure of the rope braking device 100 is reduced. This greatly simplifies the production cost and significantly reduces the assembly process.

On the other hand, the above-described embodiment is merely to explain an example of a preferred embodiment of the present invention, the scope of the present invention is not limited to such, and can be changed as appropriate within the scope of the same idea.

As described above, the present invention installs a spring on the rod of the cylinder for the return of the movable plate, thereby reducing the distance between the movable plate and the fixed plate and preventing excessive resistance by the spring during clamping. Therefore, the clamping response time of the movable plate is drastically shortened, and thus there is a very useful effect of further increasing the emergency response and safety of the elevator.

In addition, the present invention is directed to a planar " "The use of a single frame housing in shape has high rigidity in the shape of the shape. Therefore, it has sufficient durability against large loads acting by clamping, and has a useful effect of providing a simple and beautiful appearance.

In addition, the present invention realizes a simplified and miniaturized product structure by reducing the number of parts, thereby improving the appearance of the product and significantly reducing the production and assembly costs of the product, thereby securing a superior price competitiveness. There is also a useful effect.

Claims (3)

In the elevator rope braking device for clamping the wire rope through the hydraulic oil supplied from the hydraulic device, A single frame housing 200; A cylinder 300 installed in the frame housing 200 and having a restoring means installed therein for restoring the rod 310 therein; Guide blocks 400 installed to face the inner surface of the frame housing 200; A movable plate 500 coupled to the rod 310 of the cylinder 300 and having guide block housings 510 installed at both sides thereof to be transported along the guide block 400; A fixed plate 600 fixedly installed on an inner surface of the frame housing 200 so as to face the movable plate 500; Elevator braking device comprising a lining (700) installed on the opposite surface of the movable plate (500) and the fixed plate (600). The flat housing of claim 1, wherein the frame housing 200 has a planar shape to accommodate components such as a guide block 400, a movable plate 500, a fixed plate 600, and the like. Elevator rope braking apparatus, characterized in that formed in the shape. The elevator rope braking apparatus according to claim 1, wherein the restoring means of the cylinder (300) is provided with a spring (340) inside the cylinder (300) to return the rod (310) to its original position.