KR100731198B1 - Emergency braking device for elevator - Google Patents

Abstract

The present invention relates to an emergency braking device for an elevator, and more particularly to an emergency braking device for an elevator having a new structure capable of firmly braking the rope during an emergency braking with a simple overall structure.

To this end, the present invention is a base frame having a first side panel and a second side panel via the rope through the inside, a fixing plate provided between each side panel of the base frame, and each of the rope between It is configured to be movable between the side panels and installed in a state opposite to the fixed plate and comprises a moving plate for braking the rope together with the fixed plate, each formed on each side panel, toward the bottom of each side panel A guide hole inclined toward the fixing plate; A moving shaft which is coupled to the moving plate through the guide holes and is moved under the guidance of the guide holes; In addition, an emergency braking device for an elevator is provided, wherein the restraining assembly is configured to restrain the downward movement of the moving shaft while the operation is performed by the governor.

Description

Emergency brake device of an elevator

1 is an exploded perspective view for explaining the emergency braking device for an elevator according to a first embodiment of the present invention

2 and 3 are perspective views for explaining the operating state of the emergency braking device for an elevator according to a first embodiment of the present invention

4 and 5 are schematic diagrams for explaining an installation example of the emergency braking device for an elevator according to a first embodiment of the present invention.

6 and 7 are a plan view for explaining the operating state of the emergency braking device for an elevator according to a first embodiment of the present invention

8 and 9 are side views for explaining the operating state of the emergency braking device for an elevator according to a first embodiment of the present invention

10 and 11 are perspective views for explaining the operating state of the emergency braking device for an elevator according to a second embodiment of the present invention

12 and 13 are side views for explaining an operating state of the emergency braking device for an elevator according to a second embodiment of the present invention.

Explanation of symbols for the main parts of the drawings

100. Base frame 110. First side panel

120. Second side panel 130. Base

140.Back plate 200.Retaining plate

210. Compression Spring 220. Brake Lining

300. Moving plate 320. Brake lining

411,412. Guide ball 421,422. Moving shaft

500. Restraint assembly 510. First connecting link

511. Through hole 520. Restraint jaw

530. Restraint protrusion 540. Connecting member

550. Returning section 551. First coupling bracket

552. Second engagement bracket 553. Return member

560. Support tube 600. Elastic member

The present invention relates to an emergency braking device for an elevator, and more particularly, an emergency braking device for an elevator configured to allow the rope to be more stably fixed during emergency braking of the elevator, and the operation can be made as simply as possible. It is about.

In general, an elevator is a device for transporting passengers while lifting in a vertical direction in a high-rise building.

The elevator is connected to a plurality of ropes to be pulled by a motor, ascend, descend.

In particular, the elevator is provided with an emergency braking device for coping with an emergency accident (for example, when slipping or falling above a specified speed or rising above a prescribed speed) that may occur while lifting in the vertical direction.

Korean Patent No. 10-0196205 and Korean Patent No. 10-0221960 disclose the above-described conventional emergency braking device for an elevator.

That is, the conventional emergency braking device for an elevator is configured to press the ropes together while the pair of brake linings are operated in a direction perpendicular to the direction of movement of the ropes so that the elevator can be emergencyly stopped.

However, the aforementioned emergency braking device for an elevator has a disadvantage in that a very large pressing force is required for the pair of brake linings in order to brake the rope with the pair of brake linings.

In other words, when the two brake linings are not provided with sufficient pressing force for braking the ropes, the ropes are slid from the two brake linings due to the weight of the elevator, causing a safety accident.

In addition, the emergency braking device for an elevator according to the prior art described above has a disadvantage that the assembly operation is difficult because the overall operating structure is complicated, resulting in a decrease in productivity.

The present invention has been made to solve the above-mentioned conventional problems, an object of the present invention is to provide an emergency braking device for an elevator of a new structure capable of firmly braking the rope during emergency braking as well as the overall structure is simple. have.

An emergency braking device for an elevator of the present invention for achieving the above object is provided between the base frame having a first side panel and a second side panel via the rope through the inside, and each side panel of the base frame A fixed plate and a movable plate configured to be movable between the side panels with the rope interposed therebetween and fixed to the fixed plate, and configured to brake the rope together with the fixed plate, respectively formed on each side panel. Guide holes formed to be inclined toward the fixing plate toward the bottom of each side panel; A moving shaft which is coupled to the moving plate through the guide holes and is moved under the guidance of the guide holes; The restraint assembly which restrains the downward movement of the moving shaft while the operation is performed by the governor, further comprises a restraint assembly for releasing the restraint of the moving shaft during emergency braking.

Here, the restraint assembly is one end is rotatably coupled to the outer surface of the first side panel, the other end is a first connection link connected to the moving shaft, a restraining jaw formed on the circumferential surface of the first connection link, And a restraining protrusion selectively caught by the restraining jaw, and a connecting member connected to the restraining protrusion and receiving a tensile load from the governor during emergency braking so that the restraining protrusion is separated from the restraining jaw.

At this time, the connecting member is characterized in that one end is connected to the opposite side of the portion of each of the restraint projections engaging the restraining jaw, the other end is connected to the governor.

In addition, the restraint assembly is characterized in that it further comprises a return configured to return the connecting member to the initial position upon release of the tensile load provided to the connecting member.

In this case, the return unit supports the movement of the connecting member, and surrounds one end of the connecting member to support the first coupling bracket coupled to the outer surface of the first side panel, the movement of the restraining protrusion, the restraining protrusion A second coupling bracket coupled to an outer surface of the first side panel and surrounding the first side panel, and installed between the restraint protrusion and the first coupling bracket to release the restraining protrusion when the tension load provided from the governor to the connecting member is returned to its original position. Characterized in that it comprises a resilient member to be restored to return.

In addition, the first connection link is formed with a through hole through which the end of the moving shaft is penetrated, and the through hole is elongated along the longitudinal direction of the first connection link to allow movement toward the fixed plate while the moving shaft is moved downward. It is characterized by.

The moving shaft may include a first moving shaft provided on an upper side of the moving plate and a second moving shaft provided on a lower side of the moving plate, and guide holes formed on each side panel may have both ends of the first moving shaft. And a pair of second guide balls for supporting both ends of the pair of first guide balls and both ends of the second moving shaft.

In addition, on the opposite surface of the fixed plate and the moving plate is characterized in that the brake lining for further improving the friction force with the rope is installed.

In addition, the emergency auxiliary braking is characterized in that it further comprises a moving aid for assisting the moving down of the moving plate.

In this case, one end of the moving aid is connected to the first side panel, and the other end is connected to the first connection link so that when the restraint of the moving plate is released, the moving plate moves downward by rotating the first connection link. Characterized in that it comprises a resilient member that is operated.

Hereinafter, preferred embodiments of the emergency braking apparatus for an elevator according to the present invention will be described in more detail with reference to FIGS. 1 to 13.

As shown in FIGS. 1 to 3, the emergency braking device for an elevator according to the first embodiment of the present invention includes a base frame 100, a fixed plate 200, a moving plate 300, and guide holes 411 and 412. And the moving shafts 421 and 422 and the restraining assembly 500.

The emergency braking device for an elevator according to the first embodiment of the present invention as described above will be described as follows.

First, the base frame 100 will be described with reference to FIGS. 1 to 3.

The base frame 100 is a portion constituting the body of the emergency braking device for an elevator, and is a portion fixedly installed in the machine room of the elevator device.

At this time, the installation position of the base frame 100 is made differently depending on the emergency situation. For example, when applied for emergency braking according to the rapid descending of the elevator (1) is installed to surround the rope (3) between the elevator (1) and the pulley (2) of the machine room, as shown in FIG. When applied for emergency braking according to the rapid rise, it is installed to surround the rope (3) between the pulley (2) and weight (4) of the machine room as shown in FIG. In the first embodiment of the present invention, the emergency braking device is used for emergency braking according to the rapid descending of the elevator 1, and the base frame 100 is located on the upper part of the elevator 1 as an example.

The base frame 100 is coupled to the bottom of the first side panel 110 and the second side panel 120 and the side panels 110 and 120 forming both sides, the base fixed to the upper surface of the machine room It comprises a 130 and the back plate 140 forming a back.

In this case, the rope 3 is connected between the side panels 110 and 120 of the base frame 100.

Next, the fixing plate 200 will be described with reference to FIGS. 1 to 3.

The fixing plate 200 is configured to forcibly brake the rope 3 via the base frame 100 together with the moving plate 300 to be described later, and between the side panels 110 and 120 of the base frame 100. The side panels 110 and 120 are installed to face in a vertical direction.

In particular, the fixing plate 200 is installed in a state that is elastically supported by at least one compression spring (210). At this time, the compression spring 210 is inserted between the back plate 140 and the fixed plate 200 to form the back of the base frame 100 between the fixed plate 200 and the moving plate 300 When the rope 3 is braked, it serves to assist the braking of the rope 3 to be more firmly performed.

That is, the compression spring 210 has a restoring force so that the fixed plate 200 is advanced toward the movable plate 300 even when the fixed plate 200 is retracted toward the rear plate 140 by braking of the rope 3. By providing the rope 3 is configured to be firmly braked between the fixed plate 200 and the moving plate 300.

Of course, the fixing plate 200 may be fixed so that the flow is not made at all between the pair of side panels (110, 120).

Next, the moving plate 300 will be described with reference to FIGS. 1 to 3.

The moving plate 300 is configured to selectively brake the ropes 3 passing through each other along with the fixed plate 200.

The movable plate 300 is configured to move forward and backward while being moved up and down in a state in which the fixing plate 200 is installed between the side panels 110 and 120 with the rope 3 therebetween.

That is, the moving plate 300 is not simply configured to move forward and backward, but is configured to brake the rope 3 while approaching the fixed plate 200 when the lowering operation is performed.

In this case, the movement of the moving plate 300 toward the fixing plate 200 during the lowering is made by the guide holes 411 and 412 and the moving shafts 421 and 422 which will be described later.

In particular, the first embodiment of the present invention suggests that the brake linings 220 and 320 are further installed on the opposing surfaces between the fixed plate 200 and the movable plate 300 described above.

In this case, the brake lining (220,320) by the friction between the fixing plate 200 and the moving plate 300 and the rope 3 to facilitate the downward movement of the moving plate 300 and at the same time the The rope 3 serves to be more firmly fixed between the fixing plate 200 and the moving plate 300.

Next, the guide holes 411 and 412 and the moving shafts 421 and 422 will be described with reference to FIGS. 1 to 3.

The guide holes 411 and 412 and the moving shafts 421 and 422 guide the lifting movement of the moving plate 300 and the moving plate 300 moves downward when the moving plate 300 moves downward. It serves to guide you to move toward.

In this case, the guide holes 411 and 412 are holes formed along the moving direction (up and down direction) of the movable plate 300 among the side panels 110 and 120, and are inclined toward the fixing plate 200 toward the bottom. Is formed.

In addition, the moving shafts 421 and 422 are configured to be coupled to the moving plate 300 through the guide holes 411 and 412 in a state in which portions thereof are exposed toward the outside of the side panels 110 and 120.

Accordingly, when the moving shafts 421 and 422 are lowered, the movable plates 300 are moved toward the direction in which the fixed plate 200 is positioned (hereinafter referred to as “rear”) by the guidance of the guide holes 411 and 412. ) Is to brake the rope 3 existing between the fixing plate 200 in the form of a wedge, for example.

In particular, it is preferable that at least one of the moving shafts 421 and 422 is provided according to the size of the moving plate 300.

Accordingly, in the first embodiment of the present invention, the moving shafts 421 and 422 are provided below the moving plate 300 and the pair of the first moving shafts 421 and the moving plate 300. And a pair of second moving shafts 422, wherein each of the guide holes 411 and 412 includes a pair of first guide balls 411 for supporting the first moving shafts 421, respectively. A pair of second guide holes 412 for supporting each of the second moving shafts 422 are shown.

The above-described configuration is a series of configurations for supporting the moving plate 300 so that a more stable movement can be made when the moving plate 300 is moved (ascended and moved back and forth).

Next, the restraint assembly 500 will be described with reference to FIGS. 1 to 3.

The restraint assembly 500 is operated by the governor (see FIGS. 4 and 5) 10 to selectively restrain the downward movement of the movable plate 300, during emergency braking of each of the movable shafts 421 and 422. It serves to release the restraint of the first moving shaft (421).

That is, the lowering movement of the movable plate 300 is not made by the restraint assembly 500, and thus the movable plate 300 is spaced apart from the fixed plate in a state in which the power failure or emergency braking is not performed. The rope 3 is not braked because it is maintained.

At this time, the governor 10 confirms that the elevator is running at a speed exceeding a predetermined reference speed, and the device for controlling the emergency braking of the elevator 1 by controlling the emergency braking device according to the check result to be.

The restraining assembly 500 includes a first connection link 510, a restraining jaw 520, a restraining protrusion 530, and a connecting member 540.

One end of the first connection link 510 is rotatably coupled to an outer surface of the first side panel 110, and the other end thereof is connected to the first moving shaft 421. In this case, the first connection link 510 is formed with a through hole 511 through which the end of the first moving shaft 421 passes, and the through hole 511 has a length of the first connection link 510. It is formed long along the direction. The through hole 511 is a rotation path of the first connection link 510 and the first guide hole 411 when the first movement shaft 421 is moved toward the fixed plate 200 while moving downward It is a configuration for preventing interference that may be caused by different shapes.

In addition, the restraining jaw 520 is formed on a circumferential surface of a portion of the first connection link 510 that is coupled to the first side panel 110, and the restraining protrusion 530 is formed on the restraining jaw 520. It is installed to be selectively engaged.

In addition, the connection member 540 receives a tensile load from the governor 10 during emergency braking of the elevator, and operates to selectively detach the restraining protrusion 530 from the restraining jaw 520.

That is, the connecting member 540 releases the restraint of the movable plate 300 by the interlocking of the restraining protrusion 530 and the restraining jaw 520 during emergency braking of the elevator 1 to the movable plate 300. The rope 3 can be braked while being lowered by its own weight and friction with the rapidly flowing rope 3.

At this time, one end of the connecting member 540 is connected to a portion opposite to the portion engaged with the restraining jaw 520 of each portion of the restraining protrusion 530, and the other end is connected to the governor 10. .

This configuration is to allow the restraint protrusion 530 to be separated from the restraint jaw 520 most smoothly.

Of course, although not shown, the connection member 540 may be configured to separate the restraining protrusion 530 in a direction perpendicular to the length direction of the first connection link 510.

Meanwhile, the first embodiment of the present invention suggests that the return unit 550 is further included in the above-described restraint assembly 500.

At this time, the return unit 550 is configured to return the connection member 540 to the initial position upon release of the tensile load provided from the governor 10 to the connection member 540.

The return unit 550 is configured to include a first coupling bracket 551, a second coupling bracket 552, and a restoration member 553.

Here, the first coupling bracket 551 is coupled to the outer surface of the first side panel 110 while surrounding one end of the connection member 540 is configured to support the movement of the connection member 540, the The second coupling bracket 552 is coupled to the outer surface of the first side panel 110 while surrounding the restriction protrusion 530 and configured to support the movement of the restriction protrusion 530.

In addition, the restoring member 553 may be installed between the restraining protrusion 530 and the first coupling bracket 551 to provide restoring force to the restraining protrusion 530.

That is, the restoring member 553 may be caught by the restraining protrusion 530 again by the restoring force when the tensile load provided from the governor 10 to the connecting member 540 is released. It serves to return and consists of a common coiled spring.

In this case, reference numeral 560 is a support tube formed to surround the connecting member 540 while preventing the bending of the connecting member 540 and supporting the connecting member 540 to receive a tensile load in the correct direction. The first coupling bracket 551 is configured to fix the support tube 560 to the first side panel 110 to support the movement of the connection member 540.

Hereinafter, an operation process of the emergency braking apparatus for an elevator according to the first embodiment of the present invention described above will be described with reference to FIGS. 1 to 9.

First, the emergency braking device is not operated while the general elevator is running.

That is, as shown in FIGS. 2, 6, and 8, the movable plate 300 is positioned above the fixed plate 200 in a state of being separated from the fixed plate 200, and the movable plate 300 and the The rope 3 passing between the fixing plates 200 maintains a state in which it can be freely moved.

In this case, the movable plate 300 may not move downward by the restraint assembly 500.

That is, the parts connected to the first moving shaft 421 based on the rotation center as shown in FIG. 2 of each part of the first connection link 510 constituting the restraint assembly 500 are positioned above, and restrained. The protrusion 530 is supported by the second coupling bracket 552 in engagement with the restraining jaw 520 formed in the first connection link 510, and the connection member 540 is provided with a tension provided from the governor 10. Since the load is released, the first connection link 510 cannot be rotated.

In the state as described above, when the emergency situation, such as the rapid descending of the elevator 1 is confirmed by the governor 10, the governor 10 will provide a tensile load for pulling the connecting member 540.

Accordingly, the connecting member 540 is pulled toward the governor 10, and the restraining protrusion 530 connected to the connecting member 540 is the restraining jaw 520 formed in the first connecting link 510. The first connection link 510 is separated from the free rotation thereof.

By the above-described series of motions, the restraining force that restrains the downward movement of the movable plate 300 is released. As a result, the movable plate 300 is downwardly moved to abutment with the rope 3 by its own weight.

In this case, the movable plate is provided with the frictional force of the rope 3, in which case the movable plate 300 is also lowered by friction with the rope 3 in consideration of the fact that the rope 3 is rapidly descending. The movement is made. That is, it moves in the same direction as the flow direction of the rapidly moving rope (3).

In the above process, each of the moving shafts 421 and 422 coupled to the moving plate 300 is moved while being guided by each of the guide holes 411 and 412 formed in the side panels 110 and 120, respectively. Considering that the fixed plate 200 is formed to be inclined toward the lower direction toward the lower side, the movable plate 300 moves toward the fixed plate 200 at the same time as it descends.

In particular, the first movement shaft 421 is formed on the first connection link 510 while the rotation of the first connection link 510 in accordance with the downward movement of the first movement shaft 421 in the above process. Since it moves along the through hole 511, even when the first movement shaft 421 moves downward, interference does not occur in the rotation operation of the first connection link 510.

Therefore, the rope 3 passing between the fixed plate 200 and the movable plate 300 is gradually braked by the pressing force between the fixed plate 200 and the movable plate 300, and eventually, the movable plate 300. This wedge shape completely brakes the rope 3 between the fixing plate 200. Its state is the same as in Figures 3, 7 and 9 attached.

As a result, the elevator 1 is emergency braked by the above-described series of processes.

If the elevator 1 is to be released in the emergency braking state as described above, the moving plate 300 is lifted upward in the state in which the tension load provided from the governor 10 to the connection member 540 is released. Move it.

In this case, as the movable plate 300 moves upward, the first connection link 510 is rotated, and the restraint jaw 520 and the restraint protrusion 530 are rotated by the first connection link 510. The positions coincide with each other.

At this time, when the positions of the restraint jaw 520 and the restraint protrusion 530 coincide with each other, the restraint protrusion 530 is engaged with the restraint jaw 520 by the restoring force of the restoring member 553, thereby causing the governor ( Unless a separate tensile load is provided to pull the connecting member 540 from 10) (unless an emergency braking situation occurs), the rotation of the first connecting link is prevented and the downward movement of the movable plate 300 is also performed. While being prevented, free flow of the rope 3 is maintained.

On the other hand, Figure 10 to 13 attached shows an emergency braking device for an elevator according to a second embodiment of the present invention.

That is, according to the second embodiment of the present invention, it is further suggested that the movement aiding part assists the downward movement of the moving plate 300 so that the braking of the rope 3 may proceed more quickly during the emergency braking.

This is to prevent the safety accident as much as possible by allowing braking of the rope 3 as soon as possible in the event of an emergency.

Here, the movement aid is configured to include an elastic member 600.

In this case, the elastic member 600 is connected to the first side panel 110 and the other end thereof is connected to the first connection link 510 to release the restraint of the movable plate 300. The moving plate 300 is moved downward by rotating the one connection link 510.

In particular, the elastic member 600 suggests that the coil spring is installed on the bottom side relative to the position of the first connection link (510).

Due to the structure according to the second embodiment of the present invention as described above, when the restraint of the movable plate 300 by the restraint assembly 500 is released, the movable plate 300 has a frictional force with the rope 3. The portion connected to the first moving shaft 421 is rapidly lowered along the first guide hole 411 by the restoring force of the elastic member 600.

Therefore, when an emergency situation of the elevator 1 occurs, the elevator 1 is braked more quickly.

As such, the emergency braking device for an elevator according to the present invention can be modified as well as the technical configuration can be added as needed.

As described above, the emergency braking device for an elevator according to each embodiment of the present invention has various effects as described below.

First, the emergency braking device for an elevator according to each embodiment of the present invention improves the reliability of emergency braking by allowing the rope to be braked in a wedge shape between the fixed plate while the moving plate descends due to friction with the rope during emergency braking. Has the effect.

Second, the emergency braking device for an elevator according to each embodiment of the present invention has the effect that the overall structure can be simplified because it does not need a separate driving device for forcibly moving the moving plate during the emergency braking.

Third, the emergency braking device for an elevator according to the second embodiment of the present invention has an effect of braking the rope as quickly as possible by providing a moving aid.

Claims (11)

A base frame having a first side panel and a second side panel through which the rope passes along an interior thereof, a fixing plate provided between each side panel of the base frame, and the fixing plate between the side panels with the rope interposed therebetween. And a movable plate configured to be movable in a state of being installed opposite to the brake plate and to brake the rope together with the fixed plate. Guide holes respectively formed on the side panels, the guide holes being inclined toward the fixing plate toward the bottom of each side panel; A moving shaft which is coupled to the moving plate through the guide holes and is moved under the guidance of the guide holes; And, An emergency braking device for an elevator comprising: a restraining assembly: restraining the downward movement of the moving shaft while the operation is performed by a governor, and releasing the restraining of the moving shaft during emergency braking. The method of claim 1, The restraint assembly is One end is rotatably coupled to the outer surface of the first side panel, the other end and the first connecting link connected to the moving shaft, A restraining jaw formed on a circumferential surface of the first connection link, A restraining protrusion selectively caught on the restraining jaw, And a connecting member connected to the restraint protrusion and configured to receive a tensile load from the governor during emergency braking so that the restraint protrusion is deviated from the restraint jaw. The method of claim 2, The connecting member One end thereof is connected to the opposite side of the portion of each of the restraint projections engaging the restraining jaw, the other end is connected to the governor, the emergency braking device for an elevator. The method of claim 2, The restraint assembly And a return unit configured to return the connection member to its initial position upon release of the tensile load provided to the connection member. The method of claim 4, wherein The return unit A first coupling bracket supporting the movement of the connection member and being coupled to an outer surface of the first side panel while surrounding one end of the connection member; A second coupling bracket which supports the movement of the restraint protrusion and is coupled to an outer surface of the first side panel while surrounding the restraint protrusion; Emergency braking for an elevator, comprising: a restoring member installed between the restraining protrusion and the first coupling bracket to restore the restraining protrusion to its original position upon release of a tensile load provided from the governor to the connecting member. Device. The method of claim 2, The first connection link is formed with a through hole through which the end of the moving shaft passes, The through hole is an emergency braking device for an elevator, characterized in that formed along the longitudinal direction of the first connecting link to move toward the fixed plate while the moving shaft is moved downward. The method of claim 1, The moving shaft includes a first moving shaft provided on the upper side of the moving plate and a second moving shaft provided on the lower side of the moving plate, The guide hole formed in each side panel includes a pair of first guide balls for supporting both ends of the first moving shaft and a pair of second guide balls for supporting both ends of the second moving shaft. Emergency braking device for elevator. The method according to any one of claims 1 to 7, An emergency braking device for an elevator, characterized in that a brake lining is further provided on the opposite surface of the fixed plate and the moving plate to improve friction with the rope. The method of claim 8, Emergency braking device for an elevator, characterized in that it further comprises a movement aid for assisting the lowering movement of the moving plate during emergency braking. The method according to any one of claims 1 to 7, Emergency braking device for an elevator, characterized in that it further comprises a movement aid for assisting the lowering movement of the moving plate during emergency braking. The method of claim 10, The movement aid One end is connected to the first side panel, the other end is connected to the first connection link includes a resilient member that is operated to move the moving plate downward by rotating the first connection link when the restraint of the movable plate is released. Emergency braking device for an elevator, characterized in that configured.

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