KR100731196B1 - Emergency brake device of an elevator - Google Patents

Abstract

An emergency braking apparatus for an elevator is provided to improve reliability of emergency braking by braking a rope between a moving plate and a fixed plate in a wedge shape. An emergency braking apparatus for an elevator includes a base frame(100), a fixing plate(200), a moving plate(300), a guide unit(400), a constraining unit(500), and a constrain releasing unit(600). The base frame(100) has first and second side panels(110,120) through which a rope passes along the inside thereof. The fixing plate(200) is installed between the side panels(110,120) of the base frame(100). The moving plate(300) is movably installed to be opposite to the fixing plate(200) between the side panels(110,120). The moving plate(300) brakes the rope together with the fixing plate(200). The guide unit(400) guides a lifting movement of the moving plate(300), and guides the moving plate(300) to be moved along a direction in which the fixing plate(200) is positioned. The constraining unit(500) constrains the lift movement of the moving plate(300) selectively. The constraining release unit(600) release constraining of the moving plate(400) in case of emergency braking.

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

Figure 2 is a perspective view of the assembled state for explaining the emergency braking device for an elevator according to a first embodiment of the present invention

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

5 and 6 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

7 and 8 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

9 and 10 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

11 to 13 are side views for explaining an operating state of the emergency braking device for an elevator according to a third 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

400. Guides 411,412. Guide ball

421,422. Axis of travel 500. Constraints

510. First link 511. Through hole

520. Restraint Jaw 530. Restraint Projection

600. Release restraint 610. Solenoid

620. Plungers 630. Connecting members

700. Movement aid 710. Second connection link

720. Resilient member 800. Lift assembly

810. Drive motor 820. Gear section

830. Pinion 840. Power transmission means

The present invention relates to an emergency braking device for an elevator, and more particularly, to make the rope more stably fixed during emergency braking of an elevator, the operation of the emergency braking for the elevator of a new structure configured so that the operation can be made as simply as possible. Relates to a device.

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 process is difficult because the overall operation structure is complicated, resulting in reduced 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 comprises a base frame having a first side panel and a second side panel via the rope through the interior; A fixing plate installed between each side panel of the base frame; A movable plate configured to be movable between the side panels with the rope interposed therebetween and fixed to the fixed plate so as to brake the rope together with the fixed plate; A guide unit guiding the moving plate to move in the direction in which the fixed plate is positioned when the moving plate is moved downward while the lifting plate is moved; A restrainer selectively restraining the downward movement of the movable plate; In addition, the emergency release brake is characterized in that it comprises a restraining release portion: for releasing the restraint of the moving plate by the restraining portion.

Here, the guide portion is formed in each of the side panels, each guide hole inclined toward the fixing plate toward the bottom of each side panel, and a part penetrates each guide hole in a state exposed toward the outside of each side panel It is characterized in that it is configured to include a moving shaft that is coupled to the moving plate to be moved by the guide of each guide hole.

In this case, 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, and guide holes formed in each side panel are both ends of the first moving shaft. A pair of first guide balls for supporting the pair and a pair of second guide balls for supporting both ends of the second moving shaft is preferably configured.

In addition, one end of the restraint part is rotatably coupled to an outer surface of the first side panel, and the other end includes a first connection link connected to the moving shaft, a restraining jaw formed on a circumferential surface of the first connection link, and Characterized in that it comprises a restraining projection selectively caught on the restraint jaw.

In this case, the first connection link is formed with a through hole through which the end of the moving shaft penetrates, and the through hole is elongated along the longitudinal direction of the first connection link so as to move toward the fixed plate while the moving shaft is moved downward. This is preferred.

The restraint release part may be configured to selectively separate the restraint protrusion from the restraint jaw.

At this time, the restraining release portion is characterized in that configured to space the restraining projection in the direction perpendicular to the longitudinal direction of the first connection link, or in the longitudinal direction of the first connection link.

In addition, the restraining release portion is characterized in that it comprises a solenoid fixed to the base frame, and a plunger to project the outside of the solenoid in accordance with the flow of current to the solenoid to separate the restraining projection from the rotating part.

In addition, the present invention is characterized in that it further comprises a movement aid for assisting the downward movement of the moving plate during emergency braking.

In this case, one end of the movement auxiliary part is rotatably coupled to the outer surface of the second side panel, the other end is connected to the second connecting link connected to the moving shaft, and one end is connected to the side panel provided with the second connecting link, The other end is connected to the connection link is characterized in that it comprises a resilient member which is operated to move the moving plate downward by rotating the second connection link when the restraint of the moving plate is released.

In addition, one end of the restraint part is rotatably coupled to an outer surface of the first side panel, and the other end includes a first connection link connected to the moving shaft. When resupply, it is characterized in that the lifting assembly is further provided to restrain the moving plate to move upward by rotating the first connection link.

At this time, the elevating assembly is a drive motor for providing a driving force, a gear portion which is formed on the circumferential surface of the first connection link is rotated by receiving the driving force of the drive motor, and transmitting the driving force of the drive motor to the gear portion It is characterized by including a pinion.

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

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.

1 and 2, the emergency braking apparatus 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 a guide unit 400. And a restraining part 500 and a restraining part 600.

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 FIG. 1.

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, it is installed to surround the rope (3) between the elevator 1 and the pulley (2) of the machine room, as shown in Figure 3 attached, 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, and the base frame 100 is located at the top of the elevator 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 FIG. 1.

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 and 2.

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.

At this time, the movement of the moving plate 300 toward the fixed plate 200 during the lowering is performed by the guide unit 400 to 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 unit 400 will be described with reference to FIGS. 1 and 2.

The guide unit 400 guides the lifting movement of the moving plate 300 and simultaneously moves the moving plate 300 toward the fixed plate 200 when the moving plate 300 moves downward. It plays a role.

The guide unit 400 is a guide shaft (411,412) formed in each of the side panels (110, 120), and the moving shaft is coupled to the moving plate 300 is moved under the guidance of each guide hole (410) And 421 and 422.

In this case, each of the guide holes 411 and 412 is a hole formed along the moving direction (up and down direction in the drawing) of the movable plate 300 among the side panels 110 and 120, and the bottom of each side panel 110 and 120. It is formed to be inclined toward the fixing plate 200 gradually.

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 fixing plate 200 is positioned (hereinafter referred to as “rear”) by the guides 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. The pair of second guide holes 412 for supporting the second moving shaft 422, respectively, is 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 restricting part 500 will be described with reference to FIGS. 1 and 2.

The restraining part 500 serves to selectively restrain the downward movement of the moving plate 300. That is, the lowering movement of the movable plate 300 is not made by the restraining part 500, and thus, the rope 3 may not be moved by the movement of the movable plate 300 in a state in which power failure or emergency braking is not performed. Is not braked.

The restraining part 500 includes a first connection link 510, a restraining jaw 520, and a restraining protrusion 530.

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 the circumferential surface of the first connection link 510, and the restraining protrusion 530 is installed to selectively engage the restraining jaw 520.

In this case, the restraining protrusion 530 is configured to be operated by the restraining release part 600 which will be described later.

Next, the restraint release unit 600 will be described with reference to FIGS. 1 and 2, and FIGS. 5 and 6.

The restraint release part 600 is configured to release restraint of the moving plate 300 by the restraint part 500 when emergency braking is applied to the elevator 1.

That is, when an emergency situation of the elevator 1 occurs, the restraining release part 600 releases the restraining force of the restraining part 500 so that the moving plate 300 with its own weight and rapidly flows with the rope 3. While lowering by friction, the rope 3 can be braked.

The restraint release part 600 is configured to selectively space the restraint protrusion 530 of the restraint part 500 from the restraint jaw 520 as described above, and is fixed to the base frame 100 ( 610 and a plunger 620 which protrudes to the outside of the solenoid 610 and moves the restraining protrusion 530 when the flow of current to the solenoid 610 is stopped.

In particular, the first embodiment of the present invention suggests that the restraining release part 600 is configured to space the restraining protrusion 530 in the longitudinal direction of the first connection link 510 (front and rear in the drawing). .

This is to allow the restraint protrusion 530 to be spaced most smoothly from the restraint jaw 520. Of course, although not shown, the restraining release part 600 may be configured to space the restraining protrusion 530 in a direction perpendicular to the length direction of the first connection link 510.

In addition, although the plunger 620 and the restraining protrusion 530 may be configured to be directly coupled to each other in the series of configurations, the operation according to the installation of the restraining release part 600 as shown in FIGS. 1 and 2 is provided. In order to improve the performance and reliability in operation, it is more preferable to be connected to each other using a separate connection member 630.

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. 5 to 8.

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

That is, as shown in FIG. 5, the movable plate 300 is positioned above the fixed plate 200 as shown in FIG. 7 attached to the movable plate 300 while being spaced apart 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 restraining part 500.

That is, a portion connected to the first moving shaft 421 based on the rotation center as shown in FIG. 7 of each portion of the first connection link 510 constituting the restraint part 500 is positioned above, and restrained. The protrusion 530 is positioned so as not to rotate the first connection link 510 while being engaged with the restraining jaw 520 formed in the first connection link 510, and the solenoid of the restraining part 600 is disposed. At 610, the constraining protrusion 530 connected by the plunger 620 and the connecting member 630 is maintained in engagement with the constraining jaw 520 while pulling the plunger 620 while the power is applied. .

In the state as described above, when an emergency situation such as rapid descending of the elevator occurs, the operation of the restraint release unit 600 is made.

That is, the power supply to the solenoid 610 is stopped while the plunger 620 protrudes from the solenoid 610.

Accordingly, the restraining protrusion 530 connected to the plunger 620 by the connecting member 630 is spaced apart from the restraining jaw 520 formed in the first connecting link 510 and the first connecting link 510. Is free to rotate.

By the series of operations described above, the restraining force restraining the downward movement of the movable plate 300 is released. As a result, the movable plate 300 is moved downward to the extent that it comes into contact with the rope 3 by its own weight.

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

Each of the moving shafts 421 and 422 coupled to the moving plate 300 by the above-described series of operations is moved while being guided by each of the guide holes 411 and 412 formed in the side panels 110 and 120. Considering that the 411 and 412 are inclined toward the lower direction toward the bottom, the movable plate 300 moves toward the fixed plate 200 at the same time as the lowering.

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.

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

On the other hand, Figures 9 and 10 attached to the emergency braking apparatus for an elevator according to a second embodiment of the present invention.

That is, the second embodiment of the present invention further suggests that the movement assisting part 700 assisting the downward movement of the moving plate 300 is further included so that braking of the rope 3 can proceed more quickly.

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 assistance part 700 is configured to include a second connection link 710 and the elastic member (720).

One end of the second connection link 710 is rotatably coupled to the outer surface of the second side panel 120, and the other end thereof is connected to the first moving shaft 421.

In addition, one end of the elastic member 720 is connected to the second side panel 120, the other end is connected to the second connection link 710 when the restraint of the moving plate 300 is released The moving plate 300 is moved downward by rotating the two connection links 710.

At this time, the elastic member 720 suggests that the compression spring is installed on the relatively lower side than the position of the second connection link (710).

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 restraining part 500 is released, the movable plate 300 is accompanied by friction 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 720.

Therefore, a faster braking of the elevator is possible when an emergency situation of the elevator occurs.

On the other hand, in the series configuration according to the first embodiment and the second embodiment of the present invention described above, even when the power supply to the elevator device is stopped due to the power failure, the restraint release unit 600 of the emergency braking device is restricted ( 500 to release the restraint.

Accordingly, when the restraint of the movable plate 300 by the restraint part 500 is released, the movable plate 300 is lowered by a certain portion (to the extent that it is in contact with the rope) by its own weight, and in this state. If the power supply is again supplied to the elevator apparatus because the power failure is released, the moving plate 300 may be lowered while causing the problem of emergency braking of the rope 3.

Therefore, in the third embodiment of the present invention, when the power failure is released after the power failure of the elevator is performed, the lifting assembly 800 for moving the moving plate 300 upwardly to be restrained is further provided. It is presented.

The elevating assembly 800 is formed on the circumferential surface of the driving motor 810 and the first connection link 510 to provide a driving force, as shown in Figure 11 to 13 attached to the driving force of the driving motor 810 It is configured to include a gear unit 820 to receive and rotate, and a pinion 830 for transmitting the driving force of the drive motor 810 to the gear unit 820.

In this case, the gear unit 820 replaces the restraining jaw 520 shown in the first embodiment of the present invention, and the pinion 830 replaces the restraining protrusion 530 shown in the first embodiment of the present invention. Instead.

In other words, the gear unit 820 performs the role of the restraining jaw 520 as well as the pinion 830 is configured to perform the role of the restraining protrusion 530.

In addition, although the coupling between the drive motor 810 and the pinion 830 may be configured as a direct shaft coupling, the transmission of the power is made through a plurality of power transmission means (eg bevel gear, etc.) 840. Most desirable.

Hereinafter, an operation process during power failure of the emergency braking apparatus according to the third embodiment of the present invention will be described.

First, when the power supply to the elevator apparatus is stopped due to a power failure during the operation of the elevator 1, the power supply provided to the solenoid 610 of the restraining unit 600 is stopped.

As a result, the plunger 620 protrudes outward from the solenoid 610 to separate the pinion 830 from the gear unit 820.

As a result, the moving plate 300, which is lowered by the first connection link 510, is partially lowered by its own weight.

At this time, the moving plate 300 is further stopped at the time when the frictional force with the rope (3) when compared with the downward movement force due to its own weight (the point of contact with the rope) is stopped.

In the above process, the rope 3 does not flow (raise) due to the power failure of the elevator. Its state is as shown in FIG.

In addition, when the power supply is released again in the above state and the power is supplied to the elevator device again, the power supply is resumed by the solenoid 610 while pulling the plunger 620, which causes the pinion 830 to the gear unit 820. Is matched with. Its state is as shown in Figure 12 attached.

At the same time, the pinion 830 is rotated while the driving motor 810 is driven, whereby the portion connected to the first moving shaft 421 is gradually moved upward from the rotation center of the first connection link 510. do.

Therefore, as the movable plate 300 moves upward, the movable plate 300 is spaced apart from the rope 3, and in the state where the process is completed, the restraining unit 500 moves the first moving shaft 421. As a result, the moving plate 300 is maintained in an upwardly moved state. Its state is as shown in Figure 13 attached.

This makes it possible to carry out a continuous emergency braking operation.

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 an 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.

Fourth, the emergency braking device for an elevator according to the third embodiment of the present invention is further provided with a lifting assembly, so that when a power failure occurs, the moving plate moves upward when the power failure is released, thereby preventing malfunctions in a state other than emergency braking. It has the effect of doing it.

Claims (15)

A base frame having a first side panel and a second side panel along which the rope passes; A fixing plate installed between each side panel of the base frame; A movable plate configured to be movable between the side panels with the rope interposed therebetween and fixed to the fixed plate so as to brake the rope together with the fixed plate; A guide unit guiding the moving plate to move in the direction in which the fixed plate is positioned when the moving plate is moved downward while the lifting plate is moved; A restrainer selectively restraining the downward movement of the movable plate; And, An emergency braking device for an elevator, comprising: a restraining release part for releasing restraint of the moving plate by the restraining part during emergency braking. The method of claim 1, The guide portion Guide holes inclined toward the fixing plate toward the bottom of each side panel while being formed on each side panel, A part of the emergency braking device for an elevator, characterized in that it comprises a moving shaft which is coupled to the moving plate through each of the guide holes in the state exposed toward the outside of each side panel while being guided by the guide holes. . The method of claim 2, 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 of claim 1, The restraining part 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, Emergency braking device for an elevator characterized in that it comprises a restraining projection selectively caught on the restraining jaw. The method of claim 4, wherein 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 4, wherein The restraint release part is configured to selectively space the restraint projections from the restraint jaw. The method of claim 6, The restraining release part is configured to space the restraining protrusion in a direction perpendicular to the longitudinal direction of the first connection link. The method of claim 6, The restraining release part is configured to space the restraining protrusion in the longitudinal direction of the first connection link. The method of claim 6, The restraint release portion Solenoid fixed to the base frame, The emergency braking device for an elevator, characterized in that it comprises a plunger protruding to the outside of the solenoid in accordance with the flow of current to the solenoid while separating the restraining projection from the rotating part. The method of claim 1, 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 rotatably coupled to the outer surface of the second side panel, the other end and the second connecting link connected to the moving shaft, One end is connected to the side panel on which the second connection link is installed, and the other end is connected to the second connection link to operate the movable plate to move downward by rotating the second connection link when the restraint of the movable plate is released. Emergency braking device for an elevator, characterized in that it comprises a resilient member. The method according to any one of claims 1 to 10, The restricting portion is rotatably coupled to an outer surface of the first side panel, and the other end includes a first connection link connected to the moving shaft. The emergency braking device for an elevator, characterized in that the elevator assembly is further provided when the power is re-supplied after the power failure of the elevator is re-supplied to restrain the movable plate to move upward by rotating the first connection link. The method of claim 12, The lifting assembly A drive motor that provides a driving force, A gear part which is formed on a circumferential surface of the first connection link and is rotated by receiving a driving force of the driving motor; An emergency braking device for an elevator, characterized in that it comprises a pinion for transmitting the driving force of the drive motor to the gear unit. The method of claim 13, 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 according to any one of claims 1 to 10, 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.

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