KR101598693B1 - Safety device for locking door of platform - Google Patents

Abstract

The present invention relates to a safeguard apparatus for a platform which can be locked by a door, comprising: a support main body having a support provided at a predetermined interval; A door portion having at least one door installed to move up and down across the pillars; And a door opening / closing means having a hook portion provided with hooks provided at both side portions of the door, and a latch portion provided with a latch provided at the upper portion and the lower portion of the post. When the door is upwardly or downwardly moved, The latches are interlocked or disengaged through the solenoid to lock the door.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety device,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a screen door installed in a platform, and more particularly, to a platform safety device capable of locking a door so that a current state can be maintained even when a power source is shut off while a screen door is opened or closed.

Recently, in order to prevent various safety accidents that may occur when a passenger using a subway or a train is in the air or when boarding or getting off, a platform screen door (PSD, Hereinafter referred to as "screen door"). Such a screen door is a safety device for securing passengers' safety by installing a screen separated from the railway track on the platform and opening and closing the train in conjunction with the doors of the train when the train is stopped. These platform screen doors have a sealed type that completely blocks the floor and ceiling, and a railing type that does not completely block the ceiling.

Here, a conventional handrail-type screen door is disclosed in, for example, Korea Registration No. 0601112 (published on July 19, 2006, entitled Safety Device of Train Platform). As shown in FIG. 1, the screen door includes a rope lifting / lowering means 10 installed on both sides, a plurality of ropes 20 installed across the rope lifting / lowering means 10, a rope 20 And rope deflection preventing means 30 including a column disposed between the rope lifting means 10 to prevent deflection of the rope lifting means. The rope lifting and lowering means 10 includes a main body 11, a moving body 12 supported by the main body 11 and moving together with the rope 20, a motor C for controlling the movement of the moving body 12, And a tensioning means 14 for weight (weight) provided so as to assist the movement of the moving body 12. The tensioning means 14 is provided with a moving means 13 for moving the moving body 12,

Therefore, when the moving means 13 is operated to move the moving body 12 upward or downward, the rope 20 selectively restricts the user's entry and exit as it moves upward / downward. In detail, when the screen door is opened, the rope 20 and the moving body 12 are moved upward by the tension means 14, and when the screen door is closed, the rope 20 and the moving body 12 are pulled by the pulling means 14 And is moved downward by the external force of the motor C overcoming the weight.

However, since the weight of the tension means 14 is always provided to the moving body 12 connected to the rope 20 when the screen door is opened and closed, the motor C must always operate even during the stopping operation as well as the movement of the moving body 12. do. Therefore, when the motor C is cut off or a power failure occurs, the gravity of the tensioning means 14 causes the load on the rope (not shown) 20 and the mobile unit 12 may cause malfunctions and safety accidents.

Korean Registered Patent No. 0601112 (Announcement of 2006.07.019)

SUMMARY OF THE INVENTION It is an object of the present invention, which is developed to solve the above-described problems, to provide a door locking device and a door locking device, wherein when a door associated with the movable member moves up and down, A safety device for a platform can be provided.

In order to achieve the above-mentioned object, according to the present invention, there is provided a safeguard apparatus for a platform which can be locked with a door, wherein the safeguard apparatus includes a door that moves up and down, Housewives; A door portion having at least one door installed to move up and down across the pillars; And a door opening / closing means having a hook portion provided with hooks provided at both side portions of the door, and a latch portion provided with a latch provided at the upper portion and the lower portion of the post. When the door is upwardly or downwardly moved, And the latches are engaged with each other to fix the door.

Here, the latch portion is further provided with a solenoid installed to move the latch by electricity applied to engage or disengage the latch and the hook.

The bracket includes a third bracket mounted on the support and having a slot-shaped guide hole, a fixing member mounted on the solenoid while being fixed to the third bracket, one end fixed to the latch, and the other end inserted into the guide hole, And a second elastic member disposed between the fixing member and the latch so that an elastic force is generated in accordance with the movement of the latch to return the latch to its original position.

The hooking portion may further include at least one bracket mounted on the door, a fixing shaft fixed to the bracket at the front end so that the hook is axially rotated, and a first elastic member mounted so as to return to the home position with respect to the axial rotation of the hook And the hook portions are arranged symmetrically on the upper and lower portions of the door.

And a latching protrusion protruded toward the latch at the tip end of the hook, wherein when the door is moved and the slope of the hook comes into contact with the slope of the hook, the hook is rotated along the slope, The latching mechanism is engaged with the latch by the first elastic member, and the latch is moved so that the engagement between the latch and the latching projection is released.

In addition, the opening and closing means may include a second sheave provided at the upper and lower portions of the strut and driven by electricity, at least one of which is driven, a second conveying member disposed in an endless track around the second sheave, The second conveying member and the engaging member move while the door is moved upward or downward when the second sheave is driven.

The door includes a first door, a second door and a third door to which the coupling member is fixed, a first sheave provided on the upper portion / lower portion of the supporting side portion of the second door, and a first sheave Further comprising a first conveying member which is attached to the first door and the first door and a coupling member which is fixed to the first conveying member while being mounted on the first door and the third door, and when the first door is moved up / down by the second conveying member and the coupling member, The first door, the second door, and the third door are overlapped with each other in the unfolded state after being lifted up by the first transfer member and the first sheave fixed to each other, .

The door portion includes at least two auxiliary pulleys provided on the opposite side of the supporting side on which the first pulley is installed, an auxiliary conveying member arranged so as to form an endless track while wrapping the auxiliary pulley, and a second conveyor mounted on the third door to be firmly fixed to the auxiliary conveying member And an auxiliary coupling member provided on the base.

The pillar includes a first door, a first door, a first door, and a third door on opposite sides of the first door and the second door, respectively. The first, second, and third guide rails The first stop brackets are provided to the first door, the second door, and the third door so that the first door, the second door, and the third door move downward and stop at a predetermined height, And the second stop brackets mounted on the second stop brackets, respectively.

 The opening / closing means may further comprise an emergency button provided to apply electricity to the solenoid.

The door includes a door frame of a predetermined size and at least one blocking member having both ends fixed to the door frame while being disposed in a direction transverse to the supporting pillars and a guide frame fixed to both sides of the supporting frame of the door frame, .

Further, a transverse frame installed across an upper portion of the struts, and a transverse frame portion having a power source installed in the transverse frame to supply power to the solenoid or to supply power to the second sheave to induce movement of the latch .

A method of controlling a safety device for a platform according to the present invention is a method for controlling a safety device for a platform by using a solenoid for moving the latch of the latch or a power source for moving the at least one door (Step S10); An eleventh step (S11) in which the latch of the latch attached to at least one door is moved by the solenoid and released from engagement with the hook of the hook held at the lower part of the post; A twelfth step (S12) in which the second conveying member is moved by rotating the second sheave; A thirteenth step (S13) in which one door is raised together with the second conveying member, the first conveying member is moved together with the door, and the other door is elevated together with the first conveying member; (S14) the doors are stacked and elevated while the first conveying member is stopped; A fifteenth step (S15) in which the hooks of the hook portions mounted on the upper portion of the strut are engaged with the hooks of the hook portions mounted on any one of the doors; (S16) of stopping the second and the second conveying members and stopping the doors to overlap with each other, and a seventeenth step (S17) of shutting off the power supplied to the second sheave .

In the eleventh step S11 to step S16, the door has the first door, the second door, and the third door, the first door is raised together with the second conveying member, The first conveying member rises together with the first conveying member, the second door is raised together with the first conveying member, and the first door, the second door and the third door are overlapped with each other and then stopped.

20) (S20) of applying power to the solenoid to move the latch of the latch or the second sheave to move the at least one door to close the safety device; A twenty-first step (S21) in which the latch of the latch attached to at least one door is moved by the solenoid and released from engagement with the hook of the hook held at the top of the post; A twenty-second step (S22) in which the second conveying member is moved by rotation of the second sheave; A twenty-third step (S23) of lowering the doors with the second conveying member in a stacked state; A twenty-fourth step (S24) of moving the first conveying member when any one of the doors is stopped at a predetermined height and the other door is continuously lowered; A twenty-fifth step (S25) in which the latch provided on the lowered door is engaged with the hook provided on the lower portion of the post; A twenty-sixth step (S26) in which the movement of the second pulley and the first pulley is stopped and the downward movement is stopped with the doors opened; And a 27th step (27) in which the power supplied to the second sheave is cut off.

In the twenty-fourth step (S24) to step S26, a second stop bracket mounted on each door and at least one guide rail fixed to at least one guide rail mounted on the support to guide the movement of each door 1 stop brackets are mutually brought into contact with each other so that the doors are sequentially opened and stopped.

Further, the auxiliary sheave is rotated together with the second sheave, whereby the second conveying member moves one of the doors, and the auxiliary conveying member moves any one of the doors.

As described above, according to the present invention, since the hooks mounted on the supporting posts compatible with each other and the hooks mounted on the door moving upward and downward between the supports are selectively engaged, the power of the power source There is an effect that the locked state is maintained by the engagement of the latch portion and the hook portion.

Further, there is an effect that the door can be kept opened and closed by a simple structure in which the latch of the latch is moved by the solenoid and is engaged or disengaged with the hook of the hook.

In addition, the second stop bracket fixed to each door and the first stop bracket fixed to each guide rail of the support selectively contact each other, whereby the door is fixed and unfolded at a certain height, and the door is prevented from being lowered arbitrarily.

When the first door is moved by the power source, the first door and the first door are fixed to the first door and the third door, And the third door are interlocked and overlapped and moved.

In addition, since the first door and the third door are moved by mounting the first conveying member and the auxiliary conveying member on both side surfaces of the support, the stable movement can be assured.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate preferred embodiments of the invention and, together with the description, serve to further the understanding of the technical idea of the invention, It should not be interpreted.
1 is a perspective view schematically showing a conventional platform safety device.
Fig. 2 is a front view schematically showing a closed state of a safety device for a platform in which a door can be locked according to the present invention; Fig.
FIG. 3 is a perspective view showing an enlarged view of the joint between the door and the support in FIG. 2. FIG.
FIG. 4A is a perspective view showing an enlarged view of a latch mounted on the lower part of the support part in FIG. 2. FIG.
4B is a front view of Fig.
FIG. 4C is a perspective view showing an enlarged view of the latch shown at the top of the support in FIG. 2. FIG.
5 is a perspective view schematically showing the open state of the safety device shown in Fig.
FIG. 6A is a perspective view showing an enlarged view of the joint between the door and the support in FIG. 5. FIG.
Fig. 6B is a sectional view showing the side of Fig. 6A.
Fig. 6C is a front view showing the opposite side surface of the latch portion at the support portion shown in Fig. 6B. Fig.
Figs. 7A and 7B are block diagrams schematically showing a control method for the opening and closing operation of the safety device shown in Figs. 2 and 6. Fig.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the detailed description of known functions and configurations incorporated herein will be omitted when it may unnecessarily obscure the subject matter of the present invention.

<Configuration>

1 is a perspective view schematically showing a conventional platform safety device. Fig. 2 is a front view schematically showing a closed state of a safety device for a platform in which a door can be locked according to the present invention; Fig. FIG. 3 is a perspective view showing an enlarged view of the joint between the door and the support in FIG. 2. FIG. FIG. 4A is a perspective view showing an enlarged view of a latch mounted on the lower part of the support part in FIG. 2. FIG. 4B is a front view of Fig. FIG. 4C is a perspective view showing an enlarged view of the latch shown at the top of the support in FIG. 2. FIG. 5 is a perspective view schematically showing the open state of the safety device shown in Fig. FIG. 6A is a perspective view showing an enlarged view of the joint between the door and the support in FIG. 5. FIG. Fig. 6B is a sectional view showing the side of Fig. 6A. Fig. 6C is a front view showing the opposite side surface of the latch portion at the support portion shown in Fig. 6B. Fig.

As shown in FIGS. 2 and 3, the safety device for a platform according to the present invention includes a support 100 including a pair of supports 110, a transverse frame 110 installed across the support 110, A door part 300 having at least one door, and opening / closing means 400 for moving / fixing the door.

As shown in Figs. 2, 3 and 5, the support portion 100 is provided with a support 110 installed at a predetermined interval and a guide provided on a surface facing the support 110, And a rail (120).

Here, the transverse frame part 200 is fixed to the support part 100 across the upper part of the support pillars 110, and the door part 300 is installed so as to move up and down across the support pillars 110. The pillars 110 include, for example, an "H" bar on which the transverse frame part 200 and the door part 300 are installed, and a fixing body provided on the lower part of the "H" bar for fixing the "H" can do. Of course, the pillars 110 may be provided directly on the floor, on which the transverse frame part 200 and the door part 300 can be installed. The support 110 may be provided with an outer case (not shown) for protecting the opening and closing means 400 and the guide rails 120 provided on the support 110 from the outside and for enhancing the appearance.

3 and 5, the guide rail 120 is a member for guiding the door movement of the door unit 300. The guide rail 120 includes first guide rails 121, 2 guide rails 122 and a third guide rail 123 are provided. Of course, the guide rails 120 are provided according to the number of doors. That is, if one door is provided, the number of the guide rails 120 and the number of the guide rails 120 are three, and in the embodiment of the present invention, three doors and three guide rails 120 are provided As a basis.

The lower end of the first guide rail 121 is positioned lower than the lower end of the second guide rail 122 and the lower end of the second guide rail 122 is positioned on the third guide rail 123). &Lt; / RTI &gt; That is, the first guide rail 121 is the longest, the second guide rail 122 is the longest, and the third guide rail 123 is the shortest. 5, when the first guide rails 121, the second guide rails 122, and the third guide rails 123 are positioned at the same positions on the upper side of the transverse frame portion 200 side, The second guide rail 122 is long, and the third guide rail 123 is the shortest. The difference in length is related to the door of the door part 300, and the door part 300 will be described in detail.

A first stop bracket (not shown) protruding outward is provided near the lower ends of the first guide rails 121, the second guide rails 122, and the third guide rails 123. A second stopping bracket (not shown) protruding outwardly from the first door 310, the second door 320, and the guide frame 340 of the third door 330 is mounted on the first stopping bracket. Accordingly, when the third door 330, the second door 320, and the first door 310 move downward when the door is closed, the third door 330 is first moved to the first stopping bracket first, And then the second door 320 is fixed at the corresponding position by the contact of the first stopping bracket and the second stopping bracket. Finally, the first door 310 is fixed to the first door 310 by the contact with the stopping bracket, Is fixed at the corresponding position by the same operation. That is, the first door 310, the second door 320, and the third door 330 are prevented from moving downward by their own weight due to the contact between the first detent bracket and the second detent bracket.

As shown in FIGS. 2, 5 and 6B, the transverse frame unit 200 includes a transverse frame 210 installed across the upper portion of the struts 110, and a transverse frame 210 installed inside the transverse frame 210, And a power source 220 connected to operate the second pulley 430 of the means 400. The transverse frame 210 is a member for protecting the members for electrical connection between the power source 220 and the second sheave 430 and the electric connection between the power source 220 and the external power source.

The door unit 300 includes a door, a guide frame 340, a first pulley 350 and a first conveying member 360, as shown in FIGS. 2, 3, 6A and 6B. Here, it is assumed that at least one door is provided and three doors including the first door 310, the second door 320 and the third door 330 are constructed as described above.

2 and 3, the first door 310, the second door 320, and the third door 330 are connected to each other by the opening and closing means 400 So as to move up and down. Each of the first door 310, the second door 320 and the third door 330 includes a door frame 311 for defining a predetermined area and a door frame 311 for crossing the pillars 110, And a blocking member 312 to which opposite ends are fixed on opposite sides. Here, the blocking member 312 fixes a normal wire, rope, or the like in a tight state.

3 and 6B, the guide frame 340 smoothly contacts between the guide rail 120 attached to the support 110 and the door frame 311, and the hooks (not shown) of the opening / 410 and is coupled to both side portions of the door frame 311 on the support 110 side. Of course, the guide frame 340 may be omitted if necessary. The engagement of the guide frame 340 and the hook portion 410 will be described in detail in the description of the hook portion 410 which will be described later. A coupling body 370 fixed to the first conveying member 360 described later is fixed to the upper portion of the guide frame 340 of the first door 310 and the lower portion of the guide frame 340 of the third door 330 , And a detailed description will be given while describing the first conveying member 360. [

3 and 6B, the first pulley 350 is fixed to the guide frame 340 of the second door 320 by a pair of upper and lower pairs. The first conveying member 360 is mounted on the pair of first sheaves 350 so as to form an infinite orbit. At this time, the first conveying member 360 is, for example, a belt in the form of a closed curve, and operates so as to form an infinite orbit by arranging the pair of first sheaves 350 on both sides of the belt.

As shown in FIG. 6B, the joining body 370 mounted on the first door 310 and the guide frame 340 of the third door 330 are firmly fixed to the opposite sides of the first conveying member 360, . Accordingly, when the first transfer member 360 moves in one direction, the coupling body 370 of the first door 310 and the coupling body 370 of the third door 330 move in opposite directions. 6B, when the first door 310, the second door 320 and the third door 330 are overlapped with each other, the coupling body 370 of the first door 310 is coupled to the first door 310, And the coupling body 370 of the third door 330 is positioned below the first conveying member 360. In this case, 3, when the first door 310, the second door 320 and the third door 330 are unfolded in the closed state, the coupling body 370 of the first door 310 is coupled to the first conveying member 360 and the coupling body 370 of the third door 330 is positioned on the upper portion of the first conveying member 360. On the other hand, the first conveying member 360 may form a continuous groove having a cross-sectional shape of "V" character or waveform on one or both surfaces for the purpose of improving gripping force with the first pulley 350 or the coupling body 370 .

The first conveying member 360 and the first pulley 350 may be installed on the first door 310 when the second door 320 and the third door 330 overlap each other when opened, 310 and the second door 320 in cooperation with each other. In detail, when the first door 310 is elevated when the door is opened, the second door 320 is moved upward together with the movement of the first conveying member 360. When the third door 330 is closed when the first door 310 is closed, The first door 310 is also moved away from the overlapping with the second door 320 and moved down with the movement of the first conveying member 360.

The opening and closing means 400 includes a hook 410, a latch 420, a second pulley 430, a second conveying member 440, an auxiliary pulley 450, A conveying member 460, an auxiliary coupling member 470 and an emergency button (not shown).

2 to 4B, the hooking portion 410 is installed at the upper portion and the lower portion of the guide frame 340 of the first door 310, respectively. Of course, only one can be installed. The hooking part 410 includes a second bracket 411 fixed to the guide frame 340 so as to protrude outwardly on one side of the guide frame 340 and a coupling member 460 fastened to the second bracket 411 to be fixedly secured to the second conveying member 440. [ A first bracket 413 fixed to the first bracket 413 and fixed to the second bracket 411 so as to protrude outwardly, a fixed shaft 414 having one end fixed to the first bracket 413, And a first elastic member 416 provided on the fixed shaft 414 in cooperation with the hook 415 so that the hook 415 is rotated and returned after the shaft is rotated. The first elastic member 416 may be installed such that one end of the first elastic member 416 is fixed to the first bracket 413 or the second bracket 411 and the other end of the first elastic member 416 is fixed to the hook 415.

Here, a locking protrusion 415a protruding toward the latch 424 side and inclined at one side is formed at the tip end portion of the hook 415. [ The engaging member 412 is fixed on a part of the second conveying member 440 and is a medium for moving the hooking portion 410 and the first door 310 together with the movement of the second conveying member 440 . When the hooking portions 410 are provided as a pair, the hooking holes 415 are arranged symmetrically with respect to each other.

The hooking portion 410 provided on the upper portion of the guide frame 340 of the first door 310 is symmetrically arranged with the hooking portion 410 provided at the lower portion and is engaged with the hook 424, Thereby preventing the first door 310 from falling or rising.

Next, the latch portion 420 is installed at the lower portion and the upper portion of the strut 110, respectively, as shown in Figs. 2 to 4B. Of course, only one latch portion 420 may be provided. The latch portion 420 includes a third bracket 421 fixed to one side of the support 110, a fixing member 422 fixed to the third bracket 421, a solenoid 423 mounted on the fixing member 422, And a second elastic member 424 installed between the fixing member 422 and the latch 424 so as to move back by the solenoid 423 and return to the original position relative to the movement of the latch 424, A guide pin 426 mounted on the latch 424 so as to protrude toward the side of the third bracket 421 and a guide pin 426 fitted to the tip of the guide pin 426 to ensure a stable reciprocating movement of the latch 424. [ And a guide hole 421a formed in the third bracket 421 so that the distal end of the second bracket 426 is fitted.

The solenoid 423 is electrically connected to a power source 220 or a separate power source built in the transverse frame 210. When electricity is applied to the solenoid 423, When the solenoid 423 is cut off, the second elastic member 425 advances the latch 424 to the opposite side of the solenoid 423. This allows the clasp 424 and the hook 415 to be fastened or unfastened. At this time, the clasp 424 is always kept constant in its moving range and moving angle in accordance with the guide of the guide pin 426 and the guide hole 421a. Here, the latch 424 may be retracted and moved forward only by the solenoid 423 while the second elastic member 425 is excluded.

The latching part 420 provided on the upper part of the guide frame 340 of the first door 310 is arranged symmetrically with the latching part 420 provided at the lower part.

2, the second pulley 430 is installed at the upper and lower portions of the strut 110 and is electrically connected to the power source 220 built in the transverse frame 210 and operates. The second conveying member 440 is installed on the second pulley 430 so as to form an endless track.

The second conveying member 440 is the same as or similar to the first conveying member 360. Here, the second conveying member 440, the first conveying member 360, and the auxiliary conveying member 460 may be installed so as to move in one direction or both directions without forming an endless track. For this purpose, 350, the second pulley 430 and the auxiliary pulley 450 may be omitted.

Accordingly, the second sheave 430 rotates clockwise or counterclockwise by the power source 220 to move the second conveying member 440 in the same direction. At this time, the hooking part 410 and the first door 310 are moved by the engaging member 412 firmly mounted on the second conveying member 440.

6B and 6C, the auxiliary pulley 450 is installed on the opposite side of the support 110 on which the second pulley 430 is installed and is electrically connected to the power source 220 . An auxiliary conveying member 460 is installed on the auxiliary pulley 450 so as to form an endless track.

The auxiliary conveying member 460 is the same as or similar to the second conveying member 440, and is only slightly reduced in size. At least one auxiliary coupling member 470 is installed in the guide frame 340 of the third door 330 so that the third door 330 can move according to the movement of the auxiliary transfer member 460, The member 470 is firmly mounted to the auxiliary transfer member 460.

Accordingly, the auxiliary pulley 450 rotates clockwise or counterclockwise simultaneously with the second pulley 430 by the power source 220 to move the auxiliary conveying member 460 in the same direction. At this time, the third door 330 is moved by the auxiliary coupling member 470 firmly mounted on the auxiliary conveying member 460. The upward / downward movement range of the third door 330 by the auxiliary pulley 450 and the auxiliary transfer member 460 is set to the latch portion 420 and the support 110 of the first door 310 when the third door 330 is opened. The second detent bracket mounted on the third door 330 and the second detent bracket mounted on the third guide rail 123 are brought into contact with each other at a position where the hooked portion 410 of the third door 330 is engaged, To the position where the downward movement stops.

The emergency button is a member for releasing the engagement between the latch portion 420 and the hook portion 410 in an emergency and is mounted on the outer surface of the outer case mounted on the support 110. The emergency button is connected to the solenoid 423 by a power source 220, Or to supply power to the external emergency power source 220. Accordingly, the emergency button retracts the latch 424 by the solenoid 423 to release the engagement between the latch 424 and the hook 415, so that the door can be opened by an external force, for example, It is for this reason. Also, when the emergency button is pressed once, electricity is continuously applied to the solenoid 423 so that the disengagement of the latch 424 and the hook 415 is continuously maintained.

<Open operation>

Figs. 7A and 7B are block diagrams schematically showing a control method for the opening and closing operation of the safety device shown in Figs. 2 and 6. Fig.

7A, the operation in which the safety device according to the present invention is opened in a closed state will be described.

First, power is applied (S10). The power source 220 incorporated in the transverse frame 210 is operated to sequentially supply power to the solenoid 423 and the second sheave 430 of the latch portion 420. At this time, the solenoid 423 and the second sheave 430 are operated at predetermined intervals. The power supply time is different or the power is supplied at the same time. However, when the solenoid 423 is operated to release the engagement between the latch part 420 and the hook part 410, You may.

Next, the engagement between the lower hook portion 410 and the lower latch portion 420 is released (S11). When the electric power is applied to the solenoid 423 of the latch part 420 from the power source 220 in a state where the latch 424 and the hook 415 are engaged with each other at the lower part of the pillar 110, 423 so that the engagement between the latch 424 and the hook 415 is released.

Next, the second conveyance member 440 moves while the second sheave 430 rotates (S12). After the power source 220 operates the solenoid 423, one or two second sheaves 430 are rotated to move the second conveying member 440. 2, when the second sheave 430 rotates counterclockwise by the power source 220, the second conveying member 440, which forms the endless track, also moves in the counterclockwise direction.

Next, the first door 310 is lifted, the first conveyance member 360 is moved, and the first pulley 350 is rotated, and the second door 320 is raised (S13). The elevation of the first door 310 is fixed to the second conveyance member 440 and the first door 310 is moved to the second position by the engaging member 412 mounted on the guide frame 340 of the first door 310, Along with the conveying member 440 and along the first guide rail 121. When the first door 310 rises, the electricity applied to the solenoid 423 is cut off and the latch 424 returns to the original position by the second elastic member 425.

When the coupling member 370 fixed to the first conveying member 360 is moved upward due to the upward movement of the first door 310 while being mounted on the guide frame 340 of the first door 310, 370 move the first conveying member 360 and the first conveying member 360 moves the first sheave 350 to rotate. 3, when the first door 310 rises along the first guide rail 121, the first conveying member 360, which forms an endless track by the coupling body 370 of the first door 310, And the first conveying member 360 also rotates the first sheave 350 in the counterclockwise direction.

The coupling body 370 mounted on the guide frame 340 of the third door 330 is fixed to the first transferring member 360. When the first transferring member 360 is moved, The second door 320 relatively moves relative to the first door 320 and the second door 320. 3, when the first conveying member 360 moves counterclockwise due to the elevation of the first door 310, the coupling body 370 of the third door 330 is in a fixed state, 2 door 320 is raised.

Next, the first door 310, the second door 320, and the third door 330 are overlapped with each other, so that the first conveying member 360 and the first sheave 350 are stopped (S14) . While the first door 310 is lifted by the second pulley 430, the second conveying member 440 and the coupling body 370, the first door 310, the second door 320, and the third door 330 rise in a superimposed state. 6B, when the first door 310, the second door 320 and the third door 330 are overlapped with each other, the coupling bodies 370 fixed to the first conveying member 360 are coupled to the first sheave The movement of the first conveying member 360 and the rotation of the first sheave 350 are stopped. The first door 310, the second door 320 and the third door 330 are connected to the first guide rail 121, the second guide rail 122 and the third guide rail 123 To the upper portion of the support 110.

Next, the upper hook portion 410 and the upper latch portion 420 are engaged (S15). When the first door 310, the second door 320 and the third door 330 reach the open position, the inclined surfaces of the engagement protrusions 415a formed on the hook 415 and the engagement surfaces of the latch 424 The hook 415 is returned to its original position due to the elastic force of the first elastic member 416 and engaged with the catch 424 as shown in FIG. 6A after the hook 415 is rotated .

Next, the rotation of the second sheave 430 and the movement of the second conveying member 440 are stopped, and the movement of the first door 310, the second door 320, and the third door 330 is also stopped (S16). The state at this time is shown in Figs. 6A and 6B.

Finally, the power supplied to the second pulley 430 is cut off (S17). Even if the second sheave 430 is not operated due to the power cut off, the first door 310, the second door 320, and the third door 420 are coupled by the engagement of the upper hook portion 410 and the upper latch portion 420, Lt; RTI ID = 0.0 &gt; 330 &lt; / RTI &gt; remain fixed in the open position, and of course they are in a nested state.

<Closed operation>

Hereinafter, the operation in which the safety device according to the present invention is closed in the open state will be described with reference to FIG. Hereinafter, the closing operation is the same as or similar to the opening operation, so that a detailed description of the similar operation will be referred to as the opening operation and will be briefly described herein. However, since there is a clear difference in the operation of the door, this portion will be described in detail.

First, power is applied (S20). Power is supplied to the solenoid 423 and the second sheave 430 so that the solenoid 423 and the second sheave 430 operate at predetermined intervals.

Next, the engagement between the upper hook portion 410 and the upper latch portion 420 is released (S21). When electricity is applied to the solenoid 423 in a state where the latch 424 and the hook 415 are engaged with each other at the upper part of the support 110, the latch 424 is retracted to engage the latch 424 with the hook 415 Is released.

Next, the second conveying member 440 moves while the second sheave 430 rotates (S22). That is, when power is supplied to the second pulley 430 to rotate clockwise, the second conveying member 440, which forms the endless track, also moves clockwise.

Next, the first door 310, the second door 320, and the third door 330 are lowered in the overlapped state (S23). Of course, the first door 310, the second door 320, and the third door 330 may be lowered along the first guide rail 121, the second guide rail 122, and the third guide rail 123, do.

When the third door 330 is stopped at a predetermined height and the first door 310 and the second door 320 are continuously lowered, the first conveying member 360 moves while moving the first pulley 350, (S24). At this time, when the second detent bracket mounted on the guide frame 340 of the third door 330 comes into contact with the first detent bracket mounted on the third guide rail 123, the third door 330 stops . The position of the coupling body 370 coupled to the first transfer member 360 is fixed while being mounted on the third door 330. When the second door 320 is continuously lowered in this state, The first conveying member 360 is moved in the clockwise direction and the first pulley 350 is also rotated in the clockwise direction. The coupling member 370 coupled to the first conveying member 360 is moved downward by the clockwise movement of the first conveying member 360 while the first door 310 is mounted on the first door 310, . Accordingly, when the third door 330 stops, the second door 320 descends with respect to the third door 330, the first door 310 descends with respect to the second door 320, The operation is performed by a pair of coupling members 370, a first conveying member 360 and a first pulley 350.

Next, the lower hook portion 410 and the lower hook portion 420 are engaged (S25). When the inclined surface of the latching protrusion 415a formed on the hook 415 and the inclined surface of the latch 424 are in contact with and slid while the first door 310 is moved downward, the hooking protrusion 415 is rotated, The hook 415 is returned to its original position by the elastic force of the member 416 and engaged with the catch 424 as shown in Fig.

Next, the rotation of the second sheave 430 and the movement of the second conveying member 440 are stopped, the rotation of the first sheave 350 and the movement of the first conveying member 360 are stopped, The movement of the first door 310, the second door 320 and the third door 330 is also stopped (S26). The state at this time is the same as in Fig. Here, the second detent bracket mounted on the guide frame 340 of the second door 320 comes into contact with the first detent bracket mounted on the second guide rail 122, so that the excessive descent of the second door 320 Is limited. The second detent bracket mounted on the guide frame 340 of the first door 310 is brought into contact with the first detent bracket mounted on the first guide rail 121 so that the excessive falling of the first door 310 Is limited.

Finally, the power supplied to the second pulley 430 is cut off (S27). Even if the power source of the power source 220 is cut off and the second sheave 430 is not operated, the lower hook portion 410 and the lower hook portion 420 are engaged and the first and second stop brackets are brought into contact with each other The first door 310, the second door 320 and the third door 330 are kept in a fixed state, and these doors 310, 320, and 330 are, of course, unfolded.

<Emergency mode>

When the emergency button is pressed, the power source 220 or an external power source is supplied to the solenoid 423 of the latch portion 420 so that the latch 424 is retracted and the latch 424 The engagement of the hook 415 is released. Thereafter, the user lifts the first door 310 and moves the second door 320 and the third door 330 upward together. Also, even if the emergency button is pressed once, power is continuously supplied to the solenoid 423 so that the engagement of the latch 424 and the hook 415 is continuously maintained.

As described above, those skilled in the art will appreciate that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. It is therefore to be understood that the above-described embodiments are to be considered in all respects as illustrative and not restrictive. The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included within the scope of the present invention.

100: housewife 110: holding
120: guide rail 121: first guide rail
122: second guide rail 123: third guide rail
200: transverse frame part 210: transverse frame
220: power source 300: door part
310: first door 311: door frame
312: blocking member 320: second door
330: Third door 340: Guide frame
350: first pulley 360: first conveying member
370: Assembly 400: opening / closing means
410: hook portion 411: second bracket
412: coupling member 413: first bracket
414: fixed shaft 415:
415a: a locking protrusion 416: a first elastic member
420: latch portion 421: third bracket
422: Fixing member 423: Solenoid
424: Clasp 425: Second elastic member
426: guide pin 430: second pulley
440: second conveying member 450: auxiliary pulley
460: auxiliary conveying member 470. auxiliary coupling member.

Claims (17)

A safeguard device for a platform provided with a door part (300) which moves up and down,
A support (100) having pillars (110) installed at equal intervals;
A door part (300) having at least one door installed to move up and down across the pillars (110);
A hook portion 410 having hooks 415 provided at both side portions of the door and a latch portion 420 provided at the upper and lower portions of the leg 110; A second conveyor member 440 disposed at an upper portion and a lower portion of the first conveyor 440 and driven by electricity, at least one second conveyor member 440 wrapped around the second sheath 430 and disposed in an endless track, (400) having an engaging member (412) fixed to the second conveying member (440) while being mounted on the second conveying member (410)
Wherein when the door is moved upward or downward, the hooks (415) and the latches (424) are engaged with each other to fix the door. The method according to claim 1,
The latch 420 may further include a solenoid 423 installed to move the latch 424 by electricity applied to engage or disengage the latch 424 and the hook 415. [ Lockable platform safety device.
3. The method of claim 2,
The latch portion 420 includes a third bracket 421 having a slot-shaped guide hole 421a mounted on the pillar 110, a fixing bracket 421 fixed to the third bracket 421 and having a solenoid 423 mounted thereon, A guide pin 426 having one end fixed to the latch 424 and the other end inserted into the guide hole 421a to guide the reciprocal movement of the latch 424, Further comprising a second elastic member (425) disposed between the fixing member (422) and the latch (424) so as to generate an elastic force according to the elasticity of the latch Safety devices.
The method according to claim 1,
The hooking portion 410 includes at least one bracket mounted on the door, a fixed shaft 414 mounted on the distal end portion of the hook 415 so as to pivot about the axis of the hook 415, Further comprising a first elastic member (416) provided on the fixed shaft so as to return to the home position,
Wherein the hooking portion (410) is arranged symmetrically on the upper and lower portions of the door, and is engaged with the latch (424) to prevent the door from descending or rising. 5. The method of claim 4,
And a locking protrusion 415a protruding toward the latch 424 at the distal end of the hook 415. The locking protrusion 415a protrudes toward the latch 424,
When the door is moved and the inclined surface of the hook 425 contacts the inclined surface of the hook 415, the hook 415 is rotated along the inclined surface, and then the first elastic member 416 restores the hook And the latching protrusion 415a is engaged with the latch 424 and the latch 424 is moved to release the latching engagement between the latch 424 and the latching protrusion 415a. .
delete The method according to claim 1,
The door part 300 includes a first door 310, a second door 320 and a third door 330 to which a coupling member 412 is fixed, A first conveyor member 360 disposed to cover the first sheave 350 and forming an endless track while the first sheave member 350 and the third sheave member 330 And a coupling member 370 fixed to the first conveying member 360,
When the first door 310 is moved upward or downward by the second conveying member 440 and the engaging member 412, the first conveying member 360 and the first conveying member 360, Wherein the first door (310), the second door (320), and the third door (330) are overlapped with each other in an unfolded state, This possible platform safety device. 8. The method of claim 7,
The door unit 300 includes at least two auxiliary pulleys 450 installed on one side of the support 110 on which the first pulley 350 is installed and an auxiliary pulley 450 disposed on an opposite side of the auxiliary pulley 450, Further comprising an auxiliary transfer member (460) and an auxiliary coupling member (470) mounted on the third door (330) so as to be firmly fixed to the auxiliary transfer member (460) Device.
8. The method of claim 7,
The support 110 includes first, second, and third guide rails 120 and 120 installed to move on opposite sides of the first door 310, the second door 320, and the third door 330, And first stop brackets provided on the first, second and third guide rails 120,
The first door 310 and the second door 330 are moved downward to stop at a predetermined height while the first door 310 and the second door 330 are opened, And the second stop brackets are mounted on the door (320) and the third door (330), respectively.
3. The method of claim 2,
Wherein the opening / closing means (400) further comprises an emergency button provided to apply electricity to the solenoid (423). The method according to claim 1,
The door includes a door frame 311 having a predetermined size, at least one blocking member 312 having both ends thereof fixed to the door frame 311 while being disposed in a direction transverse to the support 110, And a guide frame (340) mounted on both sides of the pillar (110) side of the pillar (410) and to which the pillar (410) is fixed.
3. The method of claim 2,
A transverse frame 210 installed across the upper part of the pillars 110 and a power supply unit 220 installed in the transverse frame 210 to supply power to the solenoid 423 to induce the movement of the latch 424, And a transverse frame part (200) having a power source (220) installed to supply power to the first and second pulleys (430, 430). delete delete delete delete delete

Images