KR101831590B1 - Safety door closing and opening device of a construction Lift - Google Patents

Abstract

The present invention relates to an apparatus for opening and closing a safety door of a construction lift unit. The apparatus for opening and closing a safety door includes: a guide which is coupled to an opening and closing unit in a sliding manner; fixing bolts which fix the opening and closing coupling shaft and the guide while being coupled to the guide; a fixing plate which is fixed to a surface of the guide; a rotary plate which is coupled to the fixing plate with a hinge shaft to rotate in a horizontal direction; a case which is fixed to the fixing plate to limit the rotation of the rotary plate on the fixing plate within a range of 90 degrees; a recovery spring which has an end coupled to the rotary plate and the other end coupled to the case to pull the rotary plate to the case to elastically support a surface of the rotary plate of the corresponding surface; a solenoid unit which is installed in the case and operates the driving shaft when receiving a supply of powder to press and rotate the rotary plate to the fixing plate; and the first and second magnet units which are individually installed to the fixing and rotary plates to elastically push off the rotary plate when the rotary plate rotates against the fixing plate. The safety door opening and closing unit is coupled to a safety door frame without puncturing the safety door frame or welding the safety door opening and closing unit and the safety door frame. The guide of the safety door opening and closing unit is detachably coupled to the safety door frame to simplify the installation and replacement of the safety door opening and closing unit with the simple operation of tightening or releasing the fixing bolts.

Description

Technical Field [0001] The present invention relates to a safety door closing and opening device for a construction lift,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety gate opening / closing apparatus for a construction lift, and more particularly, to a security gate opening / closing unit for a safety gate, And more particularly, to a safety gate opening / closing device for a construction lift in which the number of parts of safety gate opening and closing parts is reduced.

Generally, the lift for construction is expanded and installed according to the increase of the building at the construction site, and it is transported up and down by the floor of the high-rise building to transport the person or construction material. At each floor of the building safety gates are installed to prevent the risk of falling when the operator or the construction material moves from the lift to the building side.

The safety device is installed to open and close horizontally on the safety door frame, and is installed so that the safety device is rotated inside the building when it is pushed to the inside of the building from the construction lift.

These safety inspections are installed on safety door frames. The upper vertical surface of the safety door supports the upper inside of the safety door and supports the safety door so that it can not be opened to the building side. On the upper horizontal surface of the safety door, Is supported.

The safety door opening and closing unit includes a coupling piece for being attached to and detached from the installation bar provided at the upper end of the safety door frame, a fixing screw for fixing the coupling piece to the installation bar, a housing fixed to the upper end of the coupling piece, a rotary shaft rotatably coupled to the housing, And a weight attached to the other end of the rotary shaft and supporting the horizontal surface of the safety door so that the horizontal surface of the safety door does not protrude upward.

When the lift is raised and the operation bar is fixed, the safety gate is released from the horizontal position of the safety door while being rotated together with the additional weight rotation shaft. In this state, if the operator pushes the safety goggles into the inside of the building, the safety goggle is turned upside down and the safety goggle is opened. When the opened safety gate is closed, the safety gate is returned to its original state by the weight of the removed safety gate and the weight added, and the safety gate is locked.

However, due to the structure of the safety gate opening / closing part, the safety gate opening / closing device having such a structure must have a relatively large space between the lift and the safety gate.

That is, the skid bar installed on the lift is installed so as to protrude from the outer surface of the lift by about 80 to 100 mm so as to remove the operation bar of the safety gate opening / closing part, and the safety gate opening / closing part is provided in a state protruding about 100 mm toward the gate. Therefore, the lift is installed so as to be elevated at a sufficient distance from the building.

In order to cover a large space between the building and the lift, an auxiliary footrest is installed at the bottom of the lift. Therefore, when the lift stops at the floor, the leveling platform that is vertically erected is lowered horizontally so that the elevating platform is extended inside the safety window.

Every time the lift stops and moves on the floor, the work of unfolding and folding the auxiliary footrests becomes complicated to the workers. As a result, the worker often goes from the lift to the building beyond the auxiliary footrests without spreading the footrests. In case of carelessness, the worker may fall over the footrests or fall into a large space between the lift and the building.

As described above, due to the structure of the door opening and closing part, there is a risk that the building material or the operator may fall down not only in the lower space but also in both the spaces as the gap between the building and the lift is increased.

Also, in the safety gate opening / closing device of the conventional construction lift, the maintenance problem is most generated in the opening portion of the safety gate. That is, the conventional safety switchgear has a structure in which the lifting and lowering of the lifting and lowering mechanism operates the lifting and lowering operation bar, and the lifting and lowering operation bar forcibly interlocks the lifting shaft and the weight lifting mechanism.

Therefore, there is a possibility that any one of the various parts constituting the safety gate opening / closing part may be crushed or damaged. In such a case, there is a case where a force is applied to other parts forcibly interlocked, . In fact, the statistical safety industry in the lift industry is experiencing the most maintenance in the safety switchgear part.

Korean Patent Publication No. 10-2008-0088110

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems and provide a safety gate opening / closing device for a lift for a construction which can easily attach and detach a security door opening and closing part to a safety door frame.

It is another object of the present invention to provide a construction lift which allows the horizontal plane of the safety door to further rotate the rotary plate in the horizontal direction when the operator pushes the safety door even if the operating axis of the solenoid is rotated such that the rotary plate does not completely deviate from the horizontal plane of the safety door. And to provide a safety switchgear.

It is still another object of the present invention to provide a safety gate opening / closing apparatus for a lift for a construction in which the number of parts of safety gate opening and closing parts is reduced.

To achieve these and other advantages and in accordance with the purpose of the present invention, as embodied and broadly described herein, there is provided a safety gate opening / closing device for a building lift, comprising: a safety door frame installed on each floor of a building, A safety door lock hinge coupled to the safety door frame and interlocked when opening and closing the safety door, and a security door opening / closing device for a construction lift, which is coupled to the opening / closing door coupling shaft to limit the rotation of the door lock, The safety gate opening / closing portion includes a guide slidably engaged with the opening / closing portion coupling shaft, a fixing bolt fastened to the guide and fixing the guide to the opening / closing portion coupling shaft, a fixing plate fixed to one surface of the guide, A rotating plate coupled to the hinge axis; and a rotating plate fixed to the holding plate such that the rotating plate is rotated within a range of 90 [deg.] Relative to the holding plate A restoring spring whose one end is coupled to the rotating plate and the other end is coupled to the case so that the rotating plate is pulled toward the case to elastically support one surface of the rotating plate to the corresponding surface of the case; A first magnet and a second magnet fixed to the fixed plate and the rotating plate and elastically pushing the rotating plate when the rotating plate is rotated toward the fixed plate, respectively, by operating the operating shaft to rotate the rotating plate by pushing the rotating plate toward the fixed plate.

In order to accomplish the same object of the present invention, the safety gate opening / closing device of the construction lift of the present invention comprises a safety door frame installed on each floor of a building and provided with an opening / closing part coupling shaft, A security door which is hinged to both sides of the safety door frame and which is interlocked when opening and closing the safety door, and a security door which is coupled to the opening and closing shaft and restricts the rotation of the safety door, In the opening / closing apparatus, the safety gate opening / closing section includes a guide slidably engaged with the opening / closing section coupling shaft, a fixing bolt fastened to the guide and fixing the guide to the opening / closing section coupling shaft, a fixing plate fixed to one surface of the guide, A rotating plate which is fixed to the holding plate so that the rotating plate rotates only within a range of 90 [deg.] Relative to the holding plate; A torsion spring which is coupled to the hinge shaft and has one end supported by the fixing plate and the other end supported by the rotation plate to elastically support the rotation plate on the case; And a solenoid for pushing the rotary shaft toward the fixed plate side and rotating the rotary shaft.

Another feature of the safety gate opening / closing device of the present invention is that the rotary plate is provided with a curved surface at the lower edge corner, and even if the operating axis of the solenoid is rotated such that the rotary plate does not completely deviate from the horizontal plane of the safety door, The horizontal surface of the safety latch and the curved surface of the rotating plate are in sliding contact with each other so that the horizontal surface of the safety latch rotates the rotating plate further in the horizontal direction.

As described above, according to the present invention, when the guide of the safety gate opening / closing portion is inserted into the opening / closing portion coupling shaft and the fixing bolt is tightened, the safety gate opening / closing portion is simply coupled to the safety door frame. Is separated from the safety door frame. Therefore, it is not necessary to drill the safety door frame to weld the safety door frame to the safety door frame, to weld the safety door frame and the safety door frame, to attach and detach the guide of the safety door frame to and from the opening / The opening / closing part can be easily installed or replaced only by a simple operation.

Further, in the present invention, a curved surface is formed at the lower edge of the rotating plate. Therefore, even if the operating axis of the solenoid is rotated only by about 60 degrees, that is, even if the operating axis of the solenoid is rotated so as not to completely deviate from the horizontal plane of the safety latch, even when the operator pushes the safety buzzer, the horizontal plane of the safety latch and the curved surface of the rotating plate slide The horizontal plane of the safety latch rotates the rotary plate further in the horizontal direction. Therefore, even if the operating axis of the solenoid is slightly advanced due to the curved surface of the rotary plate, the safety gate can be opened and closed, thereby minimizing the size of the solenoid, thereby reducing manufacturing cost.

The torsion spring may be coupled to the hinge shaft, one end of the torsion spring is supported by the fixing plate, and the other end is supported by the rotation plate so that the rotation plate is elastically supported to the case side. Accordingly, when the solenoid is not operated, the rotary plate is elastically supported by the torsion spring by the torsion spring, so that the safety door lock is maintained. When the solenoid is supplied with power, the operation shaft rotates the rotary plate, , When the power to the solenoid is interrupted, the rotating plate is elastically supported on the case side by the restoring force of the torsion spring, so that the safety tab is locked. Therefore, since one torsion spring replaces the first magnet, the second magnet, and the restoring spring, the number of components of the safety switch can be reduced, thereby reducing the assembly cost and manufacturing cost.

In addition, in the safety gate opening / closing apparatus of the construction lift of the present invention, since the conventional skid bar and safety gate opening and closing sections are eliminated, the lift and the building can be brought close to each other within about 60 mm, It is also prevented that the building material or the worker falls into the space. In addition, since the space between the building and the lift is narrow, there is no need to install an auxiliary footrest on the lift. Thus, there is no need to expand and collapse the footrests every time the operator moves the lift and the building, .

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic front perspective view showing a safety gate opening /
Fig. 2 is a rear perspective view of Fig.
3 is an exploded perspective view of the safety gate opening / closing device of the constructional lift of the present invention.
Fig. 4 is a plan view of Fig. 3
5 is a schematic partial side view showing a state in which the first limit switch and the second limit switch are engaged with the lift and the safety latch;
Fig. 6 is a perspective view showing a state in which the safety axis of the solenoid is actuated,
Figure 7 is a partial exploded top view of Figure 6
8 is a schematic view showing the safety device and automatic operation device installed in each layer
9 is a block diagram of the automatic operation device
FIG. 10 is a partial extracting plan view showing another embodiment of the present invention

Specific features and advantages of the present invention will become more apparent from the following description taken in conjunction with the accompanying drawings.

FIG. 1 is a schematic frontal perspective view showing a safety gate opening / closing device of a constructional lift according to the present invention, FIG. 2 is a rear perspective view of FIG. 1, and FIG. 3 is an exploded perspective view of a safety gate opening and closing device of a constructional lift of the present invention. Fig. 4 is a plan view of Fig. 3, Fig. 5 is a schematic partial side view showing a state in which the first limit switch and the second limit switch are engaged with the lift and safety latch, Fig. 6 is a cross- It is a perspective view that the safety gate is opened and the safety gate is opened. FIG. 7 is a partial fragmentary plan view of FIG. 6, FIG. 8 is a schematic view showing an automatic safety device installed in each layer, and FIG. 9 is a block diagram of an automatic operation device.

The safety gate opening / closing device of the present invention includes a safety door frame 10 installed on each floor of a building and provided with an opening / closing part coupling shaft 11 at an upper portion thereof, A safety door lock 30 which is hinged to the safety door frame 10 and interlocked with the safety door 20 when the safety door 20 is opened and closed, (40) for limiting the opening and closing of the safety gate (20) by limiting the opening / closing of the safety gate (20).

The safety door lock 30 has a horizontal cross section in a shape and has a vertical plane 31 for supporting the upper end of the safety gate 20 and a horizontal plane 32 for supporting the rotary plate 44 of the safety gate opening / ). An opening and closing shaft 33 is formed at both ends of the safety door 30 and the opening and closing shaft 33 is hinged to the safety door frame 10. Accordingly, the safety door lock 30 is pivoted in the vertical direction about the opening and closing shaft 33.

The safety gate opening and closing part 40 includes a guide 41, a fixing bolt 42, a fixing plate 43, a rotating plate 44, a case 50, a restoring spring 53, a solenoid 51, a first magnet 46 And a second magnet 47 as shown in Fig. The guide 41 is slidably engaged with the opening / closing part engaging shaft 11. The fixing bolt (42) is fastened to the guide (41) to fix the guide (41) to the opening / closing part engaging shaft (11).

The fixing plate (43) is fixed to one surface of the guide (41).

The guide 41 and the fixed plate 43 may be separately provided and welded to each other, but they may be fixed to each other. However, the rectangular guide may be long so that one side of the guide may serve as the fixed plate 43. That is, it is also possible to prepare a guide in the form of a rectangular barrel having a long length, and to directly fix the rotation plate 44 and the case 50 to be described later on one side of the guide. In this way, the role of the guide 41 and the fixed plate 43 can be replaced by one component.

The rotary plate 44 is coupled to the fixed plate 43 with a hinge shaft 48 so as to be rotated in the horizontal direction.

The first magnet 46 and the second magnet 47 are fixed to the fixed plate 43 and the rotary plate 44 respectively and elastically push the rotary plate 44 when the rotary plate 44 is rotated toward the fixed plate 43 . The second magnet 47 of the rotary plate 44 is first rotated to the first magnet 46 of the fixed plate 43 by the operation shaft 52 of the solenoid 51 and the rotary motion of the rotary plate 44 Is secondarily rotated by the first magnet (46) of the fixed plate (43). In this state, when the safety gate 20 is closed, the rotating plate 44 is pushed toward the case 50 by the repulsive force of the first magnet 46 and the second magnet 47 which are close to each other.

The case 50 is fixed to the fixing plate 43 so that the rotation plate 44 is restricted to rotate within a range of 90 占 with respect to the fixing plate 43. [

One end of the restoring spring 53 is coupled to the rotating plate 44 and the other end is coupled to the case 50 to pull the rotating plate 44 toward the case 50 so that one surface of the rotating plate 44 faces the corresponding surface So as to be elastically supported.

The rotation plate 44 is first rotated to the fixed plate 43 side by the operation shaft 52 of the solenoid 51 and the safety valve 20 is further rotated to the second side of the fixed plate 43. When the solenoid 51 is rotated, The rotating plate 44 is firstly pushed toward the case 50 by the repulsive force of the first magnet 46 and the second magnet 47 which are close to each other and the restoring spring The rotary plate 44 is pulled toward the case 50 by the restoring force of the fixing plate 43 and the rotary plate 44 at an angle of 90 °.

The solenoid 51 is installed inside the case 50 and when the power is supplied, the operating shaft 52 is operated to push the rotating plate 44 toward the holding plate 43 and rotate the solenoid 51.

The first magnet 46 and the second magnet 47 are fixed to the fixed plate 43 and the rotating plate 44 and elastically push the rotating plate 44 when the rotating plate 44 is rotated toward the fixed plate 43 I will.

On the other hand, a curved surface 45 is formed on the lower edge of the rotary plate 44. Therefore, even if the operating shaft 52 of the solenoid 51 is rotated such that the rotary plate 44 is not completely deviated from the horizontal plane 32 of the safety pin 30, when the operator pushes the safety pin 20, The horizontal surface 32 of the safety door lock 30 further rotates the rotary plate 44 in the horizontal direction while the horizontal surface 32 and the curved surface 45 of the rotary plate 44 slide.

The safety gate opening / closing apparatus of the constructional lift of the present invention having such a configuration operates as follows.

First, when the lift 1 is stopped on the floor, it is informed by the two signals that the lift 1 is stopped. First, the automatic operation device receives a signal that it has arrived at the floor. When the lift 1 is stopped on the floor, the first limit switch 3 of the limit switch box 2 is operated to inform that the lift 1 has reached the corresponding floor. A proximity sensor (not shown) may be provided instead of the first limit switch 3.

When the lift 1 arrives at the floor, it is detected that the lift 1 has arrived at the floor by the CPU of the automatic operation device, and the lift 1 is detected by the first limit switch 3 or the proximity sensor It is detected that it has reached the floor.

When the lift 1 is stopped on the floor, it is informed that the lift 1 is stopped by two signals. Then, power is supplied to the solenoid 51 to operate the operation shaft 52.

Therefore, since the position of the lift 1 is doubly detected by the CPU and the first limit position 3 (or the proximity sensor) of the automatic operation device, and then the safety door lock 30 is released, .

On the other hand, on the opposite side of the limit switch box 2, a second limit switch 4 is provided. The second limit switch 4 is actuated when the safety gate 20 is opened and the safety door lock 30 is turned upward to detect door opening of the safety gate 20.

When the lift 1 stops at the corresponding layer, power is supplied to the solenoid 51 for about 10 seconds and the operating shaft 52 of the solenoid 51 advances to rotate the rotating plate 44 by about 60 degrees.

The force for further rotating the rotary plate 44 is generated when the operator opens the safety gate 20. That is, when the worker opens the safety gate 20, the safety gate 20 pushes the vertical surface 31 of the safety gate 30 so that the safety gate 30 can move upward Loses. At this time, the horizontal surface 32 of the safety door 30 is in sliding contact with the portion of the curved surface 45 of the rotary plate 44 which is already rotated by about 60 degrees by the operating shaft 52 of the solenoid 51, Loses. When the horizontal surface 32 of the safety door 30 is raised to the upper side, the rotary plate 44, which is in contact with the horizontal plate 32, is further rotated toward the fixing plate 43 side. Therefore, the rotary plate 44 is further rotated by the force of the horizontal surface 32 of the safety door lock 30 being displaced.

When the safety guard 20 is closed, the adjacent first magnet 46 and the second magnet 47 repel each other to push the rotating plate 44 toward the case 50, and the restoring spring 53 rotates the rotating plate 44 The fixing plate 43 and the rotary plate 44 form an angle of 90 DEG when viewed from the plane.

The restoring force of the restoring spring 53, that is, the pulling force, must be smaller than the pushing force of the operating shaft 52 of the solenoid 51. [ This is because the rotary plate 44 rotates in the horizontal direction when the operation shaft 52 advances.

Therefore, when the solenoid 51 is powered off, the rotating plate 44 is returned to its original state by the pushing force of the first magnet 46 and the second magnet 47 and the restoring force of the restoring spring 53. When the rotary plate 44 is returned to its original position, the safety plate 30 is rotated 90 degrees with respect to the fixing plate 43, so that the horizontal plate 32 can not be supported upward. That is, the closed safety gate 20 is not opened.

Normally, power is supplied to the solenoid 51 for about 10 seconds, so that the occupant of the lift 1 must push the safety gate 20 within 10 seconds.

Since the operation shaft 52 pushes the rotary plate 44 by about 60 ° when the solenoid 51 is supplied with power and the operator pushes the safety gate 20, And the horizontal surface 32 of the safety door lock 30 further pushes the curved surface 45 of the rotary plate 44 to further rotate the rotary plate 44. As a result, (20) is opened while being shifted upward from the center (33).

If the operator in the building does not open the safety gate 20 within ten seconds of power being supplied to the solenoid 51 or if the operator in the lift 1 does not push the safety gate 20, The power supply is cut off and the safety gate 20 is locked by the safety gate 30.

In this case, when an operator in the building presses a pager in the building or when an operator in the lift 1 presses the floor number button in the lift 1 again, the solenoid 51 is powered again by the automatic operation device for 10 seconds .

If the solenoid 51 does not operate properly due to a failure in the automatic operation device, the operator inside the building or the operator in the lift 1 may open the safety gate 20 after removing the rotary plate 44 by hand .

The safety gate opening / closing device of the constructional lift of the present invention has the following advantages.

The safety gate 40 is simply coupled to the safety door frame 10 by fastening the fixing bolt 42 after inserting the guide 41 of the safety gate opening and closing part 40 into the opening and closing part coupling shaft 11, 42 are released and the guide 41 is separated from the opening / closing part engaging shaft 11, the safety opening / closing part 40 is separated from the safety door frame 10.

Therefore, it is not necessary to puncture the safety door frame 10 to weld the safety door frame 40 to the safety door frame 10 or to weld the safety door frame 40 and the safety door frame 10, The safety gate switch 40 can be easily installed or replaced only by a simple operation of attaching and detaching the guide 41 of the safety door frame 10 to and from the opening and closing part coupling shaft 11 of the safety door frame 10 and tightening or loosening the fixing bolt 42.

Further, in the present invention, a curved surface 45 is formed at the bottom edge of the rotating plate 44. [

Even if the operating shaft 52 of the solenoid 51 rotates only about 60 degrees or the operating axis 52 of the solenoid 51 moves the rotating plate 44 to the horizontal plane 32 of the safety pin 30 The horizontal surface 32 of the safety door lock 30 and the curved surface 45 of the rotary plate 44 are in sliding contact with each other so that the horizontal surface 32 of the safety door lock 30 ) Further rotates the rotary plate 44 in the horizontal direction.

Therefore, even if the operation shaft 52 of the solenoid 51 is slightly advanced due to the curved surface 45 of the rotary plate 44, the safety guard 20 can be opened and closed, so that the size of the solenoid 51 can be minimized. The cost can be reduced.

In addition, since the conventional skid bar is eliminated, the safety gate opening / closing apparatus of the present invention can close the lift 1 and the building with a distance of about 60 mm, It is prevented that the building materials or the workers fall down even in the space of both sides. Further, since the space between the building and the lift 1 is narrow, it is not necessary to provide an auxiliary footrest on the lift 1. Accordingly, since the operator does not need to unfold and collapse the auxiliary footrest every time the operator moves the lift 1 and the building, Noise can be eliminated and the construction efficiency can be greatly improved.

10 is a fragmentary plan view showing another embodiment of the present invention. The present invention differs from FIGS. 1 to 7 in that the first magnet 46, the second magnet 47 and the restoring spring 53 are replaced by a torsion spring 60, 1 to 7.

The safety gate opening / closing part 40 of the safety gate opening / closing device of the construction lift of the present invention includes a guide 41 slidably engaged with the opening / closing part engaging shaft 11, a guide 41 fastened to the guide 41, A fixing plate 43 fixed to one surface of the guide 41 and a rotary plate 43 connected to the fixing plate 43 by a hinge shaft 48 so as to be rotated in the horizontal direction A case 50 which is fixed to the fixing plate 43 and restricts the rotation plate 44 to rotate only within a range of 90 degrees with respect to the fixing plate 43 and a case 50 which is coupled to the hinge shaft 48, A torsion spring 60 which is supported by the rotation shaft 43 and whose other end is supported by the rotation plate 44 to elastically support the rotation plate 44 to the case 50; And a solenoid 51 for actuating the rotary plate 52 to rotate the rotary plate 44 toward the fixed plate 43 side.

Therefore, when the solenoid 51 does not operate, the rotation plate 44 is elastically supported on the case 50 side by the torsion spring 60, so that the locked state of the safety door lock 30 is maintained and the solenoid 51 The operation shaft 52 rotates the rotary plate 44 to release the safety door lock 30. When the power to the solenoid 51 is cut off, the rotary plate 44 is rotated by the restoring force of the torsion spring 60, Is securely supported on the case (50) side, so that the safety door lock (30) is locked.

Therefore, since one torsion spring 60 replaces the first magnet 46, the second magnet 47, and the restoring spring 53 of Figs. 1 to 7, the number of parts of the safety gate opening / closing part 40 is reduced, Assembly cost and manufacturing cost are reduced.

On the other hand, the anti-corrosive coating layer may be applied around the operating axis 52 of the solenoid 51 to prevent corrosion of the surface, and the surface coating material of the metallic material according to the present invention for preventing the corrosion phenomenon, 35% by weight of sol, 5% by weight of boron, 5% by weight of CMC (Carboxy Methyl Cellulose), 5% by weight of zirconium, 5% by weight of titanium and 45% by weight of aluminum oxide (Al2O₃).

Benzotriazole is added for the purpose of preventing corrosion and preventing discoloration, and boron serves as a deoxidizer.

CMC (Carboxy Methyl Cellulose) is a white or whitish powder with high water absorption. It is easily dissolved in water to exhibit viscosity, forming a film, and acting as a dispersant.

Zirconium acts to enhance abrasion resistance and corrosion resistance, and titanium is a corrosion-resistant transition metal element with excellent water resistance and corrosion resistance.

Aluminum oxide is added for the purpose of refractoriness and chemical stability.

The reason why the proportions of the constituent components are limited as described above is that the present inventors have analyzed through several test results, and as a result, showed the optimum corrosion preventing effect at the above ratios.

In addition, the periphery of the solenoid 51 may be formed with an antifouling coating layer applied with a composition for antifouling coating so as to effectively prevent and remove the adhesion of contaminants. The antifouling coating composition contains sodium hydroxide and alkyl betaine, and the total content of sodium hydroxide and alkyl betaine is 1 to 10 wt% with respect to the total aqueous solution.

The sodium hydroxide and alkyl betaine are preferably used in an amount of 1 to 10% by weight based on the total weight of the composition. When the content is less than 1% by weight, the coating properties of the base material deteriorate. When the content exceeds 10% by weight, Precipitation tends to occur.

On the other hand, as a method of applying the present anti-fouling coating composition onto the solenoid 51, it is preferable to coat it by a spray method. The thickness of the final coated film on the solenoid 51 is preferably 500 to 2000 angstroms, and more preferably 1000 to 2000 angstroms. When the thickness of the coating film is less than 500 ANGSTROM, there is a problem that it deteriorates in the case of a high-temperature heat treatment. When the thickness is more than 2000 ANGSTROM, crystallization of a coated surface tends to occur.

The first magnet (46) and the second magnet (47) may be made of a rubber-made magnet. The ratio of the raw material content of the rubber material is 60 parts by weight of rubber, 33 to 36 parts by weight of carobone, And 1 to 3 parts by weight of sulfur as an accelerator are mixed.

When the content is less than 33 parts by weight, the elasticity and abrasion resistance are reduced. When the content is more than 36 parts by weight, the content of rubber as a main component is relatively small and the elasticity may be lowered. Therefore, 33 to 36 parts by weight.

The antioxidant may be selected from 3C (N-PHENYL-N'-ISOPROPYL-P-PHENYLENEDIAMINE) or RD (POLYMERIZED 2,2,4-TRIMETHYL-1,2-DIHYDROQUINOLINE) If the content is less than 5 parts by weight, the product tends to be oxidized. If the amount is more than 5 parts by weight, the content of the rubber as the main component may be relatively small and the elasticity may be lowered. Weight is adequate.

1 to 3 parts by weight of sulfur as a promoter is mixed. If less than 1 part by weight, the effect of vulcanization is insignificant in the heating process during molding, so at least 1 part by weight is added. If the amount is more than 3 parts by weight, the content of the rubber as the main component may be relatively small and the elasticity may be lowered. Therefore, 1 to 3 parts by weight is appropriate.

Accordingly, since the elasticity, toughness and rigidity of the first magnet 46 and the second magnet 47 are increased, the durability of the first magnet 46 and the second magnet 47 is improved, And the life of the second magnet (47) is increased.

In addition, the safety device 20 can be coated with a fragrance material having a function such as a treatment for respiratory diseases and the like, thereby achieving effects such as worker's fatigue recovery and health promotion.

The functional oil may be mixed with 95 to 97% by weight of a perfume, 3 to 5% by weight of a functional oil, 50% by weight of Helichrysum oil, , And 50% by weight of Patchouli oil.

Here, the functional oil is preferably mixed with 3 to 5% by weight based on the perfume. If the mixing ratio of the functional oil is less than 3% by weight, the effect is insignificant. If the mixing ratio of the functional oil exceeds 3 to 5% by weight, the function is not greatly improved, but the manufacturing cost is greatly increased.

Among the functional oils, helichrysum oil is one of the main chemical elements such as nerol, geraniol, linalol, and has a good effect on antibacterial, antibacterial, antiseptic, antiallergic and anti-inflammatory.

Patchouli oil oil is mainly composed of patchouliene, eugenol, carvone, etc. It has excellent effect on sterilization, preservation, anti-inflammation and skin inflammation treatment.

As the functional oil is coated on the safety glass 20, it contributes to the recovery of the fatigue of the worker and the health promotion.

1: Lift 2: Limit switch box
3: first limit switch 4: second limit switch
10: Safety door frame 11:
20: Safety goggles 30: Safety goggles
31: vertical plane 32: horizontal plane
33: opening / closing shaft 40: safety door opening / closing part
41: Guide 42: Fixing bolt
43: fixed plate 44: rotating plate
45: curved surface 46: first magnet
47: second magnet 48: hinge shaft
50: Case 51: Solenoid
52: operating shaft 60: torsion spring

Claims (3)

A safety door provided on each floor of the building and provided with an opening / closing part coupling shaft, a safety door installed to be opened and closed on the safety door, a safety door hinged to both sides of the safety door, And a safety gate opening / closing part for restricting the turning of the safety gate so as to restrict opening and closing of the safety door,
The safety gate opening / closing part (40)
A guide 41 slidably coupled to the opening / closing part engaging shaft 11,
A fixing bolt 42 which is fastened to the guide 41 and fixes the guide 41 to the opening and closing part coupling shaft 11,
A fixing plate 43 fixed to one surface of the guide 41,
A rotary plate 44 coupled to the fixed plate 43 with a hinge shaft 48 so as to be rotated in the horizontal direction,
A case 50 fixed to the fixing plate 43 and restricting rotation of the rotation plate 44 only within a range of 90 degrees with respect to the fixing plate 43,
One end of the rotation plate 44 is coupled to the rotation plate 44 and the other end is coupled to the case 50 to pull the rotation plate 44 toward the case 50 so that one surface of the rotation plate 44 is elastically supported on the corresponding surface of the case 50 A restoring spring 53,
A solenoid 51 installed inside the case 50 and operating the operation shaft 52 when the power is supplied to rotate the rotary plate 44 to the fixed plate 43 side,
A first magnet 46 and a second magnet 47 which are fixed to the fixed plate 43 and the rotary plate 44 and elastically push the rotary plate 44 when the rotary plate 44 is rotated toward the fixed plate 43 Wherein the opening / closing device of the safety lift of the construction lift is characterized in that the opening /
A safety door provided on each floor of the building and provided with an opening / closing part coupling shaft, a safety door installed to be opened and closed on the safety door, a safety door hinged to both sides of the safety door, And a safety gate opening / closing part for restricting the turning of the safety gate so as to restrict opening and closing of the safety door,
The safety gate opening / closing part (40)
A guide 41 slidably coupled to the opening / closing part engaging shaft 11,
A fixing bolt 42 which is fastened to the guide 41 and fixes the guide 41 to the opening and closing part coupling shaft 11,
A fixing plate 43 fixed to one surface of the guide 41,
A rotary plate 44 coupled to the fixed plate 43 with a hinge shaft 48 so as to be rotated in the horizontal direction,
A case 50 fixed to the fixing plate 43 and restricting rotation of the rotation plate 44 only within a range of 90 degrees with respect to the fixing plate 43,
A torsion spring 60 coupled to the hinge shaft 48 and having one end supported by the fixing plate 43 and the other end supported by the rotation plate 44 to elastically support the rotation plate 44 to the case 50;
And a solenoid (51) installed in the case (50) and operating the operation shaft (52) when power is supplied to push the rotation plate (44) toward the fixed plate (43) Device.
The method according to claim 1 or 2,
A curved surface 45 is formed in the lower edge of the rotary plate 44,
Even if the operation shaft 52 of the solenoid 51 is rotated such that the rotary plate 44 is not completely deviated from the horizontal plane 32 of the safety pin 30, when the operator pushes the safety pin 20, 32) and the curved surface (45) of the rotary plate (44) are in sliding contact with each other so that the horizontal surface (32) of the safety door lock (30) further rotates the rotary plate Professional switchgear.

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