KR20200079648A - Safety cabinet - Google Patents

Abstract

The present invention relates to a fire-fighting enclosure which is implemented to prevent fire or damage to electric loads by blocking power supply in case of a short circuit or overload while distributing power to each load by receiving commercial power supplied from the outside. The fire-fighting enclosure comprises: an enclosure formed in a box shape, having a plurality of sockets for connecting plugs installed outside and having an earth leakage breaker for blocking a current supplied to the sockets installed in an inner space; and a stand installed on a lower portion of the enclosure and supporting the enclosure.

Description

Fire-fighting enclosure {Safety cabinet}

The present invention relates to an enclosure for fire fighting, and more particularly, to an enclosure in which various power facilities and devices are mounted, such as a switchboard, a motor control panel, a water switchboard, and a distribution panel.

Currently, in buildings such as apartments and officetels, distribution panels are installed to supply commercial power to loads. In addition, when commercial power is cut off, emergency power is supplied to supply power to emergency loads.

The distribution panel is usually equipped with a circuit breaker (MCCB, MOULDED CASE CIRCUIT BRAKER) and an earth leakage breaker (ELCB, EARTH LEAKAGE DIRCUIT BREAKER).The structure of each circuit breaker has 2 inputs and 2 outputs for a single phase, and 3 phase 3 In the case of a wire type, it has three input terminals and three output terminals on the R, T, and S phases. In the case of a three-phase four wire type, it is configured to have four input terminals and four output terminals on the R, S, T, and N phases, including the neutral line N.

The circuit breaker is used as a circuit breaker for overload and overcurrent protection, and a circuit breaker is used as a circuit breaker for short circuit, overload and overcurrent protection.

When these breakers are configured in the distribution panel, according to the electrical design standard, a breaker for wiring is generally used as the main breaker, and an earth leakage breaker is configured as a branch breaker.

The above commercial power is power supplied to each household by being drawn into the building from the transmission line, and the emergency power is a power supplied when the commercial power is cut off due to a power failure or transmission line cutting, such as self-generation or storage facilities or emergency power reception. It means the power supplied by the equipment.

Currently, in buildings such as apartments and officetels, emergency power is supplied to each household when commercial power is cut off, so that emergency lights can be turned on to illuminate the lights. In particular, in the case of an officetel, emergency power must be supplied to turn on the emergency light when commercial power is cut off by a fire method.

This emergency power supply serves to supply power to emergency loads of equipment that must be operated even in the event of a power failure, such as refrigerators, emergency lights, door lock devices, boilers, and telephones.

However, the line to which the emergency power is supplied is configured separately from the existing generation distribution panel, so the commercial power is supplied only to the commercial load through the circuit breaker of the generation distribution panel, and the emergency power is supplied only to the emergency load by supplying the emergency power separately to each unit household. Power is being used.

Accordingly, a need has arisen for a temporary distribution panel that can supply power anytime, anywhere, regardless of space and time.

On the other hand, the above-described background technology is the technical information acquired by the inventor for the derivation of the present invention or acquired in the derivation process of the present invention, and is not necessarily a known technology disclosed to the general public before filing the present invention. .

Korean Registered Patent No. 10-1620804 Korean Registered Patent No. 10-0938233

According to the user's needs, one aspect of the invention can be moved to a place where power supply is required at any time and anywhere, and by receiving commercial power supplied from the outside to the place, distributed power is supplied to each load while power is supplied in case of a short circuit or overload. It provides a fire-fighting enclosure implemented to prevent fire or damage to electrical loads by cutting off the supply.

The technical problems of the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the following description.

Fire-fighting enclosures include enclosures that form an interior space.

The housing, the lower frame is provided with a moving means on the lower surface, at least one pillar having a variable length on the upper surface; An upper frame supported by the at least one pillar and disposed parallel to the lower frame; And a hydraulic jack installed between the lower frame and the upper frame and lifting and lowering the upper frame using an external force provided by a user in order to elevate an object seated on the upper frame. Is supported by, the hydraulic jack, the working fluid is stored, the inner cylinder and the lifting piston is disposed main body; It is installed on the outside of the main body to communicate with the main body to maintain a closed state, a pressure piston is formed therein, and the suction fluid is sucked as the pressure piston descends after the pressure fluid rises as the pressure piston rises An outer cylinder that provides a working fluid to the inner cylinder; A pressure lever connected to the pressure piston disposed inside the external cylinder to transfer external force provided by a user to the pressure piston; And a release valve that releases the pressure of the inner cylinder according to a user's operation so that the working fluid flowing into the inner cylinder is recovered to the main body, and the outer cylinder is provided in plural, and the plurality of outer cylinders Includes a first outer cylinder formed along a central axis coaxial with the pressing lever and at least one second outer cylinder disposed along a diameter circumference of the first outer cylinder, wherein the first cylinder and the at least one second outer The sum of the diameters of the cylinders is 1/3 or less of the diameter of the inner cylinders, and the first outer cylinder and at least one of the second outer cylinders are the main body through an inlet pipe for introducing a working fluid stored in the main body into the inside. The hydraulic jack further includes control means for selectively opening and closing a plurality of inflow pipes formed in each of the first outer cylinder and the at least one second outer cylinder to vary the lifting force of the pressure piston.

Fire enclosure according to an embodiment of the present invention is formed in a box shape, a plurality of outlets for connecting the plug is installed on the outside, a circuit breaker for blocking the current supplied to the outlet is installed in the interior space Being the enclosure; And a stand installed under the housing to support the housing.

In one embodiment, the housing, the case is formed in the form of a box with an open front; A door on which one side is rotatably installed on one side of the opened front side of the case to cover the front side of the case; A plurality of outlets installed on the outside of the case and supplying electricity with a plug; And a short circuit breaker blocking current supplied to the outlets, wherein the case forms at least one through hole for passing a power supply line connected to the short circuit breaker, and the outlet includes: It is installed on at least one of one side, both sides, and rear, and has a cover on the upper side to prevent foreign matter from entering the interior space, and the door has a shape corresponding to the opened front shape of the case. A door body formed; At least one pivoting hinge installed on one side of the door body to be rotatable on one side of the opened front side of the case; A lock hinge installed on the other side of the door body; And a lock hanger installed on the other upper side of the case opposite to the other upper side of the door body on which the lock hinge is installed, wherein the stand includes: a vertical bar extending downwardly from both sides of the case; A horizontal bar installed between a vertical bar installed on one side of the case and a vertical bar installed on the other side of the case; And a support bar installed on the lower side of the vertical bar in an anteroposterior direction to support the vertical bar, the case comprising: a housing formed at an inner front end of the other side; And inserted into the inner space of the housing, to form a shock absorber for absorbing the shock that the door is closed, the shock absorber, the first plate, the second plate, the third plate formed of a "b" type plate and A support portion including a fourth plate; A vibration absorber installed between the plate of the support portion and another plate to absorb vibration; Between the top of the first plate and the top of the second plate, between the front end of the second plate and the front end of the third plate, between the bottom of the third plate and the bottom of the fourth plate, and the fourth plate A connection plate installed two between each of the front end and the front end of the first plate to connect and install the first plate, the second plate, the third plate and the fourth plate; The upper and front ends of the first plate, the top and front ends of the second plate, the front and bottom ends of the third plate, and the bottom and front ends of the fourth plate are formed to extend in the upper or lower direction by two for each plate. Extension plate; Four rotating parts are connected to each other so that the upper or lower portions of the two extension plates extending from each plate face each other and are rotatable; And two supporting bars, each of which is provided with an outer surface of the rotating part, spaced apart in the front-rear direction from the inner space of the housing, and supported by the rotating part to form a space therebetween, wherein the first plate includes , Plate body formed of "b" type plate; Two first upper fastening grooves formed on the upper wings of the plate body formed in an upward direction and connected to each other so as to be able to rotate the front end of the connection plate; A second upper fastening groove formed between the first upper fastening grooves and connected to the lower portion of the extension plate so as to be rotatable; Two first front end fastening grooves formed on front end wings of the plate main body formed in the front end direction to connect and install the top of the connection plate so as to be rotatable; And a second front end fastening groove formed between the first front end fastening grooves and connected to the lower portion of the extension plate so as to be rotatable, wherein the extension plate includes the second top fastening groove or the second front end fastening groove. A sliding groove in the vertical direction may be formed in a lower portion connected to the second upper fastening groove or the second shear fastening groove so that the groove can slide vertically.

According to one aspect of the present invention described above, by receiving commercial power supplied from the outside and supplying power to each load while distributing power, cut off the power supply in the event of a short circuit or overload to prevent fire or damage to the electrical load. It can be placed in a place close to the work site, can properly distribute the use load, and has the effect of preventing excessive use of mobile wires.

1 is a view showing a schematic configuration of a fire fighting enclosure according to an embodiment of the present invention.
FIG. 2 is a view showing the enclosure of FIG. 1.
FIG. 3 is a view showing the door of FIG. 2.
FIG. 4 shows the stand of FIG. 1.
5 and 6 are views showing another example of the case of FIG. 2.
7 is a perspective view showing a mobile lifting device equipped with a hydraulic jack according to an embodiment of the present invention.
8 is a perspective view showing a specific configuration of the hydraulic jack shown in FIG. 7.
9 is a conceptual diagram for explaining the internal configuration and operating principle of the hydraulic jack 600 shown in FIGS. 7 and 8.
10 is a view showing the outer cylinder and the connecting portion.
11 is a perspective view showing a mobile lifting device equipped with a hydraulic jack according to another embodiment of the present invention.
12 to 14 are perspective views showing a hydraulic jack 600a according to another embodiment of the present invention.
15 is a perspective view showing a mobile lifting device equipped with a hydraulic jack according to another embodiment of the present invention.
16 is a perspective view showing the elastic support.
FIG. 17 is a view showing the first plate of FIG. 16.
18 is a flowchart illustrating a method of manufacturing a plastic sheet for manufacturing the plastic sheet of the present invention.
19 is a view showing a load distribution unit.

For a detailed description of the present invention, which will be described later, reference is made to the accompanying drawings that illustrate, by way of example, specific embodiments in which the present invention may be practiced. These examples are described in detail enough to enable those skilled in the art to practice the present invention. It should be understood that the various embodiments of the invention are different, but need not be mutually exclusive. For example, certain shapes, structures, and characteristics described herein may be implemented in other embodiments without departing from the spirit and scope of the invention in connection with one embodiment. In addition, it should be understood that the location or placement of individual components within each disclosed embodiment can be changed without departing from the spirit and scope of the invention. Therefore, the following detailed description is not intended to be taken in a limiting sense, and the scope of the present invention, if appropriately described, is limited only by the appended claims, along with all ranges equivalent to those claimed. In the drawings, similar reference numerals refer to the same or similar functions throughout several aspects.

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the drawings.

1 is a view showing a schematic configuration of a fire fighting enclosure according to an embodiment of the present invention.

Referring to FIG. 1, a fire fighting enclosure 10 according to an embodiment of the present invention includes a housing 100 and a stand 200.

The housing 100 is formed in a box shape, a plurality of outlets for connecting plugs are installed on the outside, and an earth leakage breaker for blocking current supplied to the outlets is installed in the interior space, and a stand 200 is provided at the lower side. ) May be installed to be installed spaced apart from the ground by an interval corresponding to the height of the stand 200.

The stand 200 is installed under the enclosure 100 to support the enclosure 100.

The fire fighting enclosure 10 having the above-described configuration receives commercial power supplied from the outside and distributes power to each load while blocking the power supply in the event of a short circuit or overload to prevent fire or damage to the electrical load. By doing so, it can be arranged in a place close to the work site as a mobile type, and can properly distribute the use load and prevent excessive use of the mobile wire.

FIG. 2 is a view showing the enclosure of FIG. 1.

Referring to FIG. 2, the enclosure 100 includes a case 110, a door 120, a plurality of outlets 130, and an earth leakage breaker 140.

The case 110 is formed in a box shape with an open front surface to form a closed interior space, and the opened part is opened and closed by the door 120, and the leakage breaker 140 sensitive to foreign matter such as rain or snow is external. Protect from the environment.

In one embodiment, the case 110, at least one through hole 111 for passing the power supply line connected to the earth leakage breaker 140 is formed on at least one side of one side and the other side, the upper side and the lower side Can be.

The door 120 is installed so that one side is rotatable on one side of the opened front side of the case 110 to cover the front side of the case 110 to block the interior space of the case 110 from the outside.

The outlet 130 is installed on the outside of the case 110, a plug installed in an extension from a device requiring power is fastened, and a current supplied through the earth leakage breaker 140 is supplied as a plug.

In one embodiment, the outlet 130 is installed on at least one of one side, both sides, and the back side of the case 110, and the cover 131 on the upper side to prevent foreign matter from entering the interior space It can be provided.

The earth leakage breaker 140 blocks current supplied to the outlets 130.

Here, the earth leakage breaker 140 may be formed of a commercial earth leakage break, and refers to a device that automatically opens a switch to disconnect current from flowing when electricity leaks out of a wire.

FIG. 3 is a view showing the door of FIG. 2.

Referring to FIG. 3, the door 120 includes a door body 121, a rotating hinge 122, a lock hinge 123, and a lock hanger 124.

The door body 121 is formed in a shape corresponding to the opened front shape of the case 110, and one side facing the case 110 is connected to the case 110 by a rotation hinge 122 so as to be rotatable. Is installed, the lock hinge 123 is installed on the other side, and covers the front surface of the case 110 to block the inner space of the case 110 from the outside.

The rotation hinge 122 is provided so that one side of the door body 121 can be rotated on one side of the opened front side of the case 110.

The lock hinge 123 is installed on the upper side of the other side of the door body 121 and fastens the lock hanger 124.

The lock hanger 124 is installed on the upper side of the other side of the case 110 facing the upper side of the other side of the door body 121 on which the lock hinge 123 is installed, and the door body 121 is opened on the case 110 If the front cover is closed, the lock hinge 123 is rotated and fastened.

FIG. 4 shows the stand of FIG. 1.

Referring to FIG. 4, the stand 200 includes a vertical bar 210, a horizontal bar 220 and a support bar 230.

The vertical bar 210 is installed to extend from the lower side to the lower side of both sides of the case 110 so that the case 110 is spaced from the ground corresponding to its height.

At this time, the vertical bar 210, may be installed in two or more corresponding to the overall volume or weight of the present invention.

The horizontal bar 220 is installed between the vertical bar 210 installed on one side of the case 110 and the vertical bar 210 installed on the other side of the case 110, so that the vertical bar 210 is warped by impact or the like. Prevents damage or damage.

The support bar 230 is installed in the front and rear reflections on the lower side of the vertical bar 210 to support the vertical bar 210.

5 and 6 are views showing another example of the case of FIG. 2.

Referring to FIG. 5, the case 110 forms the housing 112 and the shock absorber 300.

The housing 112 is formed at an inner front end of the other side of the case 110, and a space corresponding to the shape of the shock absorbing unit 300 is formed inside to create a space in which the shock absorbing unit 300 can be inserted. Form.

At this time, the housing 112 may be provided with two or more corresponding to the size of the present invention.

The shock absorber 300 is inserted into the inner space of the housing 112 and absorbs the shock that the door 120 is closed.

The specific configuration of the shock absorber 300 will be described below in FIG. 6.

7 is a perspective view showing a mobile lifting device equipped with a hydraulic jack according to an embodiment of the present invention.

Specifically, the movable lifting device 20 equipped with a hydraulic jack according to an embodiment of the present invention may include a lower frame 700, an upper frame 800 and a hydraulic jack 600.

The lower frame 700 is a member constituting the lower surface of the movable lifting device 20. The lower surface of the lower frame 700 is provided with a moving means 900, the movable lifting device 20 equipped with a hydraulic jack according to the present invention can be guaranteed mobility.

At least one pillar 1000 may be disposed on the upper surface of the lower frame 700.

As illustrated, four pillars 1000 may be provided at the corners of the lower frame 700, but the number of installations is not limited.

The pillar 1000 may be provided in a form in which the length can be varied. For example, the pillar 1000 may be composed of an outer pillar having a first diameter and a diameter smaller than the first diameter, and inserted into the outer pillar and sliding along the longitudinal direction of the outer pillar. In this case, when the inner column is sliding in the direction of being inserted into the outer column, the overall length of the column 1000 is shortened, and when the inner column is sliding in the direction protruding from the outer column, the entire length of the column 1000 can be increased. However, the pillar 1000 need not be limited to the above-described configuration, and of course, it can be replaced with other conventional structures as long as the length can be varied by external force.

The upper frame 800 may be supported from the lower frame 700 by at least one pillar 1000 and disposed parallel to the lower frame 700. An object to be lifted may be seated on an upper surface of the upper frame 800, and when the length of the pillar 1000 is increased, an object seated on the upper frame 800 is lifted while the upper frame 800 is lifted from the ground. Will be raised.

The hydraulic jack 600 is a device that provides lifting force to the column 1000. Hydraulic jack 600 is installed between the lower frame 700 and the upper frame 800, in order to elevate the object seated on the upper frame 800, the length of the pillar 1000 is varied by using an external force provided by the user By doing so, the upper frame 800 can be elevated. In this regard, it will be described with reference to FIGS. 8 to 10 together.

8 is a perspective view illustrating a specific configuration of the hydraulic jack 600 illustrated in FIG. 7, and FIG. 9 is a conceptual diagram illustrating the internal configuration and operating principle of the hydraulic jack 600 illustrated in FIGS. 7 and 8.

Specifically, the hydraulic jack 600 according to an embodiment of the present invention includes a body 610, an outer cylinder 620, a pressure lever 630 and a release valve 640.

The body 610 is a cylindrical member, and a space in which a working fluid can be stored is formed, and an inner cylinder 611 and a lifting piston 612 may be disposed therein.

The inner cylinder 611 is a cylindrical member formed inside the main body 610, and a working fluid may be stored between the main body 610 and the inner cylinder 611.

The lifting piston 612 is a member installed in the inner cylinder 611 and reciprocating along the longitudinal direction of the inner cylinder 611. That is, when the working fluid is supplied to the inner cylinder 611, the length of the column 1000 increases as the lifting piston 612 rises due to the pressure of the working fluid, and accordingly, it is in contact with the upper portion of the lifting piston 612. The upper frame 800 can rise from the ground.

The outer cylinder 620 is a member for supplying fluid to the inner cylinder 611, and may be connected to the body 610 through a fastening bracket 615 to maintain a closed state with the body 610. A pressure piston 621 is formed inside the pressure piston 621, and the pressure piston 621 may be raised or lowered by the pressure lever 630.

The pressure lever 630 is a member that is connected to the pressure piston 621 and transmits external force provided by the user to the pressure piston 621.

FIG. 10 is a view showing an external cylinder 620 constituting the hydraulic jack 600 and a connection portion 622 for coupling the pressure piston 621 and the pressure lever 630 of the external cylinder 620 to an external cylinder ( The pressure piston 621 formed inside the 620 is physically coupled to the pressure lever 630 through the connection portion 622, and due to this structural feature, the pressure piston 621 is the user's received through the pressure lever 630 External force can be transmitted.

The pressure lever 630 is formed with a through hole for coupling a member such as a pipe that can be gripped by a user, and accordingly, the user moves the pipe up/down while the pipe is coupled to the pressure lever 630. Depending on the external force may be applied to the pressure lever 630. In another embodiment of the present invention, the pressure lever 630 may include the above-described pipe or may be provided integrally with the pipe.

Looking at the specific operation principle of the hydraulic jack 600 according to an embodiment of the present invention, the user to lift the pressure lever 630 while the object to be raised is seated on the upper frame 800 When raised, the negative pressure (負壓) is formed in the outer cylinder 620 while the pressure piston 621 is raised. Accordingly, the working fluid stored between the main body 610 and the inner cylinder 611 may flow into the outer cylinder 620 along the suction pipe 651.

Thereafter, when the user presses the pressure lever 630, the pressure piston 621 descends to apply pressure to the working fluid sucked into the outer cylinder 620. Accordingly, the working fluid sucked into the outer cylinder 620 may move to the inner cylinder 611 along the supply pipe 652. At this time, a backflow prevention valve is installed at one end of the suction pipe 651 connected to the outer cylinder 620 side, so that the working fluid can be pushed only along the supply pipe 652. The lifting piston 612 is raised by the pressure of the working fluid introduced into the inner cylinder 611. This process is repeatedly performed as the user raises and lowers the pressure lever 630, and as a result, the pressure of the inner cylinder 611 gradually increases and the lifting piston 612 gradually rises and the lifting piston ( 612) The object placed on the top is lifted.

The release valve 640 is formed at one end of the supply pipe 652 and is a member in the form of a valve that releases the pressure of the inner cylinder 611 according to the user's operation. That is, when the user wants to lower the object to the original position, when the release valve 640 is opened, the high-pressure charged working fluid flowing into the inner cylinder 611 receives the gravity of the object through the recovery pipe 530 As the pressure of the lifting piston 612 is recovered to the body 610, the pressure of the inner cylinder 611 decreases, and the lifting piston 612 descends due to the gravity of the object, so that the object may descend to its original position. .

As described above, the hydraulic jack 600 according to an embodiment of the present invention can lift or lower a heavy object by using a small force repeatedly applied to the pressure lever 630 from the user.

On the other hand, in another embodiment of the present invention, the user can adjust the magnitude of the pressure provided to the lifting piston 612 according to the type of object and the type of work to be performed. In this regard, it will be described with reference to FIGS. 11 to 14 together.

11 is a perspective view showing a mobile lifting device equipped with a hydraulic jack according to another embodiment of the present invention.

Specifically, the mobile lifting device 30 provided with a hydraulic jack according to another embodiment of the present invention includes a lower frame 700, an upper frame 800 and a hydraulic jack (600a).

At this time, the lower frame 700 and the upper frame 800 constituting the mobile lifting device 30 equipped with a hydraulic jack according to another embodiment of the present invention shown in Figure 11 is an embodiment of the present invention shown in Figure 7 Since the lower frame 700 and the upper frame 800 constituting the movable lifting device 620 equipped with the hydraulic jack according to an example are the same, repeated description will be omitted.

On the other hand, the mobile lifting device 30 equipped with a hydraulic jack according to another embodiment of the present invention constitutes a mobile lifting device 30 equipped with a hydraulic jack shown in FIG. 7, a hydraulic jack according to an embodiment of the present invention ( 600) may be characterized by being replaced by a hydraulic jack (600a) according to another embodiment of the present invention. In this regard, it will be described with reference to FIGS. 12 to 14 together.

12 to 14 are perspective views showing a hydraulic jack 600a according to another embodiment of the present invention.

12 is a perspective view of a hydraulic jack 600a according to another embodiment of the present invention, FIG. 13 is a view comparing an external cylinder constituting the hydraulic jack 600a of FIG. 12, and FIG. 14 is a hydraulic jack shown in FIG. 12 ( It is a conceptual diagram for explaining the internal configuration and operating principle of 600a).

Specifically, the hydraulic jack (600a) according to another embodiment of the present invention, the main body 610, the outer cylinder (620a, 620b, 620c, 620d, 620e, 620f), the pressure lever 630 and the release valve 640 It includes.

At this time, the main body 610, the pressure lever 630, and the release valve 640 constituting the hydraulic jack 600a according to another embodiment of the present invention shown in FIG. 9, one of the present invention shown in FIG. Since the main body 610 constituting the hydraulic jack 600 according to the embodiment, the pressure lever 630 and the release valve 640 are the same, repeated description will be omitted.

Meanwhile, the hydraulic jack 600a according to another embodiment of the present invention may be characterized in that a plurality of external cylinders 620 illustrated in FIG. 7 are provided. That is, the hydraulic jack 600a according to another embodiment of the present invention may be connected to a plurality of external cylinders 620a, 620b, 620c, 620d, 620e, 620f, 620g to the pressure lever 630. Referring to FIG. 11, the hydraulic jack 600a according to another embodiment of the present invention includes six outer cylinders 620b, 620c, centered on a first outer cylinder 620a formed along a central axis coaxial with the pressure lever 630. 620d, 620e, 620f, 620g) is expressed as being disposed along the circumference of the first outer cylinder 620a, but is not limited thereto, and the number of outer cylinders is not limited.

Each of the outer cylinders 620a, 620b, 620c, 620d, 620e, 620f, and 620g is provided in a cylindrical shape, and pressure pistons are formed therein. That is, when a user applies an external force to the hydraulic jack 600a by operating the pressure lever 630, the pressure lever 630 applies the external force provided to each of the external cylinders 620a, 620b, 620c, 620d, 620e, 620f, 620g ).

At this time, when the outer cylinders 620a, 620b, 620c, 620d, 620e, 620f, and 620g are all designed to have the same diameter, they are delivered to the respective outer cylinders 620a, 620b, 620c, 620d, 620e, 620f, 620g) The external force can be uniformly distributed. As another example, when the outer cylinders 620a, 620b, 620c, 620d, 620e, 620f, and 620g are designed to have different diameters, the external force may be distributed and transmitted in proportion to the size of the diameter.

In addition, the sum of the diameters of all the outer cylinders 620a, 620b, 620c, 620d, 620e, 620f, and 620g constituting the hydraulic jack 600a may be designed to be smaller than the diameter of the inner cylinder 611, and more specifically It is preferable that the sum of the diameters of the outer cylinders 620a, 620b, 620c, 620d, 620e, 620f, and 620g is designed to be 1/3 or less than the diameter of the inner cylinder 611. This is because when the diameter of the outer cylinder becomes larger than the diameter of the inner cylinder 611, a force smaller than the magnitude of the external force applied to the outer cylinder can be transmitted to the inner cylinder 611.

A detailed operation principle of the hydraulic jack 600a according to another embodiment of the present invention will be described with reference to FIG. 14.

In FIG. 14, the hydraulic jack 600a according to another embodiment of the present invention is illustrated as having three outer cylinders 620a, 620b, and 620c, but as described above, FIG. 12 shows the hydraulic jack 600a of FIG. 10. A conceptual diagram for explaining the principle of operation, the case where two outer cylinders or four or more outer cylinders are provided may be the same or similar to the operation principle described below.

When the user lifts the pressure lever 630 while the hydraulic jack 600a is in contact with the object under the object to be raised, the pressure pistons 621a, 621b, and 621c of the respective outer cylinders 620a, 620b, and 620c ) As the rise, negative pressure is formed in the outer cylinder 620. Accordingly, the working fluid stored between the main body 610 and the inner cylinder 611 may flow into the outer cylinders 620a, 620b, and 620c along the suction pipes 651a, 651b, and 651c.

Then, when the user presses the pressure lever 630, the pressure pistons 621a, 621b, and 621c descend while applying pressure to the working fluid sucked into the outer cylinders 620a, 620b, 620c. Accordingly, the working fluid sucked into the outer cylinders 620a, 620b, and 620c may move to the inner cylinder 611 along the supply pipes 652a, 652b, and 652c. The lifting piston 612 is raised by the pressure of the working fluid introduced into the inner cylinder 611. This process is repeatedly performed as the user raises and lowers the pressure lever 630, and as a result, the pressure of the inner cylinder 611 gradually increases and the lifting piston 612 gradually rises and the lifting piston ( 612) The object placed on the top is lifted.

At this time, the hydraulic jack 600a according to another embodiment of the present invention is to control the opening and closing of the shut-off valve (6511a, 6511b, 6511c) and the shut-off valve (6511a, 6511b, 6511c) installed on one end of the suction pipe (651a, 651b, 651c) Control means (not shown) may be further included.

The control means (not shown) may be provided in the form of a control circuit disposed inside the fastening bracket 615 to be electrically connected to the shut-off valves 6511a, 6511b, 6511c. In this case, the control means (not shown) may open and close the respective shut-off valves 6511a, 6511b, 6511c according to the user's operation.

Equation 1 above is a mathematical expression showing the force (W) applied to the lifting piston 612, the lifting force (W) acting on the lifting piston 612 is pressed against the diameter (D) of the lifting piston 612 It may be determined by the ratio of the sum (d) of the diameters of the pistons 621a, 621b, 621c and the external force w applied to the pressurized pistons 621a, 621b, 621c.

That is, when the user transmits the external force (w) of a certain size through the pressure lever 630 to the hydraulic jack 800, the lifting force of the lifting piston 612 is the pressing piston for the diameter D of the lifting piston 612 ( 621a, 621b, 621c) may vary depending on the ratio of the diameter (d). Here, the diameter (D) of the lifting piston 612 is determined according to the diameter of the inner cylinder 611, and the sum (d) of the diameters of the pressurizing pistons 621 a, 621 b, 621 c is the outer cylinders 620 a, 620 b, 620 c ) Is determined according to the sum of the diameters, and consequently, the lifting force W applied to the lifting piston 612 depends on the ratio of the diameter sum of the outer cylinders 620a, 620b, 620c to the diameter of the inner cylinder 611. Can be variable.

Therefore, the hydraulic jack 600a according to another embodiment of the present invention selectively controls the opening and closing of the shut-off valves 6511a, 6511b, and 6511c by a control means (not shown), to the external cylinders 620a, 620b, 620c. The amount of the working fluid to be introduced can be adjusted, and the lifting force of the lifting piston 612 is applied by applying pressure to the working fluid only through the pressurizing pistons 621a, 621b, and 621c where the shut-off valves 6511a, 6511b, and 6511c are opened. It can be adjusted.

For example, when only the first shut-off valve 6511a is closed according to the operation of a user's control means (not shown), the external force applied to the working fluid is activated when all shut-off valve valves 6511a, 6511b, 6511c are opened. Only 2/3 of the external force w applied to the fluid can be transmitted. In other words, the diameter of the outer cylinders 620a, 620b, and 620c is varied under the control of a control means (not shown), thereby having an effect of adjusting the lifting force W of the lifting piston 612, and the user listens. According to the type of object to be raised or the type of work to be performed after lifting the object, it is possible to adjust the elevation height of the hydraulic jack 800 according to one operation of the pressure lever 630.

In some other embodiments, the control means (not shown) may automatically determine shut-off valve valves 6511a, 6511b, 6511c to open and close.

As an example, after the control means (not shown) opens only one shut-off valve valve (6511a, 6511b, 6511c) until the pressure lever 630 is operated a predetermined number of times from the initial operation time of the hydraulic jack (600a), It is possible to control the plurality of shut-off valve valves 6511a, 6511b, and 6511c to be opened from the time when the pressure lever 630 is operated a predetermined number of times or more. As a more specific example, the control means (not shown) allows only the first shutoff valve 6611a to be opened until the pressure lever 630 is operated for the first 5 times, and until the pressure lever 630 is operated 6 to 10 times. The first shut-off valve 6611a and the second shut-off valve 6611b may be opened, and from 11 or more times, all shut-off valves 6611a, 6511b, and 6511c may be controlled to be opened. Generally, there are not many types of operations that cannot be performed at a low height when an object is to be lifted by using a hydraulic jack 600a, so when the object is raised at a high speed in an early stage and then raised to an appropriate height, the object is raised. Needs to be finely adjusted. At this time, according to the above-described features of the present invention, when only one shutoff valve is opened, the object is raised at a high speed within a relatively fast time and then gradually increases as the number of open shutoff valves increases over time. The rate of ascent may decrease. Therefore, the user has the effect that the height of the object can be varied even if the hydraulic jack 600a is always operated with a constant size.

As another example, the control means (not shown) may automatically determine shut-off valve valves 6511a, 6511b, and 6511c to be opened and closed according to the weight of an object disposed on the top of the hydraulic jack 600a.

To this end, the hydraulic jack 600a according to some other embodiments may be further provided with a weight sensing means (not shown).

The weight sensing means (not shown) senses the weight of the object disposed on the top of the hydraulic jack 600a and transmits it to the control means (not shown), and the control means (not shown) determines the magnitude of the sensed weight in a predetermined critical section. According to the results compared with each of the shut-off valve valve (6511a, 6511b, 6511c) can be determined whether to open or close.

For example, when it is confirmed that the control means (not shown) is included in the first critical section where the weight of the object is relatively light, all the shut-off valves 6511a, 6511b, and 6511c are opened to 1 of the user's pressure lever 630. It is possible to control the lifting height of the hydraulic jack 800 according to the rotation operation to be relatively low. On the other hand, if it is confirmed that the control means (not shown) is included in the second critical section where the object is relatively heavy, the at least one shut-off valve 6511a, 6511b, 6511c is opened to operate the user's pressure lever 630 once. According to the hydraulic jack 600a, it is possible to control the lifting height of the hydraulic jack 600a to be relatively low. This is because, when the weight of the object is relatively light, the object may escape the hydraulic jack 600a during the ascent process, and when the weight of the object is relatively heavy, the probability of the hydraulic jack 600a escaping during the ascent process is relatively low as well as more This is because a lot of synergism is required.

As described above, the hydraulic jack 600a according to another embodiment of the present invention can make efficient work using the hydraulic jack 600a by varying the lifting force of the lifting piston 612 according to the type of object or the type of work. .

15 is a perspective view showing a mobile lifting device equipped with a hydraulic jack according to another embodiment of the present invention.

Specifically, the mobile lifting device 40 provided with a hydraulic jack according to another embodiment of the present invention includes a lower frame 700, an upper frame 800, a hydraulic jack 600 and a drop prevention unit 2000.

At this time, the lower frame 700, the upper frame 800 and the hydraulic jack 600 constituting the movable lifting device 40 equipped with a hydraulic jack according to another embodiment of the present invention shown in Figure 15 is shown in Figure 1 Since the same as the lower frame 700 and the upper frame 800 constituting the movable lifting device 620 equipped with the hydraulic jack according to an embodiment of the present invention, repeated description will be omitted.

The drop prevention unit 2000 is installed on both sides of the hydraulic jack 600 to support the upper frame 800 when the upper frame 800 falls, thereby preventing the hydraulic jack 600 from being damaged.

In one embodiment, the fall prevention unit 2000 may include an elastic support unit 2100 and a load distribution unit 2200.

Referring to FIG. 16, the elastic support 2100 is installed on the upper side of the load distribution unit 2200 so that the falling object collides with the hydraulic jack 600 and prevents the hydraulic jack 600 from being damaged, the upper frame 800 To support the upper frame 800 by using an elastic force when falling, the support 2110, a plurality of vibration absorbing parts 2120, a plurality of connecting plates 2130, a plurality of extension plates 2140, It may include four rotating parts 2150 and two supporting bars 2160.

The supporting portion 2110 includes a first plate 2111, a second plate 2112, a third plate 2113, and a fourth plate 2114 formed of a “b” type plate.

At this time, the first plate 2111, the second plate 2112, the third plate 2113, and the fourth plate 2114 are arranged to be spaced apart from each other so as to face each other, so as to form a “+” shape as a whole. The vibration absorbing unit 2120 is installed in each spaced space to absorb vibration transmitted to each plate.

The vibration absorbing portion 2120 is installed between each plate of the support portion 2110 and another plate to absorb vibration.

In one embodiment, the vibration absorbing unit 2120 may be formed by means of an elastic material such as a spring or rubber capable of absorbing shock, provided that it is a material that absorbs shock, regardless of its name. This will be possible.

The connection plate 2130 is between the top of the first plate 2111 and the top of the second plate 2112, between the front end of the second plate 2112 and the front end of the third plate 2113, the third plate 2113 ) Between the lower portion and the lower portion of the fourth plate 2114, and between the front end of the fourth plate 2114 and the front end of the first plate 2111, each of which is installed to be rotatable two first plate 2111, The second plate 2112, the third plate 2113, and the fourth plate 2114 are connected and installed in a "+" form.

That is, the connection plate 2130 may not only make the overall appearance by interconnecting the top, bottom, or front end of each plate, but also rotate each connection portion to respond to external vibrations or shocks. By adjusting the connection angle, vibration or shock can be absorbed more efficiently.

That is, when the first plate 2111, the second plate 2112, the third plate 2113, and the fourth plate 2114 are fixedly installed by the connection plate 2130, external vibration or shock to some extent. It will be able to withstand, but if a critical vibration or a critical shock is applied, it will not be able to withstand it, and the connection plate 2130 connected to each plate will be damaged and will not be able to perform its original function.

Accordingly, the connection plate 2130 according to the present invention, by connecting the first plate 2111, the second plate 2112, the third plate 2113 and the fourth plate 2114 to a certain extent possible , It is possible to maintain the fastening to vibration or shock more efficiently than in the case described above.

The extension plate 2140 includes an upper portion of the first plate 2111 (ie, an upper blade) and a shear (ie, shear blade), an upper and shear of the second plate 2112, and a shear of the third plate 2113. The lower portion and the second plate 2114 extend from the lower portion and the front end of the plate to the rotating portion 2150 for each plate in an upward or downward direction.

In one embodiment, the extension plate 2140 may be rotated by being provided with an upper or lower connection to a rotation shaft formed on one side of the rotation part 2150.

In one embodiment, the extension plate 2140, the second upper fastening groove (2111-3) or the second upper fastening groove (2111-5) so that the sliding movement in the vertical direction in the second upper fastening groove (2111-3) -3) Alternatively, a sliding groove 2141 (see FIG. 17) in the vertical direction may be formed in a lower portion connected to the second shear fastening groove 2111-5.

Rotating portion 2150, the upper or lower portions of the two extension plates 2140 formed extending from each plate are connected to each other so as to be rotatable and rotatable, and installed on each inner surface of the support bars 2160 facing each other ( For example, using fastening means such as screw bolts, welding or rivets).

The support bar 2160 is provided with an upper side or a lower side of the pivoting portion 2150, and the support bar 2160 positioned on the upper side is spaced apart from the lower side of the upper frame 800, so that the upper frame 800 is When falling, it is supported, and is formed by a space supported by the rotating part 2150 and spaced apart in the vertical direction, so that each component of the elastic support 2100 is installed.

The elastic support 2100 having the configuration as described above, by supporting the upper frame 800 by using an elastic force when the upper frame 800 falls, the falling object collides with the hydraulic jack 600, the hydraulic jack 600 Prevents damage.

FIG. 17 is a view showing the first plate of FIG. 16.

Referring to FIG. 17, the first plate 2111 includes a plate body 2111-1, two first upper fastening grooves 2111-2, a second upper fastening groove 2111-3, and two first It includes a front end fastening groove (2111-4) and a second front end fastening groove (2111-5).

The plate body 2111-1 is formed of a "b" type plate, and forms two first upper fastening grooves 2111-2 and second upper fastening grooves 2111-3 on the upper wing, and shears Two first front end fastening grooves 2111-4 and second front end fastening grooves 2111-5 are formed on the wings.

The first upper fastening groove 2111-2 is formed on the upper wing of the plate body 211-1 formed in the upper direction and is connected to the front end of the connecting plate 2130 so as to be rotatable.

The second upper fastening groove (2111-3) is formed between the first upper fastening groove (2111-2) and is connected to the lower portion of the extension plate (2140) so as to be rotatable.

The first front end fastening grooves 2111-4 are formed on the front end blades of the plate body 2111-1 formed in the front end direction, and are respectively connected to the upper portion of the connection plate 2130 so as to be rotatable.

The second front end fastening groove 2111-5 is formed between the first front end fastening grooves 2111-4 to connect the lower portion of the extension plate 2140 to be rotatable.

In one embodiment, the extension plate 2140, the second upper fastening groove (2111-3) or the second upper fastening groove (2111-5) so that the sliding movement in the vertical direction in the second upper fastening groove (2111-3) -3) Alternatively, a sliding groove 2141 in the vertical direction may be formed in a lower portion connected to the second shear fastening groove 2111-5.

In addition, the connecting plate 2130 may also form a sliding groove having the same structure as the sliding groove 2141 of the extension plate 2140 described above.

The first plate 2111 having the configuration as described above can be equally applied to the second plate 2112, the third plate 2113, or the fourth plate 2114 that differs only in the installation position. Description of the 2 plate 2112, the 3rd plate 2113, or the 4th plate 2114 will be omitted.

The support bar 2160 of FIG. 16 according to the present invention may be made of a plastic sheet having superior moldability and strong durability than a plastic sheet manufactured using PET resin alone.

The plastic sheet according to the present invention is produced by the following plastic sheet manufacturing method.

Referring to Figure 18, the plastic sheet manufacturing method for producing the plastic sheet of the present invention is polyethylene terephthalate (polyethylene telephthalate, PET) resin 100 parts by weight, polyurethane (polyurethane) dispersant 2-4 parts by weight, polyethylene dioxy cy 0.1 to 0.2 parts by weight of polyethylene dioxythiophene polystyrene sulfonate, polystyrolsulfonic acid, 3 to 5 parts by weight of N-methyl-2-pyrrolidone, tri A first step of preparing a mixed composition by mixing 0.1-0.3 parts by weight of ethyl amine, 42-45 parts by weight of isopropyl alcohol and 50-52 parts by weight of water (S110); A second step of preheating the mixed composition (S120); A third step of removing moisture from the preheated mixed composition (S130); A fourth step of heating the mixed composition from which the moisture is removed (S140); A fifth step of removing foreign substances from the heated mixed composition (S150); A sixth step (S160) of manufacturing a plastic sheet by stretching while cooling the mixed composition from which the foreign matter has been removed; And a seventh step (S170) of drying after applying silicone to the plastic sheet.

In the present invention, various additives are mixed with a conventional PET resin, and a plastic sheet having excellent moldability and durability can be manufactured through preheating, dehumidification, heating and cooling.

The first step (S110), as a mixing step of the raw material, a polyethylene terephthalate (polyethylene telephthalate, PET) resin as a base resin, a polyurethane (polyurethane) dispersant, polyethylene dioxythiophene polystyrene sulfonate (polyethylene dioxythiophene polystyrene sulfonate ), polystyrolsulfonic acid, N-methyl-2-pyrrolidone, triethyl amine, isopropyl alcohol and water It is a step.

PET resin is a basic resin, which has excellent thermal stability and high crystallinity, can be recycled, and can be used in the form of a masterbatch. The polyurethane dispersant serves to improve the miscibility with other components. Polyethylene dioxythiophene polystyrene sulfonate, polystyrolsulfonic acid, N-methyl-2-pyrrolidone and triethyl amine Functions as an antistatic agent. Since the plastic sheet for manufacturing a plastic container is generally an electrical insulator, static electricity is generated by frictional charging, and if severe due to discharge or electric conduction, it may lead to an accident such as explosion or fire. . Isopropyl alcohol functions as an antifogging agent. When the plastic container is manufactured using a plastic sheet, the antifogging agent can suppress water droplet condensation caused by water vapor that may occur when storing fruits and the like.

In one embodiment, the above-described raw materials are polyethylene terephthalate (polyethylene telephthalate, PET) resin 100 parts by weight of polyurethane, polyurethane (polyurethane) dispersant 2-4 parts by weight, polyethylene dioxythiophene polystyrene sulfonate (polyethylene dioxythiophene polystyrene sulfonate ) 0.1 to 0.2 parts by weight, polystyrolsulfonic acid 0.4 to 0.6 parts by weight, N-methyl-2-pyrrolidone 3 to 5 parts by weight, triethyl amine (triethyl) It is preferable to mix 0.1 to 0.3 parts by weight of amine, 42 to 45 parts by weight of isopropyl alcohol and 50 to 52 parts by weight of water. When added outside the above-described range, various problems may occur. In particular, in the case of an antistatic agent, when mixed beyond each range, the surface of the plastic to be produced may be sticky, and sealing and printability may be deteriorated, and in the case of white plastic, yellowing may occur.

In addition, the first step (S110), it is possible to further mix various additional components to the raw materials to enhance the functionality of the plastic sheet.

In one embodiment, the boron-based binder may be further mixed. The boron (B)-based binder is used to bond each component, and the boron-based binder is preferably mixed in 2 to 10 parts by weight with respect to 100 parts by weight of the PET resin. When the content of the boron-based binder is less than 2 parts by weight, raw materials and the like cannot be effectively combined, and when the content of the boron-based binder exceeds 70 parts by weight, it is uneconomical.

In one embodiment, the garlic extract may be further mixed. Garlic extract is a natural adhesive component, and functions as a binder that improves the mixing properties with other components along with the boron-based binder. After the garlic extract is peeled and crushed, 2 to 3 parts by weight of water is added per 1 part by weight of garlic, heated at 80 to 100°C for 5 hours or more, and then the liquid component is extracted and filtered, followed by filtration. It can be prepared by concentrating the liquid component at 55 ~ 60 ℃. The garlic extract is preferably mixed in 5 to 10 parts by weight with respect to 100 parts by weight of the PET resin. When the content of the garlic extract is less than 5 parts by weight, the ingredients may not be properly entangled so that the surface may not be evenly formed when manufacturing the plastic sheet, and when it exceeds 10 parts by weight, the dispersibility and mixing property of each component is rather There is a risk of deterioration.

In one embodiment, apatite powder may be further mixed. The apatite powder functions as a filler, and can maintain the shape of the plastic sheet to improve workability and maintain strength and corrosion resistance. Apatite is an inorganic substance present in the bone. In order to use it as a filler, it is important that the particle size is small, the amount of carbonic acid remaining is high, and the crystallinity is low. Preferably, the size of the apatite granules is 200-400 μm. For this, it is important to go through the sintering process at 500~700℃. When sintering at less than 500°C, there is a disadvantage that the desired size and crystallinity of the granules cannot be obtained, and when sintering above 700°C, the residual amount of the carbonic acid group is low and the crystallinity is too high. It is preferable that the apatite powder is mixed in 20 to 30 parts by weight with respect to 100 parts by weight of the PET resin. When the content of the apatite powder is less than 20 parts by weight, there is a disadvantage that the adhesive strength is lowered, and when it exceeds 30 parts by weight, the impact resistance is weakened.

In one embodiment, cork powder may be further mixed. Cork powder can improve the durability of the plastic sheet together with the apatite powder. Cork powder can be prepared by removing the husk of an oyster tree and then grinding it. It is preferable to use finely pulverized particles filtered through a mesh of 400 mesh or more for mixing property with PET resin. Cork powder is preferably mixed in 15 to 25 parts by weight with respect to 100 parts by weight of PET resin. When the cork powder is less than 15 parts by weight, the degree of improvement in durability is negligible, and when it exceeds 25 parts by weight, voids may be formed inside the plastic during manufacturing, so durability may be deteriorated.

In one embodiment, the lasso extract may be further mixed. The lasso extract not only acts as an antimicrobial agent, but also can suppress the yellowing that can occur on white plastic sheets. Rusx (Rumex crispus) is a plant of the genus Rumex, native to the genus Rudyx. The conch is a perennial plant that grows well in humid places all over the country and uses young shoots for edible purposes in Korean medicine. In oriental medicine, it is called Yangje (방), cystitis, gallbladder disease, bile secretion disorder, spleen disease, skin disease, lymph node disease, etc. It is used as an auxiliary treatment for tumors and cancer. The extract of the conch extracted from the conch has antibacterial and antioxidant effects on various microorganisms, and when used in combination with a small amount of sulfur, it has an excellent effect on itching of the skin. It is reported that saponins, tannins, flavonoids, essential oils, and anthraquinone derivatives such as chrysophanol and emodin are useful components of known sorcerers. After washing the collected small lasso well, dry it in the shade and break it into two parts: the upper part (excluding the roots) and the underground part (the root parts), and shred it. For 80 days (v/v) methanol in extraction solvent for 3 days After immersion, the extract may be filtered through a membrane filter (porosity 0.5 μm) to separate solids, and the methanol extract may be prepared by concentration at 50° C. using a rotary evaporator. It is preferable that the conch extract is mixed in 3 to 8 parts by weight with respect to 100 parts by weight of the PET resin. When the content of the conch extract is less than 3 parts by weight, the antimicrobial activity has a slight anti-yellowing effect, and when it exceeds 8 parts by weight, it is uneconomical.

The second step (S120) is a step of preheating the mixed composition, and the raw materials are stably mixed primarily by applying heat to the mixed raw materials.

The third step (S130) is a dehumidifying step of removing moisture present in the preheated mixed composition, and dehumidification is preferably performed in a temperature range of 150 to 180°C. If it is less than or exceeding the above range, dehumidification may not be sufficiently performed, or it may adversely affect the durability of the plastic.

The fourth step (S140) is a step of heating the mixed composition from which moisture is removed, and after melting the mixed composition, the heating temperature is preferably controlled at 260 to 270°C to maintain.

The fifth step (S150) is a step of removing foreign substances in the heated mixed composition, and may remove a foreign substance that is a problem inside the mixed composition by passing through a screen in a mesh form.

The sixth step (S160) is a step of preparing a plastic sheet by stretching while cooling the mixed composition from which the foreign matter has been removed, and stretching it in two stages using a cooling roll. The primary stretching is made in the longitudinal direction through a cooling roll maintained at 16-17°C, and the secondary stretching is made in the width direction (vertical direction in the longitudinal direction) through a cooling roll maintained at 20-23°C. The reason why the temperature of the secondary stretching is higher than the temperature of the primary stretching is to prevent the moldability of the plastic sheet from being rolled up, thereby improving the durability and formability of the plastic sheet by alternately stretching the longitudinal direction and the width direction. I can do it.

The seventh step (S170) is a step of applying silicone to the plastic sheet and then drying it, and it is possible to obtain an antistatic effect at the same time as finishing by applying the silicone. It is preferable to apply the silicone using a coating solution diluted in a concentration range of 5 to 25%, apply the silicone, and then dry at 160 to 215°C. In addition, it is preferable to mix the above-described anti-fogging agent components in the coating liquid containing silicone to suppress the moisture phenomenon formed inside the manufactured plastic container.

Hereinafter, the configuration of the present invention and its effects will be described in more detail through specific examples and comparative examples. However, this example is intended to illustrate the present invention in more detail, and the scope of the present invention is not limited to these examples.

[Examples and Comparative Examples]

After preparing the mixed composition according to the composition of Table 7, preheating, dehumidification, heating, foreign matter removal, cooling and stretching, and drying steps to prepare a plastic sheet to prepare examples and comparative examples. Commercially available materials were used for each material, and in the case of garlic extracts and conch extracts, they were prepared as described in the detailed description of the invention.

[Experimental Example 1]

The compositions of Examples 1 to 3 and Comparative Examples were stretched a second time to prepare a plastic sheet having a thickness of 10 mm, and the uniformity of the sheet surface was measured and described in Table 8 below. At this time, the primary stretching was 16°C, and the secondary stretching was 21°C. Uniformity was measured using a laser sensor (N2 laser, oscillation wavelength 337.1 nm, UDHO Laser. LTD., Japan), and 30 points were randomly selected to measure their surface roughness (standard deviation was used). , ㅁ0.3 or less was evaluated as uniform, and ㅁ0.3 or more was evaluated as non-uniform). At this time, Examples 1 to 3 were stretched in the longitudinal direction, and then stretched in the width direction, and the comparative example was stretched only in the longitudinal direction.

As shown in Table 8, in the case of Examples 1 to 3, all of the uniformity was better than the comparative example.

[Experimental Example 2: Torsion test]

After the composition of Examples 1 to 3 and Comparative Examples were drawn twice, a plastic sheet having a thickness of 2 mm was produced, and then molded to prepare 100 plastic products, and the completeness was evaluated, and the results are shown in Table 9 below. At this time, Examples 1 to 3 were stretched in the longitudinal direction, and then stretched in the width direction, and the comparative example was stretched only in the longitudinal direction.

As shown in Table 9, in the case of Examples 1 to 3, 90% or more of the normal product could be produced, but the comparative example had a relatively high defect rate.

[Experimental Example 3: Yellowing Test]

After the composition of Examples 1 and 3 was stretched a second time, a plastic sheet having a thickness of 2 mm was prepared, and then molded to prepare 100 white plastic products one by one, and after 10 months, discoloration was visually observed, and this is shown in Table 10 below. Did. At this time, what was changed to yellow was evaluated as defective.

As shown in Table 10, in the case of Example 3, it was confirmed that almost all products were not discolored. On the other hand, Example 1 obtained good results, but the discoloration rate was relatively higher than Example 3.

[Experimental Example 4: Anti-fog test]

After the composition of Comparative Example and Example 3 was stretched a second time, a plastic sheet having a thickness of 2 mm was produced, and then molded to prepare 100 white plastic products, and after storing spinach therein, the inside was observed with the naked eye after 1 day. It was shown in Table 11 below.

As shown in Table 11, in the case of Example 3, almost no water droplets were formed, but in the Comparative Example, it was confirmed that water droplets of the degree to be identified with the naked eye were formed.

The support bar 2160 made of a plastic sheet made of the above-described quality may have improved moldability and improved durability, compared to the case of using PET resin alone.

Accordingly, when the support bar 2160 is worn or damaged due to continuous vibration, it is possible to ensure continuous use of the device by easily re-manufacturing and replacing the plastic sheet.

Referring to FIG. 19, the load distribution part 2200 of FIG. 15 is installed under the support part 2230 supporting the lower side of the elastic support part 2100, and the ball housing 2210 provided with a hollow part 2215 therein ), having a plurality of small balls (2220) for support placed in the hollow portion 2215, and fixed bolts (2246) extending upwardly from the center of the ground plane (2245) and the ground plane (2245) Ground ball (2240).

The load dispersing unit 2200 may distribute and partially absorb the load applied from the outside, thereby transmitting a load q smaller than the load P applied from the outside.

The load distribution unit 2200 distributes the load applied from the outside of the ball housing 2210 inside the ball housing 2210, and finally transmits a load smaller than the load applied from the outside by the ball housing 2210. . The load applied from the outside of the ball housing 2210 is distributed by a plurality of supporting small balls 2220 and ground balls 2240 positioned in the hollow portion 2215, and a part of the load is part of the ball housing 2210. Dispersed while pressing the inner wall, the rest of the load can be transferred to the outside of the ball housing 2210.

The ball housing 2210 may be fixedly installed on a surface using concrete or the like, and a hollow portion 2215 in which a plurality of small balls 2220 for support and a ground ball 2240 are accommodated may be provided therein. .

Ball housing 2210 is a material having a certain strength, such as iron, concrete, wood, plastic, etc. in order to support the load distributed by the action between the plurality of small balls 2220 and the ground ball 2240 disposed therein It can be made of.

The shape of the ball housing 2210 may be formed in various shapes such as a polyhedron, a spherical shape, etc. However, the hollow portion 2215 may be formed in a spherical shape corresponding to the shape of the ground ball 2240.

The plurality of small balls 2220 for support and the ground balls 2240 may be accommodated in the hollow portion 2215, and may be formed in a spherical shape.

The plurality of small balls for support 2220 may be accommodated by being regularly arranged to contact each other along the outer circumferential surface of the hollow portion 2215. The ground ball 2240 may be accommodated in the hollow portion 2215 in a state of being placed on the plurality of small balls 2220 for support and supported in a point-contact state to the plurality of small balls 2220 for support.

As described above, the plurality of small balls for support 2220 and the ground ball 2240 are regularly arranged so that the outer circumferences contact each other, and the external load is caused by the contact point between the plurality of small balls for support 2220 and the ground ball 2240. Distribution of the external load may occur while pressing the inner wall of the hollow portion 2215, that is, the ball housing 2210, which is transmitted and finally positioned at the outermost side. At this time, in the present embodiment, a plurality of small balls for support is arranged by regularly arranging the plurality of small balls for support 2220 and the ground ball 2240 is placed on the plurality of small balls for support 2220. By increasing the number of contact points between the 2220 and the ground ball 2240 and regularizing the load transfer, it is possible to increase the load transfer effect between each other. In addition, the ground ball 2240 is supported in a point-contact state by a plurality of small balls 2220 for support, thereby minimizing wear.

The plurality of small balls for support 2220 and the ground ball 2240 may be made of a material having strength capable of withstanding the load due to the contact point between each other, for example, iron, concrete, wood, plastic, etc. have.

Meanwhile, the ground ball 2240 may have a ground plane 2245 on the top. A fixing bolt 2246 is installed at a central portion of the ground plane 2245 to be inserted under the support 2230 so that the support 2230 is fixed to the ground ball 2240.

At this time, the fixing bolt (2246), without forming a separate protrusion on the outside, but may be formed in a civil pattern, by forming a thread along the outer surface (i.e., a form such as a pistol), the lower side of the support 2230 It would be desirable to make the tightening more strongly.

As such, the load balancer 2200 is installed under the elastic support 2100 to support the elastic support 2100, thereby guaranteeing the stability of the upper frame 800 as described above by the elastic support 2100. can do.

The above-described embodiments are for illustration only, and those having ordinary knowledge in the technical field to which the above-described embodiments belong can easily be modified into other specific forms without changing the technical idea or essential characteristics of the above-described embodiments. You will understand. Therefore, it should be understood that the above-described embodiments are illustrative in all respects and not restrictive. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as distributed may be implemented in a combined form.

The scope to be protected through the present specification is indicated by the claims, which will be described later, rather than the detailed description, and should be interpreted to include all modified or modified forms derived from the meaning and scope of the claims and equivalent concepts thereof. .

10: fire fighting enclosure 100: enclosure
110: case 111: through hole
112: housing 120: door
121: door body 122: pivot hinge
123: lock hinge 124: lock hanger
130: outlet 131: cover
140: earth leakage breaker 200: stand
210: vertical bar 220: horizontal bar
230: support bar 300: shock absorber
310: support portion 320: vibration absorbing portion
330: connection plate 340: extension plate
350: rotating part 360: support bar

Claims (2)

The enclosure that forms the interior space;
Included, fire fighting enclosure.
According to claim 1,
The housing is provided with a moving means on the lower surface,
A lower frame in which at least one pillar having a variable length is disposed on an upper surface; An upper frame supported by the at least one pillar and disposed parallel to the lower frame; And a hydraulic jack installed between the lower frame and the upper frame, and lifting and lowering the upper frame using an external force provided by a user in order to elevate an object seated on the upper frame. Supported by,
The hydraulic jack, the working fluid is stored, the inner cylinder and the lifting piston is disposed main body; It is installed on the outside of the main body to communicate with the main body to maintain a closed state, a pressure piston is formed therein, and the suction fluid is suctioned as the pressure piston descends after the pressure fluid rises as the pressure piston rises An outer cylinder that provides a working fluid to the inner cylinder; A pressure lever connected to the pressure piston disposed inside the external cylinder to transmit external force provided by a user to the pressure piston; And a release valve for releasing the pressure of the inner cylinder according to a user's operation so that the working fluid flowing into the inner cylinder is recovered to the body.
The outer cylinder is provided in plural, and the plurality of outer sealers includes a first outer cylinder formed along a central axis coaxial with the pressure lever and at least one second outer cylinder disposed along a circumference of the diameter of the first outer cylinder. Including, the sum of the diameters of the first cylinder and the at least one second outer cylinder is less than 1/3 of the diameter of the inner cylinder,
The first outer cylinder and the at least one second outer cylinder are connected to the main body through an inlet pipe for introducing a working fluid stored in the main body into the inside,
The hydraulic jack further includes control means for selectively opening and closing a plurality of inflow pipes formed in each of the first outer cylinder and the at least one second outer cylinder to vary the lifting force of the pressurized piston.

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