KR102356680B1 - Sliding gate device with enhanced ease of operation - Google Patents

Abstract

A sliding gate apparatus with enhanced operation convenience according to the present invention comprises: a pair of frames disposed to be spaced at a predetermined distance in a back and forth direction and holding gates; the gates opening and closing at least a portion of the inner space of the frames while ascending and descending in the height direction of the frames by operation of a user; and a driving assembly installed on the upper side of the frames and including a pulley moving chains connected to the upper ends of the gates in a back and forth direction according to the elevation of the gates, such that a rear side gate is closed according to the movement of the chains if a front side gate is opened. According to the sliding gate apparatus with enhanced operation convenience according to the present invention, the gates installed at the front side and the rear side in a comparatively narrow space can be concurrently operated with efficiency and simplicity.

Description

Sliding gate device with enhanced ease of operation

The present invention is a sliding gate device with enhanced ease of operation, and more specifically, it is installed in a simple and slim structure at the front and rear of a relatively narrow space, respectively, so that the front and rear opening and closing operations can be conveniently implemented with one operation of the operator. It relates to a sliding gate device.

In most cases, the work space such as a new space of a building or a cargo storage space for transporting or moving cargo has a two-story structure such as the second and third floors so that the overall work space can be wide while securing a small installation area.

When moving cargo or materials from a low position to a high position or vice versa in such a work space, the cargo or materials are loaded and moved on a lifting means such as a ladder or a lift.

At this time, for the safety of workers, it is common that a handrail is installed on a high floor, but in a situation where the shelf moves cargo or materials, it becomes a kind of barrier and impairs the efficiency of work.

In addition, in addition to the work space that necessarily requires a handrail, a structure in which two doors can be conveniently installed was not presented when a door was installed at the front and rear of a specific area, respectively, to open and close them at the same time.

In order to prevent this problem, the tilting gate device for opening and closing the open area of the work handrail, which is the applicant's patent, Korean Patent No. 2188092, is installed at the end of the work surface, the work handrail including the open area; a tilting gate comprising a gate frame for opening and closing an open area of the working handrail, a base frame bent at an end of the gate frame, and a pair of connecting frames connecting side portions of the gate frame and the base frame, respectively; a pair of stands in contact with each of the connection frames in a state of standing on one side of the working surface; a hinge installed between the top of the stand and one side of the connection frame; a hydraulic cylinder connected to one side of the stand and the connecting frame and rotating the tilting gate around the hinge by an expansion and contraction action; Including; a controller for controlling the driving of the hydraulic cylinder; it is disclosed that the gate can conveniently open/close control while serving as a handrail.

Of course, the advantages of this prior art are acknowledged, but the rotation path for opening and closing the front and rear tilting gates is large, so it cannot be installed in a narrower space. It is more inconvenient and more complicated than opening and closing the gate.

Therefore, there is a need to develop a new and advanced sliding gate device that enhances the convenience of opening and closing the gates located on the front and rear sides at the same time even by a simple manual operation of the operator in a narrow space.

The present invention was devised to overcome the problems of the above technology, and by installing gates in each of the front and rear sides of a relatively narrow working space, the front and rear of the corresponding space are opened and closed, but the opening of the front gate and the closing of the rear gate are performed with one simple operation. Its main object is to provide a sliding gate device capable of performing.

Another object of the present invention is to provide an additional configuration that ensures structural stability and durability of the sliding gate device.

Another object of the present invention is to implement the gate as a plurality of foldable sub-gates to effectively enhance the opening and closing performance of the gate without increasing the height of the frame too much.

It is a further object of the present invention to provide stability and anti-friction function of the chain connecting the front gate and the rear gate.

In order to achieve the above object, according to the present invention, there is provided a sliding gate device with enhanced ease of operation, which is arranged as a pair at a predetermined distance along the front-rear direction, and includes: a frame for accommodating the gate; a gate that opens and closes at least a portion of an inner space of the frame while ascending and descending along a height direction of the frame by a user's manipulation; A driving assembly installed on the upper side of the frame and including a pulley that moves the chain connected to the upper end of the gate in the front-rear direction according to the elevation of the gate; including; It is characterized in that the gate on the rear side is closed accordingly.

In addition, the gate includes a plurality of sub-gates disposed along a height direction of the vertical frame and sequentially folded while ascending and descending along a rail of the vertical frame, and the driving assembly includes: It characterized in that it comprises a plurality of chains connected to the upper end of each of the sub-gates coincidentally, and a pulley installed in the same number as the plurality of chains.

In addition, on the upper side of the frame on the front side and the rear side, guides extending along the front and rear extension directions of the chain and contacting the bottom surface of the chain are installed.

According to the sliding gate device with enhanced convenience of operation according to the present invention,

1) It has the advantage of being able to efficiently and conveniently simultaneously operate the gates installed in the front and rear of a relatively narrow space,

2) As a plurality of sub-gates are folded, the gates can be raised and lowered, allowing efficient use of space.

3) In addition to presenting various detailed structures that can enhance the durability of the sliding gate device,

4) It has the effect of guaranteeing the stability of the chain and the durability of the guide supporting the chain by friction.

1 is a perspective view showing a combination structure of a frame and a gate of the present invention.
Figure 2 is a perspective view showing the overall structure of the sliding gate device of the present invention.
Figure 3 is a perspective view showing a state in which the front gate is closed in a state in which the front gate and the rear gate of the present invention are interlocked.
4 is a perspective view illustrating a process in which the rear gate is closed while the front gate is opened in FIG. 2 .
5 is a partially enlarged perspective view showing a structure in which the gate of the present invention is composed of a plurality of sub-gates.
Figure 6 is a partially enlarged perspective view showing the sub-bar and the support rod and the support installed on the upper side of the frame.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The accompanying drawings are not drawn to scale, and like reference numbers in each drawing refer to like elements.

1 is a perspective view showing a combined structure of a frame and a gate according to the present invention, and FIG. 2 is a perspective view showing the overall structure of the sliding gate device of the present invention.

As can be seen from FIGS. 1 and 2 , the sliding gate device of the present invention includes a front structure and a rear structure installed as a pair in a state in which they are interlocked with each other at regular intervals in the front and rear directions in a specific space inside the building. do it by default

In this case, it goes without saying that the sliding gate device of the present invention is not necessarily installed only in the interior space of a building, but may be installed in various places such as an outdoor building structure, an outdoor delivery/transport location, and the like.

The present invention is based on being installed to open and close the front area and the rear area of the aforementioned specific space.

Here, in a conventional structure, that is, in the gate 100 made of a rectangular parallelepiped shape, two surfaces having a large area are the front and rear surfaces. . Correspondingly, the width (left and right width) direction of the gate 100 is referred to as a 'left and right direction'. The definition of this direction is equally applied to not only the gate 100 but also various other configurations.

In addition, the gate 100 installed in each of the front region and the rear region and its auxiliary configuration have the same detailed structure only with a different installation location. It will be explained as including several components to be described later under the broad classification of and rear structure.

For example, the frame 10 is composed of a front frame and a rear frame, and since the front frame and the rear frame have the same structure, it is defined as a pair of frames while avoiding repeated explanation, but in detail, the name of the front frame and the rear frame It means that the description is differentiated only with , and that both the front frame and the rear frame are described with the same reference numeral '10'.

That is, the front structure and the rear structure of the present invention each include a frame 10 , a gate 100 , and a driving assembly 20 . In other words, the frame 10 , the gate 100 , and the driving assembly 20 are all arranged in a pair at the front and rear sides.

The frame 10 of the present invention is a frame structure having a hollow in which the gate 100 to be described later is installed, and as can be seen from FIGS. 1 and 2, a pair ( That is, the front frame and the rear frame) are arranged.

This frame 10 serves as a door frame for accommodating the so-called door, and has a structure for accommodating the gate 100, for example, a horizontal frame in the left and right direction and a vertical frame 11 standing in a height direction perpendicular to it. ) can be composed of

These frames may be independently arranged in a specific space, but are supported around or between existing structures such as posts, H-beams, and various support frames that are pre-installed in work spaces for delivering/transporting cargo or loads, work spaces for building buildings, etc. It is also possible to install in the state of being.

Therefore, when the frame 10 is supported/connected to the existing structure and installed, the horizontal frame does not necessarily need to be installed because the existing structure takes over the role of the horizontal frame, but provides a path for elevating the gate 100 The vertical frame 11 is included as an essential component in the present invention.

Specifically, the vertical frame 11 is provided with a rail capable of sliding and moving the gate 100 in a state of standing in a pair at a distance corresponding to the width (left and right width) of the gate 100 . Through this, it is possible to ascend or descend along the height direction of the vertical frame 11 in a state in which the gate 100 is coupled to the rail.

Additionally, it is possible that the front vertical frame (front side vertical frame) 11 and the rear vertical frame (rear side vertical frame) 11 are interconnected by a plurality of connecting bars 12 .

That is, although the vertical frame 11 can be disposed using an existing structure, a plurality of connecting bars 12 inclined between the front/rear vertical frames 11 to increase the bonding force between the vertical frames 11 of the present invention. ) is preferable.

This connecting bar 12 ensures the durability of the frame 10 of the present invention to prevent the phenomenon that the front/rear vertical frame 11 unnecessarily shakes or flows when the front/rear gate 100 is elevating. can do.

The gate 100 of the present invention is accommodated in the inner space (hollow) of the frame 10, and provides a structure and function for opening and closing a space partially or entirely surrounded by the frame 10 like a known door while ascending and descending in the vertical direction. do.

In this case, the gate 100 may not occupy the entire internal space of the frame 10 but may occupy only a portion of the space, and may be formed of a single structure as well as a plurality of sub-gates 110 as will be described later.

In addition, the gate 10 may have a closed structure due to a wall, but it is also possible to secure visibility by installing a mesh in the inner space surrounded by the frame forming the outer periphery of the gate.

In addition, a handle may be mounted on one side (lower side) of the gate 100 in order to ensure easy gripability of the operator.

In particular, the gate 100 of the present invention provides a function of opening and closing at least a portion of the internal space of the frame 10 while ascending and descending along the height direction of the frame 10 by the driving assembly 20 to be described later, and in particular, the front When the front gate 100 accommodated in the frame 10 and the rear gate 100 accommodated in the rear frame 10 are connected to each driving assembly 20 and the front gate 100 is opened, the rear gate 100 is closed and the front When the gate 100 is closed, the rear gate 100 takes an open structure.

The driving assembly 20 of the present invention is installed on the upper side of the frame 10 in order to implement the interlocking opening/closing function of the pair of gates 100 described above, and a chain ( 21) is connected and this chain 21 is extended to the upper side of the frame 10, and pulleys (front pulley, rear pulley) are installed on the upper side of the front frame 10 and the rear frame 10, respectively. 22) takes a structure in which the chain 21 can stably move in the front-rear direction through the rotation.

Each of the front structure and the rear structure including the frame 10 , the gate 100 , and the driving assembly 20 has the same structure as well as securing a stable balance between them, that is, preventing the problem of weight shifting to either side In order to do this, it is preferable that the front gate 100 and the rear gate 100 have the same weight.

The function and operation of the sliding gate device of the present invention based on this structure will be described as follows.

3 is a perspective view illustrating a state in which the front gate is closed in a state in which the front gate and the rear gate of the present invention are interlocked, and FIG. 4 is a perspective view illustrating a process in which the rear gate is closed while the front gate is opened in FIG. 2 .

3, when the front gate 100 is closed, but the rear gate 100 is open, when the operator pushes up the front gate 100 by hand, the front gate 100 moves in the height direction of the frame 10. It rises (specifically, it rises by sliding along the rail of the vertical frame), and the front gate 100 and the rear gate 100 are connected via the chain 21 so that the chain ( 21) moves backwards. At this time, since the chain 21 takes a state connected to the pulley 22 , it can be stably guided backwards without unnecessary play or twisting due to the rotation of the pulley 22 .

Due to the chain 21 moved backward, the rear gate 100 starts to descend as shown in FIG. 4 , and when the front gate 100 is fully opened through this process, the rear gate 100 is completely sealed. Of course, the process of completely sealing the front gate 100 can be inferred to the opposite.

The sliding movement (elevation) of the front/rear gate 100 provides a characteristic that can easily and conveniently drive the two gates 100 with one operation of the operator.

In addition, the gate mentioned in the prior art is also the same in that two gates can be driven in a single operation process, but the present invention can be conveniently driven by a user's simple operation without a special power device requiring energy. Of course, since the front/rear structure has a slim structure, it has the advantage of being widely applicable to a narrow space.

In addition, when moving the load on the rear gate 100 side to the moving space on the front gate 100 side made of a cliff structure, the rear gate 100 is raised and the front gate 100 is sealed to prevent the risk of falling, etc. After stably moving the load, when the load is moved to the front gate 100, the front gate 100 is opened to ensure the stability of moving the load downstairs or downward through a separate elevating device. have.

5 is a partially enlarged perspective view showing a structure in which the gate of the present invention is composed of a plurality of sub-gates.

Referring to FIGS. 5 and 1 , it can be seen that the gate 100 is formed of a plurality of structures instead of a single unit body, and the plurality of structures is referred to as a sub-gate 110 .

5 shows that the sub-gate 110 is composed of three sheets, but the number is not limited thereto, and the sub-gate 110 may be composed of two, four, or the like.

The sub-gate 110 is disposed along the height direction of the vertical frame 11 and has a structure that is sequentially folded or unfolded while ascending and descending along the rail of the vertical frame 11 .

For example, when the sub-gate 110 is composed of the first, second, and third sub-gates 111, 112, and 113 from the top to the bottom, the third sub-gate 113 located at the bottom rises first and then the second sub-gate 113 by the operator's operation. It meets the sub-gate 112 and rises together with the second sub-gate 112 , and again the first sub-gate 111 and the second and third sub-gates 112 and 113 meet to finally meet the first, second, and third sub-gates 111 , 112 and 113 . ) rises when they are gathered together.

At this time, the gathering of the second and third sub-gates 112 and 113 together is expressed as folding in the present invention, and when the gate 10 is raised, the third, second, and first sub-gates 113, 112, and 111 are sequentially folded in order.

The foldable structure of the first to third sub-gates 111, 112, and 113 can be applied to various well-known structures such as blind curtains or roll screens. The gates 111, 112, and 113 are arranged in three so that they can move, respectively, and the chain 21 and pulley 22 in charge of each rail are also arranged in three, and then the first, second, and second sub gates 111, 112 and the second and third sub gates are also arranged. By installing a separate sliding rail at the joint portion between 112 and 113, one end of each sub-gate 110 follows the rail of the vertical frame 11, and the other end follows the sliding rail of another adjacent sub-gate 110. A structure that can be lifted and lowered can be applied.

At this time, in order to prevent the phenomenon in which the second and third sub-gates 112 and 113 fall into place due to gravity when the first, second, and third sub-gates 111, 112, and 113 rise, although not shown in the drawings, the first, second, 3 A known stopper capable of fixing the elevated positions of the sub gates 111 , 112 , and 113 , that is, a fixing pin inserted into the rail by pressing from the front of the sub gate 110 to block the elevation of the sub gate 110 . It is possible to mount a stopper having a structure similar to that of

Such a stopper may be installed for each sub-gate 110 , so that the gate 100 may be fixed at a corresponding position without a drop phenomenon even in a state in which the gate 100 is not fully opened/closed and is mid-open/closed.

If the gate 100 is designed in a foldable structure of the sub-gate 110 in which the gate 100 is divided into several stages, the vertical frame 11 itself must be considerably high in order to elevate the gate 100 made of a single body, and the installation and space burden problems are eliminated. While reducing, it is possible to manufacture the frame 10 with a relatively low and slim structure, as well as provide the characteristics of easily implementing a semi-open/semi-closed state of the gate 100 .

6 is a partially enlarged perspective view illustrating a sub-bar and a support rod and a support installed on the upper side of the frame.

Referring to FIG. 6 , the upper side of the front side frame (front frame) 10 and the rear side frame (rear frame) 10 extends along the front-rear direction to connect the front gate 100 and the rear gate 100 . That is, it can be seen that the guide 30 extending along the chain 21 direction and contacting the bottom surface of the chain 21 is installed.

This guide 30 prevents sagging of the chain 21 and provides a function to prevent the problem that the opposite gate 110 does not work due to sagging of the chain, as well as moving the front/rear frame 10 in the front-rear direction. It is possible to combine the function of reinforcing the durability of the frame 10 by appropriately responding to the external force applied to the side of the frame 10 by connection.

This guide 30 does not always contact the lower side of the chain 21, but may be installed in a position that can only be contacted when the chain 21 is struck over a certain level, It is also possible that a chain groove (not shown) capable of accommodating the chain 21 while reducing friction is formed along the extending direction of the guide 30 on the upper surface of the guide 30 .

In addition, the guide 30 can be designed in various ways to reduce the movement speed of the chain 21 by applying friction to the chain 21 or reduce friction with the chain 21 to ensure the mobility of the chain 21 . , In the following, a functional coating layer (ie, anti-friction layer) is formed on the upper surface of the guide 30 to reduce friction with the chain 21 to provide a composition that guarantees the mobility of the chain 21 .

Also, as can be seen from FIG. 6 , the sub bar 40 is installed on the upper side of the frame 10 in the left and right direction of the frame 10 so as to be in contact with the bottom surface of the pulley 22 . It is possible.

This sub-bar 40 provides a supporting force for supporting the pulley 22 to ensure the durability of the pulley 22 . Although not shown in the drawing, the pulley 22 is not shown in the drawing to ensure rotation of the pulley 22 . A rotating member having a rotatable disc-shaped structure such as a bearing or a gear may be installed in a portion in contact with (22).

This rotating member can ensure the rotatability of the pulley 22 by rotating the rotating member also together with the rotation of the pulley 22. As in the guide 30 mentioned above, the rotational speed of the pulley 22 is reduced. Alternatively, it is possible to assist any one of stability or drivability with respect to rotation of the pulley 22 by additionally presenting a structure capable of reducing friction.

Furthermore, it is possible that the support bar 50 and the support 60 are additionally installed above the sub bar 40 .

First, the rail 21 and the pulley 22 are respectively installed on the left and right sides of the frame 10 to balance the frame 10 .

In this state, the support bar 50 extending along the left and right direction of the frame 10 through the center of each of the left and right pair of pulleys 22 may be installed on the upper side of the sub bar 40 .

This support bar 50 can also be installed as the front support bar 50 and the rear support bar 50, respectively, similarly to the configuration described above.

The support 60 is a structure installed to support the support bars 50 in the central region of the front support bars 50 and the rear support bars 50, and extends in a direction perpendicular to each support bar 50, that is, in the front-rear direction. take the structure

The support rod 50 serves as a pulley shaft connected to the center of the pair of left and right pulleys 22 and provides a function of balancing the height and balance of the left and right pulleys 22 .

That is, it is possible to prevent a phenomenon in which the speed or inclination is biased to either side of the left or right when the gate 100 is raised or lowered, and as a result, it can serve to assist the stable driving of the gate 100 .

In addition, the support 60 extends in the vertical direction to the support bar 50 while passing through the center of the support bar 50, that is, the front support bar 50 and the rear support bar 50 to ensure the overall durability of the frame 10. It supports the support rod 50 and can pursue structural stability.

As mentioned briefly above, the guide 30 in contact with the chain 21 generates excessive friction or frictional heat due to the movement of the chain 21 on its upper surface to improve the durability of the guide 30 as well as the chain 21 . It is possible for the anti-friction layer to be coated in order to prevent the problem of hindering.

This anti-friction layer can be released in a coated state on the upper surface of the guide 30 when the guide 30 is initially manufactured, as well as stored in a separate spray and periodically sprayed onto the upper surface of the guide 30 for coating treatment. It is also possible

Specifically, the anti-friction layer may include hydroxyl terminated polybutadiene (HTPB) and sodium dodecyl sulfate (SDS).

Hydroxyl terminated polybutadiene (HTPB), that is, dehydrated butadiene, is generally used as a solid fuel for military weapons. SDS having a surface active function provides a function of expressing sliding performance on the upper surface of the guide 30 while easily mixing.

In addition, basic sliding performance is expressed by the miscibility of HTPB and SDS, and as a result, friction with the chain 21 is reduced, and when a basic composition such as an epoxy resin is included in the anti-friction layer, the crosslinking density of the epoxy resin is affected. HTPB may have a function of assisting in improving its mechanical properties.

SDS (sodium dodecyl sulfate) is a surfactant that not only guarantees the function of weakening the frictional force of the anti-friction layer prepared by properly mixing with the above-mentioned HTPB, but also improves the compatibility with other materials to be mixed through the steps to be described later. to provide.

Additionally, the above-described anti-friction layer may be manufactured through a first material preparation step, a second material production step, a third material production step, a fourth material production step, and a completion step together with an additional material.

First, the first material preparation step is a process of preparing the first material by mixing 85 to 95 parts by weight of water and 1 to 5 parts by weight of sodium dodecyl sulfate (SDS).

That is, the first material is a process of preparing a solvent for further mixing with HTPB by mixing SDS having surface active properties with water.

Next, in the second material preparation step, 70 to 85 parts by weight of the first material and 5 to 10 parts by weight of HTPB (hydroxyl terminated polybutadiene) are mixed and stirred at 60 to 80 ° C. at a speed of 400 to 600 rpm to prepare a second material. It is a process.

Here, HTPB serves as the main material of the anti-friction layer as mentioned above and provides a basic property of weakening the frictional force generated by contact with the chain 21 through appropriate mixing with the first material, and methacrylic acid, which will be described later Materials such as methyl methacrylate can provide a core-like structure to properly enclose this HTPB or a mixture of HTPB and SDS.

In the third material preparation step, after blocking light, 90 to 95 parts by weight of the second material, 1 to 5 parts by weight of 1-dodecanethiol, 1 to 5 parts by weight of divinylbenzene, This is a process of preparing a third material by mixing 1 to 5 parts by weight of potassium persulfate and then mixing in a nitrogen atmosphere for 30 to 80 minutes.

Here, 1-dodecanethiol serves as a molecular weight modifier for controlling the molecular weight of the anti-friction layer, and divinyl benzine serves as a cross-linking agent for stable preparation of the anti-friction layer. In addition, potassium persulfate serves as an initiator for initiating a reaction in the preparation of the anti-friction layer.

Next, in the fourth material preparation step, 1 to 10 parts by weight of methyl methacrylate is injected into 85 to 90 parts by weight of the third material at a rate of 200 to 300 μl/mim for 1 to 2 hours, and then 30 to 80 parts by weight The process of preparing the fourth material by stirring for minutes.

Here, methyl methacrylate is a component of the shell or film surrounding HTPB (or a mixed material of HTPB and SDS) serving as the aforementioned core, and friction of HTPB or a mixed material of HTPB and SDS It can assist so that the prevention function is maintained for a relatively long time without being lost within a short period of time.

Finally, the completion step is a process of completing the anti-friction layer by mixing 50 to 70 parts by weight of the fourth material and 10 to 25 parts by weight of a 1wt% aqueous potassium hydroxide solution for 20 to 40 minutes, filtering, and obtaining and washing the residue, 1 wt% means a concentration of 1 g of potassium hydroxide dissolved in 100 g of an aqueous potassium hydroxide solution as a mass percentage concentration.

At this time, the aqueous potassium hydroxide solution serves as a reaction terminator for terminating the reaction of the anti-friction layer, and the anti-friction layer may be completed through mixing with the aqueous calcium hydroxide solution.

The anti-friction layer manufactured through this process basically provides a basic function of alleviating friction or frictional heat generated when the chain 21 and the guide 30 come in contact, as well as providing a mechanical strength (within the resistance of the upper surface of the guide 30). impact resistance, and abrasion resistance) can help to further improve, and as a result, irregular cracks or scratches occur due to friction between the guide 30 and the chain 21, which causes the guide 30 to It is possible to effectively prevent the increase of the friction coefficient.

As described so far, the configuration and operation of the sliding gate device with enhanced ease of operation according to the present invention are expressed in the above description and drawings, but these are merely examples and the spirit of the present invention is not limited to the above description and drawings. It goes without saying that various changes and modifications can be made without departing from the technical spirit of the present invention.

10: frame 11: vertical frame
12: connecting bar 20: drive assembly
21: chain 22: pulley
30: guide 40: serve bar
50: support bar 60: support bar
100: gate 110: sub gate
111: first sub-gate 112: second sub-gate
113: third sub gate

Claims (9)

As a sliding gate device with enhanced ease of operation,
As arranged in a pair at a certain distance along the front and rear direction,
a frame accommodating the gate;
a gate that opens and closes at least a portion of an inner space of the frame while ascending and descending along a height direction of the frame by a user's manipulation;
A driving assembly installed on the upper side of the frame and including a pulley for moving a chain connected to the upper end of the gate in the front-rear direction according to the elevation of the gate;
When the front gate is opened, the sliding gate device, characterized in that the rear gate is closed according to the movement of the chain. The method of claim 1,
The frame is
Sliding gate device, characterized in that it comprises a vertical frame installed with rails that stand up as a pair at a distance corresponding to the left and right widths of the gate and allow the gate to slide and move. 3. The method of claim 2,
The front side of the vertical frame and the rear side of the vertical frame,
A sliding gate device, characterized in that connected by a plurality of connecting bars. 3. The method of claim 2,
The gate is
It includes a plurality of sub-gates disposed along the height direction of the vertical frame and sequentially folded while ascending and descending along the rail of the vertical frame,
the drive assembly,
A sliding gate device, comprising: a plurality of chains connected to an upper end of each of the sub-gates to match the number of the sub-gates; and a pulley installed in the same number as the plurality of chains. The method of claim 1,
On the upper side of the frame on the front side and the frame on the rear side,
A sliding gate device, characterized in that a guide extending along the front and rear extension direction of the chain and contacting the bottom surface of the chain is installed. The method of claim 1,
On the upper side of the frame,
A sliding gate device, characterized in that sub-bars extending along the left and right directions of the frame are installed so as to be in contact with the bottom surface of the pulley. 7. The method of claim 6,
The rail and pulley,
Installed in a pair on the left and right sides of the frame,
On the upper side of the sub-bar,
a support bar extending along the left and right directions of the frame through the center of the left and right pulleys;
A sliding gate device, characterized in that a support extending in the front-rear direction is installed to support the center-side bottom surface of the front-side support bar and the rear-side support bar. 6. The method of claim 5,
On the upper surface in contact with the lower surface of the rail in the guide,
A sliding gate device, characterized in that it is coated with an anti-friction layer including hydroxyl terminated polybutadiene (HTPB) and sodium dodecyl sulfate (SDS). 9. The method of claim 8,
The anti-friction layer,
A first material preparation step of preparing a first material by mixing 85 to 95 parts by weight of water and 1 to 5 parts by weight of sodium dodecyl sulfate (SDS);
70 to 85 parts by weight of the first material and 5 to 10 parts by weight of hydroxyl terminated polybutadiene (HTPB) are mixed and stirred at 60 to 80° C. at a speed of 400 to 600 rpm to prepare a second material;
After blocking the light, 90 to 95 parts by weight of the second material, 1 to 5 parts by weight of 1-dodecanethiol, 1 to 5 parts by weight of divinylbenzene, potassium persulfate (potassium) persulfate) 1 to 5 parts by weight and then mixed in a nitrogen atmosphere for 30 to 80 minutes to prepare a third material, a third material preparation step;
After injecting 1 to 10 parts by weight of methyl methacrylate into 85 to 90 parts by weight of the third material at a rate of 200 to 300 μl/mim for 1 to 2 hours, stirring for 30 to 80 minutes, the fourth material To prepare, a fourth material preparation step;
50 to 70 parts by weight of the fourth material and 10 to 25 parts by weight of a 1wt% aqueous potassium hydroxide solution are mixed for 20 to 40 minutes, filtered, and the residue is obtained and washed to complete the anti-friction layer; , a sliding gate device.

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