KR20080035998A - A median strip - Google Patents

Abstract

A median barrier is provided to facilitate installation and separation of supports when a slidable guardrail opens to make a U-turn space by inserting and pulling the supports having caps out of support guides built under a road. A median barrier comprises support guides, supports(10), a fixed guardrail(20), a slidable guardrail(30), and a guide unit. The support guide is inserted in hole dug under a road long a central line. The upper part of the support guide protrudes out of the hole. The bottom part of the support is inserted into the support guide and provided with a cap. The fixed guardrail is installed along a central line and slides a part of it to make a U-turn area(S). The slidable guardrail is installed on the U-turn area along the central line. The guide unit is installed to move the slidable guardrail along the fixed guardrail to open and close the U-turn area.

Description

Median strip {A median strip}

The present invention relates to a central separator, and more particularly, to a central separator having an emergency turn section for separating the roadway in each direction and opening and closing the vehicle to be U-turn (U-turn).

Car-only roads such as highways are provided with a central separator for separating the driveway in which the vehicle is driven in both directions. In general, the median separator is formed by connecting a plurality of iron guard rails to each other formed by a plurality of supports formed on the centerline of the driveway formed by the concrete poured along the centerline of the driveway or spaced by a predetermined interval.

On the other hand, the central separator is provided with an emergency turn section for the U-turn of the vehicle in an emergency. The emergency section is for guiding the vehicle driving the corresponding road to the U-turn on the opposite side of the road when the operation of the vehicle is impossible on either side of the road.

Conventionally, the emergency section is selectively opened and closed by a plurality of concrete structures. That is, the emergency section is normally shielded by the concrete structure, and in the emergency as described above, the emergency section is opened by moving the concrete structure.

However, there are the following problems in the center separator according to the prior art.

As described above, the conventional emergency section is selectively opened and closed by a plurality of concrete structures. By the way, such a concrete structure is a structure of weight requires a considerable manpower and equipment to move it. In addition, in order to open the emergency section, it requires a predetermined space in which the moved concrete structure will be placed. Therefore, there is a disadvantage in that opening and closing of the emergency return section is not easy.

In addition, the concrete structure is inserted into a hole dug to a predetermined depth in the center line of the driveway. At this time, a cylindrical support guide is inserted into the hole. In addition, the gap between the support and the support guide is finally sealed by silicon or the like by a cap for preventing rain from flowing through the gap between the support and the support guide. Therefore, a disadvantage arises that the process of fixing the concrete structure becomes complicated.

The present invention is to solve such a conventional problem, it is an object of the present invention to provide a central separator configured to be opened and closed more easily.

Another object of the present invention is to provide a center separator configured to more easily fix the support for fixing the guard rail.

According to a feature of the present invention for achieving the object as described above, the present invention is provided with a long along the center line of the driveway partitioning the roadway for each direction, a part of the fixed guard rail for opening the emergency exit section; A moving guard rail provided along a center line of a roadway corresponding to the emergency return section; Guide means for guiding the moving guard rail to move along the fixed guard rail for selective opening and closing of the emergency return section; It is configured to include.

The fixed guard rails are respectively fixed to both sides of the plurality of supports provided on the center line of the road, and the movable guard rails are selectively fixed to both sides of the at least one support provided on the center line of the road corresponding to the emergency section. It is characterized by.

The moving guard rail is provided on the support, characterized in that the fastening nut is fastened to the front end of the fastening bolt penetrating one side thereof is selectively fixed to the support.

Between the movable guard rail and the support is characterized in that the shock absorbing member for absorbing the shock therebetween is provided.

The guide means includes at least one support roller for supporting the movable guard rail to be movable along the fixed guard rail, and to guide one of the movable guard rails to move along the other side when the movable guard rail moves along the fixed guard rail. It characterized in that it comprises a rail and at least one guide roller.

The guide means is provided along the center line of the driveway is characterized in that it further comprises a support rail that the support roller moves along when the moving guard rail moves along the fixed guard rail.

Guide grooves are formed on an outer circumferential surface of the support roller, and the support rails are formed in a shape to be joined to the guide grooves.

The guide means is characterized in that it further comprises at least one elastic member for imparting an elastic force to the support roller in the direction in which the support roller is in close contact with the support rail.

The guide rail is provided at the upper end of the fixed guard rail in the longitudinal direction of the fixed guard rail, the guide roller is provided on the upper end of the movable guard rail is characterized in that it moves along the guide rail.

The guide rail may be detachably provided at an upper end of the support in a moving direction of the roadway, and the guide rollers may be alternately provided in the advancing direction of the roadway at the upper ends of the moving guard rails corresponding to both sides of the support. It is done.

It is characterized in that it further comprises at least one bearing provided between the outer surface of the fixed guard rail and the inner surface of the movable guard rail to prevent the two are in close contact with each other.

It characterized in that it further comprises at least one connection bar for connecting the moving guard rails on both sides of the support.

According to another feature of the invention, the present invention includes a cylindrical support guide inserted into each of the plurality of holes provided in the center line of the driveway, the upper end of which protrudes upward by a predetermined height with respect to the bottom surface of the driveway; A support having a lower end inserted into the support guide and having a cap for shielding a gap between the support guide on one side of an outer circumferential surface thereof; And fixed guard rails fixed to both sides of the support and provided along the center line of the driveway to partition the roadway in directions. It is configured to include.

The upper end of the support guide projecting upward with respect to the bottom surface of the driveway is characterized in that it is inserted into the insertion groove formed in the bottom of the cap.

And a switching device for selectively opening and closing the emergency return section formed by opening part of the fixed guard rail.

The opening and closing device includes a moving guard rail for opening and closing the emergency return section and guide means for guiding the moving guard rail to move along the fixed guard rail for selective opening and closing of the emergency return section. It is done.

According to another feature of the invention, the invention is provided with a plurality of spaced apart by a predetermined interval along the center line of the driveway, and the support is formed to a predetermined height; A pair of fixed guard rails fixed to both sides of the support and partially opened to form an emergency section; A pair of movable guard rails are detachably fixed to both sides of the support provided along the center line of the driveway corresponding to the emergency section, and move along the fixed guard rail to selectively open and close the emergency section. ; A guide rail provided longer along the center line of the roadway above the support adjacent to the emergency return section and connecting upper ends of the fixed guard rails on both sides of the support; And a roller flange connecting the upper ends of the movable guard rails on both sides of the support, and the movable guard rails move along the guide rails in the process of moving along the fixed guard rails to open and close the emergency return section. A guide roller; It is configured to include.

The guide roller is characterized in that it moves along the guide rail in a state seated in the roller guide groove formed in the longitudinal direction on the guide rail.

One side of the guide rail is characterized in that it is provided with a stopper for preventing the guide rail from moving along the guide rail in a state in which the emergency section is completely open.

The moving guard rail is characterized in that it further comprises at least one support roller for movably supporting the fixed guard rail.

It is characterized in that it further comprises at least one connection bar for connecting the movable guard rails on both sides of the support.

The connecting bar is formed in a U-shape which is opened downwardly so that the outer surface of each of the movable guard rails is fixed in close contact with the inner surface thereof, and the support rollers are provided at the lower ends thereof.

It is provided along the center line of the driveway is characterized in that it further comprises a support rail for moving the support roller along the moving guard rail along the fixed guard rail.

Guide grooves are formed on an outer circumferential surface of the support roller, and the support rails are formed in a shape to be joined to the guide grooves.

The support roller is characterized in that it further comprises a buffer for absorbing the external force acting on the support roller in the process of moving along the support rail.

The buffer device may include a roller support bar installed at a lower end of the connection bar so as to be movable up and down, and at one end thereof, the support roller may be rotatably installed; A coil spring installed to surround the outer circumferential surface of the roller support bar, the both ends of which are supported by the connecting bar and the roller support bar, respectively; Characterized in that configured to include.

The coil spring is characterized in that it is installed in a compressed state to give the support roller an elastic force in the direction in which the support roller is in close contact with the support rail.

The guide rail is positioned to correspond to one end of the guide rail adjacent to the guide rail in both longitudinal directions of the movable guard rail in a state in which the movable guard rail shields the emergency return section, and the support rail corresponds to an opposite side of the guide rail. It characterized in that the position corresponding to the other end of the both ends of the movable rail in the longitudinal direction.

According to the present invention, it is possible to easily open and close the emergency section and simple fixing and detachment of the support, and at the same time, the operation reliability of the opening and closing process of the emergency section is enhanced.

According to the central separator according to the present invention configured as described above it can be expected the following effects.

First, according to the present invention, the emergency section is selectively opened and closed by a moving guard rail moving along the fixed guard rail. Therefore, the emergency section can be opened and closed more easily, and the place for storing the movable guard rail is unnecessary when the emergency section is opened, thereby making it easier to open and close the emergency section. .

In addition, in the present invention, the support for fixing the guard rail is configured to be more easily fixed and detachable. Therefore, the installation and separation of the central separator, that is, the opening and closing of the emergency return section is made easier.

In the present invention, the support roller for supporting the moving guard rail is given an external force in the direction to be seated on the support rail. Therefore, since the moving guard rail does not deviate from a predetermined trajectory in the process of moving along the fixed guard rail, operation reliability is improved.

Hereinafter, with reference to the accompanying drawings a preferred embodiment of the center separator according to the present invention will be described in more detail.

1 is a perspective view showing a preferred embodiment of the center separator according to the present invention, Figures 2 to 4 is a longitudinal sectional view showing a support, a fixed guard rail and a moving guard rail constituting the embodiment shown in FIG.

As shown therein, a plurality of supports 10 are provided along the center line of the driveway. The support 10 is for supporting the fixed guard rail 20 and the moving guard rail 30 to be described below. The support 10 is provided to be spaced apart from each other by a predetermined interval in the direction of the driveway, the interval between the support 10 is the curvature of the road or the size of the fixed guard rail 20 and the moving guard rail 30, etc. Will be decided.

Meanwhile, as shown in FIG. 2, a hole H is provided at the center line of the roadway to fix the support 10. Therefore, the holes H are formed in the number corresponding to the support 10. The hole H is formed by digging a bottom surface of the centerline of the roadway into a predetermined diameter and depth.

The support guide 11 is inserted into the hole H. The support guide 11 is for substantially supporting the support 10, and is formed in a cylindrical shape having a relatively high height compared to the depth of the hole (H). Therefore, the support guide 11 is protruded upward by a predetermined height with respect to the bottom surface of the driveway in the state inserted into the hole (H).

In addition, the cap 13 is provided on one side of the outer circumferential surface of the support 10. The cap 13 serves to prevent the penetration of rainwater from the outside by shielding the gap between the support 10 and the support guide 11. The cap 13 extends radially from the outer circumferential surface of the support 10, and the upper surface of the cap 13 is formed to be inclined downward at a predetermined angle. The cap 13 shields a gap between the support 10 and the support guide 11 when the support 10 is inserted into the support guide 11 while being fixed to the outer circumferential surface of the support 10.

And the insertion groove 15 is formed on the bottom of the cap (13). The support groove 10 is inserted into the support guide 11, that is, the cap 13 is inserted into the insertion groove 15 in a state of shielding the gap between the support 10 and the support guide 11. An upper end of the support guide 11 protruding upward from the bottom surface of the driveway is inserted.

Meanwhile, a plurality of fixed guard rails 20 are fixed to some of the supports 10. The fixed guard rail 20 is for partitioning the roadway by direction, and a plurality of the rails are connected to each other in the longitudinal direction and the top and bottom of the roadway by fastening bolts and nuts. The fixed guard rail 20 is composed of a pair provided to correspond to each other on both sides of the support (10). The fixing guard rail 20 is fixed to the support 10 by a fixing bolt 21 and a fixing nut 23.

The fixed guard rail 20 is formed with an emergency section (S). The emergency section (S) serves to guide the U-turn to the other side of the vehicle driving the corresponding road in an emergency when the vehicle is impossible to operate in any one of the roadway partitioned by the central separator. As shown in detail in FIG. 5, the emergency return section S is formed by deleting the fixed guard rail 20 by a section corresponding to a predetermined distance substantially in the traveling direction of the roadway.

In addition, as shown in detail in FIG. 3, guide rails 25 are respectively provided at the upper end of a part of the fixed guard rail 20 adjacent to the emergency return section (S). The guide rail 25 extends by a predetermined length in the longitudinal direction of the fixed guard rail 20, that is, the traveling direction of the roadway. At this time, the length of the guide rail 25 is preferably determined to be at least the length of the moving guard rail (30).

On the other hand, the emergency cycle section (S) is provided with a moving guard rail 30 for selectively opening and closing it. The movable guard rail 30 is installed to be movable along the fixed guard rail 20. That is, the movable guard rail 30 is positioned such that its inner surface faces the outer surface of the fixed guard rail 20 in the state where the emergency return section S is opened. In addition, the movable guard rail 30 is also connected to each other in the longitudinal direction and up and down of the roadway by fastening bolts and nuts, similarly to the fixed guard rail 20, and on both sides of the support 10. It consists of a pair provided.

As shown in FIG. 4, the movable guard rail 30 is selectively fixed to the support 10 by the fastening bolt 33 and the fastening nut 34. The fastening bolt 33 passes through any one of the movable guard rail 30, the support 10, and the other of the movable guard rail 30. The fastening nuts 34 are fastened to both ends of the fastening bolts 33 passing through the moving guard rail 30, respectively. Therefore, the movable guard rail 30 is selectively fixed to the support 10 by an operator tightening or releasing the fastening bolt 33.

A plurality of shock absorbing members 31 are provided between the movable guard rail 30 and the support 10. The buffer member 31 serves to absorb the shock between the movable guard rail 30 and the support (10). In the illustrated embodiment, the shock absorbing member 31 is provided at a position corresponding to the fastening bolt 33 and the fastening nut 34, and the fastening bolt 33 moves substantially with the shock absorbing member 31. It is fastened to the fastening nut 34 in a state where the guard rail 30 is sequentially penetrated.

In addition, a plurality of support legs 35 are provided at a lower end of the movable guard rail 30 to be spaced apart from each other by a predetermined interval. The support legs 35 extend downward from the lower end of the movable guard rail 30 by a predetermined length, and the support rollers 36 are provided at the lower ends of the support legs 35, respectively. The support roller 36 is rotatably installed at the lower end of the support leg 35 in the traveling direction of the roadway to substantially support the movable guard rail 30 to be movable along the fixed guard rail 20. .

In addition, roller flanges 38 are provided at the upper end of the movable guard rail 30 in the longitudinal direction of the movable guard rail 30, respectively. A plurality of guide rollers 39 are rotatably installed on the upper surface of the roller flange 38, respectively. The guide roller 39 serves to guide the moving guard rail 30 to move along the fixed guard rail 20. To this end, the guide roller 39 is moved along the guide rail 25 in association with the moving guard rail 30 moves along the fixed guard rail 20.

Hereinafter, the operation of the preferred embodiment of the median separator according to the present invention.

First, the process of installing the central separator according to the present invention on the roadway is described.

A plurality of holes H are formed in the center line of the roadway at predetermined intervals. And the support guide 11 is inserted into the hole (H). The support guide 11 is protruded upward by a predetermined height with respect to the bottom surface of the driveway in the state inserted into the hole (H).

Then, the lower end of the support 10 is inserted into the support guide 11. In the state in which the support 10 is inserted into the support guide 11, the upper end of the support guide 11 is inserted into the insertion groove 15 of the cap 13. As such, the upper end of the support guide 11 is inserted into the insertion groove 15 so that the gap between the support 10 and the support guide 11 is shielded by the cap 13.

In the state in which the support 10 is inserted into the support guide 11, the fixed guard rail 20 is fixed to the support 10. In this case, the emergency guard section S is formed by deleting the fixed guard rail 20 by a section corresponding to a predetermined distance in the traveling direction of the roadway. In addition, the guide rail 25 is provided in the fixed guard rail 20 adjacent to the emergency section (S).

And install the moving guard rail 30 in the emergency section (S). In this case, the movable guard rail 30 is selectively fixed to the support 10 positioned in the emergency section S by the fastening bolt 33 and the fastening nut 34. In addition, the movable guard rail 30 is selectively supported by the support roller 36.

Next, the process of opening and closing the emergency section according to the preferred embodiment of the central separator according to the present invention.

First, in the state where the emergency return section S is shielded by the moving guard rail 30, the fastening nut 34 is released to remove the fastening nut 34 to open the emergency return section S. The fastening bolt 33 is separated from the support 10 and the moving guard rail 30. Therefore, the movable guard rail 30 is separated from the support 10 to be movable along the fixed guard rail 20.

In this state, the movable guard rail 30 is moved along the fixed guard rail 20. At this time, the movement of the movable guard rail 30 is supported by the support roller 36. When the moving guard rail 30 moves along the fixed guard rail 20, the guide roller 39 moves along the guide rail 25.

In the state where the movable guard rail 30 is moved along the fixed guard rail 20, the support 10 located in the emergency section S is separated from the support guide 11. In this case, the support 10 and the cap 13 are separated from the support guide 11 at a time by the operator lifting the support 10 upward.

On the other hand, the emergency guard section S is opened by separating the support 10 from the support guide 11 while the movable guard rail 30 moves along the fixed guard rail 20. . Therefore, it is possible to make a U-turn to run to the other side through the emergency section (S) when the vehicle running in an emergency in which the vehicle cannot be driven on either side of the roadway partitioned by the central separator.

In the present embodiment, the guide rail is provided on the upper end of the fixed guard rail, but is not necessarily limited thereto. For example, the guide rail may be detachably fixed to an upper end of the support in a section corresponding to the emergency avoiding section and the length of the moving guard rail. Therefore, the guide rail is composed of one pair, not a pair. And the guide roller provided on the upper end of the movable guard rail is configured to move along the guide rail. In this case, in order to prevent the movement of the movable guard rails on both sides of the support from interfering with each other, the guide rollers are preferably alternately provided on the movable guard rails on both sides of the support.

In such a case, first, the movable guard rail is moved along the fixed guard rail while the support and the movable guard rail are released. At this time, the guide roller moves along the guide rail. The support rollers move along the center line of the roadway or the support rails.

When the movement of the movable guard rail is completed, the guide rail is separated from the upper end of the support. The opening of the emergency return section is completed by removing the support from the support guide.

Next, another embodiment of the center separator according to the present invention will be described in more detail with reference to the accompanying drawings.

Figure 6 is a perspective view showing another embodiment of the central separator according to the present invention.

As shown in the drawing, in the present embodiment, the guide rail 65 is provided only on the upper surface of the fixed guard rail 60 on the left side of the drawing, centering on the emergency return section S. And the guide roller 77 is provided only in the upper right end of the moving rail 50 in the drawing. In addition, the support roller 75 is provided only at the lower end of the left end of the moving guard rail 70 corresponding to the opposite side of the guide roller 77.

Meanwhile, the movable guard rails 50 at both sides of the support 50 are connected to each other by the connection bar 81. The connecting bar 81 is formed in a substantially U shape which is opened downward, and is fixed to the movable guard rails 50 on both sides of the support 50 by fixing bolts 82 to connect the two. . Therefore, in the present embodiment, the movable guard rails 70 on both sides of the support 50 move simultaneously along the fixed guard rail 60.

In addition, a pair of support rails 83 are provided to guide the movement of the support roller 75. As enlarged in FIG. 6, the outer circumferential surface of the support roller 75 is provided with a guide groove 76, and the support rail 83 has a substantially triangular longitudinal section that is joined to the guide groove 76. It is provided along the fixed guard rail 60 so as to be long.

Although not shown, a bearing is provided between the fixed guard rail 60 and the movable guard rail 70, that is, between the outer surface of the fixed guard rail 60 and the inner surface of the movable guard rail 70. The bearing maintains a gap between the outer surface of the fixed guard rail 60 and the inner surface of the movable guard rail 50 to prevent the two from being in close contact with each other. In addition, the support bar 73 is provided with the support roller 75 may be provided with an elastic member, for example, a spring. The spring serves to maintain the state in which the support roller 75 and the support rail 83 are in close contact with each other by applying an elastic force downward to the support roller 75.

Next, another embodiment of the central separator according to the present invention will be described in more detail with reference to the accompanying drawings.

Figure 7 is a perspective view showing another embodiment of the center separator according to the present invention, Figure 8 and Figure 9 is a longitudinal sectional view showing a fixed guard rail and a moving guard rail constituting the embodiment shown in Figure 7, respectively.

As shown therein, the fixed guard rails 120 are provided on the plurality of supports 110 which are spaced apart from each other by a predetermined distance along the center line of the lane. The fixed guard rail 120 is fixed to the support 110 by the fixing bolt 121 and the fixing nut 123. And a part of the fixed guard rail 120 is deleted by the emergency section (S) is provided.

And the guide rail 125 is provided in the fixed guard rail 120 of any one of the two sides with respect to the emergency section (S). The guide rail 125 is provided along the fixed guard rail 120. In this case, the guide rail 125 connects the upper ends of the fixed guard rails 120 on both sides of the support 110. That is, the guide rail 125 is substantially positioned between the fixed guard rails 120 corresponding to the upper side of the support 110. The length of the guide rail 125 is preferably determined to be greater than or equal to the length of the moving guard rail 130 to be described below.

And, as shown in detail in Figure 8, the guide rail 125 is formed with a roller guide groove 126. The roller guide groove 126 is a portion in which the guide roller 139 to be described below is seated and moved, and a portion of the center portion of the guide rail 125 is recessed downward by a predetermined depth.

On the other hand, the guide rail 125 is provided with a stopper 127. The stopper 127 is provided at one end of the guide rail 125, a right end in FIG. 7, and substantially inside the roller guide groove 126. The stopper 127 is for preventing the guide roller 139 from moving further along the guide rail 125 in a state where the emergency section S is completely open.

In addition, as shown in Figure 9, the movement guard rail 130 is provided to move along the fixed guard rail 120 to selectively open and close the emergency section (S). The movable guard rail 130 is fixed to both sides of the support 110 by the fastening bolt 133 and the fastening nut 134. In addition, a buffer member 131 is provided between the support 110 and the moving guard rail 130. The buffer member 131 serves to absorb a shock between the support 110 and the moving guard rail 130.

A roller flange 138 is provided at the upper end of the moving guard rail 130. The roller flange 138 is formed in a U-shape that is opened toward the substantially downward, both ends are fixed to the upper end of the movable guard rail 130 on both sides of the support 110, respectively.

One guide roller 139 is provided on the bottom of the roller flange 138. The guide roller 139 is rotatably supported by a roller bracket 139A fixed to the bottom of the roller flange 138. The guide roller 139 is in the state seated in the roller guide groove 126 when the moving guard rail 130 moves along the fixed guard rail 120 to open and close the emergency return section (S). It moves along the guide rail 125. The guide roller 139 is provided to correspond to one end of the moving guard rail 130 adjacent to the guide rail 125 in a state in which the moving guard rail 130 shields the emergency return section S.

Meanwhile, a connection bar 141 is provided to connect the moving guard rails 130 on both sides of the support 110. The connecting bar 141 is opposite to the guide roller 139, that is, the moving guard rail 130 is spaced apart from the guide rail 125 at the state where the moving guard rail 130 shields the emergency section S. It is provided to correspond to the other end of the 130. The connecting bar 141 is formed in a U-shape which is opened toward the lower side. In addition, the connection bar 141 is fixed in such a state that the inner surface is in close contact with the outer surface of the moving rail 130.

In addition, a pair of support rollers 136 are provided at the lower end of the connection bar 141. The support roller 136 serves to support the moving guard rail 130 moving along the fixed guard rail 120 to open and close the emergency section S. A support rail 143 is provided along the center line of the roadway. The support rail 143 is for guiding the movement of the support roller 136. Guide grooves 136A are formed on the outer circumferential surface of the support roller 136, and the support rails 143 are formed to have a longitudinal section that is joined to the guide grooves 136A. For example, the guide grooves 136A and the support rails 143 may be formed to have approximately triangular longitudinal cross sections.

A roller support bar 135 is provided to install the support roller 136 on the connection bar 141. The roller support bar 135 has a predetermined length up and down, and moves up and down with the upper end inserted into the lower end of the connection bar 141. Also, although not shown, a stopper may be provided to prevent the roller support bar 135 from being completely removed from the connecting bar 141. In addition, one side of the outer peripheral surface of the roller support bar 135 is provided with a support flange 135A extending radially. The lower end of the roller support bar 135 is provided with a roller bracket 135B for installing the support roller 136, respectively.

And in order to absorb the external force generated in the support roller 136 in the process of moving along the fixed guard rail 120 in order to open and close the emergency guard section (S) the coil spring ( 137 is provided. The coil spring 137 is installed to surround the roller support bar 135. At this time, both ends of the coil spring 137 are respectively supported on the lower end of the connection bar 141 and the upper surface of the support flange 135A.

In addition, the coil spring 137 absorbs an external force generated in the support roller 136 and imparts elastic force to the support roller 136 in a direction in which the support roller 136 is in close contact with the support rail 143. do. To this end, the coil spring 137 is installed in a compressed state. At this time, the coil spring 137 is compressed enough to elastically deform to impart an elastic force to the support roller 136 and to absorb external force acting on the support roller 136.

Next, the process of opening and closing the emergency section according to another embodiment of the central separator according to the present invention.

* Release the fastening of the fastening bolt 133 and the fastening nut 134, the fastening bolt 133 is separated from the support 110 and the moving guard rail 130. The movable guard rail 130 is moved along the fixed guard rail 120. At this time, the guide roller 139 moves along the guide rail 125 by the movement of the moving guard rail 130, the support roller 136 moves along the support rail 143.

In more detail, when the movable guard rail 130 moves along the fixed guard rail 120, the guide roller 139 is seated in the roller guide groove 126 and the guide rail 125. Move along At the same time, the support roller 136 moves along the support rail 143 in a state where the support rail 143 is seated in the guide groove 136A.

Meanwhile, in the process of moving the moving guard rail 130 along the fixed guard rail 120, an external force may act on the support roller 136 by the weight of the moving guard rail 130 and an external obstacle. . As such, the external force acting on the support roller 136 is absorbed by the coil spring 137. In addition, the support roller 136 is provided with an elastic force in the direction that is in close contact with the support rail 143 by the coil spring 137, that is, the direction in which the support rail 143 is seated in the seating groove 136A. . Therefore, the phenomenon that the support roller 136 is removed from the support rail 143 in the process of moving the moving guard rail 130 along the fixed guard rail 120 is prevented.

In addition, if the moving guard rail 130 continues to move along the fixed guard rail 120, the emergency section (S) is opened. When the emergency section S is completely open, the guide roller 139 moves along the guide rail 125 and one side of its outer circumferential surface is in close contact with the stopper 127 to further guide the rail 125. Therefore, it does not move. Therefore, the movement guard rail 130 is prevented from excessively moving along the fixed guard rail 120.

Within the scope of the basic technical spirit of the present invention as well as many other modifications are possible to those skilled in the art, the scope of the present invention should be interpreted based on the appended claims. .

1 is a perspective view showing a preferred embodiment of the median separator according to the present invention.

Figure 2 is a longitudinal sectional view showing a state in which the support constituting the embodiment shown in Figure 1 is fixed along the center line of the driveway.

3 is a longitudinal sectional view showing a fixed guard rail constituting the embodiment shown in FIG.

4 is a longitudinal sectional view showing a moving guard rail constituting the embodiment shown in FIG.

FIG. 5 is a perspective view showing an emergency section of the central separator opened by the embodiment shown in FIG. 1; FIG.

Figure 6 is a perspective view showing another embodiment of the central separator according to the present invention.

Figure 7 is a perspective view showing another embodiment of the central separator according to the present invention.

8 is a longitudinal sectional view showing a fixed guard rail constituting the embodiment shown in FIG.

9 is a longitudinal sectional view showing a moving guard rail constituting the embodiment shown in FIG.

Explanation of symbols on the main parts of the drawings

10: Support 11: Support Guide

13: cap 15: insertion groove

20: fixed rail 21: fixed bolt

23: fixing nut 25: guide rail

30: moving guard rail 31: cushioning member

33: Bolt 34: Nut

35: support leg 36: support roller

38: roller flange 39: guide roller

H: Hall S: Emergency Section

Claims (3)

Cylindrical support guides each inserted into a plurality of holes provided in the center line of the roadway, the upper end of which protrudes upward by a predetermined height with respect to the bottom surface of the roadway; A support having a lower end inserted into the support guide and having a cap for shielding a gap between the support guide on one side of an outer circumferential surface thereof; And Fixed guard rails each fixed to both sides of the support and provided along the center line of the roadway to partition the roadway in directions; The median is configured to include. The method of claim 1, And an upper end of the support guide projecting upward with respect to the bottom surface of the driveway is inserted into an insertion groove formed in the bottom of the cap. The method of claim 2, And a switching device for selectively opening and closing an emergency return section formed by opening a portion of the fixed guard rail.

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