KR100610755B1 - A guard rail for absorbing impaction and an apparatus for absorbing impact energy used in that apparatus - Google Patents

Abstract

The present invention is a shock absorbing guardrail device using a bellows member installed on the guard rail consisting of a plurality of supports and the tensile steel connected between the support at predetermined intervals to effectively absorb the impact energy due to the impact of the vehicle and its use The present invention relates to an impact energy absorbing device, which includes energy conversion means installed at each end and at least one end of a tensile steel to convert tensile force due to external force acting on the tensile steel into plastic deformation. The energy conversion means has a certain length, both end faces are clogged cylindrical shape, one end of the both ends of the housing is formed with a hole formed in the other end of the fastening hole is fixed to the support, and the hole is connected to the tensile steel and the inner surface of the housing A diaphragm moving along and a first and / or second bellows member provided between the diaphragm and the housing are included. By installing the shock energy absorber configured as described above on the guard rail at an appropriate interval, it is possible to effectively absorb the impact energy in the event of a vehicle crash, thereby reducing the injuries of the injured person. This saves cost and time. In addition, the impact energy absorbing device of the present invention is connected to the tensile steel of the wire, it is possible to ensure the driver's view.

1st bellows member, 2nd bellows member, housing, tensile steel, diaphragm, plastic deformation

Description

GUARD RAIL FOR ABSORBING IMPACTION AND AN APPARATUS FOR ABSORBING IMPACT ENERGY USED IN THAT APPARATUS}

1 is a schematic view showing a shock absorbing guard rail device according to the present invention and a shock energy absorbing device used therein is installed on the guard rail.

Figure 2 is a partially enlarged view showing a state in which the impact energy absorbing device used in the present invention is coupled to the support of the guard rail.

Figure 3 is a cross-sectional view of the bellows member used in the shock absorbing guardrail device and the impact energy absorbing apparatus used in accordance with the present invention.

Figures 4a and 4b is a first embodiment of the shock absorbing guardrail device and the impact energy absorbing device used in the present invention, Figure 4a is a state before deformation, Figure 4b is a cross-sectional view showing a state after deformation.

Figure 5 is a cross-sectional view showing a second embodiment of the shock absorbing guardrail device and the impact energy absorbing apparatus used in accordance with the present invention.

6a and 6b is a third embodiment of the shock absorbing guardrail device and the impact energy absorbing apparatus used in the present invention, Figure 6a is a state before deformation, Figure 6b is a cross-sectional view showing a state after deformation.

Figure 7 is a cross-sectional view showing a fourth embodiment of the shock absorbing guardrail device and the impact energy absorbing apparatus used in accordance with the present invention.

8 is a cross-sectional view showing a fifth embodiment of the shock absorbing guardrail device and the impact energy absorbing apparatus used in accordance with the present invention.

9 is a cross-sectional view showing a sixth embodiment of the shock absorbing guardrail device and the impact energy absorbing apparatus used in accordance with the present invention.

10 is a cross-sectional view showing a seventh embodiment of the shock absorbing guardrail device and the impact energy absorbing apparatus used in accordance with the present invention.

11 is a cross-sectional view showing an eighth embodiment of a shock absorbing guardrail device and an impact energy absorbing device used in accordance with the present invention.

12 is a view showing another embodiment of the impact energy absorbing apparatus according to the present invention.

<Explanation of symbols for the main parts of the drawings>

10: shock energy absorber 20: housing

20a: one end face 20b: the other end face

22: hole 26: fastener

30: diaphragm 60, 60a, 60b: 1st bellows member

70, 70a, 70b: second bellows member 80: bellows member

100: support 102: bracket

200: tensile steel 300: compressed steel

The present invention relates to a device that is installed on the guard rail of the road in which the vehicle proceeds to absorb the impact energy due to the impact of the vehicle, and more particularly, to a tensile steel connected between the plurality of supports and the supports are installed at predetermined intervals The present invention relates to a shock absorbing guardrail device including first and second bellows member structures installed on a guard rail configured to effectively absorb impact energy according to a vehicle crash.

In general, guardrails are installed on the road where the vehicle is driven to minimize impact of the vehicle by absorbing the impact energy due to the collision of the vehicle and to prevent the accident.

Conventional guard rails include plate-type guard rails and guard rails made of steel wire.

The plate-type guard rail has a structure that absorbs collision energy appropriately in the event of a vehicle crash, but the amount of absorption is limited, and it is costly and time-consuming to recover since it is affected by a wide range from the impact point when the vehicle crashes. Not only that, but also the wide plate shape has the disadvantage of obstructing the driver's view.

On the other hand, the guardrail made of steel wire is superior to the plate-type guardrail in terms of providing a good visibility to the driver, but it is easy to short-circuit because it does not absorb the collision energy properly in the event of a collision, thereby causing the collision vehicle to overturn the lane. . In addition, it is difficult to recover immediately in the event of an accident by supporting a very long distance with a single continuous wire, and there is a risk of secondary accidents and a high cost of repairing the wires in short circuits.

The present invention has been made to solve the above problems of the prior art, the impact energy absorbing device comprising a bellows member structure in a guard rail consisting of a plurality of supports and tension steels connected between the supports installed at predetermined intervals. It is installed at predetermined intervals to absorb shock energy in a vehicle crash accident, and to reduce vehicle damage and injuries.

Another object of the present invention is to reduce the cost and time by installing the shock absorbing guard rail device according to the present invention separately for each support, so that only the wire of the corresponding section can be replaced during maintenance of the guard rail. do.

Another object of the present invention is to provide a shock absorbing guardrail device according to the present invention fixed to the support and to be connected to the tensile steel made of wire to ensure the driver's view.

In order to achieve the object of the present invention as described above, the shock-absorbing guardrail device according to the present invention is a guard rail composed of a plurality of supports and the tensile steel connected between the support is provided at a predetermined interval, It is installed on at least one end, characterized in that it comprises an energy conversion means for converting the tensile force due to the external force acting on the tensile steel to plastic deformation.

The energy conversion means of the above-described impact energy absorbing device is installed between each support of the guard rail and the tensile steel, and has a certain length and is closed in both ends of the cylindrical shape, one end of the both ends is formed with a hole and the other end is It is preferred to include a housing fixed to the support, a diaphragm moving along the inner surface of the housing through a hole formed in one end surface of the housing, and a first bellows member disposed between the diaphragm and the other end surface of the housing. Do.

In addition, it is preferable that the energy conversion means of the above-described impact energy absorber further comprises a separate second bellows member between one end face of the housing and the diaphragm.

In addition, the energy conversion means of the shock absorbing guardrail device according to the present invention is installed between each support of the guardrail and the tensile steel, and has a constant length and both end faces are clogged cylindrical shape, a hole in one end face of both ends A second bellows formed between the housing, which is formed and the other end surface is fixed to the support, a diaphragm moving along the inner surface of the housing through a hole formed in one end surface of the housing, and moving along the inner surface of the housing; And a member.

Further, the first and / or second bellows members used in the shock absorbing guardrail device of the present invention are preferably provided in at least double.

Other objects, obvious advantages and novel features of the present invention will become more apparent from the following detailed description and the preferred embodiment according to the accompanying drawings.

The configuration of the shock absorbing guardrail device according to the present invention will be described in detail with the accompanying drawings.

1 is a schematic view showing a shock absorbing guard rail device according to the present invention and a shock energy absorbing device used therein is installed on the guard rail, Figure 2 is a shock energy absorbing device according to the invention coupled to the support of the guard rail It is a partial enlarged view showing the state. As shown in Figure 1 and 2, the guard rail is installed on the ground in the vertical direction with a plurality of supports 100 spaced apart at predetermined intervals, the support 100 is a plurality of tensile steel in the horizontal direction ( 200 is made of a spaced apart structure.

The support 100 has a cylindrical columnar shape which is placed at a predetermined height on the ground, and is installed at predetermined intervals, and the bracket 102 is fixedly installed on the front surface thereof.

Tensile steel 200 may be made of a tensile material such as a wire having a circular cross section and length of a predetermined diameter.

Fastening holes (not shown) are formed at both sides of the bracket 102 and the bottom is fixed to the support with screws (S).

In addition, the shock absorbing guardrail device according to the present invention and the impact energy absorbing device used therein are fixed to a plurality of brackets 102 on the front surface of the support 100 of the guardrail and one side of the bracket 102 and tension It is configured to include an energy conversion means connected to at least one end of the steel (200).

The energy conversion means is a cylindrical housing 20 having both ends of which a shape has a predetermined length and is closed. A hole 22 having a predetermined diameter is formed in the center of one end surface 20a of the housing 20, and the other end surface thereof. A fastening hole 26 is formed in the 20b to be fastened to the fastening holes at both sides of the bracket 102 by bolt nuts N and B, respectively. The inside of the housing 20 is connected to the tensile steel 200.

3 is a cross-sectional view of the bellows member used in the shock energy absorbing device used in the shock absorbing guard rail device according to the present invention, Figures 4a to 4b is a shock absorbing guard rail device and the impact used therein As a first embodiment of the energy absorber, FIG. 4A is a cross-sectional view showing a state before deformation and FIG. 4B a state after deformation. As shown in Figures 3 and 4a to 4b, the above-described energy conversion means converts the tensile force due to the external force acting on the tensile steel 200 to plastic deformation, the housing 20, diaphragm 30 and It may be composed of a first bellows member (60).

The housing 20 may have a predetermined length, and both end surfaces thereof may have a closed cylindrical shape, and a hole 22 may be formed in one end surface 20a and a fastening hole 26 may be formed in the other end surface 20b.

The hole 22 formed in one end surface 20a of the housing 20 preferably has a diameter larger than the cross-sectional diameter of the tensile steel 200 so that the tensile steel 200 can move.

The diameter of the diaphragm 30 is smaller than the inner diameter of the housing 20 so that the diaphragm 30 may be embedded in the housing 20 in a plate shape having a predetermined thickness and perpendicular to the axial direction of the housing 20. It is formed in size.

In addition, the first bellows member 60 is formed by compressing the bellows member 80, and the size of the outer diameter of the first bellows member 60 is smaller than the size of the inner diameter of the housing 20. The material used to fabricate the first bellows member 60 is preferably a cold rolled steel sheet or a thin plate such as Inconel, which is a material having good elasticity and formability, and in the present invention, a product obtained by cold rolling the raw material HOT-COIL at room temperature Cold rolled steel (SPCC) material was used. As shown in FIG. 3, the bellows member 80 is manufactured by using a hydroforming method for such a material. At this time, the thickness t of the bellows member 80 is preferably about 1.0 mm, the outer diameter (Do) is preferably about 50 mm and the inner diameter (Di) is preferably about 30 mm. When the crimped portion Q of the bellows member 80 is pressed and pressed into the first bellows member 60, the reduction ratio of the length is w mm between the peaks H and the peaks H of the bellows member 80. In this case, a ratio of about 1: 5 is preferable.

In addition, one side of the first bellows member 60 provided in the housing 20 is fixedly coupled to the other end surface 20b of the housing 20 by welding or the like, and the other side is fixedly coupled to the other side of the diaphragm 30. One side of the diaphragm 30 is fixedly coupled to the tensile steel (200).

5 is a cross-sectional view showing a second embodiment of the impact energy absorbing device used in the shock absorbing guardrail device according to the present invention. As shown in FIG. 5, the above-described energy conversion means may be composed of a housing 20, a diaphragm 30, and a second bellows member 70.

Here, the second bellows member 70 is formed of the bellows member 80 in an uncompressed state, and the size of the outer diameter after being compressed to enable compression in the housing 20 is equal to the inner diameter of the housing 20. It is formed smaller than size.

In addition, the second bellows member 70 is embedded in the housing 20 so as to surround the tensile steel 200 coaxially, one side of which is fixedly coupled to one end surface 20a of the housing 20 and the other side of the tensile steel material. It is fixedly coupled to one side of the diaphragm 30 fixedly coupled to the (200).

6a and 6b are a third embodiment of the impact energy absorbing apparatus used in the shock absorbing guardrail device according to the present invention, Figure 6a is a state before deformation, Figure 6b is a cross-sectional view showing a state after deformation. As shown in FIG. 6, the above-described energy conversion means may be composed of a housing 20, a diaphragm 30, a first bellows member 60 and a second bellows member 70.

Here, the first bellows member 60 is a bellows in a compressed state, the outer diameter of the first bellows member 60 is formed smaller than the inner diameter of the housing 20, the second bellows member 70 ) Is an uncompressed bellows so that the size of the outer diameter after being compressed to allow compression in the housing 20 is smaller than that of the inner diameter of the housing 20.

Then, one side of the first bellows member 60 provided in the housing 20 is fixedly coupled to the other end surface 20b of the housing 20 and the other side is fixedly coupled to the other side surface of the diaphragm 30, the second bellows The member 70 is embedded in the housing 20 so as to surround the tensile steel 200 coaxially, one side of which is fixedly coupled to one end surface 20a of the housing 20, and the other side of the member 70 is fixedly coupled to the tensile steel 200. It is fixedly coupled to one side of the partitioned plate (30).

7 is a cross-sectional view showing a fourth embodiment of the impact energy absorbing device used in the shock absorbing guardrail device according to the present invention. As shown in FIG. 7, the bellows member included in the above-described energy conversion means may be composed of the first A bellows member 60a and the first B bellows member 60b.

Here, the first A bellows member 60a and the first B bellows member 60b are compressed bellows, and the first A bellows member 60a coaxially embeds the same length of the first B bellows member 60b and the first A The size of the outer diameter of the bellows member 60a is smaller than the size of the inner diameter of the housing 20.

One side of the first A bellows member 60a and the first B bellows member 60b are fixedly coupled to the other end surface 20b of the housing 20, and the other side of the diaphragm 30 to which the tensile steel 200 is connected. Each side is fixedly coupled.

8 is a cross-sectional view showing a fifth embodiment of the impact energy absorbing device used in the shock absorbing guardrail device according to the present invention. As shown in FIG. 8, the bellows member included in the above-described energy conversion means may be composed of the second A bellows member 70a and the second B bellows member 70b.

Here, the 2A bellows member 70a and the 2B bellows member 70b are double formed bellows in an uncompressed state, and the 2A bellows member 70a is coaxial with the 2B bellows member 70b of the same length. The size of the outer diameter of the second A bellows member 70a is smaller than that of the inner diameter of the housing 20.

In addition, the second A bellows member 70a and the second B bellows member 70b are embedded in the housing 20 so as to surround the tensile steel 200 coaxially, and one side thereof is disposed at one end surface 20a of the housing 20. Each is fixedly coupled and the other side is fixedly coupled to one side of the diaphragm 30 fixedly coupled to the tensile steel 200, respectively.

9 is a cross-sectional view showing a sixth embodiment of the impact energy absorbing device used in the shock absorbing guardrail device according to the present invention. As shown in FIG. 9, the bellows member included in the above-described energy conversion means may be composed of the first A bellows member 60a, the first B bellows member 60b, and the second bellows member 70.

Here, the first A bellows member 60a and the first B bellows member 60b are compressed bellows and the second bellows member 70 is an uncompressed bellows. Built into the middle. The 1A bellows member 60a coaxially houses the 1B bellows member 60b of the same length, and the size of the outer diameter of the 1A bellows member 60a is smaller than the size of the inner diameter of the housing 20. Similarly, the size of the outer diameter of the second bellows member 70 is also smaller than the size of the inner diameter of the housing 20.

One side of the first A bellows member 60a and the first B bellows member 60b are fixedly coupled to the other end surface 20b of the housing 20, and the other side thereof is fixedly coupled to the other side of the diaphragm 30. In addition, the second bellows member 70 is embedded in the housing 20 so as to surround the tensile steel 200 coaxially, and one side of the second bellows member 70 is fixedly coupled to one end surface 20a of the housing 20 and the other side thereof is a tensile steel ( It is fixedly coupled to one side of the diaphragm 30 fixedly coupled to the 200.

10 is a cross-sectional view showing a seventh embodiment of the impact energy absorbing device used in the shock absorbing guardrail device according to the present invention. As shown in FIG. 10, the bellows member included in the above-described energy conversion means may be composed of a first bellows member 60, a second A bellows member 70a and a second B bellows member 70b.

Here, the first bellows member 60 is a bellows member in a compressed state and the second A bellows member 70a and the second B bellows member 70b are bellows in an uncompressed state, and the second A bellows member 70a is the same. The length of the 2B bellows member 70b of length is coaxially embedded, and the magnitude | size of the outer diameter after the compression of the 2nd A bellows member 70a is formed smaller than the magnitude | size of the inner diameter of the housing 20. As shown in FIG.

Then, one side of the first bellows member 60 is fixedly coupled to the other end surface 20b of the housing 20 and the other side is fixedly coupled to the other side surface of the diaphragm 30. In addition, the second A bellows member 70a and the second B bellows member 70b are embedded in the housing 20 so as to enclose the tensile steel 200 coaxially, and one side thereof is disposed at one end surface 20a of the housing 20. Each is fixedly coupled and the other side is fixedly coupled to one side of the diaphragm 30 fixedly coupled to the tensile steel 200, respectively.

11 is a cross-sectional view showing an eighth embodiment of the impact energy absorbing apparatus used in the shock absorbing guardrail device according to the present invention. As shown in FIG. 11, the bellows member embedded in the housing 20 includes the first A bellows member 60a, the first B bellows member 60b, the second A bellows member 70a, and the second B bellows member 70b. It may be configured.

Here, the first A bellows member 60a and the first B bellows member 60b are compressed bellows members, and the second A bellows member 70a and the second B bellows member 70b are uncompressed bellows. The first A bellows member 60a is provided in the housing 20 by coaxially embedding the first B bellows member 60b of the same length, and the second A bellows member 70a is provided with the second B bellows member 70b of the same length. ) Is coaxially embedded in the housing 20.

One side of the first A bellows member 60a and the first B bellows member 60b are fixedly coupled to the other end surface 20b of the housing 20, and the other side thereof is fixedly coupled to the other side of the diaphragm 30. In addition, the second A bellows member 70a and the second B bellows member 70b are embedded in the housing 20 so as to enclose the tensile steel 200 coaxially, and one side thereof has one end surface 20a of the housing 20. Each is fixedly coupled to the other side is fixedly coupled to one side of the diaphragm 30 is fixed to the tensile steel 200, respectively.

In addition, Figure 12 shows another application of the impact energy absorbing apparatus according to the present invention. As shown, the impact energy absorbing device includes a predetermined support and at least one end is connected to the compressed steel 300, the energy conversion means for converting the compressive force due to the external force acting on the compressed steel 300 to plastic deformation It is composed.

The compressed steel 300 may be formed of a pipe or the like as a compressible rigid body having a predetermined diameter and length.

The above-described energy conversion means may be composed of the housing 20, the diaphragm 30, the first bellows member 60 and the second bellows member 70.

Here, the first bellows member 60 is a bellows in a compressed state, the outer diameter of the first bellows member 60 is formed smaller than the inner diameter of the housing 20, the second bellows member 70 ) Is an uncompressed bellows so that the size of the outer diameter after being compressed to allow compression in the housing 20 is smaller than that of the inner diameter of the housing 20.

In addition, the first bellows member 60 provided in the housing 20 is embedded in the housing 20 so as to surround the compressed steel 300 in the same axis, and one side is fixed to one end surface 20a of the housing 20. The other side is fixedly coupled to the other side of the diaphragm 30 is fixedly coupled to the compressed steel 300, one side of the second bellows member 70 is fixedly coupled to the other end surface 20b of the housing 20 and the other The side is fixedly coupled to one side of the diaphragm 30.

The housing 20 applied to the present invention is shown in the figure formed in a circular shape, which is only shown for convenience of description only, of course, can be used to form a polygon.

With reference to Figures 4 to 12 with respect to the shock absorbing guardrail device and the impact energy absorbing device used therein according to the present invention configured as described above will be described the operation of the embodiment.

4A and 4B show a state before deformation and FIG. 4B shows a state after deformation of the energy conversion means in the first embodiment of the impact energy absorbing device used in the shock absorbing guardrail device according to the present invention. When an external force is applied to the tensile steel 200 by an impact such as a vehicle, the tensile steel 200 is pulled by the applied tensile force and pulls the diaphragm 30 in the housing 20 in the direction of the arrow. Thus, the diaphragm 30 is plastically deformed by tensioning the first bellows member 60 fixed to one side while moving. That is, the impact energy applied to the tensile steel 200 is used for plastic deformation of the first bellows member 60, so that the repulsive force due to the collision can be alleviated on the collided vehicle, and at the same time, the tensile steel 200 due to the vehicle collision. ) Is prevented from shorting. In addition, as shown in Figure 1, the impact energy absorbing device is separately fixed to both sides of the bracket 102, which is spaced apart on the front of each support 100 fixedly coupled to the tensile steel ( 200) and the impact energy absorber is plastically deformed. Therefore, only the corresponding section needs to be repaired during recovery.

5 is a view showing a second embodiment of the impact energy absorbing apparatus used in the shock absorbing guardrail device according to the present invention, when the external force is applied to the tensile steel 200 by the impact of a vehicle, the tensile steel ( 200 is pulled by the applied tensile force and at the same time pull the diaphragm 30 in the housing 20 in the direction of the arrow. As a result, the diaphragm 30 compresses and plasticizes the second bellows member 70 which is fixedly coupled to the other side while moving. That is, the impact energy applied to the tensile steel 200 is used for plastic deformation of the second bellows member 70, thereby alleviating the impact force caused by the impact on the impacted vehicle.

6A and 6B illustrate a third embodiment of the impact energy absorbing apparatus used in the shock absorbing guardrail device according to the present invention, and FIG. 6A shows a state before deformation and FIG. 6B shows a state after deformation. When an external force is applied to the tensile steel 200 by an impact such as a vehicle, the applied tensile force pulls the diaphragm 30 in the housing 20 in the direction of the arrow. At this time, the diaphragm 30 compresses and plasticizes the first bellows member 60 fixed to one side while compressing the second bellows member 70 fixed to the other side while moving. That is, the impact energy applied to the tensile steel 200 is used for plastic deformation of the first bellows member 60 and the second bellows member 70, thereby absorbing the double energy in the first and second bellows members 60 and 70. do. Therefore, the repulsive force due to the collision can be mitigated twice to the impacted vehicle, and at the same time, the tensile steel 200 is prevented from being shorted by the vehicle collision.

Figure 7 shows a fourth embodiment of the impact energy absorbing device used in the shock absorbing guardrail device according to the present invention, when the external force is applied to the tensile steel 200 by the impact of a vehicle, tensile steel ( At the same time as the 200 is tensioned, the diaphragm 30 in the housing 20 is pulled in the direction of the arrow, and the diaphragm 30 tensions the 1A and 1B bellows members 60a and 60b respectively fixed to one side thereof. Plastic deformation That is, the impact energy applied to the tensile steel 200 is absorbed in duplicate by the 1A and 1B bellows members 60a and 60b. Therefore, the repulsive force due to the collision can be mitigated twice to the impacted vehicle, and at the same time, the plastic deformation of the first and second bellows members 60a and 60b by the vehicle collision is prevented from exceeding the breaking limit of the tensile steel 200 The short circuit phenomenon can be reduced.

Similarly, as shown in the fifth embodiment of FIG. 8, the sixth embodiment of FIG. 9, the seventh embodiment of FIG. 10, and the eighth embodiment of FIG. 11, it is used in the shock absorbing guardrail device according to the present invention. The energy conversion means of the impact energy absorbing device is at least two or more first bellows member (60, 60a, 60b) and / or at least two or more second bellows member (70, 70a, 70b) including a collision of the vehicle. By using the impact energy for the plastic deformation of the bellows members 60, 60a, 60b, 70, 70a, 70b described above, the resultant impact energy is double, triple or quadruple in the device 10 according to the invention. Can be absorbed.

The elastic modulus of the bellows member 80 used in the present invention is determined according to the ratio of the outer diameter Do, the inner diameter Di, and the thickness t. In general, the bellows member 80 included in the device 10 according to the present invention with respect to the tensile steel 200 used for the guardrail to appropriately absorb impact energy during a collision of a vehicle and not obstruct the driver's field of view is approximately A thickness t of 1.0 mm, an outer diameter Do of approximately 50 mm and an inner diameter Di of approximately 30 mm are preferred. In addition, the shrinkage ratio of the length for crimping the wrinkles Q of the bellows member 80 to sufficiently absorb the impact energy is preferably about 1: 5. When the reduction ratio of the length is small, a large tensile force is not required to tension, so plastic deformation with only a small impact energy, so that the connected tensile steel 200 can be easily shorted. On the other hand, if the length is reduced too much, the curved peaks or valleys of the wrinkles Q of the bellows member 80 may be damaged and thus may not function properly.

As shown in another embodiment of Figure 12, the energy conversion means of the impact energy absorbing device according to the present invention, when the compressive force is applied to the compressed steel 300 by the impact, the applied compressive force is applied in the housing 20 The diaphragm 30 is moved in the direction of the arrow. At this time, the diaphragm 30 compresses and plastically deforms the first bellows member 60 fixed to the other side while moving while compressing the second bellows member 70 fixed to the one side. That is, the impact energy applied to the compressed steel 300 is used for plastic deformation of the first bellows member 60 and the second bellows member 70, thereby absorbing the double energy in the first and second bellows members 60 and 70. do. Therefore, the impact force of the repulsive force due to the impact on the collided object can be mitigated in twofold. Therefore, the impact energy absorbing device according to the present invention may be used to absorb the impact energy when the elevator falls.

The technical idea of the shock absorbing guardrail device comprising a first bellows member and a second bellows member installed on a guard rail composed of a plurality of supports and tensile steels connected between the supports at predetermined intervals. Although described together with, this does not limit the invention as illustratively illustrating the best embodiments of the invention.

In addition, it is obvious that any person skilled in the art can make various modifications and imitations without departing from the scope of the technical idea of the present invention.

As described above, according to the shock absorbing guardrail device including the bellows member and the impact energy absorbing device used therein, the tensile steel connected between the plurality of supports and the support are provided at predetermined intervals By installing a plurality of shock energy absorbers at appropriate intervals in the guard rail, it is possible to effectively absorb the impact energy in the event of a vehicle crash, thereby reducing the injuries of the accident, and only maintaining the wires of the corresponding section during maintenance of the guard rail. It allows for replacement, which saves time and money. In addition, the guardrail device for shock absorption according to the present invention is connected to the tensile steel material of the wire has the effect of ensuring the driver's field of view.

Claims (8)

In the guard rail consisting of a plurality of supports (100) installed at a predetermined interval and the tensile steel 200 connected between each support (100), It is installed on at least one end of the tensile steel 200, the shock absorbing guardrail device, characterized in that it comprises an energy conversion means for converting the tensile force due to the external force acting on the tensile steel 200 into plastic deformation. The method of claim 1, The energy conversion means It is installed between each support 100 and the tensile steel 200, and has a predetermined length and both end surfaces are clogged cylindrical shape, the hole 22 is formed in one end surface 20a of the both end surfaces and the other end surface 20b is a housing 20 which is fixed to the support 100; A diaphragm 30 connected to the tensile steel 200 through the hole 22 and moving along an inner surface of the housing 20; And a first bellows member (60) installed between the diaphragm (30) and the other end surface (20b) of the housing (20). The method of claim 2, The first bellows member (60) is a shock absorbing guardrail device, characterized in that installed in at least double. The method of claim 2, Shock absorbing guardrail device, characterized in that it further comprises a second bellows member (70) provided between one end surface (20a) of the housing (20) and the diaphragm (30). The method of claim 4, wherein Shock absorbing guardrail device, characterized in that the bellows member (60, 70) is installed in at least double. The method of claim 1, The energy conversion means It is installed between each support 100 and the tensile steel 200, and has a predetermined length and both end surfaces are clogged cylindrical shape, the hole 22 is formed in one end surface 20a of the both end surfaces and the other end surface 20b is a housing 20 which is fixed to the support 100; A diaphragm 30 connected to the tensile steel 200 through the hole 22 and moving along an inner surface of the housing 20; Shock absorbing guardrail device characterized in that it comprises a second bellows member (70) provided between one end surface (20a) of the housing (20) and the diaphragm (30). The method of claim 6, Shock absorbing guardrail device, characterized in that the second bellows member (70) is installed in at least double. A housing 20 having a predetermined length and having both end faces closed, a hole 22 formed in one end face 20a of the both end faces, and the other end face 20b being fixed to a predetermined support; A diaphragm 30 moving along an inner surface of the housing 20; A compressed steel material 300 connected to the diaphragm 30 through the hole 22 to transmit a compressive force due to an external force; A first bellows member (60) installed between one end surface (20a) of the housing (20) and the diaphragm (30) to convert compression force due to external force into plastic deformation; And And a second bellows member (70) disposed between the diaphragm (30) and the other end surface (20b) of the housing (20).

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