CN108004985B - Connecting device of flexible steel cable protective guard - Google Patents
Connecting device of flexible steel cable protective guard Download PDFInfo
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- CN108004985B CN108004985B CN201711120880.6A CN201711120880A CN108004985B CN 108004985 B CN108004985 B CN 108004985B CN 201711120880 A CN201711120880 A CN 201711120880A CN 108004985 B CN108004985 B CN 108004985B
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- steel cable
- shearing
- strip
- front support
- connecting device
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F15/00—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
- E01F15/02—Continuous barriers extending along roads or between traffic lanes
- E01F15/06—Continuous barriers extending along roads or between traffic lanes essentially made of cables, nettings or the like
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F15/00—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
- E01F15/02—Continuous barriers extending along roads or between traffic lanes
- E01F15/04—Continuous barriers extending along roads or between traffic lanes essentially made of longitudinal beams or rigid strips supported above ground at spaced points
- E01F15/0407—Metal rails
- E01F15/0423—Details of rails
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F15/00—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
- E01F15/02—Continuous barriers extending along roads or between traffic lanes
- E01F15/04—Continuous barriers extending along roads or between traffic lanes essentially made of longitudinal beams or rigid strips supported above ground at spaced points
- E01F15/0407—Metal rails
- E01F15/0438—Spacers between rails and posts, e.g. energy-absorbing means
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
Abstract
The invention discloses a connecting device of a flexible steel cable guard rail. In particular, the device is provided with a ring column sleeve (1), the ring column sleeve (1) is provided with a pair of front supporting arms (2) which are symmetrically arranged, and at least one shearing structure with shearing strength smaller than the bending strength of the front supporting arms (2) is arranged. The invention can effectively connect the pile of the flexible protective guard with the steel cable, can efficiently transmit impact energy and effectively prolong the impact time, thereby achieving the purpose of improving the arresting of the protective guard on an impacting vehicle.
Description
The technical field is as follows:
the invention relates to a connecting device, in particular to a connecting device for connecting a connecting pile and a protective plate (cable) of a highway protective guard.
Background art:
the existing guard rail of the expressway is generally a guard rail of a wave-shaped beam structure or a steel cable structure, wherein both guard rails are provided with a stop block between a pile and the wave-shaped beam (steel cable), the stop block is used for connecting the wave-shaped beam (steel cable) with the pile, the stop block is generally in an n shape, two end parts of the stop block are connected with the pile, a plane part of the stop block is connected with the wave-shaped beam (steel cable), the stop block is generally formed by rolling a thin steel plate and has certain strength, a distance is reserved between the plane part of the stop block and the pile, and when a moving vehicle collides with the guard rail, the stop block can deform under the pulling force of the wave-shaped beam or the steel cable and simultaneously transmits the force to the pile and the wave-shaped beam or the steel cable on the other side; the anti-blocking block with the structure has the advantages that the anti-blocking block is small in strength or bending strength, can be rapidly deformed and is superposed in the elastic deformation of the corrugated beam or the steel cable when being subjected to lateral tension, and the space between the plane part of the anti-blocking block and the pile column provides a deformation space, so that the deformation time or the deformation space scale of the anti-blocking block is increased to a certain extent, but the anti-blocking block is easy to deform, so that the capacity of transferring stress to the pile column is reduced; at present, there are some improved structures for the above-mentioned anti-blocking block, which generally add elastic material such as rubber-plastic material in the above-mentioned pi-shaped structure to increase the impact resistance, but the main starting point of the improvement is to directly impact the anti-blocking block on the vehicle, in fact, the above-mentioned rubber-plastic material is not enough to compare with the huge kinetic energy of the moving vehicle, no matter the strength and energy absorption efficiency, and the improvement is of no material significance.
The applicant believes that the anti-snag, also called a connection device, plays a very important role in the guard rail, not only as a connection device between the pile and the corrugated beam or steel cable, but also as an effective and reasonable rapid energy transfer to the right place in the system after an impact has occurred.
The invention content is as follows:
the invention aims to disclose a connecting device capable of effectively connecting a pile column of a flexible protective guard and a steel cable, which can efficiently transmit impact energy and effectively prolong the impact time so as to improve the arresting of the protective guard on an impacting vehicle.
The technical solution for realizing the invention is as follows: the device is provided with a ring column sleeve, wherein the ring column sleeve is provided with a pair of front supporting arms which are symmetrically arranged, and at least one shearing structure with the shearing strength smaller than the bending strength of the front supporting arms is arranged.
The bending strength of the front supporting arm is 50-90% of the tensile strength of the steel cable.
The length of the front supporting arm is 10-12 cm.
The shearing structure is a first shearing structure matched with the front supporting arm, and the first shearing structure is as follows: the clamping piece is provided with a clamping piece for clamping the steel cable, the embedded end of the clamping piece is matched with the opening of the front supporting arm, the clamping piece is provided with a first blocking part, and the tail end of the clamping piece is provided with a second blocking part.
The shear strength of the first blocking part is smaller than the bending strength of the front support arm, and the shear strength of the second blocking part is larger than the bending strength of the front support arm.
The ring post cover be equipped with the second shear structure, the second shear structure is: the inner surface of the ring column sleeve is provided with a strip convex part or a strip concave part which is axially arranged.
The cross section of the strip-shaped convex part or the strip-shaped concave part is rectangular, triangular or frustum-shaped.
The ring post cover be equipped with third shear structure, third shear structure is: the wall surface of the ring column sleeve is provided with a strip-shaped through hole, and the strip-shaped through hole is provided with a penetrating stud.
The shearing strength of the strip-shaped convex part in the second shearing structure is greater than that of the first blocking part in the first shearing structure.
The shear strength of the stud in the third shear structure is greater than or less than or equal to the shear strength of the first blocking part and the strip-shaped convex part in the first shear structure and the second shear structure.
The ring column is sleeved with two pairs of symmetrical front support arms or provided with three pairs of symmetrical front support arms.
The shear strength of the stud, the first blocking part and the strip-shaped convex part is smaller than the tensile strength of the steel cable.
And a rear supporting arm is arranged on the other side of the ring column sleeve, which is symmetrical to the front supporting arm.
After the invention comprehensively analyzes the basic structure of the steel cable guard railing and the mechanical behavior of the system after the impact occurs, it is believed that the connection means in the steel cable guard rail, i.e. the prior art arresting blocks, are most complicated to deform during an impact and play an important role in the arresting effect of the guard rail, and therefore the connection means are innovatively designed, the design makes the connecting device of the invention firstly transmit the impact energy to the pile and the soil foundation efficiently, absorb the maximum impact energy by the soil foundation, at the same time, the specially designed shearing structure of the invention can interrupt the continuous impacting process into at least more than two discontinuous small continuous processes, this allows the tensile force experienced by the steel cable to begin to increase again after returning to a near zero condition before reaching yield limit, multiplying the overall impact time, the impact energy can be transmitted to the far sides of the impact point for sufficient time to disperse the impact energy. Therefore, the connecting device is more scientific in design and can effectively block vehicles, is an innovative new connecting device obtained under different design principles, and has an excellent protection effect on running vehicles and passengers on the highway.
Description of the drawings:
fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic structural view of another embodiment of the collar.
Fig. 3 is a side view of the structure of fig. 1.
The specific implementation mode is as follows:
the embodiments of the present invention are provided in conjunction with the accompanying drawings of the specification, and it should be noted that the description of the embodiments of the present invention is made for the understanding of the technical spirit of the present invention, and should not be construed as limiting the scope of the claims of the present invention.
Referring to fig. 1 to 3, the embodiment of the present invention is as follows: the device is provided with a ring column sleeve 1, wherein the ring column sleeve 1 is provided with a pair of front support arms 2 which are symmetrically arranged, and at least one shearing structure with shearing strength smaller than the bending strength of the front support arms 2 is arranged; when the protective guard is actually used, the ring column sleeve 1 is sleeved and connected with the pile column of the protective guard, and the protective guard has the advantages that the ring column sleeve 1 has enough strength, particularly, after impact occurs, the ring column sleeve 1 is possibly damaged only when being subjected to strong enough pulling force, the front support arm 2 arranged on the ring column sleeve 1 is connected with a shearing structure with shearing strength smaller than the bending strength of the front support arm 2, and the shearing structure is connected with a steel cable of the protective guard; after the collision, the steel cable is stretched and the front support arm 2 is subjected to a lateral force through the shearing structure to have a bending tendency, finally the front support arm 2 transmits the stress to the soil foundation through the annular column sleeve 1, and because the steel cable and the shearing structure, the shearing structure and the front support arm 2 as well as the front support arm 2 are fixedly and tightly connected with each other through the annular column sleeve 1 and the pile, the collision force can be rapidly transmitted to the soil foundation and far sides of a collision point before all the components are in elastic deformation (or before one of all the components is not damaged), the stress of all the components can be rapidly raised and the collision energy can be transmitted to the soil foundation in a large amount in the elastic deformation stage, and a part of the collision energy can be transmitted to the far sides until one of the components is damaged or the moving vehicle stops or is separated from the collision state to finish the collision process; in the collision process, firstly, the steel cable is prevented from being damaged due to the fact that the steel cable reaches the tensile yield limit, and secondly, the connecting device is prevented from being damaged, so that the shearing structure with the shearing strength smaller than the bending strength of the front support arm 2 is arranged, the shearing structure can generate a shearing phenomenon under the action of shearing force, the steel cable and the front support arm 2 are still in an elastic deformation stage, the shearing structure generates a shearing phenomenon but the whole connecting steel cable is not damaged, at the moment of the shearing, the shearing structure generates a movement with extremely short time and no resistance or nearly zero resistance in a pulling mode under the action of the steel cable, and at the moment, the tensile tension in the steel cable is close to zero, namely the tensile tension of the steel cable is suddenly reduced to be close to zero tension from the shearing strength value of the shearing structure; when the shearing structure finishes the movement in the non-resistance state and is subjected to the resistance of the front supporting arm 2, the tensile tension applied to the steel cable is increased again from the nearly zero state and is in a new elastic deformation process, so the connecting device is provided with the shearing structure which can separate the continuous impact process into two impact processes, the duration time of the impact is increased, and the final result is that more over impact energy is transmitted to the soil foundation and farther from two sides of an impact point, and simultaneously, the moving vehicle has more time to slide or turn or leave the impact state, thereby improving the blocking effect of the protective guard.
In the stress state and action of the connecting device in the whole system of the protective guard, the applicant considers that the bending strength of the front support arm 2 of the connecting device is an important parameter, so that the bending strength of the front support arm 2 is 50-90% of the tensile strength of a steel cable, the front support arm 2 has enough strength to ensure that the front support arm 2 does not change in the early and middle stages of impact, impact energy can be rapidly transmitted to a soil foundation, when the lateral pressure on the front support arm 2 reaches a certain higher value, the shearing structure generates a shearing phenomenon, so that the steel cable and the front support arm 2 generate a zero stress state in a very short time, and the stress state is recovered again; the design of the high bending strength of the front support arm 2 is substantially different from the design mechanism of the anti-blocking block in the prior art, in order to further improve the bending resistance of the front support arm 2, the length of the front support arm 2 is 10-12 cm, so that the moment when the front support arm 2 is subjected to lateral pressure is smaller, the bending resistance of the front support arm 2 is improved, and the impact force can be rapidly transmitted to the soil foundation.
The function of the shear structure during impact has been detailed above, said shear structure being a first shear structure cooperating with the front support arm 2, the first shear structure being: the clamping piece 3 is used for clamping a steel cable, an embedded end 4 of the clamping piece 3 is matched with an opening 5 of the front supporting arm 2, the clamping piece 3 is provided with a first blocking part 6, and the tail end of the clamping piece 3 is provided with a second blocking part 7; in practical use, the embedded end 4 is tightly matched with the opening 5 to realize the connection of the clamping piece 3 and the front support arm 2, the first blocking part 6 of the clamping piece 3 is contacted with the surface of the front support arm 2, after the collision and the triggering, the steel cable is forced to pull the clamping piece 3 to generate a movement or a movement trend, the surface part of the first blocking part 6 of the clamping piece 3 contacted with the front support arm 2 is substantially a blocking surface for blocking the movement of the clamping piece 3 and the steel cable, the front support arm 2 and the first blocking part 6 are both subjected to a lateral force, under the action of the lateral force, the front support arm 2 has a bending trend, the first blocking part 6 also has a bending or shearing trend, along with the increase of the tensile tension of the steel cable, when the lateral force received by the first blocking part 6 is greater than the self shearing strength, the first blocking part 6 is dropped, and at the moment when the first blocking part 6 is sheared, the steel cable, the clamping piece 3 and the front support arm 2 are in an unstressed state, the clamping piece 3 moves in an accelerated manner until the second blocking part 7 at the tail part of the clamping piece 3 is contacted with the surface of the front support arm 2, so that the displacement of the clamping piece 3 is blocked, and from the moment when the clamping piece 3 is blocked again, the stressed states of the steel cable, the clamping piece 3 and the front support arm 2 are reestablished, namely, the impact process is divided into two impact processes, so that the impact time is prolonged; in the above-mentioned shearing structure, it is important that the shearing strength of the first stopper 6 of the clamping member 3 is smaller than the bending strength of the front support arm 2, the first stopper 6 of the front support arm 2 is sheared off in a slight elastic deformation stage, and the shearing strength of the second stopper 7 is greater than the bending strength of the front support arm 2, so as to ensure that the second stopper 7 is not sheared off, and of course, the first stopper 6 provided on the clamping member 3 may be provided on the clamping member 3, or may be provided at a proper position of the front support arm 2, that is, a mutually contacting portion capable of being sheared off is formed between the front support arm 2 and the clamping member 3.
In addition to the first shearing structure, the present invention further provides a second shearing structure, wherein the second shearing structure is: the inner surface of the ring column sleeve 1 is provided with a strip convex part 8 or a strip concave part 9 which is axially arranged; when in practical use, the ring column sleeve 1 is sleeved with a pile column of the protective guard, the surface of the pile column is provided with a concave part correspondingly matched with the strip-shaped convex part 8 or a convex part correspondingly matched with the strip-shaped concave part 9, a resistance surface for the ring column sleeve 1 to rotate around the pile column is formed between the convex parts and the concave parts which are matched with each other, after the collision occurs, when the front support arm 2 is acted by lateral force, the whole connecting device has a movement trend of rotating around the pile column, the resistance surface can prevent the movement trend of the rotation, when the acting force applied to the ring column sleeve 1 is large enough, the resistance surface is sheared by enough shearing force, the ring column sleeve 1 can have an unstressed rotation motion around the pile column, when the rotation of the ring column sleeve 1 is hindered again or is in a state of no longer rotating, each part of the whole protective guard system comprises the connecting device, and the effect of the collision force is exerted on the vehicle due to continuous collision, the impact process is divided into an intermittent process again, the time of the impact process is prolonged again, and the impact energy is further transmitted to the soil foundation and is transmitted to a remote place; the cross section of the strip-shaped convex part 8 or the strip-shaped concave part 9 is rectangular, triangular or frustum-shaped, if the strip-shaped convex part 8 is rectangular, the shear strength is high, and the strip-shaped convex part can be integrally sheared when being stressed, if the strip-shaped convex part 8 is triangular, a part of the triangle can be sheared when the shear occurs, and the ring column sleeve 1 can rotate on the residual part, so the shear strength is low, and the shear strength of the frustum-shaped strip-shaped convex part 8 is more intermediate than that of the frustum-shaped strip-shaped convex part, and the specific cross section is selected according to the strength requirement.
The invention is also provided with a third shearing structure to reduce the stress of the guard rail system in the whole collision process to a state close to zero again, wherein the third shearing structure is as follows: the wall surface of the ring column sleeve 1 is provided with a strip-shaped through hole 10, and the strip-shaped through hole 10 is provided with a penetrating stud 11; in practical use, the stud 11 penetrates through the collar post sleeve 1 and the wall surface of the pile to connect the collar post sleeve 1 and the pile, because the stud 11 is located at a certain position of the strip-shaped through hole 10, and the stud 11 and the end of the strip-shaped through hole 10 are both at a certain distance, for example, the length of the strip-shaped through hole 10 is 2-3 times the diameter of the stud 11, when the strip-shaped convex part 8 in the second shearing structure is sheared, the distance between the stud 11 and the end of the strip-shaped through hole 10 is the distance that the collar post sleeve 1 rotates in an unstressed state, then the moment that the stud 11 contacts the end of the strip-shaped through hole 10 is the moment that the collar post sleeve 1 receives impact force again, the stress of the whole guard fence is re-established again, when the force accumulation is increased sufficiently, the stud 11 is sheared by the side wall of the collar post sleeve 1, the collar post sleeve 1 is in an unstressed rotating state, and the effect is the same as the effect described above, and will not be described in detail. In summary, the embodiment of the present invention has three shearing structures, which can interrupt the continuous stress of the impact process three times, that is, the tensile tension of the steel cable is suddenly reduced to a state close to zero stress due to the existence of the shearing structures when reaching a certain strength, which can greatly or doubly increase the duration of the impact process, so that the impact energy is transmitted to the soil foundation as much as possible and to the distant positions on both sides of the impact point, thereby greatly improving the arresting effect of the steel cable guard rail.
It should be further noted that when three shearing structures are applied, in order to make the arresting effect of the whole guard rail better, the shearing strength of the strip-shaped convex part 8 in the second shearing structure is greater than that of the first blocking part 6 in the first shearing structure, so that the first blocking part 6 can be firstly sheared off in the impact process, and the rotation of the ring column sleeve 1 caused by the fact that the strip-shaped convex part 8 is firstly sheared off can be avoided, and the stress of the steel cable can be transmitted to the soil foundation to the maximum extent; the shear strength of the stud 11 in the third shearing structure is greater than or less than or equal to the shear strength of the first blocking part 6 and the strip-shaped convex part 8 in the first shearing structure and the second shearing structure, after the connecting device and the pile device with three shearing structures are actually arranged, the strip-shaped convex part 8 and the corresponding concave part of the matched pile play a role in positioning, when the connecting device is pulled by a steel cable and tends to rotate, the stress of the stud 11 is limited before the strip-shaped convex part 8 is sheared off, so the stud 11 is a part which is sheared off finally, the selection of the shear strength of the stud 11 is relatively high in degree of freedom, but the shear strength of the stud 11 is very important, and especially different road sections and medium and small vehicles which require blocking are also small and medium vehicles, different selections are meaningful.
In order to further improve the arresting effect of the steel cable guard rail, the effect of the plurality of steel cables arranged on the guard rail when an impact occurs needs to be considered comprehensively and carefully, particularly because the plurality of steel cables are positioned at different heights from the road surface, in addition to the pair of symmetrical front support arms 2 arranged on the ring column sleeve 1, two pairs of symmetrical front support arms 2 are arranged on the ring column sleeve 1, or three pairs of symmetrical front support arms 2 are arranged on the ring column sleeve 1, when the guard rail is provided with the plurality of steel cables, a sufficient choice is made as to what kind of ring column sleeve 1 and/or what kind of combination of ring column sleeve 1 is arranged on the pile column, so as to meet different requirements of different road sections on the number of the steel cables and exert the optimal synergistic effect of the steel cables.
The shear strength of the stud 11, the first blocking part 6 and the strip-shaped convex part 8 of the connecting device is smaller than the tensile strength of the steel cable, namely the first blocking part 6, the strip-shaped convex part 8 and the stud 11 are cut off or sheared off before the steel cable so as to ensure the final arresting effect of the steel cable; and the shear strength of the first blocking part 6 and the strip-shaped convex part 8 is smaller than the bending strength of the front support arm 2, namely the front support arm 2 has enough bending strength, so that on one hand, the shear structure is ensured to play a role of prolonging the impact time, and meanwhile, the enough bending strength can avoid the deformation of the front support arm 2 to reduce the capacity of preferentially transmitting the impact energy to the soil foundation.
The structure of the connecting device is that the ring column sleeve 1 is provided with the front support arm 2, which is suitable for the guard railings arranged at two sides of the highway, in order to further improve the blocking effect of the steel cable guard railing and increase more requirements of use, the other side of the ring column sleeve 1, which is symmetrical to the front support arm 2, is provided with the rear support arm 12, the rear support arm 12 is also provided with the steel cable, so that two layers of steel cables can be formed to increase the blocking effect, and the guard railing with the two layers of steel cables is more suitable for being arranged in the middle of the highway to isolate vehicles running in two directions.
The high bending strength and the small moment of the front support arm 2 under stress of the invention can transmit the impact energy to the soil foundation to the maximum extent, and the at least one shearing structure which is specially arranged can greatly increase the time of the impact process, so that more impact energy can be transmitted to the soil foundation and far away from both sides of the impact point, thereby dispersing the impact energy. The invention has excellent arresting effect and has excellent effects on the safety of the highway, the arrangement and the maintenance of the guard railing and the like.
Claims (11)
1. A connecting device of a flexible steel cable protective guard is characterized by comprising a ring column sleeve (1), wherein the ring column sleeve (1) is provided with a pair of front supporting arms (2) which are symmetrically arranged, and at least one shearing structure with shearing strength smaller than the bending strength of the front supporting arms (2) is arranged; the shearing structure is a first shearing structure matched with the front supporting arm (2), and the first shearing structure is as follows: the clamping device is provided with a clamping piece (3) for clamping a steel cable, an embedded end (4) of the clamping piece (3) is matched with an opening (5) of the front supporting arm (2), the clamping piece (3) is provided with a first blocking part (6), and the tail end of the clamping piece (3) is provided with a second blocking part (7); the shear strength of the first blocking part (6) is smaller than the bending strength of the front support arm (2), and the shear strength of the second blocking part (7) is larger than the bending strength of the front support arm (2).
2. A connecting device of a flexible steel cable guard rail according to claim 1, wherein the bending strength of the front support arm (2) is 50-90% of the tensile strength of the steel cable.
3. A connector for a flexible steel cable guard rail according to claim 1 wherein the length of the front support arm (2) is 10 to 12 cm.
4. A connecting device of a flexible steel cable guard rail according to claim 1 or 2 or 3, characterized in that said collar (1) is provided with a second shearing structure, said second shearing structure being: the inner surface of the ring column sleeve (1) is provided with a strip convex part (8) or a strip concave part (9) which is axially arranged.
5. A connecting device of a flexible steel cable guard rail according to claim 4, characterized in that the cross-sectional shape of the strip-shaped protrusions (8) or the strip-shaped recesses (9) is rectangular, triangular or frustum-shaped.
6. A connecting device of a flexible steel cable guard rail according to claim 5, characterized in that said collar (1) is provided with a third shearing configuration, said third shearing configuration being: the wall surface of the ring column sleeve (1) is provided with a strip-shaped through hole (10), and the strip-shaped through hole (10) is provided with a penetrating stud (11).
7. A connector for a flexible steel cable guard rail according to claim 6 wherein the shear strength of the strip-like projections (8) in the second shearing configuration is greater than the shear strength of the first stops (6) in the first shearing configuration.
8. A connecting device of a flexible steel cable guard rail according to claim 7, characterized in that the shear strength of the studs (11) in the third shear structure is greater than or equal to the shear strength of the first stops (6) and the strip-shaped protrusions (8) in the first and second shear structures.
9. A connecting device of a flexible steel cable guard rail according to claim 1 or 2 or 3 or 5 or 6 or 7 or 8, characterized in that said collar (1) is provided with two pairs of symmetrical front support arms (2) or with three pairs of symmetrical front support arms (2).
10. A connecting device of a flexible steel cable guard rail according to claim 9, characterized in that the shear strength of the stud (11), the first stop (6) and the strip-shaped protrusion (8) is less than the tensile strength of the steel cable.
11. A connection device of a flexible steel cable guard rail according to claim 10, characterized in that the other side of the collar (1) symmetrical to the front support arm (2) is provided with a rear support arm (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711120880.6A CN108004985B (en) | 2017-11-08 | 2017-11-08 | Connecting device of flexible steel cable protective guard |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711120880.6A CN108004985B (en) | 2017-11-08 | 2017-11-08 | Connecting device of flexible steel cable protective guard |
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| Publication Number | Publication Date |
|---|---|
| CN108004985A CN108004985A (en) | 2018-05-08 |
| CN108004985B true CN108004985B (en) | 2020-04-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711120880.6A Active CN108004985B (en) | 2017-11-08 | 2017-11-08 | Connecting device of flexible steel cable protective guard |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110735412B (en) * | 2019-10-31 | 2023-07-18 | 徐州蓝湖信息科技有限公司 | Road safety barrier |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2797433Y (en) * | 2005-06-28 | 2006-07-19 | 季钢焰 | Jointing locking device for flexible protection fence on high-grade highway |
| CN104047246A (en) * | 2014-07-10 | 2014-09-17 | 四川金城栅栏工程有限公司 | Middle-section upright connecting structure for hawser guard bar |
| CN204199210U (en) * | 2014-11-13 | 2015-03-11 | 王立明 | A kind of hanging-connecting Cable Barrier upright post connection structure |
| WO2017144952A1 (en) * | 2016-02-26 | 2017-08-31 | Praesidiad Nv | Anchoring device for a fence |
-
2017
- 2017-11-08 CN CN201711120880.6A patent/CN108004985B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2797433Y (en) * | 2005-06-28 | 2006-07-19 | 季钢焰 | Jointing locking device for flexible protection fence on high-grade highway |
| CN104047246A (en) * | 2014-07-10 | 2014-09-17 | 四川金城栅栏工程有限公司 | Middle-section upright connecting structure for hawser guard bar |
| CN204199210U (en) * | 2014-11-13 | 2015-03-11 | 王立明 | A kind of hanging-connecting Cable Barrier upright post connection structure |
| WO2017144952A1 (en) * | 2016-02-26 | 2017-08-31 | Praesidiad Nv | Anchoring device for a fence |
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| CN108004985A (en) | 2018-05-08 |
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