CN215976980U - Energy-absorbing buffering protection type height limiting frame - Google Patents

Abstract

The invention relates to an energy-absorbing buffering protection type height limiting frame, which adopts the main technology that a bearing beam and a buffering beam are fixedly connected together through a set steel plate spring, two sides of a road surface are respectively provided with a balancing weight, the balancing weight is connected with a vertical guiding device, a compression spring is arranged in the balancing weight, the balancing weight is connected with a steel wire rope through the compression spring, the steel wire rope firstly compresses the compression spring when being tensioned, the compression spring is compressed to a certain degree and then drives the balancing weight to move along the direction of the tension of the steel wire rope, and the other end of the steel wire rope passes through a fixed pulley and a grooved pulley arranged at the end part of the buffering beam at the side to be connected and fixed with the end part of the bearing beam at the side.

Description

Energy-absorbing buffering protection type height limiting frame

Technical Field

The invention belongs to the field of traffic infrastructure, and particularly relates to a height limiting protection frame with an energy absorption buffer protection function.

Background

When facilities such as railway or highway bridges and culverts, water channels, heating power pipelines and the like cross roads, in order to prevent motor vehicles running on the roads from impacting the facilities due to superelevation, the structure safety of the facilities is ensured, a height-limiting protective frame is generally arranged at a certain distance away from the facilities, the existing height-limiting protective frame is formed by welding section steels such as round steel pipes, channel steel or I-steel, and the like, and the structural form of the protective frame is approximately as follows: one is a single-rod beam structure. The crossbeam of the height limiting frame is made of section steel, the stand columns on two sides are single columns, and the crossbeam and the stand columns are welded or bolted, so that the height limiting frame is generally suitable for the conditions of small height limitation and narrow road surface width. The other is a vertical truss type beam structure, the beam of the height limiting frame is a single vertical truss, the upright columns on two sides are single columns, the back car surface of each upright column is provided with an inclined strut to increase the longitudinal bending rigidity, and the beam and the upright columns are welded or bolted, so that the height limiting frame is generally suitable for the conditions of height limitation and larger road surface width. And thirdly, the horizontal truss type beam structure is adopted, the beam of the height limiting frame is a single horizontal truss, the stand columns on two sides are double columns, two single columns of the stand column on each side correspond to chords of the horizontal truss, the single columns are connected in a cross connection mode, the beam and the stand columns are welded or bolted, and the height limiting frame is generally suitable for the condition of large height limiting and large road surface width.

When an ultrahigh motor vehicle collides with a height-limiting protective frame, the following three failure modes generally exist: the first is that the strength and rigidity of the height-limiting protective frame are enough to resist the impact of the motor vehicle, so that the motor vehicle is damaged, and the upper part of the double-layer bus is cut by the height-limiting protective frame for many times in China, so that the accidents of personnel injury are caused. The second is that the intensity at limit for height protection frame connection position is not enough, and the crossbeam collapses under the motor vehicle striking, and the crossbeam weight of adopting the steel construction to make is great, smashes not only can make the motor vehicle impaired on the motor vehicle, can cause personnel's injury in the driver's cabin moreover. The third is that the energy of the motor vehicle collision is large, the strength of the height limiting frame or the connecting part thereof is insufficient, the motor vehicle cannot be effectively prevented, and the motor vehicle collides buildings such as bridges and culverts with the surplus speed after damaging the height limiting protective frame, and particularly when the motor vehicle collides a railway bridge, the running safety of the railway is seriously threatened.

The purpose of the design and the arrangement of the existing height-limiting protection frame is only to protect the structural safety of a protected building, and the safety of personnel on a motor vehicle is not considered. The automobile height limiting protection frame is made of a steel structure, although the strength and the rigidity are high, the weight is also high, when the automobile collides with the height limiting protection frame, potential energy generated by the mass and the speed of the automobile is borne by the height limiting protection frame, the height limiting protection frame has no energy absorption and buffering functions and can only bear passively, and once the potential energy is not borne, the automobile collapses to cause personal injuries and deaths or cannot be prevented from impacting buildings such as bridges and culverts.

Although the prior art disclosed in the prior art has different types of height-limiting frames which can consume energy generated by ultra-high vehicle impact, reduce casualty accidents caused by beam collapse and other related traffic and safety and traffic facility serious accidents caused by the same, the height-limiting frames have more or less corresponding defects. For example: the Chinese invention application number is 201510536909.3, the grant notice number is CN105155439B, and the name is 'a road height limiting frame', a plurality of arresting rods are arranged on a supporting beam along the length direction of the supporting beam, and the arresting rods allow a height limiting beam to slide along the length direction of the supporting beam through self bending deformation when the height limiting beam is impacted by a vehicle, so that the purpose of absorbing impact energy is achieved, but obviously, the height limiting beam cannot be reset when being impacted and separated from an original position, and cannot achieve the due effect on subsequent running ultrahigh vehicles, so that corresponding safety accidents are inevitably generated. For another example: the application numbers of the Chinese invention are: 201511003781.0, application publication No. CN105464018A, entitled "weight buffering formula height-limiting frame", though utilize the counter weight of weight to pass through wire rope tractive height-limiting rod, have certain buffer function, because the weight will be arranged in the deep well, it is easy to harm the road bed and cause the road bed unstability to excavate the deep well, simultaneously, because the stroke of buffering is decided by the degree of depth of deep well, if need great buffer stroke, must excavate deeper deep well, the construction degree of difficulty all has great defect with safe risk and construction cost, in addition, because longer wire rope is in the exposed state, in case wire rope bursts apart, injures the pedestrian easily, consequently still has the incident that causes injury pedestrian easily. For another example: the application is the published technology of invention patent grant publication No. CN111101458B, named as ' a height-limiting protection frame with energy-absorbing and buffering functions ' which is ' railway building institute of China railway science institute group, Inc. ' and ' China railway group, Inc. ' of China railway science institute group, Inc. ', the main components of the composite energy absorbing and absorbing device are round pipes or square pipes and stiffening ribs made of composite materials, and energy absorbing and buffering materials are filled in the components or coated outside the components to achieve the purpose of absorbing the energy of vehicle impact, although the height limiting frame has a certain energy absorption and buffering function, the composite material is generally expensive, therefore, the manufacturing cost is high, especially because the buffer material can not be wrapped thick, therefore, the buffer distance is limited, reducing the driver reaction time, and therefore, there is a certain safety risk. There are many similar problems in the prior art disclosures, which are not listed here.

In view of the above-mentioned drawbacks of the existing height-limiting frame, it is a urgent need for those skilled in the art to develop a new height-limiting frame to solve the above-mentioned problems.

Disclosure of Invention

The technical scheme adopted by the invention for realizing the purpose is as follows: the energy-absorbing buffering protection type height limiting frame comprises two front upright columns 1 which are vertically erected on two sides of a road surface 17 and located in the front of running of a vehicle, two rear upright columns 2 which are vertically erected on two sides of the road surface 17 and located in the rear of running of the vehicle, an upper horizontal guide rod 3 and a lower horizontal guide rod 4 which are fixedly connected in sequence from top to bottom at the upper part between the front upright column 1 and the rear upright column 2 on each side of the road surface 17, the upper horizontal guide rod 3 and the lower horizontal guide rod 4 are parallel to each other, a rectangular guide space 16 is formed between the upper horizontal guide rod 3 and the lower horizontal guide rod 4, and a bearing beam 5 and a buffer beam 6 are arranged in the guide spaces 16 on the two sides of the road surface 17 in a sliding manner along the front-back direction of running of the vehicle, and the energy-absorbing buffering protection type height limiting frame is characterized in that: the load-bearing beam 5 and the buffer beam 6 are fixedly connected together through a set steel plate spring 14, two sides of a road surface 17 are respectively provided with a balance weight block 12, the balance weight blocks 12 are connected with a vertical guide device 10, the vertical guide device 10 limits the freedom degree of the balance weight blocks 12 but does not limit the freedom degree of the up-and-down movement, a bracket 7 is fixedly arranged right above each balance weight block 12, the bracket 7 is provided with a fixed pulley 8, each balance weight block 12 is internally provided with a compression spring 13, each balance weight block 12 is connected with a steel wire rope 11 through the compression spring 13, the steel wire rope 11 firstly compresses the compression spring 13 when being tensioned, after the compression spring 13 is compressed to a certain degree, the balance weight blocks 12 are driven to move along the direction of the tension of the steel wire rope 11, the other end of the steel wire rope 11 passes through the fixed pulley 8 and crosses a grooved pulley 15 arranged at the end part of the buffer beam 6 at the side, the steel wire rope is fixedly connected with the end part of the bearing beam 5 on the side, and in order to prevent the steel wire rope 11 from being broken and thrown out to cause safety to vehicles and pedestrians, the steel wire rope 11, the bracket 7, the fixed pulley 8, the vertical guide device 10, the balancing weight 12 and the compression spring 13 are surrounded and covered by the protective cover 9.

The working principle and the process of the invention are as follows: in the process of advancing of the vehicle, if the height of the bumper beam 6 is higher than the height of the bumper beam 6, the bumper beam 6 is firstly pushed to move forwards, a part of energy is firstly absorbed by the steel plate spring 14, then the bearing beam 5 is pushed to move forwards, after the bearing beam 5 moves forwards, the steel wire rope 11 is tensioned by the bearing beam 5, the compression spring 13 is pressed tightly, a part of energy is absorbed to play a role in buffering, and then after the compression spring 13 is compressed to a certain degree, the counterweight block 12 is driven to move in the direction of the tension of the steel wire rope 11.

Has the advantages that: according to the working principle and the working process of the invention, the steel plate spring and the compression spring are firstly compressed and absorb energy when a vehicle is impacted, so that the energy-absorbing buffer device has the advantage of better energy-absorbing and buffering functions, can effectively avoid the damage of the vehicle and the height-limiting frame caused by the impact of the vehicle, and particularly can effectively avoid the major safety accident of casualties; secondly, the counterweight block is arranged on the ground, so that the invention has the advantages of easy construction and low construction cost; the buffering stroke of the buffering beam can be adjusted by adjusting and setting the height of the pulley; moreover, the buffer motion part is covered by the protective cover, so that the safety of vehicles and pedestrians caused by throwing out of the buffer motion part due to breakage of the steel wire rope can be avoided.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is a view taken along direction A of FIG. 1;

shown in the figure: the device comprises a front upright post 1, a rear upright post 2, an upper horizontal guide rod 3, a lower horizontal guide rod 4, a bearing beam 5, a buffer beam 6, a support 7, a fixed pulley 8, a protective cover 9, a vertical guide device 10, a steel wire rope 11, a counterweight 12, a compression spring 13, a steel plate spring 14, a sheave 15, a guide space 16, a road surface 17 and a vehicle running direction B.

Detailed Description

With reference to fig. 1 and 2, the embodiment of the present invention is: an energy-absorbing buffering protection type height limiting frame comprises two front upright columns (1) which are vertically erected on two sides of a road surface (17) and are positioned in front of running vehicles, two rear upright columns (2) which are vertically erected on two sides of the road surface (17) and are positioned in rear of running vehicles, an upper horizontal guide rod (3) and a lower horizontal guide rod (4) are sequentially connected and fixed at the upper part between the front upright columns (1) and the rear upright columns (2) on each side of the road surface (17) from top to bottom, the upper horizontal guide rod (3) and the lower horizontal guide rod (4) are parallel to each other, rectangular guide spaces (16) are formed between the upper horizontal guide rod (3) and the lower horizontal guide rod (4), a bearing beam (5) and a buffer beam (6) are slidably arranged in the guide spaces (16) on two sides of the road surface (17) and in the front-back direction of running vehicles respectively, the method is characterized in that: the bearing beam (5) and the buffer beam (6) are fixedly connected together through a set steel plate spring (14), two sides of a road surface (17) are respectively provided with a balancing weight (12), the balancing weight (12) is connected with a vertical guide device (10), the vertical guide device (10) limits the degree of freedom of the balancing weight (12) but does not limit the degree of freedom of up-and-down movement, a support (7) is fixedly arranged right above each balancing weight (12), the support (7) is provided with a fixed pulley (8), a compression spring (13) is arranged in each balancing weight (12), each balancing weight (12) is connected with a steel wire rope (11) through the compression spring (13), the steel wire rope (11) firstly compresses the compression spring (13) when being tensioned, and after the compression spring (13) is compressed to a certain degree, then the counterweight block (12) is driven to move along the direction of the pulling force of the steel wire rope (11), the other end of the steel wire rope (11) penetrates through the fixed pulley (8) and crosses a grooved pulley (15) arranged at the end part of the buffer beam (6) at the side where the steel wire rope (11) is located, then the steel wire rope (11), the support (7), the fixed pulley (8), the vertical guide device (10), the counterweight block (12) and the compression spring (13) are fixedly connected with the end part of the bearing beam (5) at the side where the steel wire rope (11) is located, and in order to prevent the safety of vehicles and pedestrians caused by throwing out of the broken steel wire rope (11), the support (7), the fixed pulley (8), the vertical guide device (10), the counterweight block (12) and the compression spring (13) are surrounded and covered by the protective cover (9).

Claims (2)

1. The utility model provides an energy-absorbing buffering protection formula limit for height frame, characterized by: the bearing beam (5) and the buffer beam (6) are fixedly connected together through a set steel plate spring (14), two sides of a road surface (17) are respectively provided with a balancing weight (12), the balancing weight (12) is connected with a vertical guide device (10), the vertical guide device (10) limits the degree of freedom of the balancing weight (12) but does not limit the degree of freedom of up-and-down movement, a support (7) is fixedly arranged right above each balancing weight (12), the support (7) is provided with a fixed pulley (8), a compression spring (13) is arranged in each balancing weight (12), each balancing weight (12) is connected with a steel wire rope (11) through the compression spring (13), the steel wire rope (11) firstly compresses the compression spring (13) when being tensioned, and after the compression spring (13) is compressed to a certain degree, then the counterweight block (12) is driven to move along the direction of the pulling force of the steel wire rope (11), and the other end of the steel wire rope (11) passes through the fixed pulley (8) and a grooved pulley (15) arranged at the end part of the buffer beam (6) on the side where the fixed pulley is located, and then is fixedly connected with the end part of the bearing beam (5) on the side where the fixed pulley is located.

2. The energy-absorbing, buffering and protecting type height limiting frame as claimed in claim 1, wherein: the protective cover (9) covers the steel wire rope (11), the bracket (7), the fixed pulley (8), the vertical guide device (10), the balancing weight (12) and the compression spring (13) in a surrounding manner.

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