CN214985214U - Energy-absorbing type cargo vehicle protective guard - Google Patents
Energy-absorbing type cargo vehicle protective guard Download PDFInfo
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- CN214985214U CN214985214U CN202120740211.4U CN202120740211U CN214985214U CN 214985214 U CN214985214 U CN 214985214U CN 202120740211 U CN202120740211 U CN 202120740211U CN 214985214 U CN214985214 U CN 214985214U
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Abstract
The utility model relates to a passive safe technical field of cargo vehicle discloses an energy-absorbing formula cargo vehicle rail guard. The protective guard comprises a plurality of supporting frames, a cross rod, a plurality of guide shafts and a plurality of elastic units, one end of each supporting frame is fixedly connected with a frame or an auxiliary frame of a cargo vehicle, the other end of each supporting frame is connected with the cross rod through one guide shaft, the guide shafts are fixed with the other ends of the supporting frames through fasteners, at least one elastic unit is arranged between the other end of each supporting frame and the cross rod, and the guide shafts penetrate through the elastic units. The protective guard can effectively absorb or counteract collision energy and reduce damage to vehicle accessories or external pedestrians and vehicles.
Description
Technical Field
The utility model relates to a passive safe technical field of cargo vehicle, concretely relates to energy-absorbing formula cargo vehicle rail guard.
Background
Cargo vehicle protective barriers are generally arranged on the side edges and the rear edges of a frame or an auxiliary frame of a cargo vehicle and are mainly used for protecting accessories arranged on the side edges of the vehicle, such as a water tank, an oil tank, an air storage tank and the like; in addition, when the vehicle collides with pedestrians or other cars, battery cars and the like, the secondary injury caused by the fact that the pedestrians or the vehicles are drawn into the bottom of the cargo vehicle can be effectively avoided.
In the prior art, a guard rail structure of a cargo vehicle generally comprises a cross rod and a support frame, wherein the cross rod and the support frame are rigidly connected together by welding or bolts, and the support frame is connected with a frame or a sub-frame to realize the integral installation and fixation of the guard rail. When the traditional guard rail structure is collided, the cross rod is easy to deform, the energy absorption effect is poor, the pouring amount of vehicle accessories is large, and damage is easily caused.
Therefore, it is desirable to provide a protective guard for a cargo vehicle, which can effectively absorb or counteract collision energy and reduce damage to vehicle accessories or external pedestrians and vehicles.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the traditional cargo vehicle rail guard that prior art exists when bumping, the horizontal pole is yielding, and the energy-absorbing effect is poor, and is great to the volume of plunging into of vehicle annex, easily causes the problem of destruction, provides an energy-absorbing formula cargo vehicle rail guard. The elastic units are arranged between the cross rod and the support frame for elastic connection, when a vehicle collides, the cross rod and the elastic units are matched to absorb collision energy together, so that the deformation of the integral structure of the protective guard is greatly reduced, and the effect of protecting vehicle accessories or external vehicles and pedestrians is achieved; in addition, the elastic unit is also provided with a guide shaft, so that the stability of the elastic element can be improved, and the elastic element and the cross bar can be prevented from generating larger lateral deformation when an external vehicle collides with the protective guard.
In order to realize the above-mentioned purpose, the utility model provides an energy-absorbing formula cargo vehicle rail guard, the rail guard includes a plurality of support frames, horizontal pole, a plurality of guiding axle and a plurality of elastic element, every the one end of support frame and cargo vehicle's frame or sub vehicle frame fixed connection, every the other end of support frame is through one the guiding axle with the horizontal pole is connected, and the guiding axle with the other end of support frame passes through the fastener and connects, every the other end of support frame with place at least one between the horizontal pole the elastic element, and the guiding axle runs through the elastic element.
Preferably, the number of the support frame, the guide shaft and the elastic unit is more than or equal to 2.
More preferably, the number of the support frame and the number of the guide shafts are 2-5.
More preferably, the number of the elastic units is 2 to 10.
Preferably, the number of the supporting frames, the number of the guide shafts and the number of the elastic units are the same.
Preferably, the support frame is L-shaped.
Preferably, the cross bar is U-shaped, C-shaped or W-shaped.
Preferably, the elastic unit is a spring member or a rubber shock-absorbing member.
Preferably, one end of the support frame is fixedly connected with a frame or a sub-frame of the cargo vehicle in a bolt connection mode.
Preferably, the guide shaft is connected with the other end of the support frame through a bolt.
In the energy-absorbing cargo vehicle protective guard of the utility model, the elastic unit is arranged between the other end of the support frame and the cross rod, the cross rod is mainly used for separating the outside vehicle or the pedestrian from the barrier and protecting the vehicle accessories, when the vehicle collides, the cross rod and the elastic unit are matched to absorb the collision energy together, and meanwhile, the support frame can be prevented from being impacted by the collision, thereby greatly reducing the deformation of the whole structure of the protective guard to achieve the effect of protecting the vehicle accessories or the outside vehicle and the pedestrian; in addition, the guide shaft is arranged in the elastic unit and is mainly used for enhancing the stability between the connection of the support frame and the cross bar, and the guide shaft penetrates through the elastic unit, so that the stability of the elastic element can be enhanced, and the elastic element and the cross bar can be prevented from generating large lateral deformation when an external vehicle collides with the protective guard. Through the rotation adjustment fastener, under the flexible effect of elastic element, make the other end of support frame with the horizontal pole can be dismantled and be connected.
Drawings
FIG. 1 is a schematic view of an energy absorbing cargo vehicle protective barrier according to the present invention;
fig. 2 and 3 are the simulation effect diagrams of the collision between the energy-absorbing type cargo vehicle protective guard and the traditional guardrail of the invention.
Description of the reference numerals
1, supporting a frame; 2, a cross bar; 3, guiding a shaft; 4 an elastic unit; one end of a support frame A; the other end of the support frame B.
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.
The endpoints of the ranges and any values disclosed herein are not limited to the precise range or value, and such ranges or values should be understood to encompass values close to those ranges or values. For ranges of values, between the endpoints of each of the ranges and the individual points, and between the individual points may be combined with each other to give one or more new ranges of values, and these ranges of values should be considered as specifically disclosed herein.
The utility model provides an energy-absorbing formula cargo vehicle rail guard, as shown in figure 1, the rail guard includes a plurality of support frames 1, horizontal pole 2, a plurality of guiding axle 3 and a plurality of elastic element 4, every the one end A of support frame 1 and cargo vehicle's frame or sub vehicle frame fixed connection, every the other end B of support frame 1 is through one guiding axle 3 with horizontal pole 2 is connected, and guiding axle 3 with the other end B of support frame 1 passes through the fastener and connects, every the other end B of support frame 1 with place at least one between the horizontal pole 2 elastic element 4, and guiding axle 3 runs through elastic element 4.
The utility model discloses an energy-absorbing formula cargo vehicle rail guard place between the other end B of support frame 1 and horizontal pole 2 elastic element 4, change horizontal pole and support frame in the traditional rail guard and adopt rigid connection's such as welding or bolt mode, horizontal pole 2 mainly used separates the outside vehicle of shelves or pedestrian and pours into and protect the vehicle annex, when the vehicle bumps, horizontal pole 2 cooperates with elastic element 4 and absorbs the collision energy jointly, also can avoid support frame 1 to receive the collision impact simultaneously, very big reduction rail guard overall structure's deflection, in order to reach the effect of protection vehicle annex or outside vehicle pedestrian; in addition, the guide shaft 3 is arranged in the elastic unit 4 and is mainly used for enhancing the stability between the connection of the support frame 1 and the cross bar 2, and the guide shaft penetrates through the elastic unit 4, so that the stability of the elastic element 4 can be enhanced, and the elastic element 4 and the cross bar 2 can be prevented from generating larger lateral deformation when an external vehicle collides with the protective guard. The other end B of the support frame 1 is connected with the cross rod 2 in a pre-tightening and disassembling mode under the action of the telescopic pre-tightening force of the elastic unit 4 by rotating the adjusting fastener.
Energy-absorbing formula cargo vehicle rail guard in, in order to strengthen the overall stability of rail guard to make its impact that can be better bear objects such as outside vehicle, the support frame 1 the guiding axle 3 with the number of elastic element 4 is more than or equal to 2.
In the embodiment, while the overall stability of the guard rail is enhanced, the number of the support frame 1, the guide shafts 3 and the elastic units 4 can be controlled within a proper range while avoiding the complexity, inconvenience and maintenance of the whole device.
In the preferred embodiment, the number of the support frame 1 and the number of the guide shafts 3 are 2 to 5.
In a preferred embodiment, the number of said elastic elements 4 is between 2 and 10.
In the energy-absorbing cargo vehicle rail guard of the present invention, each guide shaft 3 may be externally provided with 1 elastic unit 4 or a plurality of elastic units 4, which may be determined according to the specifications of the rail guard and each component. In order to prevent the elastic members 4 and the cross bar 2 from being largely laterally deformed when an external vehicle collides with the guard rail, not more than 2 elastic units 4 are correspondingly provided outside each guide shaft 3.
In a preferred embodiment, the number of the support frames 1, the guide shafts 3 and the elastic units 4 is the same. That is, 1 elastic unit 4 is correspondingly provided outside each guide shaft 3.
In the energy-absorbing cargo vehicle guard rail of the present invention, the shape of the support frame 1 and the cross bar 2 may be selected according to the conventional choice in the art.
In a specific embodiment, the support frame 1 may be L-shaped.
In a specific embodiment, the cross bar 2 may be a roll-formed or bent profile, such as a U-shaped, C-shaped or W-shaped profile.
The support frame 1 and the cross bar 2 need to have sufficient rigidity, and can bear the impact action of objects such as external vehicles and the like, so that the support frame is not easy to deform.
In the energy-absorbing cargo vehicle guard rail of the present invention, the elastic unit 4 may be a conventional choice in the art, as long as it can absorb or offset some of the energy generated by the external collision.
In a specific embodiment, the elastic unit 4 may be a spring member or a rubber shock absorbing member.
Energy-absorbing formula cargo vehicle rail guard in, the one end A of support frame 1 can be through bolted connection mode and cargo vehicle's frame or sub vehicle frame fixed connection, adopt this kind of connected mode, be convenient for installation and dismantlement. In addition, the support frame 1 can also be fixed to the frame or subframe of the cargo vehicle by welding.
In a specific embodiment, the guide shaft 3 and the other end B of the support frame 1 may be connected by a bolt. In this way, the fastening degree of the connection of the support frame 1 and the cross rod 2 can be adjusted according to the actual situation.
In one embodiment, as shown in fig. 1, the energy-absorbing cargo vehicle protection fence includes 2L-shaped support frames 1, U-shaped cross bars 2, 2 guide shafts 3, and 2 elastic units 4, where the elastic units 4 are spring members, one end a of each support frame 1 is fixedly connected to a frame or a subframe of a cargo vehicle through a bolt, the other end B of each support frame 1 is connected to the cross bar 2 through one of the guide shafts 3, the guide shafts 3 are connected to the other end B of the support frame 1 through bolts, one of the elastic units 4 is disposed between the other end B of each support frame 1 and the cross bar 2, and the guide shaft 3 penetrates through the elastic unit 4.
When the energy-absorbing type cargo vehicle protective guard is specifically installed, the following steps can be carried out:
(1) selecting a proper elastic element according to the specification size of the protective guard;
(2) the guide shaft passes through the elastic element, and the guide shaft and the elastic element are arranged between the support frame and the cross bar;
(3) adjusting a bolt on the guide shaft, fixing the guide shaft 3 with the other end B of the support frame 1, pre-tightening the cross rod under the action of an elastic element, and connecting the support frame and the cross rod;
(4) one end of the supporting frame is fixed on a truck frame or an auxiliary frame by adopting modes such as bolt connection and the like, so that vehicle protection is realized.
In the energy-absorbing cargo vehicle protective guard of the utility model, the elastic unit 4 is arranged between the other end B of the support frame 1 and the cross rod 2, the cross rod 2 is mainly used for separating the outside vehicle or the pedestrian from the barrier and protecting the vehicle accessories, when the vehicle collides, the cross rod 2 and the elastic unit 4 are matched to absorb the collision energy together, and simultaneously, the support frame 1 can be prevented from being impacted by the collision, thereby greatly reducing the deformation of the whole structure of the protective guard to achieve the effect of protecting the vehicle accessories or the outside vehicle pedestrians; in addition, the guide shaft 3 is arranged in the elastic unit 4 and is mainly used for enhancing the stability between the connection of the support frame 1 and the cross bar 2, and the guide shaft penetrates through the elastic unit 4, so that the stability of the elastic element 4 can be enhanced, and the elastic element 4 and the cross bar 2 can be prevented from generating larger lateral deformation when an external vehicle collides with the protective guard. The other end B of the support frame 1 is connected with the cross rod 2 in a pre-tightening and disassembling mode under the action of the telescopic pre-tightening force of the elastic unit 4 by rotating the adjusting fastener.
Example 1
This embodiment mainly used contrast tradition rail guard structure with energy-absorbing formula cargo vehicle rail guard collision effect. The crash simulation analysis of two guard rail structures is performed by using finite element software ABAQUS, and as shown in fig. 2 and fig. 3, the model adopts a C3D8R reduced integral unit and adopts P610L girder steel as a material. Adopt energy-absorbing formula cargo vehicle rail guard and traditional rail guard structure carry out the analysis-by-simulation contrastive analysis, mainly include following method step:
1) simplifying the model, namely simplifying the geometric model of the energy-absorbing type cargo vehicle protective guard shown in figure 1 into a finite element model shown in figure 2, wherein the support frame 1 is replaced by a rigid plane, the elastic element is replaced by a spring, and the rigidity of the spring is set to be 500N/mm;
2) completely constraining all degrees of freedom of a support frame 1 in a finite element model of the energy-absorbing type freight vehicle protective guard; for a traditional guard rail model, only fixed constraints are applied to two ends of the cross rod 2;
3) for two finite element models, the collision objects shown in fig. 2 and 3 are set by adopting the same mass and the same speed (same working condition), the mass of the collision object is 100kg, the collision speed is 3m/s, and the collision loading time is 0.01 s.
4) The strain (PEEQ equivalent plastic strain) comparison analysis is carried out on the two models by selecting the same time node, wherein the selected time node is 0.00256s, as shown in figures 2 and 3, and the deformation of the energy-absorbing type cargo vehicle protective guard is far smaller than that of the conventional structural protective guard at the time node.
Can know by two kinds of rail guards collision simulation results under the same operating mode, energy-absorbing formula cargo vehicle rail guard when the collision, can effectively less rail guard warp to protect the vehicle.
The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited thereto. In the technical idea scope of the present invention, it can be right to the technical solution of the present invention perform multiple simple modifications, including each technical feature combined in any other suitable manner, these simple modifications and combinations should be regarded as the disclosed content of the present invention, and all belong to the protection scope of the present invention.
Claims (10)
1. The energy-absorbing cargo vehicle protective guard is characterized by comprising a plurality of supporting frames (1), a cross rod (2), a plurality of guide shafts (3) and a plurality of elastic units (4), wherein one end (A) of each supporting frame (1) is fixedly connected with a frame or an auxiliary frame of a cargo vehicle, the other end (B) of each supporting frame (1) is connected with the cross rod (2) through one guide shaft (3), the guide shafts (3) are connected with the other end (B) of each supporting frame (1) through fasteners, at least one elastic unit (4) is arranged between the other end (B) of each supporting frame (1) and the cross rod (2), and the guide shafts (3) penetrate through the elastic units (4).
2. Energy-absorbing cargo vehicle protective guard according to claim 1, characterized in that the number of the support frame (1), the guide shaft (3) and the resilient unit (4) is more than or equal to 2.
3. Energy-absorbing cargo vehicle protective fence according to claim 2, characterized in that the number of the support frame (1) and the number of the guide shafts (3) are 2-5.
4. Energy-absorbing cargo vehicle protective fence according to claim 2, characterized in that the number of said elastic units (4) is 2-10.
5. Energy-absorbing cargo vehicle guard rail according to claim 2, characterized in that the number of support frames (1), guide shafts (3) and resilient units (4) is the same.
6. Energy-absorbing cargo vehicle guard rail according to claim 1 or 2, characterized in that the support frame (1) is L-shaped.
7. Energy-absorbing cargo vehicle rail guard according to claim 1, characterized in that the crossbar (2) is U-shaped, C-shaped or W-shaped.
8. Energy-absorbing cargo vehicle guard rail according to claim 1 or 2, characterized in that the resilient unit (4) is a spring element or a rubber shock absorbing element.
9. Energy-absorbing cargo vehicle guard rail according to claim 1, characterized in that one end (a) of the support frame (1) is fixedly connected to a frame or subframe of a cargo vehicle by means of a bolt connection.
10. Energy-absorbing cargo vehicle guard rail according to claim 1, characterized in that the guide shaft (3) is bolted to the other end (B) of the support frame (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120740211.4U CN214985214U (en) | 2021-04-12 | 2021-04-12 | Energy-absorbing type cargo vehicle protective guard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120740211.4U CN214985214U (en) | 2021-04-12 | 2021-04-12 | Energy-absorbing type cargo vehicle protective guard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214985214U true CN214985214U (en) | 2021-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120740211.4U Active CN214985214U (en) | 2021-04-12 | 2021-04-12 | Energy-absorbing type cargo vehicle protective guard |
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| CN (1) | CN214985214U (en) |
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- 2021-04-12 CN CN202120740211.4U patent/CN214985214U/en active Active
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