CN211364467U - Anti-twisting multistage buffering anti-collision device for road maintenance equipment - Google Patents

Abstract

The utility model relates to a technical field of road maintenance construction equipment especially relates to a prevent turning round multistage buffering buffer stop for on the road maintenance equipment. Including connecting frame, still including connecting frame's rear end be connected with by the third buffer layer that energy-absorbing material made, be located third buffer layer rear and with first buffer layer that third buffer layer interval set up and connect second buffer layer on connecting frame and the first buffer layer, connecting frame's front side still is equipped with the connecting portion of dismantling the connection with road maintenance equipment, connecting portion swing joint is in just can be relative on the connecting frame back-and-forth movement, just still be equipped with on the connecting frame and be located the torsion bar is prevented of connecting portion both sides. The torsion-proof bars arranged on the two sides are propped against the rear end of the front vehicle through the torsion-proof bars on the two sides when the rear side collides, so that the left and right swinging of the anti-collision device is prevented, and the secondary accident is prevented.

Description

Anti-twisting multistage buffering anti-collision device for road maintenance equipment

[ technical field ] A method for producing a semiconductor device

The utility model relates to a technical field of road maintenance construction equipment especially relates to a prevent turning round multistage buffering buffer stop for on the road maintenance equipment.

[ background of the invention ]

During road construction, in order to ensure construction safety, a plurality of plastic traffic cones are usually placed in a road construction area to remind that construction is carried out in front of a driving vehicle, and the driving vehicle needs to detour in advance to avoid accidents.

Therefore, some road construction car rear can install anticollision buffer additional to when the accident of back car collision appears in the realization, buffer the striking through anticollision buffer, avoid striking to damage with protection road construction equipment.

However, the conventional anti-collision buffer device is generally connected to the rear of road maintenance construction equipment and is fixed on a road after being put down through an articulated frame, so that the anti-collision buffer device plays a role in anti-collision protection, when the anti-collision buffer device is walking, the articulated frame needs to be folded to walk along with a front vehicle, if the anti-collision buffer device is not fixed by the articulated frame, the anti-collision buffer device is easy to swing when rear side collision occurs, so that the rear vehicle can collide to two sides along the road, and even if the safety of the front vehicle is protected, more serious accidents or secondary accidents can occur on the rear vehicle. Leading to failure of the protective effect of the crash cushion.

[ summary of the invention ]

Need the fixed side of articulated frame to avoid wobbling problem for solving among the prior art anticollision buffer, the utility model provides a prevent turning round multistage buffering buffer for on the road maintenance equipment.

The utility model discloses a realize through following technical scheme:

a prevent turning round multistage buffering buffer stop for on road maintenance equipment, including connecting frame, still including connecting frame's rear end be connected with by the energy-absorbing material third buffer layer, be located third buffer layer rear and with the first buffer layer that third buffer layer interval set up and connect the second buffer layer on connecting frame and the first buffer layer, connecting frame's front side still is equipped with the connecting portion of dismantling the connection with road maintenance equipment, connecting portion swing joint just can be relative on the connecting frame back-and-forth movement, just still be equipped with on the connecting frame and be located the torsion bar is prevented of connecting portion both sides.

The anti-torsion multistage buffering anti-collision device for the road maintenance equipment is characterized in that the connecting portion is movably connected to the connecting frame through the movable rod, the rear end of the movable rod is provided with the limiting portion, and the connecting frame is provided with the damping layer on the side opposite to the limiting portion.

According to the anti-torsion multistage buffering anti-collision device for the road maintenance equipment, the anti-torsion bar is fixedly connected to the connecting frame, and the front end of the anti-torsion bar is provided with the damping layer.

According to the anti-torsion multistage buffering and anti-collision device for the road maintenance equipment, the first buffer layer is provided with the buffering and orienting concave position which is easily attached to the collision surface of the rear vehicle after the rear vehicle collides, and the two sides of the buffering and orienting concave position are also provided with the fins extending towards the two sides.

According to the anti-torsion multistage buffering and anti-collision device for the road maintenance equipment, the connection part of the wing pieces on the two sides and the buffering directional concave position is an oblique guide transition section which inclines towards the concave direction of the buffering directional concave position, so that the buffering directional concave position and the oblique guide transition sections on the two sides form a trapezoidal section.

The anti-torsion multistage buffering anti-collision device for the road maintenance equipment comprises a first buffering layer and a second buffering layer, wherein the first buffering layer comprises an anti-collision plate, the buffering directional concave position is a concave position formed by sinking from the middle part of the rear end surface of the anti-collision plate to the front end, and buffering corrugations are convexly arranged on the surface of the rear end of the anti-collision plate.

According to the anti-torsion multistage buffering and anti-collision device for the road maintenance equipment, the buffering corrugations are arranged on the rear end face of the first buffering layer at intervals from top to bottom.

The anti-torsion multistage buffering anti-collision device for the road maintenance equipment comprises a first buffering layer, a second buffering layer and an anti-collision plate, wherein the first buffering layer is arranged on the first buffering layer, the anti-collision plate is arranged on the second buffering layer, and the second buffering layer is connected to the mounting frame.

The anti-torsion multistage buffering and anti-collision device for the road maintenance equipment comprises a first buffer layer, a second buffer layer, a third buffer layer and a connecting frame, wherein the first buffer layer and the second buffer layer are arranged between the connecting frame and the first buffer layer at intervals, and the third buffer layer is arranged between the first buffer layer and the second buffer layer.

According to the anti-torsion multistage buffering and anti-collision device for the road maintenance equipment, the cross section of the third buffering layer is honeycomb-shaped.

Compared with the prior art, the utility model discloses there is following advantage:

1. the utility model provides a prevent turning round multistage buffering buffer stop for on road maintenance equipment, it plays the effect of anticollision buffering through tertiary buffer layer, when the rear truck striking, the earlier collision is on first buffer layer, and first buffer layer and third buffer layer clearance set up, the event is earlier through destroying first buffer layer and connecting the second buffer layer at first buffer layer, hits to the third buffer layer again to play the effect of tertiary buffering, protect the road maintenance construction equipment of buffer stop front side. And this application is linked the frame and is passed through connecting portion and connect on road maintenance construction equipment, through the torsion bar of preventing that both sides set up, when bumping in the rear side, through the rear end of preventing that the torsion bar top of both sides is at the front truck to play and prevent that buffer stop from taking place the horizontal hunting, the secondary accident of preventing is released, plays better crashproof buffering effect. But also replaces the fixation of the hinged frame, thus being capable of moving along with the front vehicle at any time.

2. The utility model is used for still be equipped with the directional concave position of buffering on the first buffer layer among the multistage buffering buffer stop of preventing turning round on the road maintenance equipment, even when the non-forward striking of rear truck, as long as hit in the concave position, just make first buffer layer have along the trend that concave position extending direction warp, and concave position both sides then corresponding backward car direction warp, thereby make first buffer layer attach on the collision surface of rear truck easily, there is certain adhesive force to the rear truck, play certain directional action, thereby play and prevent that the rear truck from colliding the emergence that causes the secondary accident to both sides behind buffer again in the collision, make this application buffer more target in place to the protection of rear truck. The structure is simple, and the application range is wide.

3. The utility model is used for prevent turning round multistage buffering buffer stop on the road maintenance equipment is equipped with the connecting portion that can be connected with road construction operation equipment at the connection frame front end, and this buffer stop can dismantle through this connecting portion and connect on road construction operation equipment. And the road construction operation vehicle is also provided with traveling wheels, so that the road construction operation vehicle can be protected by pulling the anti-collision device to travel through the traveling wheels without being placed down through the hinged frame when the road construction operation equipment travels. Meanwhile, the anti-collision device is pulled behind the vehicle through the detachable connecting portion, so that the anti-collision device can be separated from road construction operation equipment, and can be replaced on different equipment, and the application of the anti-collision device is more flexible.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a torsion-proof multi-stage buffer anti-collision device used on road maintenance equipment;

fig. 2 is a schematic structural view of a torsion-proof multi-stage buffer anti-collision device used on road maintenance equipment of the present invention;

FIG. 3 is a schematic structural diagram of hiding a third buffer layer;

FIG. 4 is a schematic structural view of the crash panel;

FIG. 5 is a first schematic structural diagram of a second buffer layer according to a second embodiment;

FIG. 6 is a second schematic structural diagram of a second buffer layer according to a second embodiment;

FIG. 7 is a schematic structural diagram of a third embodiment of a second buffer layer;

FIG. 8 is a schematic view showing a state in which the movable bar is stretched (the stopper portion is in contact with the connecting frame);

fig. 9 is a schematic view showing a contracted state of the movable lever (the stopper portion is not in contact with the connection frame).

[ detailed description ] embodiments

In order to make the technical problem, technical solution and advantageous effects solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to further explain the present invention in detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The utility model discloses a realize through following technical scheme:

as shown in fig. 1, 8 and 9, the anti-twisting multistage buffering and anti-collision device for the road maintenance equipment comprises a connecting frame 1, a third buffer layer 13 made of an energy-absorbing material is connected to the rear end of the connecting frame 1, a first buffer layer 11 located behind the third buffer layer 13 and spaced from the third buffer layer 13, and a second buffer layer 12 connected to the connecting frame 1 and the first buffer layer 11, a connecting portion 101 detachably connected to the road maintenance equipment is further arranged on the front side of the connecting frame 1, the connecting portion 101 is movably connected to the connecting frame 1 and can move back and forth relative to the connecting frame 1, and anti-twisting rods 1012 located on two sides of the connecting portion 101 are further arranged on the connecting frame 1. The utility model provides a prevent turning round multistage buffering buffer stop for on road maintenance equipment, it plays the effect of anticollision buffering through tertiary buffer layer, when the rear truck striking, the earlier collision is on first buffer layer, and first buffer layer and third buffer layer clearance set up, the event is earlier through destroying first buffer layer and connecting the second buffer layer at first buffer layer, hits to the third buffer layer again to play the effect of tertiary buffering, protect the road maintenance construction equipment of buffer stop front side. And this application is linked the frame and is passed through connecting portion and connect on road maintenance construction equipment, through the torsion bar of preventing that both sides set up, when bumping in the rear side, through the rear end of preventing that the torsion bar top of both sides is at the front truck to play and prevent that buffer stop from taking place the horizontal hunting, the secondary accident of preventing is released, plays better crashproof buffering effect. But also replaces the fixation of the hinged frame, thus being capable of moving along with the front vehicle at any time.

Specifically, connecting portion 101 through activity pole 1011 swing joint be in connecting frame 1, the rear end of activity pole 1011 is equipped with spacing portion 1011a, connecting frame 1 with be equipped with buffer layer 101a on the relative one side of spacing portion 1011 a. The connecting part 101 is detachably connected to the rear end of the front vehicle, and the connecting frame 1 is further provided with a traveling wheel 102. The front end of the connecting frame is provided with a connecting part which can be connected with road construction operation equipment, and the anti-collision device can be detachably connected with the road construction operation equipment through the connecting part. And the road construction operation vehicle is also provided with traveling wheels, so that the road construction operation vehicle can be protected by pulling the anti-collision device to travel through the traveling wheels without being placed down through the hinged frame when the road construction operation equipment travels. Meanwhile, the anti-collision device is pulled behind the vehicle through the detachable connecting portion, so that the anti-collision device can be separated from road construction operation equipment, and can be replaced on different equipment, and the application of the anti-collision device is more flexible.

When the front vehicle walks, the movable rod 1011 is driven to move forward, and when the limiting part at the rear end of the movable rod is contacted with the connecting frame. Can drive whole connection frame and remove, connection frame still is equipped with the buffer layer with spacing portion contact department moreover, is favorable to making the movable rod more durable.

Further, the torsion bar 1012 is fixedly connected to the connecting frame 1, and the front ends of the torsion bar 1012 are provided with shock absorbing layers 101 a. The damping layer can be made of damping cotton, silica gel and other materials with buffering function.

When a rear vehicle collides, the rear vehicle drives the anti-collision device to move forwards, the front vehicle is static at the moment, namely the connecting frame moves forwards relative to the movable rod until the anti-torsion rods fixedly connected to the two sides of the movable rod are contacted with the rear end face of the front vehicle, and the connecting frame stops moving. And the anti-torsion rods on the two sides are propped against the rear end face of the front vehicle, so that the anti-collision device is effectively prevented from swinging towards the two sides. And through setting up the buffer layer, can cushion the striking when just contacting the front truck, prevent that the striking is too violent and lead to directly being destroyed and cause the anti-torque rod inefficacy.

Still further, the first cushion layer 11 is provided with a cushion orientation concave 111 which makes the first cushion layer 11 easily attached to the rear vehicle collision surface after being collided by the rear vehicle. In the application, the first buffer layer is also provided with buffer orientation concave positions, even if the rear vehicle is not collided in a forward direction (because the rear vehicle is generally steered and braked when being collided, the vehicle head faces to the two sides of the buffer device in a forward direction, only the joint of the vehicle head and the side edges is a collision surface when being collided, and most of the prior vehicle types are made into an arc shape for aesthetic appearance, so that the vehicle is easy to steer to one side when being collided to an anti-collision plate with a flat plate structure, the first buffer layer has the tendency of deforming along the extension direction of the concave positions as long as being collided into the concave positions, and the two sides of the concave positions are correspondingly deformed towards the rear vehicle direction (namely, the concave positions are sunken forwards when being collided, and the two sides of the concave positions are correspondingly deformed backwards), so that the first buffer layer is easy to attach to the collision surface of the rear vehicle, has certain adhesive force to the rear vehicle, plays a certain orientation role, and prevents the rear vehicle from colliding to the two sides to cause secondary accidents after, make this application buffer more target in place to the protection of back car.

Specifically, the buffer orientation concave 111 is further provided with a wing piece 112 extending to two sides on two sides. When the cushion orientation concave is concavely deformed forward, the fins 112 on both sides are naturally directed rearward, thereby adhering to the collision surface of the rear vehicle. Simple structure plays the protection effect to the back car, makes this application buffer stop more have the security.

Furthermore, the connection between the wing panel 112 and the buffer orientation concave position 111 on both sides is an oblique guide transition section 113 inclined towards the concave direction of the buffer orientation concave position 111, so that the buffer orientation concave position 111 and the oblique guide transition sections 113 on both sides form a trapezoidal section. This oblique direction changeover portion 113 makes the back car more easily cooperate with directional concave position 111 of buffering when bumping into, makes buffer stop play a role, plays the protection effect.

In addition, the first buffer layer 11 includes an anti-collision plate, the buffer orientation concave 111 is a concave formed by sinking from the middle of the rear end face of the anti-collision plate to the front end, and a buffer corrugation 114 is further convexly provided on the rear end surface of the anti-collision plate. The buffer corrugations are additionally arranged, so that the surface of the anti-collision plate is not flat, and after the anti-collision plate is collided by a rear vehicle, the buffer corrugations are contacted with the collision surface, so that the resistance between the contact surface and the anti-collision plate is increased, the relative movement of the contact surface and the anti-collision plate is effectively prevented, and the anti-collision plate is beneficial to protecting the rear vehicle from moving left and right. Moreover, for the existing automobile, the automobile head is provided with spaced stripes, and the buffer corrugations convexly arranged on the automobile can be clamped into the automobile head (in gaps of the stripes) during collision, so that the resistance of the automobile with a rear automobile is further increased, and the rear automobile is protected.

Specifically, the rear end face of the first buffer layer 11 is provided with a plurality of buffer corrugations 114 arranged at intervals from top to bottom. And the section of the anti-collision plate is in a wave shape. The unevenness of the rear end face of the anti-collision plate is further increased, so that the resistance of the anti-collision plate to a rear vehicle contact surface is increased when collision occurs, and a better protection effect is achieved through a simple structure.

Moreover, the buffer corrugation 114 includes a convex sidewall 114a connected to the bumper plate at both sides and extending rearward, and a top 114b connected to the convex sidewall 114a at both sides, and the junction of the top 114b and the convex sidewall 114a is a circular arc transition section. The structure is simple, and the resistance increasing effect and the protection effect are good.

More specifically, the junction between the convex sidewall 114a and the bumper plate is also provided with an arc transition section. The width of the gap between two adjacent buffer corrugations 114 is the same as the width of the top 114 b. Therefore, the anti-collision plate is more attractive, convenient to manufacture and low in cost.

Furthermore, the cushion bellows 114 are stamped and formed in the fender panel in this embodiment. The manufacturing is simple, and the anti-collision plate is lighter.

Still further, the first buffer layer 11 further includes a mounting frame 11a, the crash panel is disposed on the mounting frame 11a, and the second buffer layer 12 is connected to the mounting frame 11 a. Through setting up the installing frame, the anticollision board sets up with in the installing frame, and the installing frame is used for being connected with linking frame.

The concrete structure of installing frame does in this scheme: the mounting frame 11a comprises a frame with a hollow middle part, and flanges which extend backwards and enclose the anticollision plate cavity are arranged around the frame. The middle part is hollowed out to conveniently let the directional buffering concave position on the anti-collision plate, and the flanges on the periphery are favorable for protecting the anti-collision plate installed in the middle part, so that the anti-collision plate cannot be deformed and lose the buffering effect due to collision in the transportation process.

Moreover, the upper and lower sides of the crash panel are provided with connecting portions for connecting the crash panel to the mounting frame 11 a. Make things convenient for the erection joint of crashproof board through connecting portion, the accessible is trompil on connecting portion and is passed through bolted connection on the installing frame, also accessible welding, riveting etc. The connecting part can be bent towards the bending direction of the flange of the mounting frame and then clamped on the mounting frame through the pressing piece.

Still further, in this scheme, the third buffer layer 13 is an anti-collision bag, and its whole is rectangular structure, and its cross section is honeycomb. By arranging the cross section of the buffer layer 13 in a honeycomb shape, a better buffering effect can be provided. In practical applications, the cross section of the buffer layer 13 may be triangular, square, circular or polygonal; other soft buffer materials may be filled in the third buffer layer 13.

Specifically, the end face of the anti-collision bag opposite to the first buffer layer 11 is provided with a buffer port 131 formed by sinking towards the interior of the anti-collision bag. Compare with the crashproof package of current no buffering mouth structure, after the collision of taking place the back car, even the back car only car head part striking on this buffer stop, when it strikes to crashproof package, through still buffering the mouth, can make the locomotive fully imbed to crashproof package on, utilize to inside sunken buffering mouth, when striking to this buffering mouth, both sides advantage backward deformation to with the contact of striking face, the increase resistance plays better cushioning effect.

Specifically, two side walls of the buffer opening 131 are connected with the rear end surface of the anti-collision bag through a guide inclined surface. This direction inclined plane is favorable to making the car embedding to the buffering mouth in that the back can be easier for buffering mouth performance effect.

The buffer openings 131 penetrate through the upper and lower end surfaces of the crash-proof bag, and have trapezoidal cross sections. Simple structure increases the shock-absorbing capacity of anticollision package. The overall anti-collision bag is rectangular, and the depth of the buffer opening 131 is 1/5-1/4 of the length of the anti-collision bag. In the scheme, the depth of the buffer opening is preferably 1/5 the length of the anti-collision bag, if the buffer opening is too deep (the depth is more than 1/4), the thickness of the middle part of the anti-collision bag is reduced, and the resistance of the whole buffer is reduced; if it is made too shallow (depth less than 1/6), the above-described effect of the buffer port is hardly exerted, resulting in a decrease in the buffering effect.

And, combine the directional concave position 111 of buffering on the anticollision board, relative with the buffering mouth on the anticollision package, when the rear truck collided to the directional concave position of buffering, its trend of warping can be smoothly with the rear truck towards the direction of buffering mouth to make the buffering mouth exert its effect better.

Still further, the second buffer layer 12 includes a first crash column group and a second crash column group which are arranged between the connection frame 1 and the first buffer layer 11 at an interval from top to bottom, and the third buffer layer 13 is located between the first crash column group and the second crash column group. The first anti-collision column group and the second anti-collision column group serve as a buffer effect, and the second anti-collision column group serves as a connecting support. When the collision happens, the gap between the first buffer layer and the third buffer layer can reach the third buffer layer after the second buffer layer (namely the anti-collision column) is damaged, so that the buffer effect is achieved.

In the scheme, the first buffer layer, the second buffer layer and the third buffer layer are all made of aluminum alloy materials, and the buffer layers have energy absorption performance, light weight and high strength. The use of the device is satisfied.

Embodiment one of the second buffer layer: and the first anti-collision column group and the second anti-collision column group are X-shaped connecting supports. As described above, the first crash column group serves as a buffer function, and the second crash column group serves as a connecting bracket. In the buffering process, the second buffer layer is required to collide with the third buffer layer after being damaged, so that the shape and the connection mode of the bracket can cause the deformation of the damaged bracket, if the design is not proper, the bracket can be broken in the damage process or even can be knocked to fly, and other accidents can be caused, such as secondary damage caused by splashing to a rear vehicle or beside the rear vehicle. This embodiment is through setting up to X type support, is destroying its to the middle part and is out of shape, can prevent to warp the back support and splash and cause the secondary accident, improves this buffer stop's security performance.

In the scheme, the first anti-collision column group and the second anti-collision column group have the same structure and only have the difference of connecting positions, so that the structure of the first anti-collision column group is only described in detail below.

Specifically, be close to last left on the trailing flank of connecting frame 1 and be equipped with first connecting block 41, be close to right-hand second connecting block 42 that still is equipped with in last, first buffer layer 11 is relative be equipped with on the terminal surface of connecting frame 1 with the third connecting block 43 that first connecting block 41 is relative, and with the fourth connecting block 44 that second connecting block 42 is relative sets up, first crashproof post group includes that one end is connected first crashproof post 121, the second crashproof post 122 that one end is connected on third connecting block 43 is connected to the second connecting block 42 other end of first connecting block 41 other end connection on fourth connecting block 44. Through increasing the connecting block, can make things convenient for first crashproof post group of fixed mounting and second crashproof post group for the structure is simpler.

In addition, the middle portions of the first and second crash columns 121 and 122 are connected by a connecting member 5. Connect the middle part of first bumping post 121 and second bumping post 122, make two bumping posts be equivalent to a whole, together warp when being destroyed, can increase the resistance, play better buffering effect.

Moreover, two longer bumper bars which are arranged in a crossed manner can be directly adopted to form an X-shaped bracket, but in the scheme, the first bumper post 121 comprises a first upper bumper post 121a, one end of which is connected to the first connecting block 41, the other end of which is connected to the connecting piece 5, and a first lower bumper post 121b, one end of which is connected to the other side of the connecting piece 5 opposite to the first upper bumper post 121a, and the other end of which is connected to the fourth connecting block 44; the second crash column 122 includes a second upper crash column 122a having one end connected to the second connecting block 42 and the other end connected to the connecting member 5, a second lower crash column 122b having one end connected to the other side of the connecting member 5 opposite to the second upper crash column 122a and the other end connected to the third connecting block 43; the first upper impact column 121a, the first lower impact column 121b, the second upper impact column 122a and the second lower impact column 122b are in the same plane. The length of single anticollision pole has been reduced in other words to further prevent it by the breakage of destruction in-process, the middle part all is connected on the connecting piece moreover, further receives the restriction of connecting piece like this at the deformation in-process, and it can not break at the deformation in-process that can be better is splashed.

To further increase its cushioning capacity, the axes of the first upper and lower posts 121a, 121b are collinear, and the axes of the second upper and lower posts 122a, 122b are collinear.

Example two of the second buffer layer: as shown in fig. 5 and 6, the difference from the above is that the first and second crash column groups are both an "X" type connecting bracket and arc-shaped auxiliary brackets connected to both sides of the "X" type connecting bracket, and each arc-shaped auxiliary bracket includes a left arc-shaped crash bar 123 connected to the left side of the "X" type connecting bracket and a right arc-shaped crash bar 124 connected to the right side of the "X" type connecting bracket. It is not only through setting up to X type support, is destroying it and is warping to the middle part, can prevent to warp the back support and splash and cause the secondary accident, improves this buffer stop's security performance. And arc bumper bars are additionally arranged on two sides of the X-shaped support, so that the buffering effect of the second buffer layer is further improved. Moreover, the connection is more stable, not easy to damage and beautiful.

In this embodiment, as shown in fig. 6, the left and right arc-shaped auxiliary brackets may be an outer arc-shaped connecting rod of which the middle part is bent toward the left side, and the right arc-shaped impact-resistant rod 124 is an outer arc-shaped connecting rod of which the middle part is bent toward the right side. As shown in fig. 5, the left and right arc-shaped auxiliary brackets may also be inner arc-shaped connecting rods, where the left arc-shaped crash bar 123 and the right arc-shaped crash bar 124 are both curved toward the X-shaped connecting bracket. Simple structure is favorable to keeping the connection stability of support, is favorable to increasing the buffering effect of second buffer layer moreover. The radian is also set to control the deformation direction to be oriented (preferentially to be deformed in the arc direction) in the deformation process so as to prevent the accidents of breaking and the like caused by random deformation. And the X-shaped bracket can refer to the structure in the first embodiment.

Example three of the second buffer layer: as shown in fig. 7, the difference from the above embodiment is that the second buffer layer 12 includes a first bumper group 51 connected to the rear side of the connecting frame 1 and close to the upper left, a second bumper group 52 connected to the rear side of the connecting frame 1 and close to the upper right, a third bumper group 53 located on the rear side of the connecting frame 1 and close to the lower side and arranged opposite to the first bumper group 51, and a fourth bumper group located on the rear side of the connecting frame 1 and close to the lower side and arranged opposite to the second bumper group 52, and the first bumper group 51, the second bumper group 52, the third bumper group 53, and the fourth bumper group are all "8" shaped brackets. The bumper structure has the advantages that when a rear vehicle collides to one side of the rear first buffer layer (for example, only the left side of the rear end), the first bumper group and the third bumper group on the left side have the buffer effect, and compared with the bumper groups in the two previous embodiments, the bumper structure can exert good buffer effect. And the shape is 8-shaped, so that the deformation direction can be controlled to be oriented (preferentially to be deformed in the arc direction) in the damaged and deformed process, and accidents such as breakage and the like caused by random deformation can be prevented.

Specifically, a first connecting block 41 is arranged on the rear side surface of the connecting frame 1 near the upper left, a second connecting block 42 is arranged near the upper right, and a third connecting block 43 opposite to the first connecting block 41 and a fourth connecting block 44 opposite to the second connecting block 42 are arranged on the end surface of the first buffer layer 11 opposite to the connecting frame 1;

the first bumper bar group 51 is connected to the first and third connecting blocks 41 and 43, and the second bumper bar group 52 is connected to the second and fourth connecting blocks 42 and 44. Through increasing the connecting block, can make things convenient for first crashproof pole group of fixed mounting, second crashproof pole group, third crashproof pole group and fourth crashproof pole group for the structure is simpler.

Furthermore, the first bumper bar set 51 includes two S-shaped curved bars connected to the first connecting block 41 and the third connecting block 43, the two S-shaped curved bars are oppositely arranged to form an 8 shape, and the middle portions of the two S-shaped curved bars are connected by a connecting member 5. The structure is simple, and the manufacture and the installation are convenient. Make two curved bars be equivalent to a whole through the connecting piece, be destroyed the time together warp, can increase the resistance, play better buffering effect.

In addition, the structure that the first anti-collision rod group 51 comprises four arc-shaped rods with the middle parts thereof bending outwards, two arc-shaped rods are oppositely arranged to form two 0-shaped rod groups, and one ends of the two 0-shaped rod groups are connected through a connecting piece 5 can be adopted. The four arc-shaped rods are in the same plane. It has reduced the length of single crashproof pole in other words, and every crashproof pole group all has four unit arc poles to constitute, so when the collision takes place to warp, can make every crashproof pole be difficult for the rupture. The four arc-shaped rods are equivalent to a whole through the connecting pieces, and are deformed together when being damaged, so that the resistance can be increased, and a better buffering effect is achieved. And the middle part is connected on the connecting piece, further receives the restriction of connecting piece like this in the deformation process, and it can be better protected can not break and splash in the deformation process.

The buffering principle of this application buffer stop does:

when the rear vehicle collides, the rear vehicle firstly collides on the crash-proof plate (the first buffer layer) at the rear side, and because a gap is arranged between the crash-proof plate and the energy-absorbing bag (the third buffer layer), the crash-proof column (the second buffer layer) needs to be deformed and damaged in the process that the crash-proof plate is contacted with the energy-absorbing bag when the rear vehicle collides.

The utility model provides a prevent turning round multistage buffering buffer stop for on road maintenance equipment, it plays the effect of anticollision buffering through tertiary buffer layer, when the rear truck striking, the earlier collision is on first buffer layer, and first buffer layer and third buffer layer clearance set up, the event is earlier through destroying first buffer layer and connecting the second buffer layer at first buffer layer, hits to the third buffer layer again to play the effect of tertiary buffering, protect the road maintenance construction equipment of buffer stop front side. And in this application still be equipped with the directional concave position of buffering on the first buffer layer, even when the rear truck is not the forward striking, as long as hit in the concave position, just make first buffer layer have along the trend that concave position extending direction warp, and concave position both sides then corresponding backward car direction warp, thereby make first buffer layer attach on the collision surface of rear truck easily, there is certain adhesive force to the rear truck, play certain directional effect, thereby play and prevent that the rear truck from colliding the emergence that causes the secondary accident to both sides behind buffer again, make this application buffer more target in place to the protection of rear truck.

The foregoing is illustrative of one or more embodiments provided in connection with the detailed description and is not to be construed as limiting the invention to the precise embodiments disclosed herein. All with the utility model discloses a method, structure etc. are similar, the same, or to the utility model discloses make a plurality of technological deductions under the design prerequisite, or the replacement should all regard as the utility model discloses a protection scope.

Claims (10)

1. A torsion-proof multi-level buffer anti-collision device used on road maintenance equipment comprises a connecting frame (1), characterized in that the rear end of the connecting frame (1) is connected with a third buffer layer (13) made of energy-absorbing material, a first buffer layer (11) which is positioned behind the third buffer layer (13) and is arranged at an interval with the third buffer layer (13), and a second buffer layer (12) which is connected on the connecting frame (1) and the first buffer layer (11), the front side of the connecting frame (1) is also provided with a connecting part (101) detachably connected with the road maintenance equipment, the connecting part (101) is movably connected on the connecting frame (1) and can move back and forth relative to the connecting frame (1), and the connecting frame (1) is also provided with torsion preventing bars (1012) positioned at two sides of the connecting part (101).

2. The anti-torsion multistage buffering and anti-collision device for the road maintenance equipment is characterized in that the connecting portion (101) is movably connected to the connecting frame (1) through a movable rod (1011), a limiting portion (1011a) is arranged at the rear end of the movable rod (1011), and a damping layer (101a) is arranged on one side, opposite to the limiting portion (1011a), of the connecting frame (1).

3. The multistage buffering and impact-preventing device for road maintenance equipment according to claim 2, wherein the torsion-preventing bar (1012) is fixedly connected to the connecting frame (1), and the front ends of the torsion-preventing bar (1012) are provided with shock-absorbing layers (101 a).

4. The anti-twist multi-level buffer anti-collision device for the road maintenance equipment according to claim 1, wherein the first buffer layer (11) is provided with a buffer orientation concave (111) which enables the first buffer layer (11) to be easily attached to the collision surface of the rear vehicle after being collided by the rear vehicle, and fins (112) extending towards two sides are further provided on two sides of the buffer orientation concave (111).

5. The anti-torsion multi-stage buffer anti-collision device for the road maintenance equipment is characterized in that the connection part of the wing panel (112) on the two sides and the buffer orientation concave position (111) is an oblique guide transition section (113) which inclines towards the concave direction of the buffer orientation concave position (111), so that the buffer orientation concave position (111) and the oblique guide transition sections (113) on the two sides form a trapezoidal section.

6. The anti-torsion multistage buffering and anti-collision device for the road maintenance equipment is characterized in that the first buffering layer (11) comprises an anti-collision plate, the buffering orientation concave position (111) is a concave position formed by being concaved from the middle part of the rear end surface of the anti-collision plate to the front end, and the rear end surface of the anti-collision plate is further convexly provided with buffering corrugations (114).

7. The anti-torsion multistage buffering and anti-collision device for the road maintenance equipment as claimed in claim 6, wherein the back end face of the first buffering layer (11) is provided with a plurality of buffering corrugations (114) which are arranged at intervals from top to bottom.

8. The torsion-proof multi-level buffer anti-collision device for the road maintenance equipment according to claim 7, wherein the first buffer layer (11) further comprises a mounting frame (11a), the anti-collision plate is arranged on the mounting frame (11a), and the second buffer layer (12) is connected to the mounting frame (11 a).

9. The anti-torsion multistage buffering and anti-collision device for the road maintenance equipment is characterized in that the second buffering layer (12) comprises a first anti-collision column group and a second anti-collision column group which are arranged between the connecting frame (1) and the first buffering layer (11) at intervals from top to bottom, and the third buffering layer (13) is arranged between the first anti-collision column group and the second anti-collision column group.

10. The torsion-proof multi-level buffer collision avoidance device for road maintenance equipment according to claim 1, wherein the cross section of the third buffer layer (13) is honeycomb-shaped.

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