CN111469790B - High freight train of security prevents structure of knocking into back - Google Patents
High freight train of security prevents structure of knocking into back Download PDFInfo
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- CN111469790B CN111469790B CN202010425564.5A CN202010425564A CN111469790B CN 111469790 B CN111469790 B CN 111469790B CN 202010425564 A CN202010425564 A CN 202010425564A CN 111469790 B CN111469790 B CN 111469790B
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- placing frame
- truck
- connecting piece
- guide
- stop lever
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/56—Fittings damping bouncing force in truck collisions, e.g. bumpers; Arrangements on high-riding vehicles, e.g. lorries, for preventing vehicles or objects from running thereunder
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D43/00—Spare wheel stowing, holding, or mounting arrangements
- B62D43/02—Spare wheel stowing, holding, or mounting arrangements external to the vehicle body
- B62D43/04—Spare wheel stowing, holding, or mounting arrangements external to the vehicle body attached beneath the vehicle body
Abstract
The invention relates to the technical field of vehicle protection, in particular to a high-safety truck rear-end collision prevention structure. The sliding rail is used for being fixed on a girder at the tail part of the truck and is arranged along the length direction of the truck; the slide block is arranged on the slide rail; the placing frame is arranged at the lower side of the sliding block in a lifting way; the spare tire is detachably arranged on the placing frame and extends out of the tail part of the placing frame; one end of the stop lever is rotatably connected with the crossbeam; the stop lever is used for being pushed by the placing frame to rotate when the sliding block slides forwards so as to enable the other end to be abutted against the ground. According to the technical scheme of the invention, as the spare tire is a flexible part, the collision of the car can be buffered, and casualties are reduced; in addition, after the collision, the stop lever is abutted against the ground, so that part of the impact force of the car can be transmitted to the ground by the stop lever, and the impact force of the car on a girder of the truck can be reduced.
Description
Technical Field
The invention relates to the technical field of vehicle protection, in particular to a high-safety rear-end collision prevention structure for a truck.
Background
With the development of economy and the increase of freight volume, truck transportation is becoming an irreplaceable transportation mode. Because the chassis of the truck is high, the rigidity and the strength of the carriage are high, and the car is short, in an accident, the car can easily drill from the tail part of the truck to the lower part of the truck body, so that the car is directly extruded and deformed seriously by a girder or a bottom plate of the truck carriage, even cut, and casualties are caused. In order to prevent the car from rear-end collision with the truck and to dig into the bottom of the truck, a rear-end collision prevention structure is generally required to be installed at the tail of the truck.
At present, as shown in fig. 1, patent No. CN105015467A discloses a rear-end collision prevention structure, which includes a movable bottom plate 2, a first baffle plate 3a-1, a second baffle plate 3a-2 and an expansion link 3b, wherein one end of the movable bottom plate 2 is hinged to a girder 1 at the tail of a truck, one end of the first baffle plate 3a-1 is hinged to the girder 1, one end of the second baffle plate 3a-2 is hinged to the other end of the movable bottom plate 2, and the other end of the first baffle plate 3a-1 is hinged to the other end of the second baffle plate 3 a-2; one end of the telescopic rod 3b is connected with the girder 1, and the other end is connected with the hinged part of the first baffle 3a-1 and the second baffle 3 a-2. When the telescopic rod 3b is telescopic, the first baffle 3a-1 and the second baffle 3a-2 can be driven to be opened or closed relatively, so that the movable bottom plate 2 can be driven to rotate, and the height of the tail end of the movable bottom plate 2 from the ground can be adjusted. The movable bottom plate 2 is matched with the first baffle plate 3a-1 and the second baffle plate 3a-2, so that the movable bottom plate can stop the car and prevent the car from entering the bottom of the truck.
The rear-end collision prevention structure has at least the following defects: 1. when a rear-end collision accident happens, the sedan collides with the rear-end collision prevention structure at high speed, and the rear-end collision prevention structure is completely arranged on the girder 1 and can transmit impact energy to the girder 1 of the truck, so that the girder 1 of the truck is greatly damaged, and the maintenance cost is high; 2. when the speed of the car is too high, the first baffle 3a-1 and the second baffle 3a-2 are easy to crash, and the inclined telescopic rod 3b is easy to insert into the carriage of the car to cause more serious injury to people, so that the potential safety hazard needs to be solved urgently.
Disclosure of Invention
In view of this, the present invention provides a highly safe rear-end collision prevention structure for a truck, and mainly aims to solve the technical problems of how to improve the safety performance of the truck and reduce the damage to a truck beam after the truck is impacted.
In order to achieve the purpose, the invention mainly provides the following technical scheme:
the embodiment of the invention provides a truck rear-end collision prevention structure with high safety, which comprises a slide rail, a slide block, a placing frame, a spare tire and a stop lever, wherein the slide rail is arranged on the front end of the spare tire; the sliding rail is used for being fixed on the girder at the tail of the truck and arranged along the length direction of the truck; the sliding block is arranged on the sliding rail; the placing frame is arranged at the lower side of the sliding block in a lifting manner; the spare tire is detachably arranged on the placing frame and extends out of the tail part of the placing frame; one end of the stop lever is rotatably connected with the crossbeam; the stop lever is pushed by the placing frame to rotate when the sliding block slides forwards, so that the other end of the stop lever is abutted against the ground; the rear-end collision prevention structure further comprises a connecting piece, the connecting piece is connected with the placing frame, and one end of the connecting piece is columnar and is provided with an external thread; the one end of the connecting piece passes through the sliding block from the lower part and is connected with the nut piece above the sliding block; the crossbeam comprises a first crossbeam, a second crossbeam and a third crossbeam which are sequentially arranged from front to back at intervals; one end of the stop lever is rotatably connected to the first cross beam; the one end of connecting piece is located between second crossbeam and the third crossbeam, the one end of connecting piece is used for when the slider slides forward to extreme position with the second crossbeam offsets.
Optionally, a sliding structure is arranged between the placing frame and the connecting piece, and the placing frame is used for lifting relative to the connecting piece through the sliding structure; the truck tail anti-collision structure further comprises a second elastic piece, and the second elastic piece is used for providing force for enabling the placing frame to be relatively far away from the connecting piece.
Optionally, the sliding structure comprises a hanging groove arranged in the middle of the connecting piece, the hanging groove penetrates through two sides of the connecting piece, and the placing frame is hung in the hanging groove through a hook; the placing rack slides along the hanging groove through the hook so as to be lifted relative to the connecting piece.
Optionally, the truck rear-end collision prevention structure with high safety further comprises a guide structure, and the guide structure comprises a guide post and a guide cylinder; one of the guide post and the guide cylinder is arranged on the sliding block, and the other guide post and the guide cylinder are arranged on the placing frame; the guide post is used for being inserted into the guide cylinder so as to guide the lifting of the placing frame.
Optionally, the number of the guide structures is more than two, and the guide structures are arranged along the circumferential direction of the placing frame.
By means of the technical scheme, the truck rear-end collision prevention structure with high safety at least has the following beneficial effects:
1. the spare tire is a flexible part, so that the impact of the car can be buffered, and casualties are reduced; in addition, as the spare tire is a part of the truck, other buffer devices do not need to be additionally and independently arranged, and the spare tire has the advantage of reducing the cost;
2. after the collision, the stop lever abuts against the ground, so that part of the impact force of the car can be transmitted to the ground by the stop lever, the impact force of the car on the girder of the truck can be reduced, the damage to the girder when the truck is collided is reduced, and the maintenance cost of the girder of the truck is reduced;
3. the placing rack can be lifted relative to the sliding block, so that the height of the placing rack can be adjusted according to actual conditions, the passing of a truck is not influenced, and the rear-end collision of a car can be prevented;
4. the rack is in sliding fit with the connecting piece in the height direction, and the second elastic piece is arranged between the rack and the connecting piece, so that the height of the rack can be adaptively adjusted within a set range, and the rack is prevented from being rubbed by the ground when a truck passes through a steep slope.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.
Drawings
FIG. 1 is a schematic diagram of a rear-end collision prevention structure in the prior art;
fig. 2 is an exploded view of a truck rear-end collision prevention structure and a truck partial girder according to an embodiment of the present invention;
FIG. 3 is a schematic structural view of a truck rear-end collision prevention structure mounted on a truck frame and having high safety according to an embodiment of the present invention;
FIG. 4 is a schematic structural view of a truck rear-end collision prevention structure mounted on a truck frame and having high safety according to an embodiment of the present invention;
FIG. 5 is an enlarged schematic view of the structure at A in FIG. 2;
fig. 6 is a top view of the high security rear-end collision prevention structure of the truck of fig. 4 mounted to a truck frame after a collision.
Reference numerals: 1. a girder; 2. a slide rail; 3. a slider; 4. placing a rack; 5. a spare tire; 6. a stop lever; 7. a rotating member; 8. inserting a ground plug; 9. a connecting portion; 10. a first rotating shaft; 11. a second rotating shaft; 12. a connecting member; 13. hooking; 14. a guide post; 15. a guide cylinder; 16. a first baffle plate; 17. a second baffle; 18. a nut member; 61. one end of the stop lever; 62. the other end of the stop lever; 71. a guide hole; 101. a first cross member; 102. a second cross member; 103. a third cross member; 120. hanging a groove; 121. one end of the connecting piece; 201. and a guide groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
As shown in fig. 2, an embodiment of the present invention provides a highly safe rear-end collision prevention structure for a truck, which includes a slide rail 2, a slider 3, a rack 4, a spare tire 5, and a stop lever 6. The slide rail 2 is used for being fixed on a girder 1 at the tail of the truck and is arranged along the length direction of the truck. The truck comprises a truck body, a truck tail, a front end, a rear end and a front end, wherein the truck head is located at one end in the length direction, and the truck tail is located at the other end in the length direction. The sliding block 3 is arranged on the sliding rail 2, and the sliding block 3 can slide along the sliding rail 2 to move along the length direction of the truck. The placing frame 4 is arranged at the lower side of the sliding block 3 in a liftable mode. The slide block 3 can drive the placing rack 4 to move together when sliding along the slide rail 2. The spare tire 5 is detachably arranged on the placing frame 4, the spare tire 5 is provided with screw holes, and the spare tire 5 can be arranged on the placing frame 4 through screws. The spare tire 5 extends out of the tail part of the placing frame 4 so as to receive the collision impact of the car conveniently. As shown in fig. 3 and 4, one end 61 of the stop lever 6 is rotatably connected to the girder 1, for example, by a rotating shaft or a ball bearing. The stop lever 6 is pushed by the placing frame 4 to rotate when the sliding block 3 slides forwards, so that the other end 62 of the stop lever 6 is pressed against the ground.
In the above example, as shown in fig. 3 and 4, when a rear-end collision accident of a car occurs on a truck, the head of the car first hits the spare tire 5 and pushes the placing frame 4 and the sliding block 3 to slide forward along the sliding rail 2, and at the same time, the placing frame 4 pushes the stop lever 6 to rotate until the stop lever 6 rotates until the other end 62 abuts against the ground. Wherein, spare tyre 5 is the flexible component, and it can play the cushioning effect, reduces the impact force of car, reduces the casualties. In addition, since the spare tire 5 is a component of the truck itself, there is no need to separately provide another buffer device, which has an advantage of reducing costs. In addition, after the truck is impacted, the stop lever 6 abuts against the ground, so that part of impact force of the car can be transmitted to the ground by the stop lever 6, the impact force of the car on the truck girder 1 can be reduced, the damage to the girder 1 caused by the impact of the truck is reduced, and the maintenance cost of the truck girder 1 is reduced.
Here, it should be noted that: in order to further improve the buffering effect, the highly safe rear-end collision prevention structure of the truck may further include a first elastic member, such as a spring or a flexible rubber. The first elastic member may be disposed between the truck girder 1 and the sliding block 3, and the first elastic member is used to provide a force for returning the sliding block 3 to an initial position. When the anti-collision device is impacted by a car, the first elastic piece can be matched with the spare tire 5 to buffer the impact of the car.
In order to realize the function of pushing the stop lever 6 to rotate by the rack 4 when the slide block 3 slides forwards, as shown in fig. 5, a rotating member 7 may be disposed on the rack 4. The rotating member 7 may be connected to the rack 4 by a rotating shaft or a ball bearing to rotate relative to the rack 4. Preferably, the rotating member 7 is rotatably disposed on the placing frame 4 through a rotating shaft. For the sake of distinction from the spindle hereinafter, the spindle is here taken as the first spindle 10. The rotor 7 is also provided with a guide hole 71, and the aforementioned stopper 6 passes through the guide hole 71. Wherein, the placing rack 4 is used for pushing the stop lever 6 to rotate through the hole wall of the guide hole 71.
In the above example, since the rotation component 7 is rotatable, when the rack 4 pushes the stop lever 6 to rotate, the guide hole 71 on the rotation component 7 can adapt to the angle of the stop lever 6, so that the rotation component 7 can smoothly convert the translational motion of the rack 4 into the rotation of the stop lever 6, thereby realizing the function of pushing the stop lever 6 to rotate when the slider 3 drives the rack 4 to slide along the slide rail 2.
Here, it should be noted that: in a specific application example, one end 61 of the stop lever 6 is connected to the girder 1 through a rotating shaft so as to rotate relative to the girder 1. Specifically, as shown in fig. 3, the one end 61 of the blocking lever 6 is provided with a connecting portion 9, and the connecting portion 9 may be a connecting plate or the like. The connecting part 9 is rotatably connected to the girder 1 via a shaft, which is now taken as the second shaft 11 for the purpose of distinguishing from the shaft above. The second shaft 11 is parallel to the first shaft 10.
Further, as shown in fig. 3, the other end of the stop lever 6 may be provided with a ground plug 8, and the other end 62 of the stop lever 6 is used for abutting against the ground through the ground plug 8. Particularly, when the rack 4 pushes the stop lever 6 to rotate, the stop lever 6 is impacted to nail the ground inserting head 8 into the ground so as to increase the buffering effect of the ground on the car and further reduce the impact force of the car on the truck girder 1.
In a specific application example, the aforementioned ground plug 8 may have a plate shape and be perpendicular to the stop lever 6. The ground inserting head 8 is preferably made of steel, and the ground inserting head 8 and the stop lever 6 are matched to form a structure similar to a hoe so as to facilitate the ground inserting head 8 to be inserted into the ground when the stop lever 6 rotates.
In order to realize the function that the placing frame 4 can be lifted relative to the sliding block 3, as shown in fig. 2, the truck rear-end collision prevention structure with high safety of the invention can further comprise a connecting piece 12. The connecting piece 12 is connected with the placing frame 4, and the two can be fixedly connected, such as welding and the like, or movably connected, such as hinging and the like. One end 121 of the connector 12 is cylindrical and has an external thread. The one end 121 of the connecting member 12 passes through the slider 3 from below and is connected to the nut member 18 above the slider 3. Wherein, through screwing nut spare 18, can adjust the height that connecting piece 12 wore out slider 3 to connecting piece 12 can drive rack 4 and be located the ascending different positions of direction of height, and then plays the function of adjusting the height of rack 4.
As shown in fig. 6, the girder 1 includes a first cross member 101, a second cross member 102 and a third cross member 103 which are sequentially arranged from front to back at intervals. Here, it should be noted that: the front-back direction is the length direction of the truck, the head of the truck is front, and the tail of the truck is rear. The aforementioned one end 61 of the bar 6 is pivotally connected to the first beam 101. The one end 121 of the connecting member 12 is located between the second beam 102 and the third beam 103. The one end 121 of the connecting piece 12 is used for abutting against the second cross beam 102 when the sliding block 3 slides forwards to the limit position, the arrangement is mainly to transmit the impact force born by the collision of the collision avoidance device to the girder 1 through the connecting piece 12, and the strength of the girder 1 is better, and the collision avoidance device can be prevented from being directly damaged by collision or even being broken to lose the collision avoidance effect due to the powerful support of the girder 1.
Further, a sliding structure may be disposed between the rack 4 and the connecting member 12, and the rack 4 is used for being lifted relative to the connecting member 12 through the sliding structure. The truck tail anti-collision structure further comprises a second elastic piece, wherein the second elastic piece can be a spring or flexible rubber and the like, and can be arranged between the placing frame 4 and the connecting piece 12. The second spring is used to provide a force to the placement frame 4 relatively away from the connecting member 12.
In the above example, after the anti-collision device of the present invention is mounted on a truck, since the position of the placing frame 4 is relatively low, when the truck passes through a steep slope, the placing frame 4 is easily scratched on the ground and damaged or even crashed by the ground. And through the second elastic piece, the height of the placing frame 4 can be adjusted in a self-adaptive manner, so that the rubbing and the impact on the ground can be buffered, and the placing frame 4 is prevented from being rubbed by the ground when a truck passes through a steep slope.
As shown in fig. 5, the sliding structure may include a hanging groove 120, and the hanging groove 120 is disposed at a middle portion of the connection member 12. The hanging groove 120 penetrates both sides of the connecting member 12. The rack 4 is hung in the hanging groove 120 through the hook 13, and the hook 13 and the hanging groove 120 are identical in width and are in sliding fit. Wherein, the placing rack 4 slides along the hanging groove 120 through the hook 13 to lift relative to the connecting piece 12. Here, it should be noted that: the second elastic member may be disposed in the hanging groove 120, and one end of the second elastic member is connected to the hook 13, and the other end of the second elastic member is connected to a groove wall of the hanging groove 120.
In order to improve the lifting precision of the placing frame 4, preferably, a guide structure may be provided to guide the lifting of the placing frame 4. For example, in a specific application example, as shown in fig. 3, the guide structure may include a guide post 14 and a guide cylinder 15. Wherein, one of the guide post 14 and the guide cylinder 15 is arranged on the slide block 3, and the other is arranged on the placing frame 4. The guide posts 14 are inserted into the guide cylinders 15 to guide the elevation of the rack 4.
Above-mentioned guide structure's quantity can be more than two, and sets up along rack 4's circumference to improve the direction effect to rack 4 lift. Preferably, as shown in fig. 2, the number of the guiding structures is four, and the guiding structures are arranged at four corners of the placing frame 4 in a one-to-one correspondence manner.
As shown in fig. 2, the aforementioned slide rail 2 may include two oppositely disposed guide rails, and one side of each of the two opposite guide rails is provided with a guide groove 201. One end of the slider 3 is inserted into the guide groove 201 of one guide rail, and the other end is inserted into the guide groove 201 of the other guide rail. The two guide rails in this example cooperate to guide the sliding movement of the slider 3.
In order to prevent the sliding block 3 from falling out of the guide rails, it is preferable that one end of the two guide rails is provided with a first baffle 16, for example, by screw fastening. The other ends of the two guide rails are provided with second baffles 17, and similarly, the second baffles 17 can also be fixedly connected to the two guide rails through screws.
In a specific application example, as shown in fig. 2, the rack 4 may be a box with an opening at one end. Spare tire 5 is used for installing in the box, and the one end of lateral part stretches out from the opening, and the other end of lateral part offsets with the bottom plate of box, so when spare tire 5 received the striking, the bottom plate of box can provide the support to spare tire 5 to supplementary spare tire 5 resists outside striking, improves spare tire 5's crashworthiness.
The working principle and preferred embodiments of the present invention are described below.
The invention aims to design a high-safety truck rear-end collision prevention structure, and a spare tire 5 which is a part of a truck is used as an anti-collision part to resist rear-end collision of a car. Particularly, when the car overtakes the rear truck at a high speed, the head of the car firstly collides with the spare tire 5 extending out of the placing frame 4, the spare tire 5 drives the placing frame 4 and the sliding block 3 to move forwards after being collided, the placing frame 4 drives the stop lever 6 to rotate through the rotating part 7 when moving forwards until the other end 62 of the stop lever 6 abuts against the ground, and at the moment, the stop lever 6 can be matched with the spare tire 5 to stop the car to continue to move forwards. Wherein, because spare tyre 5 is the flexible member to can cushion the striking of car, reduce casualties. In addition, since the spare tire 5 is a component of the truck itself, there is no need to separately provide another buffer device, which has an advantage of cost reduction. In addition, after the truck is impacted, the stop lever 6 abuts against the ground, so that part of impact force of the car can be transmitted to the ground by the stop lever 6, the impact force of the car on the truck girder 1 can be reduced, the damage to the girder 1 caused by the impact of the truck is reduced, and the maintenance cost of the truck girder 1 is reduced.
In addition, because the rack 4 can go up and down relative to the slider 3 to can adjust the height of rack 4, with according to actual conditions with the height control of rack 4 to neither influence the freight train and pass, can prevent the position of car rear-end collision again. The placing frame 4 is in sliding fit with the connecting piece 12 in the height direction, and a second elastic piece is arranged between the placing frame 4 and the connecting piece, so that the height of the placing frame 4 can be adjusted in a self-adaptive mode within a set range, and the placing frame 4 is prevented from being rubbed by the ground when a truck passes through a steep slope.
Here, it should be noted that: in the case of no conflict, a person skilled in the art may combine the related technical features in the above examples according to actual situations to achieve corresponding technical effects, and details of various combining situations are not described herein.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (1)
1. A truck rear-end collision prevention structure with high safety is characterized by comprising a slide rail (2), a slide block (3), a placing frame (4), a spare tire (5) and a stop lever (6); the sliding rail (2) is used for being fixed on a girder (1) at the tail of the truck and arranged along the length direction of the truck; the sliding block (3) is arranged on the sliding rail (2); the placing rack (4) is arranged on the lower side of the sliding block (3) in a lifting manner; the spare tire (5) is detachably arranged on the placing frame (4) and extends out of the tail part of the placing frame (4); one end (61) of the stop lever (6) is rotatably connected with the girder (1); the stop lever (6) is pushed by the placing frame (4) to rotate when the sliding block (3) slides forwards, so that the other end (62) is abutted against the ground;
a rotating piece (7) is arranged on the placing frame (4), a guide hole (71) is formed in the rotating piece (7), and the stop lever (6) penetrates through the guide hole (71); the placing frame (4) is used for pushing the stop lever (6) to rotate through the hole wall of the guide hole (71);
the rear-end collision prevention structure further comprises a connecting piece (12), the connecting piece (12) is connected with the placing rack (4), and one end (121) of the connecting piece (12) is columnar and is provided with an external thread; the one end (121) of the connecting piece (12) passes through the sliding block (3) from the lower part and is connected with a nut piece (18) above the sliding block (3);
the girder (1) comprises a first cross beam (101), a second cross beam (102) and a third cross beam (103) which are sequentially arranged from front to back at intervals; the one end (61) of the stop lever (6) is rotatably connected to the first cross beam (101); the end (121) of the connecting piece (12) is located between the second cross beam (102) and the third cross beam (103), and the end (121) of the connecting piece (12) is used for abutting against the second cross beam (102) when the sliding block (3) slides forwards to the limit position;
a sliding structure is arranged between the placing frame (4) and the connecting piece (12), and the placing frame (4) is used for lifting relative to the connecting piece (12) through the sliding structure;
the truck tail anti-collision structure further comprises a second elastic piece, and the second elastic piece is used for providing a force for enabling the placing frame (4) to be relatively far away from the connecting piece (12);
the sliding structure comprises a hanging groove (120) arranged in the middle of the connecting piece (12), the hanging groove (120) penetrates through two sides of the connecting piece (12), and the placing frame (4) is hung in the hanging groove (120) through a hook (13); the placing frame (4) slides along the hanging groove (120) through the hook (13) to lift relative to the connecting piece (12); the truck rear-end collision prevention structure with high safety further comprises a guide structure, wherein the guide structure comprises a guide post (14) and a guide cylinder (15); one of the guide post (14) and the guide cylinder (15) is arranged on the slide block (3), and the other is arranged on the placing rack (4); the guide post (14) is inserted into the guide cylinder (15) to guide the lifting of the placing rack (4);
the number of the guide structures is more than two, and the guide structures are arranged along the circumferential direction of the placing frame (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010425564.5A CN111469790B (en) | 2020-05-19 | 2020-05-19 | High freight train of security prevents structure of knocking into back |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010425564.5A CN111469790B (en) | 2020-05-19 | 2020-05-19 | High freight train of security prevents structure of knocking into back |
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| CN111469790A CN111469790A (en) | 2020-07-31 |
| CN111469790B true CN111469790B (en) | 2022-08-09 |
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| CN202010425564.5A Active CN111469790B (en) | 2020-05-19 | 2020-05-19 | High freight train of security prevents structure of knocking into back |
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| CN112722117B (en) * | 2020-09-02 | 2022-10-14 | 嘉兴日名环交通安全设备有限公司 | Anti-collision absorption device with vehicle stopping function |
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| CN103465884A (en) * | 2013-08-09 | 2013-12-25 | 宁波市巴颜喀拉电子有限公司 | Anti-collision energy release device of vehicle |
| CN105584440A (en) * | 2015-03-05 | 2016-05-18 | 余姚市陆埠镇鸿杰纸箱厂 | Collision buffer energy-absorption device for automobile |
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| US2274440A (en) * | 1940-07-23 | 1942-02-24 | Tozier Margaret Payne | Parking bumper for motor vehicles |
| CN2471642Y (en) * | 2001-04-09 | 2002-01-16 | 李清洋 | Spare tyre style collisionproof safety device on rear of vehicle |
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