CN202038262U

CN202038262U - Rear-end prevention device at lower rear portion of large or medium size truck

Info

Publication number: CN202038262U
Application number: CN2011200719327U
Authority: CN
Inventors: 杭文
Original assignee: Southeast University
Current assignee: Southeast University
Priority date: 2011-03-16
Filing date: 2011-03-16
Publication date: 2011-11-16
Anticipated expiration: 2021-03-16

Abstract

The utility model relates to a rear-end prevention device arranged at the lower rear portion of a large or medium size truck, which comprises horizontal supporting devices (1), lifting arms (7), swinging arms (3) arranged at the rear side of a truck frame (8) and capable of swinging backwards, an anti-collision frame (2) connected with the swinging arms, fixing seats (4) arranged at the rear portion of the rear end of the truck frame (8) and supporting plates (5) arranged at the lower portion of the rear end of the truck frame (8), wherein the horizontal supporting devices (1) and the lifting arms (7) are arranged on two sides of the truck frame (8), and the swinging arms (3) is movably connected with the fixing seats (4). The rear-end prevention device at the lower portion of the large or medium size truck can prevent small automobiles from running into the bottom of the truck and can prevent passenger area of the small automobiles from colliding with the tail of the truck.

Description

The anti-device that knocks into the back of big-and-middle-sized goods carrying vehicle rear lower

Technical field

The utility model relates to the anti-device that knocks into the back of a kind of goods carrying vehicle rear lower, is particularly useful for big-and-middle-sized goods carrying vehicle (more than 5 tons).

Background technology

At present, the knock into the back traffic accident of lorry rear lower of roadlice often takes place in high-grade highway of China and city expressway, has caused serious personal casualty situation.Though, a lot of lorry rear lowers are equipped with the plane baffle plate, in case roadlice knocks into the back, but, the collision speed of roadlice is often very fast owing to knock into the back, crash energy is bigger, and the protective device fixed form that present lorry is generally installed is unreliable, structural strength is not enough, protective range is not enough, is difficult to stop roadlice to pierce big-and-middle-sized lorry afterbody.It is less often to cause the roadlice headstock to damage, but the occupant area at A post and rear portion thereof suffers the badly damaged situation.And lorry runs into unfavorable terrain or obstacle in travelling, and has the possibility that bumps with said fixing plane baffle plate.

Granted patent CN 1123465C and CN 1116185C have designed the anti-device that knocks into the back in the mobilizable lorry of two classes rear portion respectively, have solved preferably the knock into the back crashproof problem of roadlice of low speed.But the supporting construction undercapacity of the anti-device that knocks into the back of above-mentioned two classes; when roadlice can't prevent that it from piercing the lorry afterbody so that the speed of a motor vehicle knocks into the back faster, be difficult to protect effectively the driver and crew of roadlice, and above-mentioned two class apparatus structure complexity; install additional or modification difficulty big, be not easy to promote.

Summary of the invention

Technical matters: the technical problems to be solved in the utility model provides the anti-device that knocks into the back of a kind of big-and-middle-sized goods carrying vehicle rear lower, it is at the goods carrying vehicle rear lower horizontal support structure that one cover could effectively catch and bear the swing arm type structure of roadlice headstock bump and transmit impulsive force to be set, effective support of wheels behind the support lorry, plastic deformation by this device and the higher position of roadlice headstock rigidity absorbs impact energy, prevents that roadlice from piercing the lorry bottom and stoping the roadlice occupant area and the lorry tailstock to bump.And goods carrying vehicle is when running into unfavorable terrain or obstacle under steam, and the swing arm type structure can also freely be lifted.

Technical scheme: for solving the problems of the technologies described above, the utility model provides a kind of big-and-middle-sized goods carrying vehicle rear lower the anti-device that knocks into the back, this device comprises the horizontal support device, the arm that are arranged on lorry vehicle frame both sides, be arranged on the stay bearing plate that the swing arm that can swing backward of lorry vehicle frame rear side and the crashproof framework that is attached thereto, the permanent seat that is connected lorry vehicle frame tail end rear portion, swing arm and permanent seat flexibly connected and be connected lorry vehicle frame tail end bottom, and stay bearing plate does not have with swing arm captives joint; Wherein,

Horizontal support device comprises steel pipe, is separately positioned on the front apron and the back shield at these steel pipe two ends and the clip that is arranged on steel tube surface, horizontal support device is bolted on the lorry vehicle frame by arm, the lateral impact power from crashproof framework effectively can be passed to wheels behind the lorry;

Crashproof framework comprises the grooved steel plate, be connected a surface of grooved steel plate the steel floor and with steel floor bonded assembly Steel vertical plate; This crashproof framework is connected the hypomere of swing arm, and the epimere of swing arm is connected on the permanent seat.

Preferably, the steel pipe cross-sectional plane is circular.

Preferably, horizontal support device links to each other with arm by clip, and arm passes through the arm bolted connection on the lorry vehicle frame.

Preferably, pin-and-hole is offered in the permanent seat both sides, and bearing pin runs through this permanent seat by this pin-and-hole, and the epimere of swing arm is connected on the bearing pin of permanent seat.

Beneficial effect: the roadlice that not only can protect generation acutely to knock into the back and clash into; prevent to full duration to pierce the lorry rear lower after roadlice from knocking into the back; simultaneously can also prevent to a certain extent that roadlice from piercing the lorry rear lower from proceeds posterolateral; and not limited by obstacle; simple in structure, easily install additional and keep in repair.

Description of drawings:

Fig. 1 the utility model exemplary embodiments schematic side view.

Horizontal support device schematic three dimensional views among Fig. 2 the utility model exemplary embodiments Fig. 1.

Fig. 3 the utility model exemplary embodiments Fig. 1 middle frame schematic three dimensional views.

Stay bearing plate schematic three dimensional views among Fig. 4 the utility model exemplary embodiments Fig. 1.

Fig. 5 the utility model exemplary embodiments schematic rear view.

Fig. 6 the utility model exemplary embodiments schematic top plan view.

Among the figure: 1, horizontal support device, 10, round steel pipe, 11, the round steel pipe front apron, 12, round steel pipe back shield, 13, clip, 2, framework, 20, grooved steel plate, 21, the steel floor, 22, Steel vertical plate, 3, swing arm, 4, permanent seat, 41, bearing pin, 5, stay bearing plate, 51, the stay bearing plate spring, 6, wheels behind the lorry, 7, arm, 71, arm bolt, 8, the lorry vehicle frame, 9, the roadlice that may knock into the back.

The specific embodiment

Below in conjunction with accompanying drawing the utility model is described further.

The utility model relates to the anti-device that knocks into the back of a kind of big-and-middle-sized goods carrying vehicle rear lower, it mainly is to set firmly a cover horizontal support device by two clips and two arms respectively in big-and-middle-sized lorry vehicle frame two sides of tail, and utilizes permanent seat and swing arm to set firmly the crashproof framework that a cover can be swung at lorry vehicle frame afterbody rear side; Horizontal support device is made up of the baffle plate at a steel pipe and two ends, can rely on lorry after wheels fully support the strong bump that knocks into the back; Crashproof framework is formed by connecting by a grooved steel plate, many steel floors and two Steel vertical plates, can fully bear and transmit impulsive force and keep the globality of framework when roadlice knocks into the back; Crashproof framework and swing arm can serve as that axially put the back with the bearing pin of two permanent seats.Thereby, can stop that roadlice pierces the lorry afterbody and reduces to clash into threat to the roadlice driver and crew greatly when knocking into the back at a high speed, and protective range is big, simple in structure, be easy to install additional.

Referring to Fig. 1-6, the anti-device that knocks into the back of the big-and-middle-sized goods carrying vehicle rear lower that the utility model provides, this device comprises horizontal support device 1, the arm 7 that is arranged on lorry vehicle frame 8 both sides, the swing arm that can swing backward 3 that is arranged on lorry vehicle frame 8 rear sides and the crashproof framework 2 of welding with it, the permanent seat 4 that is welded on lorry vehicle frame 8 tail end rear portions, swing arm 3 and the permanent seat 4 movable stay bearing plates 5 that articulate and be welded on lorry vehicle frame 8 tail end bottoms, and stay bearing plate 5 does not have with swing arm 3 captives joint.

Horizontal support device 1 comprises steel pipe 10, is separately positioned on the front apron 11 and the back shield 12 at these steel pipe 10 two ends and the clip 13 that is arranged on steel pipe 10 surfaces, horizontal support device 1 is bolted on the lorry vehicle frame 8 by arm 7, the lateral impact power from crashproof framework 2 effectively can be passed to wheels 6 behind the lorry.

Crashproof framework 2 comprises grooved steel plate 20, be welded on 20 1 surfaces of grooved steel plate steel floor 21 and with steel floor 21 bonded assembly Steel vertical plates 22; This crashproof framework 2 is welded on the hypomere of swing arm 3, and the epimere of swing arm 3 is articulated on the permanent seat 4.

Steel pipe 10 cross-sectional planes are circular.

Horizontal support device 1 links to each other with arm 7 by clip 13, and arm 7 is connected on the lorry vehicle frame 8 by arm bolt 71.

Be provided with the bearing pin 41 that runs through this permanent seat 4 at this permanent seat 4, the epimere of swing arm 3 is articulated on the bearing pin 41 of permanent seat 4.Permanent seat 4 is made of two parallel vertical channel beams, and the bearing pin 41 that a pair of pin-and-hole and pin joint run through this permanent seat 4 is offered in its both sides, and the epimere of swing arm 3 is connected on the bearing pin 41 of permanent seat 4.

Horizontal support device is in the both sides of lorry vehicle frame (on one side).

Present embodiment comprises two cover horizontal support device 1, four arms 7, framework 2, two swing arms 3, two permanent seats 4, two stay bearing plates 5, shown in Fig. 1～6, wherein:

Horizontal support device 1 is connected on the lorry vehicle frame 8 on Z-shaped arm 7 and by arm bolt 71 by two clips, 13 captive joints (as: welding); As shown in Figure 2, the main body of horizontal support device is a round steel pipe 10, when roadlice 9 knocked into the back, by the back wheels 6 of round steel pipe 10 and the lorry power that withstands shocks jointly, a cover horizontal support device can independently, stably be born the impact of the roadlice that knocks into the back and do not occurred collapsing broken; Steel pipe 10 front ends welding front apron 11, rear end welding back shield 12, increasing the area of contact of wheels 6 and framework 2 behind round steel pipe 10 and the lorry, front apron 11 can have the effect of wheels mudwing behind the lorry concurrently.Horizontal support device is in the both sides of lorry vehicle frame (on one side).

Permanent seat 4 is with the U-steel formula frame of bottom panel captive joint (as: welding) on lorry vehicle frame 8 aft end faces, wears a bearing pin 41 on the biside plate of this U-steel formula fixed mount 4, belongs to prior art.

Swing arm 3 is that the both sides plate hole activity with its top section is articulated in the U-steel formula frame on the bearing pin 41, belongs to prior art.

Stay bearing plate 5 is with the grooved steel plate of bottom panel captive joint (as: welding) on lower surface, lorry vehicle frame 8 rear, to keep the stable of framework 2 and to increase the flexural deformation of keeping out when roadlice knocks into the back after swing arm 3 is subjected to impulsive contact force, shown in Fig. 1,4, leave the gap between the swing arm 3 when stay bearing plate 5 and natural hang and welding one stay bearing plate spring 51 on stay bearing plate 5, when the lorry cruising is met higher obstacle on the way, give swing arm 3 and fall the suitable buffering in back after rise with framework 2 back pendulum.

Framework 2 is to be made of a grooved steel plate 20, many steel floors 21 and two Steel vertical plates 22, and shown in Fig. 3,6, grooved steel plate 20 is welded on each steel floor 21, makes framework 2 fully bear impact when roadlice knocks into the back and keeps the globality of framework 2; Shown in Fig. 1,3, many steel floors 21 are vertically welded on two swing arms, the 3 hypomere plate outer sides, and (as the lorry cruising time, be subjected to keeping out of ground obstacle) put backward with swing arm 3 to make that framework 2 can be under thrust backward; Shown in Fig. 3,5,6, two Steel vertical plates 22 are welded on the many steel floors 21 and are relative with the back shield 12 of horizontal support device 1 but leave certain clearance (in order to avoid horizontal support device 1 bumps with framework 2 under lorry cruising state), so that the impact of roadlice to framework 2 fully is delivered on the horizontal support device 1.

The principle of work of present embodiment is as follows:

Knock into the back when colliding the framework 2 of lorry afterbody when roadlice 9 takes place, impact energy is absorbed by the distortion of wheels 6 behind the distortion of the distortion of the bending of the distortion of framework 2 itself, swing arm 3, stay bearing plate 5, horizontal support device 1 and the lorry in regular turn.Not only can slow down the impulsive force of roadlice gradually, and can be effectively the stressed position of the roadlice that knocks into the back be moved on to more crash-resistant headstock by A post and occupant area, thereby stopping the threat that reduces greatly to clash into when roadlice pierces the lorry afterbody to the roadlice driver and crew.

When lorry itself to overtake the time, when running into obstacle higher on the road surface, framework 2 can rearward be swung and lift with swing arm 3, so but the cut-through thing, then, under the deadweight effect, framework 2 and swing arm 3 can return to the position of stabilized conditions again.

Claims

1. the anti-device that knocks into the back of one kind big-and-middle-sized goods carrying vehicle rear lower is characterized in that: the stay bearing plate (5) that this device comprises the horizontal support device (1), the arm (7) that are arranged on lorry vehicle frame (8) both sides, be arranged on the swing arm that can swing backward (3) of lorry vehicle frame (8) rear side and the crashproof framework (2) that is attached thereto, the permanent seat (4) that is connected lorry vehicle frame (8) tail end rear portion, swing arm (3) and permanent seat (4) flexibly connect and be connected lorry vehicle frame (8) tail end bottom; Wherein,

The clip (13) that horizontal support device (1) comprises steel pipe (10), is separately positioned on the front apron (11) and the back shield (12) at this steel pipe (10) two ends and is arranged on steel pipe (10) surface, horizontal support device (1) is bolted on the lorry vehicle frame (8) by arm (7), the lateral impact power from crashproof framework (2) effectively can be passed to wheels (6) behind the lorry;

Crashproof framework (2) comprises grooved steel plate (20), be connected grooved steel plate (20) surface steel floor (21) and with steel floor (21) bonded assembly Steel vertical plate (22); This crashproof framework (2) is connected the hypomere of swing arm (3), and the epimere of swing arm (3) is connected on the permanent seat (4).

2. the anti-device that knocks into the back of big-and-middle-sized goods carrying vehicle rear lower according to claim 1 is characterized in that: steel pipe (10) cross-sectional plane is for circular.

3. the anti-device that knocks into the back of big-and-middle-sized goods carrying vehicle rear lower according to claim 1, it is characterized in that: horizontal support device (1) links to each other with arm (7) by clip (13), and arm (7) is connected on the lorry vehicle frame (8) by arm bolt (71).

4. the anti-device that knocks into the back of big-and-middle-sized goods carrying vehicle rear lower according to claim 1, it is characterized in that: pin-and-hole is offered in permanent seat (4) both sides, bearing pin (41) runs through this permanent seat (4) by this pin-and-hole, and the epimere of swing arm (3) is connected on the bearing pin (41) of permanent seat (4).