CN2447230Y

CN2447230Y - Rear end collision preventor for medium-light truck

Info

Publication number: CN2447230Y
Application number: CN 00236681
Authority: CN
Inventors: 李博良; 李博成
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-05-26
Filing date: 2000-05-26
Publication date: 2001-09-12
Anticipated expiration: 2010-05-26

Abstract

The utility model relates to a rear end collision preventing device for a load-carrying vehicle, which is arranged on the erar lower part of the load-carrying vehicle. The outside of both side plates of a fixed frame are respectively fixedly provided with a reinforcing ring and the reinforcing ring is sheathed on a pin shaft. The top sections of two curving inner walls of the fixed frame are respectively fixedly provided with a vertical round rod. The middle section on the inside of a backplane is fixedly provided with two long strip shim plates. The inner sides of two side plates on the top section of a swing arm are respectively fixedly provided with the reinforcing plate which is movably sheathed on the pin shaft. The middle section and the lower section of the inner walls of the swing arm are fixedly provided with two opposite reinforcing channel steels. A plurality of inclined supporting pipes are arranged between a vertical pipe of a frame and a rear connecting plate and a plurality of inclined supporting pipes are arranged between two endless pipes. Thus, the damage of collision to a motor car can be relieved, and the accident that the motor car drives in the rear lower part of a load-carrying vehicle can be prevented.

Description

Middle light truck rear lower swinging type protects the device that knocks into the back

The utility model relates to the anti-device that knocks into the back of a kind of load-carrying vehicle rear lower, is particularly suited for middle light truck (below 8 tons).

At present, the most of highway of China remains small passenger car and load-carrying vehicle all-purpose road, the knock into the back traffic accident of load-carrying vehicle rear lower of small passenger car often appears easily, though, also some load-carrying vehicle rear lower directly sets firmly the plane baffle plate, in case small passenger car knocks into the back, but, the collision speed difference of car owing to knock into the back, the energy size of colliding is also different, often is not to cause lorry rear lower and small passenger car head to damage, and is exactly that small passenger car knocks into the back in the loading rear lower, and load-carrying vehicle also can collide with said fixing plane baffle plate when running into obstacle in travelling.

In view of this, the purpose of this utility model provides a kind of middle light truck rear lower swinging type and protects the device that knocks into the back, it is at the load-carrying vehicle rear lower swing arm type structure that a kind of energy multiple spot plastic deformation absorbs impact energy to be set, and load-carrying vehicle travel in road surface when running into obstacle, the swing arm type structure can also be lifted automatically.

The purpose of this utility model is achieved in that it comprises two swing arms, one framework, two fixed mounts, two elastic locking devices and two diagonal ligaments, wherein, one framework is by two endless tubes, many standpipes, two back connecting panels and the folded pipe of many groups are formed, this framework is connected to two swing arm hypomeres with its two backs connecting panel, and two swing arms top section is articulated in respectively on the bearing pin of two fixed mounts, it is characterized in that: the biside plate outside at fixed mount sets firmly a reinforcing pad respectively, and be socketed on the bearing pin, set firmly one respectively at section place, fixed mount two curved inner wall top again and establish perpendicular pole, and the inboard stage casing of its base plate sets firmly two segment length's bar backing plates; Set firmly a brace panel respectively in a swing arm top section biside plate inboard and be actively set on the bearing pin, strengthen channel-section steels and on this swing arm stage casing and hypomere inwall, set firmly relative two; Between the standpipe of framework and back connecting panel and in the middle of two endless tubes, be provided with many diagonal ligament pipes.

Described many support tubes form the M word shape.

Owing to adopt such scheme: can alleviate the damage of small passenger car when colliding, and can prevent that small passenger car from piercing in the load-carrying vehicle rear lower.

Below in conjunction with drawings and Examples the utility model is further specified.

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

The A-A cross-sectional schematic of Fig. 2 the utility model exemplary embodiments Fig. 1.

The B-B generalized section of Fig. 3 the utility model exemplary embodiments Fig. 1.

Fig. 4 the utility model exemplary embodiments schematic rear view.

Fig. 5 the utility model exemplary embodiments schematic top plan view.

Fig. 6 the utility model exemplary embodiments is subjected to small passenger car to collide back deformation state figure.

Among the figure: 1, swing arm, 11, brace panel, 12, strengthen channel-section steel, 13, strengthen channel-section steel, 14, brace panel, 2, framework, 21, endless tube, 22, standpipe, 23, the back connecting panel, 24, folded pipe, 25, diagonal ligament pipe, 3, fixed mount, 31, bearing pin, 32, perpendicular pole, 33, reinforcing pad, 34, rectangular backing plate, 4, elastic locking device, 5, diagonal ligament, 6, the load-carrying vehicle crossbeam.

Present embodiment comprises two swing arms 1, a framework 2, two fixed mounts 3, two elastic locking devices 4 and two diagonal ligaments 5, shown in Fig. 1～5, wherein:

Two fixed mounts 3 are with the U-steel of bottom panel captive joint (as: welding) on the underframe aft end face of load-carrying vehicle crossbeam 6, as shown in Figure 1, wear a bearing pin 31 on the biside plate of this fixed mount 3, belong to prior art; Set firmly a reinforcing pad 33 respectively in the biside plate of this fixed mount 3 outside again and be socketed on the bearing pin 31, with the side plate hole that increases fixed mount 3 and the area of contact of bearing pin 31; Section place, 3 liang of curved inner wall of this fixed mount top sets firmly one section perpendicular pole 32 respectively, and the inboard stage casing of its base plate sets firmly two segment length's bar backing plates 34, keeps out flexural deformation after swing arm 1 is subjected to impulsive contact force with enhancing, as shown in Figure 2.

Two swing arms 1 are that the both sides plate hole activity with its top section is articulated in the U-steel on the bearing pin 31, belong to prior art; This section biside plate inboard, swing arm 1 top sets firmly a brace panel 11 respectively and is actively set on the bearing pin 31, with the side plate hole of increase swing arm 1 and the area of contact of bearing pin 31, and the corresponding brace panel 14 that sets firmly on swing arm 1 base plate, to strengthen swing arm 1 bending strength, as shown in Figure 2, strengthen channel-section steels 12,13 and on swing arm 1 stage casing and hypomere inwall, set firmly relative two, to strengthen the bending strength of swing arm 1 more, as shown in Figure 3.

One framework 2 is by two endless tubes 21, many standpipes 22, two back connecting panels 23, the many diagonal ligament pipes 25 of folded pipe 24 of many groups and composition M font constitute, as Fig. 4, shown in 5, two back connecting panels 23 with framework 2 are connected on two swing arms, the 1 hypomere plate outer side, wherein two endless tubes, 21 rear sides connect many standpipes 22, and its front side connects two back connecting panels 23, connect the folded pipe 24 of many groups in the middle of each endless tube 21, between standpipe 22 and back connecting panel 23, and in the middle of two endless tubes 21, be provided with many diagonal ligament pipes 25 that form the M font, with the intensity of reinforced frame 2, promptly absorb the collision ability.

Two elastic locking devices 4 are made up of the elastic clip of corresponding section on the horizontal pin of swing arm 1 front side and the fixed mount 3, horizontal pin is clamped in the elastic clip (to push away swing arm 1) under thrust forward, make swing arm 1 perpendicular positioning motionless, and under thrust backward (during the load-carrying vehicle cruising, kept out by ground obstacle) horizontal pin disengaging spring clip, swing arm 1 is put backward around bearing pin 31, as shown in Figure 1, belongs to prior art.

Two diagonal ligaments (reinforcement channel-section steel) 5 connect load-carrying vehicle crossbeam 6 and fixed mount 3, strengthen the Joint strenght of fixed mount 3 and load-carrying vehicle crossbeam 6, as shown in Figure 1, belong to prior art.

The protection of present embodiment is knocked into the back device in bump test energy-absorbing deformation state that is subjected to three kinds of different speed of a motor vehicle of small passenger car and data following (as shown in Figure 6):

When small passenger car with 25 kilometers/hour collisions of the speed of a motor vehicle in during light truck (below 8 tons), having only endless tube framework 2 to be compressed deformation displacement is about 160mm, absorbs about 18338 joules of energy, is equivalent to weight 8.7 ton forces;

When small passenger car with 30 kilometers/hour collisions of the speed of a motor vehicle in during light truck, division ring tube frame 2 is compressed distortion and absorbs outside the energy of 1/4-1/5, residue is collided and is acted in the swing arm 1, making swing arm 1 maximum flexibility displacement is about 180mm, absorb about 35156 joules of energy, be equivalent to weight 14.4 ton forces;

When small passenger car with 35 kilometers/hour collisions of the speed of a motor vehicle in during light truck, remove framework 2 and swing arm 1 distortion absorption energy 2/4-3/5, remaining 2/4-2/5 crash energy acts on the fixed mount 3, and multiple spot many places energy-absorbing deformation displacement is about 60mm on this fixed mount 3, absorbs about 15.6 ton forces of energy.

Claims

1, a kind of middle light truck rear lower swinging type protects the device that knocks into the back.Comprise two swing arms (1), one framework (2), two fixed mounts (3), two elastic locking devices (4) and two diagonal ligaments (5), wherein, one framework (2) is by two endless tubes (21), many standpipes (22), two back connecting panels (23) and many folded pipes of group (24) are formed, this framework (2) is connected to two swing arms (1) hypomere with its two back connecting panel (23), and two swing arms (1) top section is articulated in respectively on the bearing pin (31) of two fixed mounts (3), it is characterized in that: the biside plate outside at fixed mount (3) sets firmly a reinforcing pad (33) respectively, and be socketed on the bearing pin (31), set firmly one section perpendicular pole (32) respectively at section place, fixed mount (3) two curved inner wall top again, and the inboard stage casing of its base plate sets firmly two segment length's bar backing plates (34); Set firmly a brace panel (11) respectively in swing arm (a 1) top section biside plate inboard and be actively set on the bearing pin (31), strengthen channel-section steels (12), (13) and on this swing arm (1) stage casing and hypomere inwall, set firmly relative two; At the standpipe (22) of framework (2) with afterwards between the connecting panel (23) and at the middle many diagonal ligament pipes (25) that are provided with of two endless tubes (21).

2, protect the device that knocks into the back by the described middle light truck rear lower swinging type of claim 1, it is characterized in that: described many support tubes (25) form the M word shape.