CN103909980A - Hydraulic systems on bus - Google Patents

Hydraulic systems on bus Download PDF

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Publication number
CN103909980A
CN103909980A CN201410110034.6A CN201410110034A CN103909980A CN 103909980 A CN103909980 A CN 103909980A CN 201410110034 A CN201410110034 A CN 201410110034A CN 103909980 A CN103909980 A CN 103909980A
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China
Prior art keywords
compartment
cylinder
hydraulic
hydraulic actuating
liquid storage
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Granted
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CN201410110034.6A
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Chinese (zh)
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CN103909980B (en
Inventor
孙建林
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HAIMEN HUANGHAI PIONEER PARK SERVICES CO., LTD.
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孙建林
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Abstract

The invention provides a hydraulic system on a bus, and belongs to the technical field of automobiles. The technical problems that an existing hydraulic system of a bus is complicated in structure, safety performance of the automobiles cannot be well improved and the like are solved. The bus comprises an external compartment and an internal compartment, the hydraulic system comprises a plurality of first hydraulic cylinders, cylinder bodies of the first hydraulic cylinders are fixedly connected with the external compartment, the hydraulic system further comprises a plurality of second hydraulic cylinders in one-to-one correspondence to the first hydraulic cylinders, piston rods of the second hydraulic cylinders are inserted in the external compartment, a support plate is fixedly arranged on the external compartment, cylinder bodies of the second hydraulic cylinders are fixedly arranged on the support plate, each second hydraulic cylinder is provided with a second liquid storage cavity, one first liquid storage cavity and the corresponding second liquid storage cavity are communicated through a hydraulic pipe, hydraulic system further comprises a plurality of third hydraulic cylinders, a second overflow hole is formed in a cylinder body of each third hydraulic cylinder, and a hydraulic pipe enabling each third liquid storage cavity to be communicated with a liquid storage tank is connected to each second overflow hole. The hydraulic system has the advantages that safety of the automobiles can be improved effectively, and the like.

Description

Hydraulic efficiency pressure system on a kind of school bus
Technical field
The invention belongs to automobile technical field, relate to the hydraulic efficiency pressure system on a kind of school bus.
Background technology
School bus is the vehicle that come and go school for transporting student.Safety in production cuncil office of State Council of the People's Republic of China emphasizes in " traffic safety " 12 " planning ", establish and improve safety of school bus management legal and regulatory systems and safety management system, specify school bus rights-of-way, strengthen school bus supervision, ensure safety of school bus; And specify that school bus must installation satellite positioning and speed-limit device.Visible, safety of school bus is the important topic that the whole society pays close attention to.
In prior art, the endergonic structure of automobile is generally realized by suspension system, also some automobile is provided with energy-absorbing buffering structure at headstock part, and in the time that automobile occurs to clash into, several rivets at headstock place are cut off, thereby absorbs the energy while shock, for vehicle body, so far also there is no other actv. endergonic structures, the inertia kinetic energy of vehicle body while shock in order to double absorption, but, along with the generation of a lot of safety of school bus accidents in 2013, it is especially urgent that the solution of safety of school bus problem seems.
Summary of the invention
The object of the invention is the problems referred to above that exist for existing technology, the hydraulic efficiency pressure system on a kind of school bus is provided, technical matters to be solved by this invention is the safety of simplified structure, raising automobile.
Object of the present invention can realize by following technical proposal:
Hydraulic efficiency pressure system on a kind of school bus, it is characterized in that, school bus comprises an outer compartment and an interior compartment, between described outer compartment and interior compartment, there is gap, described outer compartment has a base plate, the bottom of described interior compartment is by a supporting construction and described base plate sliding block joint, the front end in described outer compartment is provided with an energy-absorption box, between described energy-absorption box and outer compartment, be connected by some guide pillars, described energy-absorption box can with described guide pillar external carriage movements mutually, between described energy-absorption box and outer compartment, there is gap, described hydraulic efficiency pressure system comprises several hydraulic actuating cylinders one, the piston rod of described hydraulic actuating cylinder one is fixedly connected with the front side of interior compartment, the cylinder body of described hydraulic actuating cylinder is fixedly connected with described outer compartment, described hydraulic actuating cylinder has liquid storage cylinder one, described hydraulic efficiency pressure system also comprises and hydraulic actuating cylinder one hydraulic actuating cylinder two one to one, the piston rod of described hydraulic actuating cylinder two is plugged on described outer compartment, on described outer compartment, be fixedly installed a stay bearing plate, the cylinder body of described hydraulic actuating cylinder two is fixedly installed on described stay bearing plate, between the outer end of the piston rod of described hydraulic actuating cylinder two and energy-absorption box, there is gap, described hydraulic actuating cylinder two has liquid storage cylinder two, between described liquid storage cylinder one and liquid storage cylinder two, communicate by hydraulic pipe, on described outer compartment, be fixedly installed a liquid reserve tank, on described hydraulic actuating cylinder two, be provided with overflow weir one, described overflow weir one place is connected with the hydraulic pipe that liquid storage cylinder two is communicated with liquid reserve tank, between described interior compartment and outer compartment, be provided with some retracing springs one, in described liquid storage cylinder two, be provided with retracing spring two, described hydraulic efficiency pressure system also comprises several hydraulic actuating cylinders three, the cylinder body of described hydraulic actuating cylinder three is fixed on described stay bearing plate, the piston rod of described hydraulic actuating cylinder three is plugged on described outer compartment and the outer end of piston rod is fixedly connected with energy-absorption box, between the cylinder body of described hydraulic actuating cylinder three and stay bearing plate, be provided with retracing spring three, described hydraulic actuating cylinder three has liquid storage cylinder three, on the cylinder body of described hydraulic actuating cylinder three, offer overflow weir two, described overflow weir two places are connected with the hydraulic pipe that liquid storage cylinder three is communicated with liquid reserve tank.
When automobile occurs to clash into, energy-absorption box moves to the direction near outer compartment at the directional tagging of guide pillar, promotes the piston rod of hydraulic actuating cylinder three, pressure in liquid storage cylinder three is raise suddenly, hydraulic oil, from overflow weir two overflows to liquid reserve tank, by overflow effect, absorbs the energy while shock, in the time that the speed of a motor vehicle of school bus changes, interior compartment mutually external compartment moves along automobile fore-and-aft direction, hydraulic oil in liquid storage cylinder one flows in liquid storage cylinder two by hydraulic pipe, under the effect of the interior recoil spring two of liquid storage cylinder two, hydraulic oil pressurized enters into liquid reserve tank from overflow weir one, by the overflow effect of overflow weir one, apparatus with shock absorbing, relax and impact, in the time that automobile occurs to clash into largely, energy-absorption box pressurized is as for mutually low the leaning on of piston rod of hydraulic actuating cylinder two, promote the piston rod of hydraulic actuating cylinder two, make liquid storage cylinder two pressurizeds, hydraulic oil in liquid storage cylinder two enters in liquid storage cylinder one, now, overflow weir one can not be alleviated the pressure in liquid storage cylinder two by fast speed, cause liquid storage cylinder one internal pressure suddenly to raise, promote the piston rod of hydraulic actuating cylinder one to the direction motion away from interior compartment, it is the interior compartment segment distance that moves to the front of automobile, can greatly relax impact, while avoiding school bus to be impacted, student in interior compartment is subject to force of inertia effect and meets accident.
Compared with prior art, the present invention has the following advantages:
1, in the time that the speed of a motor vehicle of school bus changes, interior compartment mutually external compartment moves along automobile fore-and-aft direction, hydraulic oil in liquid storage cylinder one flows in liquid storage cylinder two by hydraulic pipe, under the effect of the interior recoil spring two of liquid storage cylinder two, hydraulic oil pressurized enters into liquid reserve tank from overflow weir one, by the overflow effect of overflow weir one, apparatus with shock absorbing, relax and impact, in the time that automobile occurs to clash into largely, energy-absorption box pressurized is as for mutually low the leaning on of piston rod of hydraulic actuating cylinder two, promote the piston rod of hydraulic actuating cylinder two, make liquid storage cylinder two pressurizeds, hydraulic oil in liquid storage cylinder two enters in liquid storage cylinder one, now, overflow weir one can not be alleviated the pressure in liquid storage cylinder two by fast speed, cause liquid storage cylinder one internal pressure suddenly to raise, promote the piston rod of hydraulic actuating cylinder one to the direction motion away from interior compartment, it is the interior compartment segment distance that moves to the front of automobile, can greatly relax impact, while avoiding school bus to be impacted, student in interior compartment is subject to force of inertia effect and meets accident.
2,, when automobile occurs to clash into, energy-absorption box moves to the direction near outer compartment at the directional tagging of guide pillar, promotes the piston rod of hydraulic actuating cylinder three, pressure in liquid storage cylinder three is raise suddenly, hydraulic oil, from overflow weir two overflows to liquid reserve tank, by overflow effect, absorbs the energy while shock.
Brief description of the drawings
Fig. 1 is the perspective view of this school bus.
Fig. 2 is the perspective view under another visual angle of this school bus.
Fig. 3 is the cutaway view of this school bus.
Fig. 4 is the enlarged drawing of local A in Fig. 3.
Fig. 5 is the principle schematic of hydraulic efficiency pressure system in this school bus.
Fig. 6 is the enlarged drawing of local B in Fig. 5.
Fig. 7 is the enlarged drawing of Local C in Fig. 5.
Fig. 8 is the cutaway view of supporting construction in this school bus.
In figure, 11, outer compartment; 12, interior compartment; 13, base plate; 14, guide pillar; 2, energy-absorption box; 31, pillar stiffener; 32, slide plate; 33, chute; 34, groove one; 35, groove two; 36, ball; 41, hydraulic actuating cylinder one; 42, liquid storage cylinder one; 43, hydraulic actuating cylinder two; 44, stay bearing plate; 45, liquid storage cylinder two; 46, liquid reserve tank; 51, casing; 52, air extractor vent one; 53, case lid; 54, flange; 55, air extractor vent two; 56, overflow weir one; 57, retracing spring one; 58, retracing spring two; 6, reed; 71, hydraulic actuating cylinder three; 72, retracing spring three; 73, liquid storage cylinder three; 74, overflow weir two; 81, car door two; 82, car door three.
Detailed description of the invention
Be below specific embodiments of the invention by reference to the accompanying drawings, technical scheme of the present invention is further described, but the present invention be not limited to these embodiment.
As shown in figures 1 and 3, school bus comprises an outer compartment 11 and an interior compartment 12, between outer compartment 11 and interior compartment 12, there is gap, outer compartment 11 has a base plate 13, the bottom of interior compartment 12 is by a supporting construction and base plate 13 sliding block joints, between interior compartment 12 and outer compartment 11, be also provided with first buffer structure that can relax at interior compartment 12 impulsive force that interior compartment 12 is subject to when externally compartment 11 moves mutually, the front end in outer compartment 11 is provided with an energy-absorption box 2, in energy-absorption box 2, be provided with the second buffer structure, between energy-absorption box 2 and outer compartment 11, be connected by some guide pillars 14, energy-absorption box 2 can move in external compartment 11 mutually with guide pillar 14, between energy-absorption box 2 and outer compartment 11, there is gap, between energy-absorption box 2 and outer compartment 11, be provided with the 3rd buffer structure.
This school bus adopts the structure in interior compartment 12 and outer compartment 11, interior compartment 12 can be mutually externally compartment 11 advance or the direction that retreats is moved along automobile, in the time that the speed of a motor vehicle of school bus changes, kinetic energy when the first buffer structure relaxes relative motion between interior compartment 12 and outer compartment 11, in the time that automobile occurs to clash into, first the second buffer structure in energy-absorption box 2 has an effect, energy when absorption portion is clashed into, be arranged on the further absorbing impact energy of the 3rd buffer structure between outer compartment 11 and energy-absorption box 2, injury to interior compartment 12 interior students can reduce to greatest extent school bus generation shock time, improve the safety of school bus.
As shown in Fig. 3 and Fig. 8, supporting construction comprises the some pillar stiffeners 31 that are fixedly installed on base plate 13, the upper end of pillar stiffener 31 is fixedly installed slide plate 32, the bottom of interior compartment 12 offers and pillar stiffener 31 chute 33 one to one, chute 33 distributes along automobile fore-and-aft direction, slide plate 32 is plugged in chute 33, the both ends of the surface up and down of slide plate 32 all start fluted 1, on chute 33, offer the groove corresponding with groove 12 35, between groove 1 and groove 2 35, be provided with ball 36, on the base plate 13 in outer compartment 11, be fixedly installed pillar stiffener 31, the upper end of pillar stiffener 31 is fixedly installed slide plate 32, between slide plate 32 and interior compartment 12, groove 1 is set, groove 2 35 and ball 36, 2 35 pairs of balls of groove 1 and groove 36 carry out spacing, ensure simultaneously slide plate 32 relatively interior compartment 12 move, thereby make interior compartment 12 can be mutually in the time that the vehicle body of school bus changes externally compartment 11 move, relax and impact.
As Fig. 3, shown in Fig. 4 and Fig. 5, the first buffer structure comprises several hydraulic actuating cylinders 1, the piston rod of hydraulic actuating cylinder 1 is fixedly connected with the front side of interior compartment 12, the cylinder body of hydraulic actuating cylinder is fixedly connected with outer compartment 11, hydraulic actuating cylinder has liquid storage cylinder 1, the first buffer structure also comprises and hydraulic actuating cylinder 1 hydraulic actuating cylinder 2 43 one to one, the piston rod of hydraulic actuating cylinder 2 43 is plugged on outer compartment 11, on outer compartment 11, be fixedly installed a stay bearing plate 44, the cylinder body of hydraulic actuating cylinder 2 43 is fixedly installed on stay bearing plate 44, between the outer end of the piston rod of hydraulic actuating cylinder 2 43 and energy-absorption box 2, there is gap, hydraulic actuating cylinder 2 43 has liquid storage cylinder 2 45, between liquid storage cylinder 1 and liquid storage cylinder 2 45, communicate by hydraulic pipe, on outer compartment 11, be fixedly installed a liquid reserve tank 46, on hydraulic actuating cylinder 2 43, be provided with overflow weir 1, overflow weir one 56 places are connected with the hydraulic pipe that liquid storage cylinder 2 45 is communicated with liquid reserve tank 46, between interior compartment 12 and outer compartment 11, be provided with some retracing springs 1, in liquid storage cylinder 2 45, be provided with retracing spring 2 58, in the time that the speed of a motor vehicle of school bus changes, interior compartment 12 mutually external compartment 11 moves along automobile fore-and-aft direction, hydraulic oil in liquid storage cylinder 1 flows in liquid storage cylinder 2 45 by hydraulic pipe, under the effect of the interior recoil spring two of liquid storage cylinder 2 45, hydraulic oil pressurized enters into liquid reserve tank 46 from overflow weir 1, by the overflow effect of overflow weir 1, apparatus with shock absorbing, relax and impact, in the time that automobile occurs to clash into largely, energy-absorption box 2 pressurizeds are as for mutually low the leaning on of piston rod of hydraulic actuating cylinder 2 43, promote the piston rod of hydraulic actuating cylinder 2 43, make liquid storage cylinder 2 45 pressurizeds, hydraulic oil in liquid storage cylinder 2 45 enters in liquid storage cylinder 1, now, overflow weir 1 can not be alleviated the pressure in liquid storage cylinder 2 45 by fast speed, cause liquid storage cylinder one 42 internal pressures suddenly to raise, promote the piston rod of hydraulic actuating cylinder 1 to the direction motion away from interior compartment 12, it is interior compartment 12 segment distance that moves to the front of automobile, can greatly relax impact, while avoiding school bus to be impacted, student in interior compartment 12 is subject to force of inertia effect and meets accident.
As shown in Figure 3 and Figure 4, energy-absorption box 2 is hollow structure, the second buffer structure comprises some the reeds 6 that are fixed in energy-absorption box 2, the two ends of reed 6 are fixedly connected with the inwall of energy-absorption box 2, and the dead ahead projection in outside compartment 11, the middle part of reed 6, energy-absorption box 2 is school bus first energy-absorbing buffering structures while being subject to clashing into, while being impacted, there is deformation in energy-absorption box 2, cause the front side extruding reed 6 of energy-absorption box 2, make reed 6 pressurizeds, the middle part of reed 6, can absorption portion Impact energy to the front projection of automobile.
As Fig. 3, shown in Fig. 5 and Fig. 6, the 3rd buffer structure comprises several hydraulic actuating cylinders 3 71, the cylinder body of hydraulic actuating cylinder 3 71 is fixed on stay bearing plate 44, the piston rod of hydraulic actuating cylinder 3 71 is plugged on outer compartment 11 and the outer end of piston rod is fixedly connected with energy-absorption box 2, between the cylinder body of hydraulic actuating cylinder 3 71 and stay bearing plate 44, be provided with retracing spring 3 72, hydraulic actuating cylinder 3 71 has liquid storage cylinder 3 73, on the cylinder body of hydraulic actuating cylinder 3 71, offer overflow weir 2 74, overflow weir 2 74 places are connected with the hydraulic pipe that liquid storage cylinder 3 73 is communicated with liquid reserve tank 46, when automobile occurs to clash into, energy-absorption box 2 moves to the direction near outer compartment 11 at the directional tagging of guide pillar 14, promote the piston rod of hydraulic actuating cylinder 3 71, pressure in liquid storage cylinder 3 73 is raise suddenly, hydraulic oil is from overflow weir 2 74 overflows to liquid reserve tank 46, by overflow effect, absorb the energy while shock.
As shown in Fig. 5 and Fig. 7, liquid reserve tank 46 comprises an airtight casing 51, the upper end of casing 51 offers some air extractor vents 1, the upper end of casing 51 is also arranged with case lid 53, case lid 53 has a flange 54, on flange 54, offer air extractor vent 2 55, between the upper surface of the axis of air extractor vent 2 55 and case lid 53, be 60 ° of angles, in order to eliminate the hydraulic oil volume-variation that the causes impact on liquid reserve tank 46 internal pressures of expanding with heat and contract with cold, offer some air extractor vents 1 in the upper end of airtight casing 51, on this casing 51, be also arranged with a case lid 53, case lid 53 has flange 54, on flange 54, offer some air extractor vents 2 55, between the upper surface of the axis of this air extractor vent 2 55 and case lid 53, be 60 ° of angles, , air extractor vent 2 55 is towards the below in the outside of casing 51, can avoid dust and other impurities to enter in liquid reserve tank 46, keep the clean of hydraulic oil.
As Fig. 1, shown in Fig. 2 and Fig. 3, on interior compartment 12, offer car door one, on outer compartment 11, offer the car door corresponding with car door one 2 81, on interior compartment 12, on the doorframe corresponding with car door one and outer compartment 11 and between doorframe corresponding to car door 2 81, be connected by sheet rubber, student gets on or off the bus and adopts special car door one and car door 2 81, between this car door one and car door 2 81, be connected by soft sheet rubber, eliminate the gap between the doorframe that the doorframe of car door one correspondence and car door 2 81 are corresponding, vehicle window on interior compartment 12 and outer compartment 11 also can adopt same way to eliminate gap between the two, between interior compartment 12 and outer compartment 11, there is driving compartment, on outer compartment 11, be provided with the car door 3 82 being communicated with between the external world and driving compartment, interior compartment 12 has the motion of certain amplitude eliminating in operational process mutually external compartment 11, in order not affect the operation of chaufeur, driving compartment is arranged between interior compartment 12 and outer compartment 11.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendments or supplement or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.

Claims (1)

1. the hydraulic efficiency pressure system on a school bus, it is characterized in that, school bus comprises an outer compartment (11) and an interior compartment (12), between described outer compartment (11) and interior compartment (12), there is gap, described outer compartment (11) has a base plate (13), the bottom of described interior compartment (12) is by a supporting construction and described base plate (13) sliding block joint, the front end in described outer compartment (11) is provided with an energy-absorption box (2), between described energy-absorption box (2) and outer compartment (11), be connected by some guide pillars (14), described energy-absorption box (2) can move in external compartment (11) mutually with described guide pillar (14), between described energy-absorption box (2) and outer compartment (11), there is gap, described hydraulic efficiency pressure system comprises several hydraulic actuating cylinders one (41), the piston rod of described hydraulic actuating cylinder one (41) is fixedly connected with the front side of interior compartment (12), the cylinder body of described hydraulic actuating cylinder is fixedly connected with described outer compartment (11), described hydraulic actuating cylinder has liquid storage cylinder one (42), described hydraulic efficiency pressure system also comprises and hydraulic actuating cylinder one (41) hydraulic actuating cylinder two (43) one to one, the piston rod of described hydraulic actuating cylinder two (43) is plugged on described outer compartment (11), on described outer compartment (11), be fixedly installed a stay bearing plate (44), the cylinder body of described hydraulic actuating cylinder two (43) is fixedly installed on described stay bearing plate (44), between the outer end of the piston rod of described hydraulic actuating cylinder two (43) and energy-absorption box (2), there is gap, described hydraulic actuating cylinder two (43) has liquid storage cylinder two (45), between described liquid storage cylinder one (42) and liquid storage cylinder two (45), communicate by hydraulic pipe, on described outer compartment (11), be fixedly installed a liquid reserve tank (46), on described hydraulic actuating cylinder two (43), be provided with overflow weir one (56), described overflow weir one (56) locates to be connected with the hydraulic pipe that liquid storage cylinder two (45) is communicated with liquid reserve tank (46), between described interior compartment (12) and outer compartment (11), be provided with some retracing springs one (57), in described liquid storage cylinder two (45), be provided with retracing spring two (58), described hydraulic efficiency pressure system also comprises several hydraulic actuating cylinders three (71), the cylinder body of described hydraulic actuating cylinder three (71) is fixed on described stay bearing plate (44), the piston rod of described hydraulic actuating cylinder three (71) is plugged in outer end upper and piston rod, described outer compartment (11) and is fixedly connected with energy-absorption box (2), between the cylinder body of described hydraulic actuating cylinder three (71) and stay bearing plate (44), be provided with retracing spring three (72), described hydraulic actuating cylinder three (71) has liquid storage cylinder three (73), on the cylinder body of described hydraulic actuating cylinder three (71), offer overflow weir two (74), described overflow weir two (74) locates to be connected with the hydraulic pipe that liquid storage cylinder three (73) is communicated with liquid reserve tank (46).
CN201410110034.6A 2014-03-24 2014-03-24 A kind of hydraulic system on school bus Active CN103909980B (en)

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CN103909980B CN103909980B (en) 2016-08-17

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105109432A (en) * 2015-08-10 2015-12-02 南京工程学院 Multi-stage energy absorbing bumper provided with multiple hydraulic cylinders and used for automobile

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6554348B1 (en) * 2002-06-04 2003-04-29 Dan H. Gernstein Bus body
CN101125539A (en) * 2006-08-14 2008-02-20 李正才 Hydraulic buffering device when automobile being bounced
CN201559608U (en) * 2009-11-06 2010-08-25 段练 Anticollision bumper system for automobile
CN202827799U (en) * 2012-05-29 2013-03-27 陈学生 Passenger cars for eliminating brakes impact
CN203844701U (en) * 2014-03-24 2014-09-24 徐菁翊 Hydraulic system of school bus

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6554348B1 (en) * 2002-06-04 2003-04-29 Dan H. Gernstein Bus body
CN101125539A (en) * 2006-08-14 2008-02-20 李正才 Hydraulic buffering device when automobile being bounced
CN201559608U (en) * 2009-11-06 2010-08-25 段练 Anticollision bumper system for automobile
CN202827799U (en) * 2012-05-29 2013-03-27 陈学生 Passenger cars for eliminating brakes impact
CN203844701U (en) * 2014-03-24 2014-09-24 徐菁翊 Hydraulic system of school bus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105109432A (en) * 2015-08-10 2015-12-02 南京工程学院 Multi-stage energy absorbing bumper provided with multiple hydraulic cylinders and used for automobile

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