CN201925392U

CN201925392U - Novel oil-gas shock absorber

Info

Publication number: CN201925392U
Application number: CN2010206460487U
Authority: CN
Inventors: 接桂利; 张为春
Original assignee: Shandong University of Technology
Current assignee: Shandong University of Technology
Priority date: 2010-12-03
Filing date: 2010-12-03
Publication date: 2011-08-10
Anticipated expiration: 2020-12-03

Abstract

The utility model relates to a novel oil-gas shock absorber suitable for a vehicle. The novel oil-gas shock absorber is characterized in that a piston rod and an oil storage cylinder tube are sealed in good condition and can make free and relative movement; four circulation valves are circumferentially arranged on the upper surface of a working cylinder tube; a baffle plate and the inner wall of the working cylinder tube are sealed in good condition and can make free and relative movement; unloading valves can be opened only under high pressure, and the reverse liquid is circulated smoothly; holes are formed on the bases of two unloading valves to be communicated with the working cylinder tube and the oil storage cylinder tube, thereby having the function of overload protection and protecting all parts from being damaged. The novel oil-gas shock absorber can be used for the vehicle, thereby enhancing the shock absorption effect.

Description

Novel air oil shock absorber

Technical field

The utility model relates to a kind of novel air oil shock absorber, belongs to the automobile absorber field.

Technical background

The effect of vibration damper is the decay of quickening vehicle frame and body vibrations, makes it return to plateau rapidly, and to improve the smoothness of automobile running, vibration damper and elastic element are installed in parallel.Vehicle shock absorber has hydraulic type, gas-filled type and resistance adjustable etc. several, and wherein hydraulic type is widely adopted.

The working principle of hydraulic shock absorber is: when vehicle frame and vehicle bridge were done relative movement, the piston in the vibration damper just moved up and down in cylinder barrel, so the fluid in the shock absorber casing just flows into another inner chamber from an inner chamber by some narrow holes repeatedly.Friction in friction between hole wall and fluid and the fluid molecule forms the damping force to vibration, makes the vibrational energy of vehicle body and vehicle frame be converted into heat energy, is absorbed by fluid and shock absorber casing, is dispersed in the atmosphere.The damping force size of vibration damper increases and decreases with the increase and decrease of the speed of related movement of vehicle frame and vehicle bridge, and relevant with the viscosity of fluid.At present, mostly vehicle shock absorber is hydraulic type, and damping force is big during the compression of hydraulic type vibration damper, can not make elastic element fully absorb vibrational energy, relaxes and impacts.There is defective in existing hydraulic type vibration damper, is further improved.

Summary of the invention

The purpose of this utility model is to address the above problem, and providing a kind of can the time fully absorb vibrational energy in compression, vibration damper that again can buffering vibration.Be achieved through the following technical solutions:

Novel air oil shock absorber, comprise piston rod, work cylinder barrel, oil storage cylinder barrel, spring, baffle plate, flowing valve and feather valve, piston rod can be done piston motion compresses gas in the work cylinder barrel, piston is good and can free relative movement with work cylinder barrel inner wall sealing, piston rod and work cylinder barrel good seal and can free relative movement, piston rod and oil storage cylinder barrel good seal and can free relative movement; Four all cloth of flowing valve are at work cylinder barrel upper surface; Described baffle plate is good and can free relative movement with work cylinder barrel inner wall sealing; Described feather valve under high pressure can be opened, and reversed liquid flow is clear and coherent smooth; Two feather valves are communicated with work cylinder barrel and oil storage cylinder barrel respectively; Described spring one end connects baffle plate, the other end connection work cylinder barrel cavity of resorption inwall.

The utility model advantage is:

Compression was gas when 1, piston rod moved downward, and compression degree is bigger, and the stroke of piston rod is also far away, can fully absorb vibrational energy.

2, when vibration hour, a piston rod pressurized gas.When vibration was big, the pressure that pressurized gas produces promoted baffle plate and moves downward, and then compressed liquid.So just having realized calms the anger earlier afterwards presses oily dual compression.

3, when the fluid pressure in the baffle plate compression work cylinder barrel cavity of resorption was excessive, high pressure oil will back down feather valve and flow in the oil storage cylinder barrel, has so just played the effect of overload protection.

Description of drawings

Fig. 1 is the schematic representation of novel air oil shock absorber described in the utility model.

Embodiment

The 1-piston rod; The 2-flowing valve; 3-oil storage cylinder barrel; The 4-baffle plate; The 5-spring; The 6-feather valve; The 7-cylinder barrel of working.

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

As shown in Figure 1, in work cylinder barrel 7, be full of high pressure nitrogen between piston rod 1 and the baffle plate 4, when vibration occurring, piston rod 1 moves downward pressurized gas, because the compressed capability of gas is better, can well absorb vibrational energy, changes into the interior energy of gas.Piston rod 1 moves down a segment distance, and work cylinder barrel 7 epicoeles form the certain vacuum degree, and the fluid that is positioned at oil storage cylinder barrel 3 just flows into work cylinder barrel 7 through flowing valve 2.When piston rod 1 gos up, the just fluid of compression work cylinder barrel 7 epicoeles, fluid flows back to oil storage cylinder barrel 3 again through flowing valve 2.But there is the throttling damping force during owing to fluid process flowing valve 2, piston rod 1 can not be gone up rapidly, so just played damping effect.

When piston rod 1 downward decrement was very big, baffle plate 4 will move downward, and work cylinder barrel 7 cavity of resorption volumes are reduced, and the fluid in it just flows to the oil storage cylinder barrel 3 from feather valve 6.After piston rod 1 gos up, stressed the reducing of baffle plate 4 upper surfaces, baffle plate is got back to original position under the effect of spring 5.

Claims

1. novel air oil shock absorber, comprise piston rod, work cylinder barrel, oil storage cylinder barrel, spring, baffle plate, flowing valve and feather valve, piston rod can be done piston motion compresses gas in the work cylinder barrel, piston is good and can free relative movement with work cylinder barrel inner wall sealing, piston rod and work cylinder barrel good seal and can free relative movement, piston rod and oil storage cylinder barrel good seal and can free relative movement is characterized in that: four flowing valve week cloth at work cylinder barrel upper surface; Described baffle plate is good and can free relative movement with work cylinder barrel inner wall sealing; Two feather valves are communicated with work cylinder barrel and oil storage cylinder barrel respectively; Described spring one end connects baffle plate, the other end connection work cylinder barrel cavity of resorption inwall.