CN208686867U - A kind of heavy automobile cab damper - Google Patents

Abstract

The utility model provides a kind of heavy automobile cab damper, including the internal trapped fuel cylinder barrel for being equipped with operation cylinder barrel, oil liquid is underfilled in trapped fuel cylinder barrel, the lower end of trapped fuel cylinder barrel and operation cylinder barrel is connected with pedestal, the upper end of operation cylinder barrel, which is provided with, guides seat into, the outside for guiding seat into is equipped with oil sealing, oil sealing outer cup is equipped with dust cover, the built-in full oil liquid of operation cylinder barrel, the piston that operation cylinder barrel is divided into upper and lower two chambers is equipped in operation cylinder barrel in the middle part of barrel, the piston rod that dust cover is stretched out on top is fixedly connected on piston, the extension valve and unimpeded valve that valve port is respectively communicated with upper and lower chambers are installed on piston, support base is equipped with close to barrel bottom in operation cylinder barrel, the shrinking valve and make up valve that valve port is connected to lower chambers and trapped fuel cylinder barrel respectively are installed on support base, the rigidity of extension valve is greater than the rigidity of shrinking valve.The application can achieve the effect that rapid vibration damping, effectively increase the riding comfort of heavy-duty car driver, alleviate the fatigue strength of driver.

Description

A kind of heavy automobile cab damper

Technical field

The utility model relates to absorber technical fields, and in particular to a kind of heavy automobile cab damper.

Background technique

Damper is mainly used to inhibit concussion when rebounding after spring shock-absorbing and impact from road surface.By not level road When face, although shock-absorbing spring can filter the vibration on road surface, spring itself also has a reciprocating motion, and damper be exactly for Inhibit this spring jump.Damper is too soft, vehicle body will vertical bounce, damper can bring about very much too big resistance firmly, Spring is interfered to work normally.In the retrofit process about suspension, hard damper will mutually arrange in pairs or groups with hard spring, and bullet The hardness of spring is again closely bound up with car weight, therefore heavier vehicle generally uses harder damper.

Resistance of shock absorber is small, and the inhibiting effect moved back and forth to helical spring is small, spring and the impact of damper road pavement Absorbing can be more preferable, and driving can show more comfortable；And resistance of shock absorber it is big when, spring is moved back and forth by biggish inhibition, The filtering of shock-absorbing road pavement impact is smaller, such as cooperates harder spring, shows as more preferable to the supportive of vehicle body, is more suitable sharp Strong posture, but be certain to sacrifice comfort.

The utility model inventor has found that with heavy-duty car technology continuous upgrading, how to improve weight The riding comfort of type driver and the fatigue strength for mitigating driver have become an important factor for designer considers, because And in order to meet the market requirement and open up more markets, it needs to develop heavy automobile cab vibration damper complement.

Utility model content

For the riding comfort of the existing technology for how improving heavy-duty car driver and mitigate the tired of driver The technical issues of labor intensity, the utility model provide a kind of heavy automobile cab damper.

In order to solve the above-mentioned technical problem, the utility model uses the following technical solution:

The inside of a kind of heavy automobile cab damper, including trapped fuel cylinder barrel, the trapped fuel cylinder barrel is equipped with operation cylinder barrel, It is underfilled with oil liquid in the cylinder of the trapped fuel cylinder barrel, the lower end of the trapped fuel cylinder barrel and operation cylinder barrel is connected with pedestal, the operation The upper end of cylinder barrel, which is provided with, guides seat into, and the outside for guiding seat into is equipped with the oil sealing connecting with trapped fuel cylinder barrel top, the oil sealing Outer cup is equipped with the dust cover connecting with trapped fuel cylinder barrel side, fills oil liquid, the operation cylinder barrel in the cylinder of the operation cylinder barrel Piston is equipped in the middle part of interior close barrel, which is divided into two chambers up and down, fixed company on the piston for the operation cylinder barrel Be connected to the piston rod that dust cover is stretched out on top, be installed on the piston relative configuration extension valve and unimpeded valve, the extension The both ends valve port of the valve and unimpeded valve chamber with two sides above and below piston respectively is set close to barrel bottom in the operation cylinder barrel There is support base, the shrinking valve of relative configuration is installed on the support base and makes up valve, the shrinking valve and the both ends for making up valve Valve port is connected to lower chambers and trapped fuel cylinder barrel respectively, and the rigidity of the extension valve is greater than the rigidity of shrinking valve, and the extension valve, Unimpeded valve, shrinking valve and to make up valve be one-way throttle valve.

Compared with prior art, heavy automobile cab damper provided by the utility model, it is close in operation cylinder barrel The medium position of barrel is equipped with piston, is installed with extension valve and unimpeded valve on piston, close to the bottom of barrel in operation cylinder barrel Position is equipped with support base, and shrinking valve is installed on support base and makes up valve, and the rigidity of extension valve is much larger than the rigidity of shrinking valve, because And under the effect of same pressure, the channel cross-sectional area summation in extension valve and corresponding normal open gap is less than shrinking valve and corresponding normal open stitches The channel cross-sectional area summation of gap, this damping force that extension stroke of damper is generated are greater than the damping force of compression travel, i.e., Damping force when shock absorbers compression is little, and damping force when stretching is much larger, thus can eliminate it when suspension bounces Continue the trend bounced repeatedly, achieve the effect that rapid vibration damping, thus effectively increases the ride comfort of heavy-duty car driver Property, alleviate the fatigue strength of driver.

Further, the rigidity of the extension valve is 20~35 times of the rigidity of shrinking valve.

Further, the trapped fuel cylinder barrel connects pedestal using hydraulic welding with the lower end of operation cylinder barrel.

Further, the lower end of the piston rod is offered close with connecting column on the piston integrally formed with connecting column The through-hole of cooperation, the connecting column pass through through-hole and are spirally connected fastening nut in connection column end.

Further, the damper further includes the upper lift ring welded with the upper end of piston rod and dust cover, and with it is described The lower lift ring of pedestal welding.

Detailed description of the invention

Fig. 1 is heavy automobile cab damper structure schematic diagram provided by the utility model.

In figure, 1, trapped fuel cylinder barrel；2, operation cylinder barrel；3, pedestal；4, seat is guided into；5, oil sealing；6, dust cover；7, piston；8, Piston rod；81, connecting column；9, extension valve；10, unimpeded valve；11, support base；12, shrinking valve；13, valve is made up；14, spiral shell is fastened It is female；15, upper lift ring；16, lower lift ring.

Specific embodiment

In order to be easy to understand the technical means, creative features, achievement of purpose, and effectiveness of the utility model, under Face combines and is specifically illustrating, and the utility model is further described.

In the description of the present invention, it should be understood that term " longitudinal direction ", " radial direction ", " length ", " width ", " thickness The side of the instructions such as degree ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" Position or positional relationship are to be based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description the utility model and simplification is retouched It states, rather than the device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation, Therefore it should not be understood as limiting the present invention.In the description of the present invention, unless otherwise indicated, " multiple " contain Justice is two or more.

In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary, It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition The concrete meaning of language in the present invention.

It please refers to shown in Fig. 1, the utility model provides a kind of heavy automobile cab damper, including trapped fuel cylinder barrel 1, institute The inside for stating trapped fuel cylinder barrel 1 is equipped with operation cylinder barrel 2, is underfilled with oil liquid, 1 He of trapped fuel cylinder barrel in the cylinder of the trapped fuel cylinder barrel 1 The lower end of operation cylinder barrel 2 is connected with pedestal 3, and the upper end of the operation cylinder barrel 2, which is provided with, guides seat 4 into, the outside for guiding seat 4 into Equipped with the oil sealing 5 connecting with 1 top of trapped fuel cylinder barrel, 5 outer cup of oil sealing is equipped with the dust cover connecting with 1 side of trapped fuel cylinder barrel 6, oil liquid is filled in the cylinder of the operation cylinder barrel 2, is equipped with piston 7 in the operation cylinder barrel 2 in the middle part of barrel, which will The operation cylinder barrel 2 divides for upper and lower two chambers, and the piston rod 8 that dust cover 6 is stretched out on top is fixedly connected on the piston 7, The extension valve 9 and unimpeded valve 10 of relative configuration, the both ends valve port of the extension valve 9 and unimpeded valve 10 are installed on the piston 7 Respectively with the chamber of about 7 two sides of piston, support base 11, the branch are equipped with close to barrel bottom in the operation cylinder barrel 2 The shrinking valve 12 of relative configuration is installed on support seat 11 and makes up valve 13, the shrinking valve 12 and the both ends valve port point for making up valve 13 It not being connected to lower chambers and trapped fuel cylinder barrel 1, the rigidity of the extension valve 9 is greater than the rigidity of shrinking valve 12, and the extension valve 9, Unimpeded valve 10, shrinking valve 12 and to make up valve 13 be one-way throttle valve.As techniques known, the rigidity of throttle valve is fixed Justice is one timing of throttle valve opening area, the variation of pressure difference and the ratio for the flow volume change values for flowing through valve before and after throttle valve.

Compared with prior art, heavy automobile cab damper provided by the utility model, it is close in operation cylinder barrel The medium position of barrel is equipped with piston, is installed with extension valve and unimpeded valve on piston, close to the bottom of barrel in operation cylinder barrel Position is equipped with support base, and shrinking valve is installed on support base and makes up valve, and the rigidity of extension valve is much larger than the rigidity of shrinking valve, because And under the effect of same pressure, the channel cross-sectional area summation in extension valve and corresponding normal open gap is less than shrinking valve and corresponding normal open stitches The channel cross-sectional area summation of gap, this make damper extension stroke (at this time extension valve and make up valve open and unimpeded valve and receipts Contracting valve is closed) damping force that generates be greater than compression travel (at this time unimpeded valve and shrinking valve open and extension valve and make up valve closing) Damping force, i.e. shock absorbers compression when damping force it is little, and damping force when stretching is much larger, thus can be in suspension bullet It is eliminated when rising and continues the trend bounced repeatedly, achievees the effect that rapid vibration damping, thus effectively increases heavy-duty car driver Riding comfort, alleviate the fatigue strength of driver.

As specific embodiment, the rigidity of the extension valve 9 is 20~35 times of the rigidity of shrinking valve 12, it is possible thereby to make The damping force for obtaining the extension stroke generation of damper is much larger than the damping force of compression travel, reaches the technical effect of rapid vibration damping.

As specific embodiment, the trapped fuel cylinder barrel 1 connects pedestal 3 using hydraulic welding with the lower end of operation cylinder barrel 2, i.e., The seam weld of pedestal 3 is welded by the way of hydraulic pressurization, and the mode of hydraulic pressurization can guarantee the ruler after the welding of pedestal 3 Very little consistency, it is possible thereby to generate noise in inside after avoiding damper from assembling.

As specific embodiment, the lower end of the piston rod 8 is offered on the piston 7 integrally formed with connecting column 81 With the close-fitting through-hole of connecting column 81, the connecting column 81 passes through through-hole and is spirally connected fastening nut 14 in 81 end of connecting column, It is spirally connected fastening nut 14, is thereby enhanced between piston rod 8 and piston 7 in 81 end of connecting column for stretching out 7 bottom surface of piston Be fixedly connected with intensity.By the way that the piston rod 8 to be connected firmly on piston 7, damper can be improved in the process of running Comfort.

As specific embodiment, the damper further include welded with the upper end of piston rod 8 and the top of dust cover 6 it is upper Hanging ring 15, and the lower lift ring 16 with the bottom welding of the pedestal 3, can fix damper from there through the upper lift ring 15 It is connected on vehicle body, and damper can be connected with vehicle bridge by the lower lift ring 16, effectively improve the connection of damper Scalability.

Heavy automobile cab damper provided by the present application in order to better understand below will carry out its working principle Illustrate: in compression travel, automotive wheel shifts near vehicle body, and damper is compressed, and damper inner piston 7 moves down at this time, makes Lower chambers volume reducing, oil pressure increases, and oil liquid flows through the upper chamber that 7 upper surface of piston is flowed to after unimpeded valve 10, due to upper Chamber has accounted for a part of space by piston rod 8, thus the increased volume of upper chamber is less than the volume that lower chambers reduce, a part Oil liquid is then just pushed shrinking valve 12 open and is flowed back in trapped fuel cylinder barrel 1, and unimpeded valve and shrinking valve form suspension to the throttling of oil liquid and be pressurized Contract the damping force moved.In extension stroke, wheel is equivalent to far from vehicle body, damper Tensile, at this moment the piston 7 of damper It moves up, so that the volume reducing of upper chamber, oil pressure is increased, and unimpeded valve 10 is closed, and the indoor oil liquid of epicoele pushes extension valve 9 open Lower chambers are flowed into, due to the presence of upper chamber's inner piston rod 8, the oil liquid come from upper chamber's stream is not enough to increased full of lower chambers Volume, promote bottom chamber generate certain vacuum degree, at this moment the oil liquid in trapped fuel cylinder barrel 1 push open make up valve 13 flow into lower chambers come It is supplemented, extension valve and the throttling action for making up valve play damping action to when being suspended in stretching exercise.

Finally, it is stated that above embodiments are merely intended for describing the technical solutions of the present application, but not for limiting the present application, although ginseng The utility model is described in detail according to preferred embodiment, those skilled in the art should understand that, it can be to this The technical solution of utility model is modified or replaced equivalently, without departing from the objective and model of technical solutions of the utility model It encloses, should all cover in the scope of the claims of the utility model.

Claims (4)

1. a kind of heavy automobile cab damper, which is characterized in that including trapped fuel cylinder barrel, the inside of the trapped fuel cylinder barrel is equipped with Operation cylinder barrel, is underfilled with oil liquid in the cylinder of the trapped fuel cylinder barrel, and the lower end of the trapped fuel cylinder barrel and operation cylinder barrel is connected with pedestal, The upper end of the operation cylinder barrel, which is provided with, guides seat into, and the outside for guiding seat into is equipped with the oil sealing connecting with trapped fuel cylinder barrel top, The oil sealing outer cup is equipped with the dust cover connecting with trapped fuel cylinder barrel side, fills oil liquid in the cylinder of the operation cylinder barrel, described Piston is equipped in operation cylinder barrel in the middle part of barrel, which is divided into two chambers up and down, the piston for the operation cylinder barrel On be fixedly connected with the piston rod that dust cover is stretched out on top, be installed on the piston relative configuration extension valve and unimpeded valve, The both ends valve port of the extension valve and unimpeded valve chamber with two sides above and below piston respectively, close to cylinder in the operation cylinder barrel Wall bottom is equipped with support base, and the shrinking valve of relative configuration is installed on the support base and makes up valve, the shrinking valve and makes up The both ends valve port of valve is connected to lower chambers and trapped fuel cylinder barrel respectively, and the rigidity of the extension valve is greater than the rigidity of shrinking valve, and institute The rigidity for stating extension valve is 20~35 times of rigidity of shrinking valve, the extension valve, unimpeded valve, shrinking valve and to make up valve be list To throttle valve.

2. heavy automobile cab damper according to claim 1, which is characterized in that the trapped fuel cylinder barrel and operating cylinder The lower end of cylinder connects pedestal using hydraulic welding.

3. heavy automobile cab damper according to claim 1, which is characterized in that the lower end one of the piston rod Connecting column is formed, is offered on the piston and is passed through through-hole with the close-fitting through-hole of connecting column, the connecting column and even Column end is connect to be spirally connected fastening nut.

4. heavy automobile cab damper according to claim 1, which is characterized in that the damper further includes and lives The upper lift ring of the upper end of stopper rod and dust cover welding, and the lower lift ring with pedestal welding.