CN203035835U - Rear suspension oil cylinder for heavy industrial vehicle - Google Patents
Rear suspension oil cylinder for heavy industrial vehicle Download PDFInfo
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- CN203035835U CN203035835U CN 201220644631 CN201220644631U CN203035835U CN 203035835 U CN203035835 U CN 203035835U CN 201220644631 CN201220644631 CN 201220644631 CN 201220644631 U CN201220644631 U CN 201220644631U CN 203035835 U CN203035835 U CN 203035835U
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- oil cylinder
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Abstract
The utility model discloses a rear suspension oil cylinder for a heavy industrial vehicle. The rear suspension oil cylinder is installed at the rear of a vehicle and used for supporting an upper frame and a lower frame. The rear suspension oil cylinder comprises a cylinder body, a guide sleeve which is arranged at the front end of the cylinder body, a piston rod and a piston, wherein the piston rod is matched with the guide sleeve in a sliding mode, and the piston is matched with the inner wall of the cylinder body in a sliding mode. The cylinder body is divided into a rod cavity and a rodless cavity of an oil cylinder by the piston, the piston is arranged at the tail end of the piston rod, the piston and the piston rod form an integrated structure, the piston rod is provided with an inner cavity which is communicated with the rodless cavity and closed at one end, an inflation valve which refuels and inflates the rodless cavity is arranged on the tail portion of the cylinder body, a damping hole and a steel ball are respectively arranged in the piston rod in a radial direction, the damping hole is communicated with the inner cavity and the rod cavity, and the steel ball ejects from the inner cavity to the rod cavity in a one-way mode. In the process of vehicle traveling, the vehicle conducts repeated up-down motion to be adapted to conditions of different road surfaces, and achieve vibration damping and support functions. The damping hole and the steel ball which ejects in the one-way mode can achieve alternating change of the size of damping force in the process, so that the aim of motion stability of the vehicle is ensured.
Description
Technical field
The utility model relates to technical field of hydraulic oil cylinder, especially a kind of rear suspension oil cylinder for heavy industrial car.
Background technique
Heavy industrial car useful load is big, usually under the relatively poor situation of road conditions condition, travel, therefore people wish that it has good cruising characteristic, buffering reliability and riding comfort, these indexs all natural vibration characteristic with vehicle body are relevant, and the natural vibration characteristic of vehicle body is decided by its suspension system.Traditional suspension system mostly is made up of vibration damper and helical spring or leaf spring, because the rigidity of spring is definite value, for meeting the demands, when the rigidity that needs suspension is softer, cause the space of suspension very big, spring-mass is big, can't adapt to the light-weighted development in heavy chassis, and can not take into account travelling comfort and the control stability on chassis simultaneously; Because the intensity of spring steel is limited, if carrying capacity increases, the volume of leaf spring and length are just inevitable so increases thereupon simultaneously.Along with development of technology, the oleo-pneumatic suspension system of vibration damper and support spring has appearred integrating, it is the gentle combination of oil, utilizes the incompressible realization of fluid to move and the transmission of power the various powerful controls of property easy to control realization that utilize fluid to flow comparatively accurately.The suspension oil cylinder is as the most important parts of hydro pneumatic suspension, determined the main performance of whole suspension system, especially the rear suspension oil cylinder is bearing bigger weight than front overhang oil cylinder, therefore require it to have more performance at non-linear rigidity, nonlinear dampling, vehicle body height free adjustment, unit energy storage than aspect such as big, elastic characteristic can realize the good control of motor racing posture easily preferably.
The model utility content
The technical problems to be solved in the utility model is: overcome the deficiency in the prior art, provide a kind of and have the excellent damping effect, satisfy and guarantee the vehicle used rear suspension oil cylinder of heavy industrial car stably that travels under the different road surface.
The technological scheme that its technical problem that solves the utility model adopts is: the used rear suspension oil cylinder of a kind of heavy industrial car, being installed on vehicle rear is used for supporting, following vehicle frame, comprise cylinder body, be located at the guide sleeve of cylinder body front end, piston rod and piston, piston rod and guide sleeve are slidingly matched, piston and inboard wall of cylinder block are slidingly matched, piston is divided into cylinder body rod chamber and the rodless cavity of oil cylinder, described piston is positioned at the piston rod tail end and is structure as a whole with piston rod, piston rod has and communicates with rodless cavity and the inner chamber of end sealing, the cylinder body afterbody is provided with to the gas charging valve of rodless cavity oiling inflation, and piston rod radially is respectively equipped with the damping hole of communication with cavity and rod chamber, the unidirectional steel ball that backs down from inner chamber to rod chamber.
Be provided with guide ring between described piston and the inboard wall of cylinder block, the wearing and tearing that cause to reduce direct friction between piston and the cylinder body.
The beneficial effects of the utility model are: the utility model is installed in heavy industrial car rear portion, the upper and lower vehicle frame of support vehicle, in the vehicle travel process, move up and down to adapt to the situation on different road surfaces repeatedly, realize the function of vibration damping and support, and damping hole and the unidirectional steel ball that backs down can be realized the checker of damping force size in this process, have reached the purpose that guarantees the vehicle movement stationarity.
Description of drawings
Below in conjunction with drawings and embodiments the utility model is further specified.
Fig. 1 is structural representation of the present utility model.
1. cylinder bodies, 2. guide sleeves, 3. piston rods, 4. pistons, 5. rod chambers, 6. rodless cavities, 7. inner chambers, 8. gas charging valves, 9. damping holes, 10. steel balls, 11. guide rings, 12. baffle plates among the figure
Embodiment
By reference to the accompanying drawings the utility model is further described now.The schematic representation that these accompanying drawings are simplification only illustrates basic structure of the present utility model in a schematic way, so it only shows the formation relevant with the utility model.
The used rear suspension oil cylinder of a kind of heavy industrial car as shown in Figure 1 is installed on vehicle rear and is used for supporting upper and lower vehicle frame.Comprise the cylinder body 1 of front opening, back-end closure, the guide sleeve 2 that is installed in cylinder body 1 front opening place, piston rod 3 and the piston 4 that is positioned at piston rod 3 rear ends and is structure as a whole with piston rod 3, wherein, cylinder body 1 is combined by bonnet and cylindrical shell welding, piston rod 3 is slidingly matched with guide sleeve 2 fluid-tights, piston 4 is slidingly matched with the cylinder inboard wall fluid-tight of cylinder body 1, simultaneously between the cylinder inboard wall of piston 4 and cylinder body 1, be provided with guide ring 11, the wearing and tearing that cause to reduce direct friction between piston 4 and the cylinder body 1.
Piston 4 is divided into cylinder body 1 rod chamber 5 and the rodless cavity 6 of oil cylinder, offer the inner chamber 7 that communicates with rodless cavity 6 at piston rod 4, inner chamber 7 is closed shape at piston rod 4 front ends, bonnet at cylinder body 1 is provided with gas charging valve 8, can be to rodless cavity 7 oiling inflations by gas charging valve 8, at the piston rod 3 at piston 4 places radially, be respectively equipped with the damping hole 9 of communication with cavity 7 and rod chamber 5, the 5 unidirectional steel balls that back down 10 from inner chamber 7 to rod chamber, the quantity of damping hole 9 can arrange one or more as requested, 10 of steel balls are installed in the macropore of a step hole on the piston rod 3, and steel ball 10 is positioned at aforementioned guide ring 11 inboards, is provided with baffle plate 12 between steel ball 10 and guide ring 11.
Have the connecting base that can be connected with upper and lower vehicle frame on the bonnet of piston rod 3 front ends, cylinder body 1 respectively, joint shaft bearing is installed in the connecting base, realize the hinged of oil cylinder and vehicle frame.
The utility model principle summary: after the oil cylinder making finishes, in rodless cavity 6, add a certain amount of hydraulic oil by gas charging valve 8 earlier, hydraulic oil enters in the inner chamber 7 simultaneously, pouring the inert gas (as N2) of certain pressure behind the oil cylinder board again in the rodless cavity 6 by gas charging valve 8, is the mixture that has been full of fluid and inert gas by a certain percentage in the oil cylinder at this moment.When in the vehicle running process, being subjected to the vibration of uneven road surface, piston 4 and piston rod 3 assemblies will be relative cylinder body 1 reciprocating.1, when the relative cylinder body 1 of piston rod 3 assemblies shrinks, be that the suspension oil cylinder is in compression stroke, then the fluid in the rodless cavity 6 is compressed, make gas pressure increase, the volume of rod chamber 5 increases simultaneously, pressure descends, at this moment the part fluid in the rodless cavity 6 is under the effect of gas pressure, enter rod chamber 5 through damping hole 9 and the steel ball 10 that backs down from rodless cavity 6, because steel ball 10 and damping hole 9 are on state simultaneously, the flow velocity of fluid is lower, and the damping force of generation is smaller, mainly relies on the gas in the rodless cavity 6 to be compressed the motion that the generation elastic reaction suppresses piston rod 3; 2, stretch out with respect to cylinder body 1 when piston rod 3 assemblies, be that oil cylinder is in the recovery stroke, then the fluid of rod chamber 5 by compression, the fluid that makes rod chamber 5 flows to rodless cavity 6 by damping hole 9, the steel ball 10 of this moment is compressed by fluid and is in closed condition, therefore produce bigger damping force and come rapid attenuation vibration, and oil pressure raises in the rod chamber 5, and the rigidity of restoring stroke is increased, and has increased damping function, delay resilience, thereby be conducive to improve the stationarity that vehicle travels.Therefore in the stroke of vehicle, because the incentive action on road surface, the suspension oil cylinder can move up and down to adapt to the different situations on road surface repeatedly, realizes the function of vibration damping and support.
The utility model is installed in heavy industrial car rear portion, the upper and lower vehicle frame of support vehicle, in the vehicle travel process, move up and down to adapt to the situation on different road surfaces repeatedly, realize the function of vibration damping and support, and damping hole 9 and the unidirectional steel ball that backs down 10 can be realized the checker of damping force size in this process, have reached the purpose that guarantees the vehicle movement stationarity.
Above-mentioned mode of execution only is explanation technical conceive of the present utility model and characteristics; its purpose is to allow the personage that is familiar with this technology can understand content of the present utility model and is implemented; can not limit protection domain of the present utility model with this; all equivalences of doing according to the utility model spirit essence change or modify, and all should be encompassed in the protection domain of the present utility model.
Claims (2)
1. used rear suspension oil cylinder of heavy industrial car, being installed on vehicle rear is used for supporting, following vehicle frame, comprise cylinder body (1), be located at the guide sleeve (2) of cylinder body (1) front end, piston rod (3) and piston (4), piston rod (3) is slidingly matched with guide sleeve (2), piston (4) is slidingly matched with cylinder body (1) inwall, piston (4) is divided into cylinder body (1) rod chamber (5) and the rodless cavity (6) of oil cylinder, it is characterized in that: described piston (4) is positioned at piston rod (3) tail end and is structure as a whole with piston rod (3), piston rod (3) has and communicates with rodless cavity (6) and the inner chamber (7) of end sealing, cylinder body (1) afterbody is provided with to the gas charging valve (8) of rodless cavity (6) oiling inflation, and piston rod (3) radially is respectively equipped with the damping hole (9) of communication with cavity (7) and rod chamber (5), from inner chamber (7) to the unidirectional steel ball that backs down of rod chamber (5) (10).
2. the used rear suspension oil cylinder of heavy industrial car according to claim 1 is characterized in that: be provided with guide ring (11) between described piston (4) and cylinder body (1) inwall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220644631 CN203035835U (en) | 2012-11-29 | 2012-11-29 | Rear suspension oil cylinder for heavy industrial vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220644631 CN203035835U (en) | 2012-11-29 | 2012-11-29 | Rear suspension oil cylinder for heavy industrial vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203035835U true CN203035835U (en) | 2013-07-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220644631 Expired - Lifetime CN203035835U (en) | 2012-11-29 | 2012-11-29 | Rear suspension oil cylinder for heavy industrial vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203035835U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102996696A (en) * | 2012-11-29 | 2013-03-27 | 江苏恒立高压油缸股份有限公司 | Rear suspension oil cylinder for heavy-duty industrial mining vehicle |
-
2012
- 2012-11-29 CN CN 201220644631 patent/CN203035835U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102996696A (en) * | 2012-11-29 | 2013-03-27 | 江苏恒立高压油缸股份有限公司 | Rear suspension oil cylinder for heavy-duty industrial mining vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 213167 Wujin high tech Industrial Development Zone, Jiangsu Province, No. long hidden Road, No. 99 Patentee after: JIANGSU HENGLI HYDRAULIC Co.,Ltd. Address before: 213167 Wujin high tech Industrial Development Zone, Jiangsu Province, No. long hidden Road, No. 99 Patentee before: Jiangsu Hengli Highpressure Oil Cylinder Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130703 |