CN207080441U - A kind of hydraulic loading device - Google Patents
A kind of hydraulic loading device Download PDFInfo
- Publication number
- CN207080441U CN207080441U CN201720912827.9U CN201720912827U CN207080441U CN 207080441 U CN207080441 U CN 207080441U CN 201720912827 U CN201720912827 U CN 201720912827U CN 207080441 U CN207080441 U CN 207080441U
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- China
- Prior art keywords
- piston
- piston rod
- loading device
- fixed core
- inner carrier
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Abstract
The utility model discloses a kind of hydraulic loading device, including hydraulic jack, piston rod is provided with hydraulic jack, piston rod is connected with piston, and its structural feature is, the cavity of tubular is provided with piston rod, back-up coat is provided with the cavity of tubular, described piston includes fixed core, outer piston is arranged with outside fixed core, be inserted with inner carrier in fixed core, inner carrier can radial direction stretch；The beneficial effects of the utility model are：It is reasonable in design, it is simple in construction, by increasing capacitance it is possible to increase the intensity of piston rod, to prevent piston rod stress flexural deformation, avoid piston because long term wear, and sealing can not be formed, so as to avoid oil leak, improve service life, reduce use cost.
Description
Technical field
The utility model belongs to field of hydraulic equipment, and in particular to be a kind of hydraulic loading device.
Background technology
The main composition part of hydraulic loading device is exactly hydraulic cylinder, and hydraulic cylinder is widely used in various hydraulic systems,
Fluid pressure is converted to mechanical movement by it, is an indispensable part in mechanical automation.Hydraulic cylinder once breaks down,
It can influence the safe operation of whole plant equipment, and showing for oil leak and the bending of piston rod stress generally occurs in existing hydraulic cylinder
As hydraulic cylinder inside oil leak mainly has two kinds：Hydraulic cylinder piston rod and piston inner hole, piston seal abrasion is excessive to cause oil leak,
The reason for oil leak is the deformation of seal senile abrasion, can not form sealing.
Utility model content
The technical problems to be solved in the utility model, which is to provide one kind, can prevent because piston is because for a long time after abrasion
And cause oil leak, prevent the hydraulic loading device of piston rods bend.
To achieve the above object, the technical solution adopted in the utility model is a kind of hydraulic loading device, including hydraulic oil
Cylinder, hydraulic jack is interior to be provided with piston rod, and piston rod is connected with piston, and its structural feature is that the cavity of tubular is provided with piston rod,
Back-up coat is provided with the cavity of tubular, described piston includes fixed core, is arranged with outer piston outside fixed core, plugged in fixed core
Have an inner carrier, inner carrier can radial direction stretch.
As further improvement of the utility model, outer piston is two, is respectively sleeved at the upper and lower ends of fixed core, outside
Piston is in U shape, and inner carrier sandwiched is fixed on centre by two outer pistons.
As further improvement of the utility model, fixed core is provided with the screwed hole of axial direction, and fixed core is twisted with piston rod
Connect.
As further improvement of the utility model, fixed core is provided with the opening being used for through inner carrier.
As further improvement of the utility model, limiting plate is connected with inner carrier, between limiting plate and piston rod
It is connected with retractor device.
As further improvement of the utility model, inner carrier is by several in the fan-shaped elastic rubber slab squeezed tight set
Into annular.
As further improvement of the utility model, back-up coat is alumina ceramic layer, and the both ends of alumina ceramic layer are set
There is sealing gasket.
As further improvement of the utility model, capping is connected with cavity, capping is connected by screw with cavity.
The beneficial effects of the utility model are：It is reasonable in design, it is simple in construction, by increasing capacitance it is possible to increase the intensity of piston rod, to prevent from living
Stopper rod stress flexural deformation, piston being avoided because long term wear, and can not forming sealing, so as to avoid oil leak, improving makes
With the life-span, use cost is reduced.
Brief description of the drawings
Fig. 1 is the utility model cross section structure schematic diagram；
Fig. 2 is fixed core main structure diagram of the present utility model；
Fig. 3 is fixed core overlooking the structure diagram of the present utility model；
Fig. 4 is inner carrier overlooking the structure diagram of the present utility model；
Fig. 5 is the conventional sense schematic diagram of elastic rubber slab of the present utility model；
Wherein, 1- hydraulic jacks, 2- piston rods, 3- back-up coats, 4- fixed cores, 5- outer pistons, 6- inner carriers, 7- openings,
8- elastic rubber slabs, 9- cappings, 10- limiting plates, 11- retractor devices.
Embodiment
Explanation is further explained to the utility model below in conjunction with the accompanying drawings, but does not limit protection model of the present utility model
In enclosing.
As shown in Figures 1 to 5, a kind of hydraulic loading device, including hydraulic jack 1, hydraulic jack 1 is interior to be provided with piston rod 2,
Piston rod 2 is connected with piston, and the cavity of tubular is provided with described piston rod 2, back-up coat 3 is provided with the cavity of tubular, described
Piston include fixed core 4, be arranged with outer piston 5 outside fixed core 4, inner carrier 6 be inserted with fixed core 4, inner carrier 6 being capable of footpath
Stretched to direction.
Described outer piston 5 is two, is respectively sleeved at the upper and lower ends of fixed core 4, and outer piston 5 is in U shape, two
The sandwiched of inner carrier 6 is fixed on centre by individual outer piston 5.
Described fixed core 4 is provided with the screwed hole of axial direction, fixed core 4 and the twist-on of piston rod 2.
Described fixed core 4 is provided with the opening 7 being used for through inner carrier 6.
Limiting plate 10 is connected with described inner carrier 6, retractor device is connected between limiting plate 10 and piston rod 2
11。
Described inner carrier 6 by it is several in the fan-shaped squeezed tights of elastic rubber slab 8 set into annular.
Described back-up coat 3 is alumina ceramic layer, and the both ends of alumina ceramic layer are provided with sealing gasket.
Capping 9 is connected with described cavity, capping 9 is connected by screw with cavity.
In the utility model by inner carrier 6 by it is several in the fan-shaped squeezed tights of elastic rubber slab 8 set into annular,
Outer piston 5 is two, is respectively sleeved at the upper and lower ends of fixed core 4, and outer piston 5 is in U shape, and two outer pistons 5 are by interior work
Fill in 6 sandwicheds and be fixed on centre, realize Double decker piston structure, and the ejection of inner carrier 6, this practicality are realized by retractor device 11
Retractor device 11 in new can be spring, or other elastic devices, after outer piston 5 is by long term wear,
It can gradually diminish, be U shape so as to cause outer piston 5, becoming rectangle, no longer there is constraint to inner carrier 6
Effect, now, the automatic spring of inner carrier 6, has filled up the effect that outer piston 5 should have.
It is obvious to a person skilled in the art that the utility model is not limited to the details of above-mentioned one exemplary embodiment, and
And in the case of without departing substantially from spirit or essential attributes of the present utility model, it can realize that this practicality is new in other specific forms
Type.Therefore, no matter from the point of view of which point, embodiment all should be regarded as exemplary, and is nonrestrictive, this practicality is new
The scope of type limits by appended claims rather than described above, it is intended that the equivalency fallen in claim is contained
All changes in justice and scope are included in the utility model, any reference in claim should not be considered as into limitation
Involved claim.
Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each embodiment is only wrapped
Containing an independent technical scheme, this narrating mode of specification is only that those skilled in the art should for clarity
Using specification as an entirety, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
It is appreciated that other embodiment.
Claims (8)
1. a kind of hydraulic loading device, including hydraulic jack, hydraulic jack is interior to be provided with piston rod, and piston rod is connected with piston, its
It is characterised by：The cavity of tubular is provided with described piston rod, back-up coat is provided with the cavity of tubular, described piston includes solid
Determine core, outer piston be arranged with outside fixed core, be inserted with inner carrier in fixed core, inner carrier can radial direction stretch.
A kind of 2. hydraulic loading device according to claim 1, it is characterised in that：Described outer piston is two, respectively
The upper and lower ends of fixed core are set in, outer piston is in U shape, and inner carrier sandwiched is fixed on centre by two outer pistons.
A kind of 3. hydraulic loading device according to claim 1, it is characterised in that：Described fixed core is provided with axial direction
Screwed hole, fixed core and piston rod twist-on.
A kind of 4. hydraulic loading device according to claim 3, it is characterised in that：Described fixed core, which is provided with, to be used to wear
Cross the opening of inner carrier.
A kind of 5. hydraulic loading device according to claim 1, it is characterised in that：The upper connection of described inner carrier is limited
Position plate, is connected with retractor device between limiting plate and piston rod.
A kind of 6. hydraulic loading device according to claim 1, it is characterised in that：Described inner carrier is by several in sector
The elastic rubber slab squeezed tight of setting is into annular.
A kind of 7. hydraulic loading device according to claim 1, it is characterised in that：Described back-up coat is aluminium oxide ceramics
Layer, the both ends of alumina ceramic layer are provided with sealing gasket.
A kind of 8. hydraulic loading device according to claim 1, it is characterised in that：Capping is connected with described cavity,
Capping is connected by screw with cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720912827.9U CN207080441U (en) | 2017-07-26 | 2017-07-26 | A kind of hydraulic loading device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720912827.9U CN207080441U (en) | 2017-07-26 | 2017-07-26 | A kind of hydraulic loading device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207080441U true CN207080441U (en) | 2018-03-09 |
Family
ID=61424217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720912827.9U Expired - Fee Related CN207080441U (en) | 2017-07-26 | 2017-07-26 | A kind of hydraulic loading device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207080441U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110541866A (en) * | 2019-09-03 | 2019-12-06 | 浙江欧感机械制造有限公司 | Oil cylinder for pile foundation self-balancing method and self-sealing piston thereof |
| CN116857257A (en) * | 2023-07-14 | 2023-10-10 | 佛山市禅城区余怡机械科技有限公司 | Hydraulic cylinder sealing device |
-
2017
- 2017-07-26 CN CN201720912827.9U patent/CN207080441U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110541866A (en) * | 2019-09-03 | 2019-12-06 | 浙江欧感机械制造有限公司 | Oil cylinder for pile foundation self-balancing method and self-sealing piston thereof |
| CN116857257A (en) * | 2023-07-14 | 2023-10-10 | 佛山市禅城区余怡机械科技有限公司 | Hydraulic cylinder sealing device |
| CN116857257B (en) * | 2023-07-14 | 2024-05-10 | 湾流油压(广州)技术有限公司 | Hydraulic cylinder sealing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180309 Termination date: 20190726 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |