CN202499683U - Hydraulic jack with lubricating and scrubbing cavity - Google Patents
Hydraulic jack with lubricating and scrubbing cavity Download PDFInfo
- Publication number
- CN202499683U CN202499683U CN2012200094518U CN201220009451U CN202499683U CN 202499683 U CN202499683 U CN 202499683U CN 2012200094518 U CN2012200094518 U CN 2012200094518U CN 201220009451 U CN201220009451 U CN 201220009451U CN 202499683 U CN202499683 U CN 202499683U
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- Prior art keywords
- dinner
- welcome
- giving
- hydraulic
- lubricating
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Abstract
The utility model discloses a hydraulic jack with a lubricating and scrubbing cavity, which comprises a cylinder, a piston head and a piston rod. An inner guide sleeve and an outer guide sleeve are arranged between the cylinder and the piston rod, an oil cavity filled with hydraulic oil is arranged among the cylinder, the inner guide sleeve and the outer guide sleeve and is the lubricating and scrubbing cavity, and a liquid inlet hole and a liquid outlet hole are arranged at positions, corresponding to the lubricating and scrubbing cavity, on the side wall of the cylinder. The lubricating and scrubbing cavity is specially used for lubricating and scrubbing, lubrication, seal wear prevention and rust prevention effects are enhanced, and the service life of the hydraulic cylinder is prolonged.
Description
Technical field
The utility model relates to a kind of hydraulic jack, relates in particular to a kind of hydraulic jack with the lubricated chamber of giving a dinner of welcome.
Background technology
Hydraulic jack (claiming hydraulic actuating cylinder, oil cylinder etc. again) is a most important power element in the hydraulic efficiency pressure system, and it can be transformed into mechanical energy with hydraulic pressure, realizes straight reciprocating motion, and hydraulic cylinder structure is simple, and preparation designs, makes than being easier to flexibly, uses easy to maintenance.Use the difference in field according to hydraulic actuating cylinder, its profile, structure, hydraulic medium and pressure etc. are also different; Most of hydraulic actuating cylinders (for example: the alighting gear of aircraft all are applied in fields such as construction machinery and equipment and mine equipment, army's construction machinery, space flight and aviation; The adjusting bracket of warship gun muzzle position, the hoisting device of crane, fork truck, forklift and the actuating unit of hydraulic support); During use; Under the very fast and long-time situation about using of, responsiveness higher at cylinder pressure, its leak free damage also can compare serious, after damaging to a certain degree; The actuating unit of entire product will be paralysed, and causes heavy economic losses.Improve the service life of hydraulic actuating cylinder, be that the user is directed against the most important condition that hydraulic actuating cylinder proposes all the time.
If increase the service life of hydraulic actuating cylinder, to check earlier where hydraulic actuating cylinder damages easily; Through this observation in several years of applicant; Except the service life of intensity and process and assemble quality influence hydraulic actuating cylinder; The orienting sleeve dynamic seal is worn serious and leakage that cause influences the service life of hydraulic actuating cylinder; Possibly be loss of pressure or prolong time of run early stage, but the later stage may cause leakage too much, mechanism can't be moved.
In the prior art, in order to improve the durability of hydraulic actuating cylinder, the method for hydraulic actuating cylinder durability has appearred improving through change hydraulic actuating cylinder inner structure, such as:
Prior art one, as shown in Figure 1, two seals is set on orienting sleeve, be high pressure sealing together, another road is a low pressure seal, in the middle of two seals, makes a call to a hole and links to each other with the epicoele of hydraulic actuating cylinder.
Advantage: when piston rod is regained; Hole on the orienting sleeve can be led to high and low pressure sealing middle (hydraulic medium has certain lubricity) to liquid; Make liquid can lubricate the lip of high-pressure sealing ring; Prevent to bring the solid sand dust that dust ring does not filter out into when piston rod from regaining, cause the lip that grinds high-pressure sealing ring; Can be worn through preventing the sealing member lip to a certain extent, prevent the epicoele leakage, stabilizing solution cylinder pressure pulling force and the loss that reduces hydraulic medium.
Shortcoming: though 1. reduce the wearing and tearing of high-pressure sealing ring lip, the lip of the low pressure seal spare that can wear and tear can cause hydraulic actuating cylinder to be with liquid on a small scale like this, thereby reduces some pulling force and loss sub-fraction hydraulic medium; If 2. the hole of being beaten during the installation of orienting sleeve be not directly over, after the low pressure seal leakage directly over or other part of bar can lose lubricant effect, can grind high-pressure sealing ring equally if bring little sand dust into; 3. the orienting sleeve structure is restricted, must screw thread after preceding being sealed in; 4. pore volume is prone to calm the anger in beating on the orienting sleeve, if hole in the undischarged bubble meeting corrosion, contaminating fluid piezodielectric are arranged.5. if dust enters in the hole through low pressure seal, enter into the jack epicoele through the hole then and be blended into emulsion, whole like this hydraulic efficiency pressure system all can be polluted.
Prior art two, as shown in Figure 2, on orienting sleeve, increase oil hole, lubrication and seal spare makes it be difficult for being worn, and a thinking and a last scheme are similar, are in order to reach the effect of profit orienting sleeve dynamic seal equally.
Advantage: when piston rod is regained, can lubricate the lip of orienting sleeve dynamic seal, reduce wearing and tearing, increase the life-span of hydraulic actuating cylinder; The lubricant effect of lubricating oil is relatively good, and the effect that uses than prior art one can be good.
Shortcoming: 1. limited lubricated resource can only be provided, can't lubricate after lubricating oil exhausts, can make its wearing and tearing, so must regularly go oiling; 2. if provide lasting lubricating oil need increase oil pump and lubricating system, cost has increased again like this, repairs also complicated; 3. sealing member if short grained sand dust through dust ring, can directly wear and tear, and drilling operation adopts the drilling machine rapid processing; Endoporus is coarse especially; Possibly there is the iron thorn in the texture with in the part blind hole, can flows to the sealing member place, cause to scratch piston rod and seal lip with lubricating oil; 4. can't guarantee the oil hole extreme higher position when mounted, make it can't give the piston rod border lubricated, cause lubricated less than the wearing and tearing of position seals part.
The utility model content
The purpose of the utility model provides a kind of can increasing and lubricates and rust-proof effect, and the band that prolongs the service life of hydraulic actuating cylinder lubricates the hydraulic jack in the chamber of giving a dinner of welcome.
The purpose of the utility model realizes through following technical scheme:
The hydraulic jack in the lubricated chamber of giving a dinner of welcome of the band of the utility model comprises cylinder body, piston head, piston rod, orienting sleeve and outer guide sleeve in being provided with between cylinder body and the piston rod, and the fluid chamber that surrounds between cylinder body and interior orienting sleeve and the outer guide sleeve is the lubricated chamber of giving a dinner of welcome.
Technical scheme by above-mentioned the utility model provides can be found out; The hydraulic jack in the lubricated chamber of giving a dinner of welcome of the band that the utility model provides; Because orienting sleeve and outer guide sleeve in being provided with between cylinder body and the piston rod, the fluid chamber that surrounds between cylinder body and interior orienting sleeve and the outer guide sleeve for lubricating the chamber of giving a dinner of welcome, can be used to be responsible for specially lubricated and give a dinner of welcome; Increase lubricated, anti-seal wearing and tearing and rust-proof effect, prolong the service life of hydraulic actuating cylinder.
Description of drawings
Fig. 1 is the structural representation of the hydraulic jack of prior art one;
Fig. 2 is the structural representation of the hydraulic jack of prior art two;
The band that Fig. 3 provides for the utility model embodiment lubricates the structural representation of the hydraulic jack in the chamber of giving a dinner of welcome;
Fig. 4 is the hydraulic schematic diagram of jack and three-position four-way valve among the utility model embodiment.
Among the figure: 1-cylinder body, 2-piston head, 3-piston packing, 4-piston rod, 5-high pressure sealing, 6-low pressure seal, 7-orienting sleeve, 8-filling oil plug (lubricating cup), orienting sleeve in the 9-, the dynamic seal of 10-compression type, 11, outer guide sleeve.
The specific embodiment
To combine accompanying drawing that the utility model embodiment is done to describe in detail further below.
The hydraulic jack in the lubricated chamber of giving a dinner of welcome of the band of the utility model, its preferable specific embodiment is as shown in Figure 3:
Comprise cylinder body, piston head, piston rod, orienting sleeve and outer guide sleeve in being provided with between said cylinder body and the piston rod, the fluid chamber that surrounds between said cylinder body and interior orienting sleeve and the outer guide sleeve is the lubricated chamber of giving a dinner of welcome.
The position in the corresponding said lubricated chamber of giving a dinner of welcome can be provided with inlet opening and fluid hole on the sidewall of said cylinder body.
Be provided with high pressure sealing between said cylinder body and the interior orienting sleeve, can be provided with the compression type dynamic seal between said cylinder body and the outer guide sleeve.
Orienting sleeve can be provided with interior square groove towards the one side in the said lubricated chamber of giving a dinner of welcome in said.
The utility model is in order to increase the service life of hydraulic actuating cylinder, increases a lubricated chamber of giving a dinner of welcome, and is used to be responsible for specially lubricated and gives a dinner of welcome, and so just can solve the problem that occurs in the prior art.
When the hydraulic actuating cylinder long-term use, if the whole lubricated chamber of giving a dinner of welcome all is covered with sand and dust; Perhaps there are bubble and other impurity in the chamber; Perhaps the liquid in the chamber takes place to go bad, and loses lubricated and rust-proof effect, perhaps can occur consuming the situation of seal compression equally.The utility model can be done an inlet opening above the lubricated chamber of giving a dinner of welcome, a fluid hole is done in the below, just can often feed fresh lubricant medium, goes out the impurity and the sand dust that precipitate, makes the lubricated and antisoiling better effects if of hydraulic actuating cylinder.
In the engineering oil cylinder, great majority are to adopt machine oil etc. to make hydraulic oil, and lubricity is good especially; What on coal mine hydraulic supporting, use is the hydraulic oil of HFAE kind, and it is good that this hydraulic oil has a flammability resistance, has certain antirust, lubricity and good cooling property, does not have lubricating effect so worry hydraulic oil.
The orienting sleeve inside of square groove is the groove that mills into a positive four directions in the band, and use is to tighten orienting sleeve when installing to use; And can be furnished with three semi-loops, installation method has some skills, screws home to orienting sleeve interior earlier; At this moment three semi-rings of can packing into; Again interior orienting sleeve is return several buttons, in the groove that orienting sleeve is reserved in just in time three semi-rings being embedded into, play the effect of locking thread; Orienting sleeve is only pointed to the pressure of three semi-rings in during use, so can not become flexible and move back button.Sequence number 7 is the compact type sealing member (can use special flower bud type circle to replace) with big lip among the figure, and purpose is in use can the outside leakage because the dustproof cavity pressure of giving a dinner of welcome is low.
As shown in Figure 4; The used control cock of jack can be used three-position four-way valve (as: manually or electromagnetism-hydraulic pilot valve etc.); In the working process, when inlet flows into upper and lower cavity, all can there be liquid to flow to the lubricated chamber of giving a dinner of welcome and upgrades contained hydraulic oil in it; Can flow out from little return opening if any bubble when jack stops, jack has a sand dust when starting liquid therefrom return opening is rushed out.
The jack of the utility model go for difficult change and the product of maintenance occasion on, the hydraulic support of more dangerous mine (passing jack etc.) for example often is exposed to manipulator or hoisting crane under the environment of poisonous, objectionable impurities in addition; The sealing of orienting sleeve in can adequately protecting like this, long-term use are not easy to damage, and reach to prolong the hydraulic actuating cylinder effect in service life.
The above; Be merely the preferable specific embodiment of the utility model; But the protection domain of the utility model is not limited thereto; Any technical personnel of being familiar with the present technique field is in the technical scope that the utility model discloses, and the variation that can expect easily or replacement all should be encompassed within the protection domain of the utility model.Therefore, the protection domain of the utility model should be as the criterion with the protection domain of claims.
Claims (4)
1. a band lubricates the hydraulic jack in the chamber of giving a dinner of welcome; Comprise cylinder body, piston head, piston rod; It is characterized in that, orienting sleeve and outer guide sleeve in being provided with between said cylinder body and the piston rod, the fluid chamber that surrounds between said cylinder body and interior orienting sleeve and the outer guide sleeve is the lubricated chamber of giving a dinner of welcome.
2. the hydraulic jack in the lubricated chamber of giving a dinner of welcome of band according to claim 1 is characterized in that the position in the corresponding said lubricated chamber of giving a dinner of welcome is provided with inlet opening and fluid hole on the sidewall of said cylinder body.
3. the hydraulic jack in the lubricated chamber of giving a dinner of welcome of band according to claim 2 is characterized in that, is provided with high pressure sealing between said cylinder body and the interior orienting sleeve, is provided with the compression type dynamic seal between said cylinder body and the outer guide sleeve.
4. according to the hydraulic jack in claim 1, the lubricated chamber of giving a dinner of welcome of 2 or 3 described bands, it is characterized in that the one side of said interior orienting sleeve towards the said lubricated chamber of giving a dinner of welcome is provided with interior square groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200094518U CN202499683U (en) | 2012-01-10 | 2012-01-10 | Hydraulic jack with lubricating and scrubbing cavity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200094518U CN202499683U (en) | 2012-01-10 | 2012-01-10 | Hydraulic jack with lubricating and scrubbing cavity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202499683U true CN202499683U (en) | 2012-10-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200094518U Expired - Fee Related CN202499683U (en) | 2012-01-10 | 2012-01-10 | Hydraulic jack with lubricating and scrubbing cavity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202499683U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102583188A (en) * | 2012-01-10 | 2012-07-18 | 中煤北京煤矿机械有限责任公司 | Hydraulic jack with lubricating and scrubbing cavity |
-
2012
- 2012-01-10 CN CN2012200094518U patent/CN202499683U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102583188A (en) * | 2012-01-10 | 2012-07-18 | 中煤北京煤矿机械有限责任公司 | Hydraulic jack with lubricating and scrubbing cavity |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121024 Termination date: 20160110 |