CN202946478U - Oil cylinder, hydraulic system and engineering machinery - Google Patents
Oil cylinder, hydraulic system and engineering machinery Download PDFInfo
- Publication number
- CN202946478U CN202946478U CN 201220521909 CN201220521909U CN202946478U CN 202946478 U CN202946478 U CN 202946478U CN 201220521909 CN201220521909 CN 201220521909 CN 201220521909 U CN201220521909 U CN 201220521909U CN 202946478 U CN202946478 U CN 202946478U
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- Prior art keywords
- cylinder barrel
- guide sleeve
- piston
- cylinder
- oil cylinder
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Abstract
The utility model discloses an oil cylinder, a hydraulic system and engineering machinery. The oil cylinder comprises a piston, a piston rod, a cylinder barrel, a guide sleeve and an end cover. The piston is connected with one end of the piston rod, is arranged in the inner portion of the cylinder barrel, and is capable of moving back and forth in the inner portion of the cylinder barrel. The guide sleeve is arranged in the inner portion of the cylinder barrel and fixedly arranged at one end of the cylinder sleeve. The end cover is arranged at the other end of the cylinder barrel and is fixedly connected with the cylinder barrel. A concave hole is formed at one end of the piston, and the end of the piston is connected with the piston rod. The concave hole is connected with an oil tank through an oil-way. The guide sleeve is provided with a boss, and the boss matches with the concave hole. The hydraulic system and the engineering machinery both comprise the oil cylinder and are simple in structure, easy to produce and low in cost.
Description
Technical field
The utility model relates to engineering machinery field, particularly a kind of oil cylinder, hydraulic system and engineering machinery.
Background technique
When hydraulic jack is protruding, clash into for preventing that piston head and end cap etc. are local, need take measures oil cylinder is cushioned, at present, the normal buffering method that adopts, arranges floating buffer ring between employing piston rod and guide sleeve and carries out throttling buffering as the excavator oil cylinder for carrying out throttling in opposite chamber.This kind mode is to single-stage oil cylinder successful, but to multi-stage oil cylinder, because the space is less, causes conventional throttle mechanism can't be set.Therefore, for multi-stage oil cylinder, generally adopt dual mode to cushion, a kind of is by controlling outside fuel feeding, adjusts fuel supply flow rate and pressure when multi-stage oil cylinder is about to change grade, thereby slows down the relative velocity of two cylinder barrels; Another kind of mode is by the inner additional cushion device of oil cylinder.
For adopting the mode that outside oil circuit is realized buffering of controlling, whole hydraulic circuit need to increase relevant hydraulic element, sometimes also needing increases piston position signal collecting device and corresponding signal control gear, makes cylinder structure become complicated, easily causes potential faults.And for the mode that adopts the inner additional cushion device of oil cylinder, the oil cylinder cost will increase greatly, and is very uneconomical.
The model utility content
In view of this, the utility model proposes a kind of oil cylinder, hydraulic system and engineering machinery, the problem that causes multi-stage oil cylinder complex structure and cost to increase because of the buffering method of being taked to solve oil cylinder.
On the one hand, the utility model provides a kind of oil cylinder, comprises piston, piston rod, cylinder barrel, guide sleeve and end cap, and described piston is connected with described piston rod one end, is placed in described cylinder barrel inner, and can moves back and forth in described cylinder barrel inside; It is inner that described guide sleeve is placed in described cylinder barrel, is fixedly installed in an end of described cylinder barrel; Described end cap is located at the other end of described cylinder barrel, is fixedly connected with described cylinder barrel; The end that described piston is connected with described piston rod is provided with shrinkage pool, and described shrinkage pool is connected with fuel tank by oil circuit; Described guide sleeve is provided with boss, and described boss can coordinate with described shrinkage pool.
Further, described oil cylinder is double-deck oil cylinder, and described cylinder barrel comprises the first cylinder barrel and the second cylinder barrel, and it is inner that described the second cylinder barrel is placed in described the first cylinder barrel; Described piston comprises first piston and the second piston, and described first piston is connected with an end of the second cylinder barrel, and described the second piston is connected with an end of described piston rod; Described guide sleeve comprises the first guide sleeve and the second guide sleeve, and described the first guide sleeve and described the second guide sleeve are arranged on respectively in described the first cylinder barrel and described the second cylinder barrel.
Further, described first piston coordinates with described the first cylinder barrel, and described the second piston coordinates with described the second cylinder barrel, and described shrinkage pool is located on described the second piston, and described boss is located on described the second guide sleeve.
Further, described shrinkage pool forms annular groove along described the second piston one circle, and described boss circularizes tapered plug along described the second guide sleeve one cast.
Further, described the first guide sleeve is threaded connection the end that mode is fixed on described the first cylinder barrel, and described the second guide sleeve is threaded connection the end that mode is fixed on described the second cylinder barrel.
The fitting surface of described the first guide sleeve and described the second cylinder barrel is provided with one or more seal rings further, and described the second guide sleeve and described piston rod are provided with one or more seal rings.
Adopt the oil cylinder of this structure, described boss and described shrinkage pool are easily processed, and simple in structure, with low cost, cushioning effect is obvious.
On the other hand, the utility model also provides a kind of hydraulic system, and described hydraulic system comprises oil cylinder, and described oil cylinder is oil cylinder as mentioned above.
In addition, the utility model also provides a kind of engineering machinery, and described engineering vehicle comprises hydraulic system, and described hydraulic system is hydraulic system as above.
Further, described engineering machinery comprises mining trolley.
Description of drawings
The accompanying drawing that consists of a part of the present utility model is used to provide further understanding of the present utility model, and illustrative examples of the present utility model and explanation thereof are used for explaining the utility model, do not consist of improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is cushion cylinder cross-sectional schematic provided by the utility model;
Description of reference numerals
1 first piston
2 second pistons
3 first cylinder barrels
4 shrinkage pools
5 second cylinder barrels
6 piston rods
7 boss
8 first guide sleeves
9 second guide sleeves
Embodiment
Need to prove, in the situation that do not conflict, embodiment and the feature in embodiment in the utility model can make up mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the utility model in detail.
Basic thought of the present utility model is: cause cylinder structure to become complicated for solving the buffering method that existing oil cylinder adopts, the problem that cost increases the utility model proposes a kind of oil cylinder, and the buffering method that this oil cylinder adopts is simple in structure, easily processing, cost is also relatively cheap.
Below in conjunction with Fig. 1, preferred embodiment of the present utility model is described in further detail:
Oil cylinder described in the utility model, comprise piston, piston rod 6, cylinder barrel, guide sleeve and end cap, described piston is connected with described piston rod 6, be generally and be fixedly connected with, be installed on described cylinder barrel inner, and can move back and forth in described cylinder barrel inside, an end of described cylinder barrel is provided with end cap, and the other end of described cylinder barrel is provided with guide sleeve.Need to prove, because the effect of described guide sleeve is to be piston guide, therefore to be arranged on described cylinder barrel inner for described guide sleeve.
In technique scheme, described piston is provided with shrinkage pool 4 with the end that described piston rod 6 is connected, described shrinkage pool 4 is connected with fuel tank by oil circuit, described guide sleeve is provided with boss 7 near an end of described piston, described boss 7 can coordinate with described shrinkage pool 4, and namely described boss 7 can extend in described shrinkage pool 4 and go.the oil cylinder of this structure, when described piston rod 6 stretches out outward, the hydraulic oil that is positioned in rod chamber can pass through described shrinkage pool 4, flow back to fuel tank through oil circuit, when the shrinkage pool 4 of described piston when described boss 7 on described guide sleeve is about to contact, hydraulic oil in rodless cavity can only flow out by the matching gap of described shrinkage pool 4 with described boss 7, because the gap diminishes gradually, therefore, the resistance of running of hydraulic power oil increases gradually, flow velocity slows down, the outwardly directed speed of described piston rod 6 also can be slack-off gradually, described piston can contact with lower speed with described guide sleeve, violent shock can not occur, effectively prevented the damage of associated components.
In technique scheme, described oil cylinder is double-deck oil cylinder, and described cylinder barrel comprises the first cylinder barrel 3 and the second cylinder barrel 5, and described the second cylinder barrel 5 is placed in described the first cylinder barrel 3 inside; Described piston comprises first piston 1 and the second piston 2, and described first piston 1 is connected with an end of described the second cylinder barrel 5, is generally to be fixedly connected with, and described the second piston 2 is connected with an end of described piston rod 6, is generally to be fixedly connected with; Described guide sleeve comprises the first guide sleeve 8 and the second guide sleeve 9, described the first guide sleeve 8 and described the second guide sleeve 9 are arranged on respectively in described the first cylinder barrel 3 and described the second cylinder barrel 5, described the first guide sleeve 8 coordinates with described the second cylinder barrel 5, described the second guide sleeve 9 coordinates with described piston rod 6, and described the second cylinder barrel 5 and described piston rod 6 are realized fore and aft motion respectively under the guiding of described the first guide sleeve 8 and described the second guide sleeve 9.
In technique scheme, for double-deck oil cylinder, described first piston 1 coordinates with described the first cylinder barrel 3, and described the second piston 2 coordinates with described the second cylinder barrel 5.When described piston rod 6 protruding, when described first piston 1 contacted with described the first guide sleeve 8, described the second piston 2 still can continue overhanging, therefore, described shrinkage pool 4 is located on the second piston 2, and the described boss 7 that coordinates with described shrinkage pool 4 is located on described the second guide sleeve 9.
Further, described shrinkage pool 4 forms annular groove along described the second piston 2 one circles, and described boss 7 circularizes tapered plug along described the second guide sleeve 9 one casts.Need to prove, the diameter of described annular groove should be greater than the diameter of described piston rod 6, and described annular groove can just coordinate with the tapered plug that described boss 7 forms.
In technique scheme, coordinating between described guide sleeve and described cylinder barrel is Spielpassung, and described guide sleeve is threaded connection the end that mode is fixed on described cylinder barrel.For above-mentioned double-deck oil cylinder, to deviate from described the first cylinder barrel 3 for preventing described the first guide sleeve 8, an end of described the first guide sleeve 8 is threaded connection the end that mode is fixed on described the first cylinder barrel 3.Accordingly, deviate from described the second cylinder barrel 5 for preventing described the second guide sleeve 9, an end of described the second guide sleeve 9 is threaded connection the end that mode is fixed on described the second cylinder barrel 5.Thread connecting mode described herein, comprise that described the first guide sleeve 8 and described the second guide sleeve 9 are provided with outside thread, the inner internal thread that can coordinate with described the first guide sleeve 8 and described the second guide sleeve 9 that is respectively equipped with on described the first cylinder barrel 3 and described the second cylinder barrel 5; Secondly, can also be by the counterface at described the first guide sleeve 8 and described the first cylinder barrel 3, the counterface of described the second guide sleeve 9 and described the second cylinder barrel 5, the mode that adds cartridge screw is fixed.Need to prove why connect with thread connecting mode, is for parts such as for convenience detach and the described pistons of replacing.
Further, for preventing hydraulic fluid leak, described guide sleeve and described piston rod 6 fitting surfaces are provided with seal ring, for above-mentioned double-deck oil cylinder, described the first guide sleeve 8 is provided with one or more seal rings with the fitting surface of described the second cylinder barrel 5, and described the second guide sleeve 9 is provided with one or more seal rings with described piston rod 6.
Need to prove, be provided with oil inlet and outlet near a side of described guide sleeve on above-mentioned piston rod, described oil inlet and outlet is connected with oil circuit, need to stretch out or when regaining piston, oil cylinder passes through described oil inlet and outlet and passes in and out oily.
On the other hand, the utility model also provides a kind of hydraulic system, and described hydraulic system comprises oil cylinder, and described oil cylinder is above-mentioned oil cylinder.
In addition, the utility model also provides a kind of engineering machinery, and described engineering machinery comprises hydraulic system, and described hydraulic system is above-mentioned hydraulic system.
Further, described engineering machinery comprises mining trolley.
The above is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (9)
1. an oil cylinder, is characterized in that, comprising:
Piston, piston rod (6) and cylinder barrel, described piston is connected with described piston rod (6) one ends, is placed in described cylinder barrel inner, and can moves back and forth in described cylinder barrel inside;
It is inner that guide sleeve, described guide sleeve are placed in described cylinder barrel, is fixedly installed in an end of described cylinder barrel;
End cap is located at the other end of described cylinder barrel, is fixedly connected with described cylinder barrel;
The end that described piston is connected with described piston rod (6) is provided with shrinkage pool (4), and described shrinkage pool (4) is connected with fuel tank by oil circuit;
Described guide sleeve is provided with boss (7), and described boss (7) coordinates with described shrinkage pool (4).
2. oil cylinder according to claim 1, is characterized in that, described oil cylinder is double-deck oil cylinder, and described cylinder barrel comprises the first cylinder barrel (3) and the second cylinder barrel (5), and described the second cylinder barrel (5) is placed in described the first cylinder barrel (3) inside; Described piston comprises first piston (1) and the second piston (2), and described first piston (1) is connected with an end of the second cylinder barrel (5), and described the second piston is connected with an end of described piston rod (6); Described guide sleeve comprises the first guide sleeve (8) and the second guide sleeve (9), and described the first guide sleeve (8) and described the second guide sleeve (9) are arranged on respectively in described the first cylinder barrel (3) and described the second cylinder barrel (5).
3. oil cylinder according to claim 2, it is characterized in that, described first piston (1) coordinates with described the first cylinder barrel (3), described the second piston (2) coordinates with described the second cylinder barrel (5), described shrinkage pool (4) is located on described the second piston (2), and described boss (7) is located on described the second guide sleeve (9).
4. oil cylinder according to claim 3, is characterized in that, described shrinkage pool (4) forms annular groove along described the second piston (2) one circles, and described boss (7) circularizes tapered plug along described the second guide sleeve (9) one casts.
5. the described oil cylinder of any one according to claim 2 to 4, it is characterized in that described the first guide sleeve (8) mode of being threaded connection is fixed on an end of described the first cylinder barrel (3), described the second guide sleeve (9) mode of being threaded connection is fixed on an end of described the second cylinder barrel (5).
6. the described oil cylinder of any one according to claim 2 to 4, it is characterized in that, described the first guide sleeve (8) is provided with one or more seal rings with the fitting surface of described the second cylinder barrel (5), and described the second guide sleeve (9) is provided with one or more seal rings with described piston rod (6).
7. a hydraulic system, comprise oil cylinder, and described oil cylinder is the described oil cylinder of any one in claim 1 to 6.
8. an engineering machinery, comprise hydraulic system, it is characterized in that, described hydraulic system is hydraulic system claimed in claim 7.
9. engineering machinery according to claim 8, is characterized in that, described engineering machinery comprises mining trolley.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220521909 CN202946478U (en) | 2012-10-12 | 2012-10-12 | Oil cylinder, hydraulic system and engineering machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220521909 CN202946478U (en) | 2012-10-12 | 2012-10-12 | Oil cylinder, hydraulic system and engineering machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202946478U true CN202946478U (en) | 2013-05-22 |
Family
ID=48422184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220521909 Expired - Fee Related CN202946478U (en) | 2012-10-12 | 2012-10-12 | Oil cylinder, hydraulic system and engineering machinery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202946478U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103738136A (en) * | 2014-01-27 | 2014-04-23 | 徐州重型机械有限公司 | Independent suspension system and crane with same |
-
2012
- 2012-10-12 CN CN 201220521909 patent/CN202946478U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103738136A (en) * | 2014-01-27 | 2014-04-23 | 徐州重型机械有限公司 | Independent suspension system and crane with same |
| CN103738136B (en) * | 2014-01-27 | 2017-02-15 | 徐州重型机械有限公司 | Independent suspension system and crane with same |
| US9796233B2 (en) | 2014-01-27 | 2017-10-24 | Xuzhou Heavy Machinery Co., Ltd. | Independent suspension system and crane having same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Loudi Zhongxing Hydraulic Fittings Co., Ltd. Assignor: Sanyi Heavy Industry Co., Ltd. Contract record no.: 2014430000138 Denomination of utility model: Hydraulic cylinder, hydraulic system and engineering machine Granted publication date: 20130522 License type: Exclusive License Record date: 20140721 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130522 Termination date: 20181012 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |