CN209180154U - A kind of hydraulic cylinder - Google Patents
A kind of hydraulic cylinder Download PDFInfo
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- CN209180154U CN209180154U CN201822255750.XU CN201822255750U CN209180154U CN 209180154 U CN209180154 U CN 209180154U CN 201822255750 U CN201822255750 U CN 201822255750U CN 209180154 U CN209180154 U CN 209180154U
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- oil
- piston rod
- piston
- oil duct
- hydraulic cylinder
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Abstract
The utility model relates to a kind of hydraulic cylinders, including cylinder barrel, piston rod, piston, oil path in oil cylinder and outer cover, oil path in oil cylinder includes the first oil duct, the second oil duct, the first oil pocket and the second oil pocket, first, second oil duct is arranged on the piston rod, and one end of the first oil duct and external oil circuit connection, the other end are connected to the first oil pocket, first oil pocket is used for the reset of piston, one end of second oil duct and external oil circuit connection, the other end are connected to the second oil pocket, and second oil pocket is used for the ejection of the piston.Piston rod is structure as a whole with piston.One end of outer cover is connect with piston rod, and the other end is connect by wear ring with cylinder barrel.The utility model oil duct is arranged on the piston rod, failure caused by avoiding because of Tubing failure；By piston, piston rod, earrings one-piece integrated structure, installation space inside oil cylinder is saved, integral strength is improved；Increase outer cover, protects piston rod inside outer cover always, do not destroyed by external object, improve the service life of oil cylinder.
Description
Technical field
The utility model relates to a kind of hydraulic cylinder more particularly to a kind of engineering machinery hydraulic cylinders, belong to engineering machine
Tool connector technical field.
Background technique
Currently, the usual operation ring of engineering machinery is severe, if hydraulic shear tears building open, hydraulic shear is in the operation for tearing building open
Journey will receive the touching of the objects such as construction wall, building iron, and its oil pipe of used hydraulic cylinder on existing hydraulic shear
It is welded to the outside of cylinder block, as shown in Figure 1, oil pipe 18 also will receive construction wall, stone in actual use
Or building iron collision, collide with, the oil pipe being welded on cylinder body will appear damage, lead to oil cylinder high failure rate.
Utility model content
The utility model not only takes in view of the deficienciess of the prior art, provide a kind of simple hydraulic cylinder of structure
Disappeared the oil circuit being welded on outside cylinder body, avoids oil cylinder failure problems caused by damaging because of oil circuit, and save hydraulic cylinder
Assembly space.
The technical solution that the utility model solves above-mentioned technical problem is as follows: a kind of hydraulic cylinder, including cylinder barrel, piston
Bar, piston and oil path in oil cylinder, the oil path in oil cylinder include the first oil duct, the second oil duct, the first oil pocket and the second oil pocket, and described the
One oil duct and the second oil duct are arranged on the piston rod, one end of first oil duct and external oil circuit connection, and described first
The other end of oil duct is connected to first oil pocket, and first oil pocket is used for the reset of the piston, second oil duct
One end and external oil circuit connection, the other end of second oil duct are connected to second oil pocket, and second oil pocket is used for institute
State the ejection of piston.
The beneficial effects of the utility model are: the utility model structure is simple, and it is easy to operate, eliminate external welded type oil
Pipe design on the piston rod by the oil duct setting of hydraulic cylinder, and designs corresponding oil pocket in oil cylinder, avoids severe operation ring
Collision of the object to oil duct in border, failure problems caused by avoiding because of Tubing failure, while also saving the assembly of hydraulic cylinder
Space.
Based on the above technical solution, the utility model can also do following improvement.
Further, first oil duct, second oil duct respectively include orthogonal radial entrance oil duct and axis
To oil transportation oil duct.
Beneficial effect using above-mentioned further scheme is that radial lead to is equipped between the first oil duct and first oil pocket
Road, the inner end of the axial oil transportation oil duct of first oil duct are equipped with oil stifled 9.Under the premise of guaranteeing piston rod support strength, just
In the processing of oil duct.
Further, the piston is arranged on the inner end of the piston rod, and the piston rod is integrated with the piston
Structure.
Beneficial effect using above-mentioned further scheme, which is that the oil cylinder piston and piston rod of existing hydraulic cylinder use, divides
It is cumbersome and unrestrained to be attached fixed and sealing, structure using modes fit seals such as screw thread or card keys therebetween for body structure
Take space, be unsatisfactory for that hydraulic cylinder mounting structure is compact, the big demand of oil cylinder stroke, using integral structure design piston rod and
Piston eliminates cumbersome connection and sealing, and saves the installation space of piston, so that hydraulic cylinder is answered in engineering machinery
With more extensively.
It further, further include outer cover, one end of the outer cover is connect with the piston rod, and the other end of the outer cover is logical
Wear ring is crossed to connect with the cylinder barrel.
Beneficial effect using above-mentioned further scheme is that the cylinder piston rod extension of existing hydraulic cylinder does not have
It protects, such as the reinforcing bar object for the stone, leakage for applying the hydraulic cylinder for carrying out forcible entry work in hydraulic shear often to be splashed touches
Wound scratches piston rod, causes oil cylinder oil leak serious, high failure rate.Therefore outer cover is devised, outer cover is installed on the piston rod, and
It acts, the piston rod of stretching can be protected with piston rod, avoid dust from polluting piston rod, stone, reinforcing bar etc. is avoided to damage
Piston rod protects piston rod, extends the service life of piston rod.Increase outside protective covers on the outside of oil cylinder, outer cover is fixedly mounted on work
On stopper rod, with piston rod synchronization action, protects piston rod inside outer cover always, do not destroyed by external object, improve oil
The service life of cylinder.
Further, the outer cover is connect by outer cover mounting plate and fastening bolt with the piston rod.
Beneficial effect using above-mentioned further scheme is, quick and easy for installation, safeguards convenient for postorder.
Further, second oil pocket includes the oil storage tank that the piston rod inner end is arranged in.
Beneficial effect using above-mentioned further scheme is that formation oil pocket can store a little hydraulic between oil storage tank and cylinder barrel
Oil plays certain buffer function to piston in piston action process.
Further, second oil pocket further includes the shoe cream room being arranged in the piston, the shoe cream room with it is described
Oil storage tank connection.
Beneficial effect using above-mentioned further scheme is that piston rod and piston integrated design, support strength is big, piston
In bar shoe cream room effect first is that can piston to integral design and piston rod play the role of mitigating its weight；Second is that can store up
It deposits a certain amount of hydraulic oil and especially plays the role of buffering to piston rod when stress is larger, reduce the failure of hydraulic cylinder
Rate.
Further, the outer end of the piston rod is equipped with earrings, and the earrings is structure as a whole with the piston rod.
Beneficial effect using above-mentioned further scheme, which is that the piston rod and earrings of existing oil cylinder use, to be welded to connect,
Meet because the workpiece of engineering machinery such as hydraulic shear needs to provide at work great cylinder thrust such as hydraulic shear forcible entry
It is needed with shearing, it is in addition hydraulic the operations such as often to be torn, pulled in practical work process, in great thrust and violent
Tear, pull movement lower oil cylinder piston bar and earrings welding position is easy to cracking, oil cylinder is caused to scrap, earrings and piston rod and
Piston, which is structure as a whole, not only increases the support strength of earrings, but also increases the bonding strength of earrings and piston rod, and oil cylinder is living
Plug, piston rod, earrings are designed to one-piece integrated structure, save installation space inside oil cylinder, improve integral strength.
Further, guide sleeve is equipped between the piston rod and the cylinder barrel, the inner wall of the guide sleeve is equipped with resistance to
Grind part and sealing element.
Beneficial effect using above-mentioned further scheme is that guide sleeve not only has the function of support guide to piston rod,
And have the function of oil sealing, wear-resisting, the hydraulic fluid leak of oil cylinder is avoided, the service life of hydraulic cylinder is extended.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of existing hydraulic cylinder；
Fig. 2 is the schematic view of the front view of the utility model；
Fig. 3 is the schematic diagram of the section structure in Fig. 2 along the direction A-A；
Fig. 4 is the overlooking structure diagram of the utility model；
Fig. 5 is the schematic perspective view of the utility model.
In figure, 1, cylinder barrel；2, piston rod；3, piston；4, the first oil duct；5, the first oil pocket；6, the second oil duct；7, oil storage
Slot；8, shoe cream room；9, oil is stifled；10, outer cover；11, wear ring；12, outer cover mounting plate；13, fastening bolt；14, earrings；15, it leads
To set；16, wearing piece；17, sealing element；18, oil pipe；19, end cap.
Specific embodiment
The principles of the present invention and feature are described below in conjunction with example, example is served only for explaining that this is practical
It is novel, it is not intended to limit the scope of the utility model.
As Figure 2-Figure 5, a kind of hydraulic cylinder, including cylinder barrel 1, piston rod 2, piston 3 and oil path in oil cylinder, the oil cylinder
Oil circuit includes the first oil duct 4, the second oil duct 6, the first oil pocket 5 and the second oil pocket, and first oil duct and the setting of the second oil duct exist
On the piston rod, one end of first oil duct and external oil circuit connection, the other end of first oil duct and described first
Oil pocket connection, first oil pocket is used for the reset of the piston, one end of second oil duct and external oil circuit connection, described
The other end of second oil duct is connected to second oil pocket, and second oil pocket is used for the ejection of the piston.
First oil duct, second oil duct respectively include orthogonal radial entrance oil duct and axial oil transportation oil
Road.Radial passage is equipped between first oil duct and first oil pocket, the inner end of the axial oil transportation oil duct of first oil duct is set
There is oil stifled 9.Oil is stifled to avoid the hydraulic oil in the first oil duct from entering in oil storage tank, under the premise of guaranteeing piston rod support strength,
Convenient for the processing of oil duct.
The piston is arranged on the inner end of the piston rod, and the piston rod is structure as a whole with the piston.It is existing
Hydraulic cylinder oil cylinder piston and piston rod use separate structure, cooperate sealing using the modes such as screw thread or card key therebetween
Part is attached fixed and sealing, and structure is cumbersome and wasting space, is unsatisfactory for that hydraulic cylinder mounting structure is compact, and oil cylinder stroke is big
Demand, using integral structure design piston rod and piston, eliminate cumbersome connection and sealing, and save the peace of piston
Space is filled, so that hydraulic cylinder is more widely applied in engineering machinery.
It further include outer cover 10, one end of the outer cover is connect with the piston rod, and the other end of the outer cover passes through wear-resisting
Ring 11 is connect with the cylinder barrel.The cylinder piston rod extension of existing hydraulic cylinder is not protected, and is such as applied in hydraulic shear
Piston rod is damaged or is scratched to the objects such as reinforcing bar for carrying out stone, leakage that the hydraulic cylinder of forcible entry work often splashed, cause
Keep oil cylinder oil leak serious, high failure rate.Therefore outer cover is devised, outer cover is installed on the piston rod, and is acted with piston rod, can be to stretching
Piston rod out is protected, and dust is avoided to pollute piston rod, and stone, reinforcing bar etc. is avoided to damage piston rod, is protected piston rod, is prolonged
The service life of process for long piston rod.Increase outside protective covers on the outside of oil cylinder, outer cover is fixedly mounted on the piston rod, synchronizes with piston rod dynamic
Make, protects piston rod inside outer cover always, do not destroyed by external object, improve the service life of oil cylinder.
The outer cover is connect by outer cover mounting plate 12 and fastening bolt 13 with the piston rod.It is quick and easy for installation, just
It is safeguarded in postorder.
Second oil pocket includes the oil storage tank 7 that the piston rod inner end is arranged in.Oil is formed between oil storage tank and cylinder barrel
Chamber can store a little hydraulic oil, and certain buffer function is played to piston in piston action process.
Second oil pocket further includes the shoe cream room 8 being arranged in the piston, and the shoe cream room and the oil storage tank connect
It is logical.Piston rod and piston integrated design, support strength is big, and the effect of shoe cream room is first is that can be to integral design in piston rod
Piston and piston rod play the role of mitigating its weight；Second is that a certain amount of hydraulic oil can be stored especially when stress is larger pair
Piston rod plays the role of buffering, reduces the failure rate of hydraulic cylinder.
The outer end of the piston rod is equipped with earrings 14, and the earrings is structure as a whole with the piston rod.Existing oil cylinder
Piston rod and earrings using be welded to connect because the workpiece of engineering machinery such as hydraulic shear needs to provide at work greatly
Cylinder thrust meet as hydraulic shear dismantles and shears needs, it is in addition hydraulic often to be torn in practical work process, pulled
Equal operations, great thrust and it is violent tear, pull movement lower oil cylinder piston bar and earrings welding position is easy to cracking,
Oil cylinder is caused to scrap, earrings and piston rod and piston, which are structure as a whole, not only increases the support strength of earrings, but also increases earrings
With the bonding strength of piston rod, oil cylinder piston, piston rod, earrings are designed to one-piece integrated structure, saved inside oil cylinder
Installation space improves integral strength.
Be equipped with guide sleeve 15 between the piston rod and the cylinder barrel, the inner wall of the guide sleeve be equipped with wearing piece 16 and
Sealing element 17.Guide sleeve not only has the function of support guide to piston rod, but also has the function of oil sealing, wear-resisting, avoids oil
The hydraulic fluid leak of cylinder extends the service life of hydraulic cylinder.
Cancel external welding oil pipe, is designed in internal piston and process oil pocket, failure problems caused by avoiding because of Tubing failure,
The assembly space of oil cylinder is also saved simultaneously.Oil cylinder piston, piston rod, earrings are designed to one-piece integrated structure, saved
Installation space inside oil cylinder, improves integral strength.Increasing outside protective covers on the outside of oil cylinder, outer cover is fixedly mounted on the piston rod,
It with piston rod synchronization action, protects piston rod inside outer cover always, is not destroyed by external object, improve the use of oil cylinder
Service life.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all practical at this
Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model
Within the scope of shield.
Claims (9)
1. a kind of hydraulic cylinder, including cylinder barrel, piston rod, piston and oil path in oil cylinder, which is characterized in that the oil path in oil cylinder includes
First oil duct, the second oil duct, the first oil pocket and the second oil pocket, first oil duct and the second oil duct are arranged in the piston rod
On, one end of first oil duct and external oil circuit connection, the other end of first oil duct are connected to first oil pocket, institute
The one end and external oil circuit connection, the other end of second oil duct for stating the second oil duct are connected to second oil pocket.
2. hydraulic cylinder according to claim 1, which is characterized in that first oil duct, second oil duct wrap respectively
Include orthogonal radial entrance oil duct and axial oil transportation oil duct.
3. hydraulic cylinder according to claim 1, which is characterized in that the inner end of the piston rod is arranged in the piston
On, the piston rod is structure as a whole with the piston.
4. hydraulic cylinder according to claim 1-3, which is characterized in that it further include outer cover, the one of the outer cover
End is connect with the piston rod, and the other end of the outer cover is connect by wear ring with the cylinder barrel.
5. hydraulic cylinder according to claim 4, which is characterized in that the outer cover passes through outer cover mounting plate and fastening bolt
It is connect with the piston rod.
6. hydraulic cylinder according to claim 1 or 3, which is characterized in that second oil pocket includes being arranged in the work
The oil storage tank of stopper rod inner end.
7. hydraulic cylinder according to claim 6, which is characterized in that second oil pocket further includes being arranged in the piston
Interior shoe cream room, the shoe cream room are connected to the oil storage tank.
8. hydraulic cylinder according to claim 1, which is characterized in that the outer end of the piston rod is equipped with earrings, the ear
Ring is structure as a whole with the piston rod.
9. hydraulic cylinder according to claim 1, which is characterized in that be equipped with guiding between the piston rod and the cylinder barrel
The inner wall of set, the guide sleeve is equipped with wearing piece and sealing element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822255750.XU CN209180154U (en) | 2018-12-29 | 2018-12-29 | A kind of hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822255750.XU CN209180154U (en) | 2018-12-29 | 2018-12-29 | A kind of hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209180154U true CN209180154U (en) | 2019-07-30 |
Family
ID=67378176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822255750.XU Active CN209180154U (en) | 2018-12-29 | 2018-12-29 | A kind of hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209180154U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116498618A (en) * | 2023-04-06 | 2023-07-28 | 华中科技大学 | Underwater high-reliability balanced unlocking cylinder |
-
2018
- 2018-12-29 CN CN201822255750.XU patent/CN209180154U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116498618A (en) * | 2023-04-06 | 2023-07-28 | 华中科技大学 | Underwater high-reliability balanced unlocking cylinder |
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