CN203614507U - Two-stage equal-thrust hydraulic oil cylinder - Google Patents
Two-stage equal-thrust hydraulic oil cylinder Download PDFInfo
- Publication number
- CN203614507U CN203614507U CN201320831394.6U CN201320831394U CN203614507U CN 203614507 U CN203614507 U CN 203614507U CN 201320831394 U CN201320831394 U CN 201320831394U CN 203614507 U CN203614507 U CN 203614507U
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- piston cylinder
- piston rod
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- Expired - Lifetime
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- 239000010720 hydraulic oil Substances 0.000 title abstract 5
- 238000007789 sealing Methods 0.000 claims abstract description 12
- 210000004907 gland Anatomy 0.000 claims abstract description 4
- 239000012530 fluid Substances 0.000 claims description 20
- 239000007787 solid Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 239000003921 oil Substances 0.000 abstract 6
- 238000006243 chemical reaction Methods 0.000 description 2
- 208000019901 Anxiety disease Diseases 0.000 description 1
- 230000036506 anxiety Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model discloses a two-stage equal-thrust hydraulic oil cylinder. The two-stage equal-thrust hydraulic oil cylinder comprises an outer cylinder body, a guide sleeve, a gland, a first-stage piston cylinder body, a second-stage piston cylinder body and a piston rod, wherein the first-stage piston cylinder body, the second-stage piston cylinder body and the piston rod are sequentially arranged from outside to inside, a piston and a sealing gasket are arranged at the rear end of the first-stage piston cylinder body, another piston and another sealing gasket are arranged at the rear end of the second-stage piston cylinder body, a rodless cavity oil port is formed in the rear end of the outer cylinder body, and an ejector block is fixedly connected to the front end of the second-stage piston cylinder body. The two-stage equal-thrust hydraulic oil cylinder is characterized in that an oil distribution base is arranged on the portion, between the first-stage piston cylinder body and the piston rod, at back of the second-stage piston cylinder body, the oil distribution base is fixedly connected with the first-stage piston cylinder body and the piston rod and provided with an oil hole communicated with the front end and the rear end of the oil distribution base, a sealing base is connected to the rear end of the second-stage piston cylinder body, an oil pipe communicated with the front end and the rear end of the piston rod is fixedly arranged in the piston rod, and a piston is fixedly arranged at the front end of the piston rod. The two-stage equal-thrust hydraulic oil cylinder has the advantages of being low in manufacturing cost and convenient to use.
Description
Technical field
The utility model relates to the thrust hydraulic jacks such as a kind of two-stage.
Background technique
Two-stage hydraulic jack, because of its compact structure, can be realized the stroke longer than single-stage oil cylinder in given installing space, thereby is used widely the in the situation that of installing space anxiety; The two-stage hydraulic jack generally adopting at present, can not meet and in whole drive-in step, guarantee that the thrust of every one-level equates, if two-stage hydraulic jack will guarantee every one-level thrust and will equate, just must increase the working pressure of one-level below meets, so just must increase the wall thickness of cylinder barrel, cause the manufacture cost of oil cylinder to increase, and use not aspect.
Model utility content
The purpose of this utility model is for prior art above shortcomings, and the thrust hydraulic jacks such as a kind of two-stage are provided, and it has advantages of low cost of manufacture, easy to use.
For achieving the above object, the thrust hydraulic jacks such as two-stage of the present utility model, comprise outer cylinder body, guide sleeve, gland, the first stage piston cylinder body setting gradually from outside to inside, second piston cylinder body and piston rod, rear end at first stage piston cylinder body and second piston cylinder body is all installed with piston and seal ring, rear end of the cylinder block is provided with rodless cavity hydraulic fluid port outside, the front end of second piston cylinder body is fixedly connected with jacking block, it is characterized in that being provided with oil distribution seat between the first stage piston cylinder body at second piston cylinder body rear and piston rod, oil distribution seat and first stage piston cylinder body and solid rod joint, oil distribution seat is provided with the oilhole that is communicated with its front end and back end, in the rear end of second piston cylinder body, be associated with sealing seat, in piston rod, be installed with the oil pipe that is communicated with its front end and back end, be installed with piston at the front end of piston rod.
In the time of the oil-feed of rodless cavity hydraulic fluid port, first promote first stage piston cylinder body, oil distribution seat and piston rod reach, oil distribution seat promotes the reach of second piston cylinder body simultaneously, pressure oil enters between oil distribution seat and second piston cylinder body and the second piston inner chamber of cylinder block at jacking block rear, now the thrust of jacking block is the large chamber thrust in first stage piston cylinder body, until the stroke of first stage piston cylinder body is covered, first stage piston cylinder body, oil distribution seat and piston rod no longer move forward, pressure oil continues to promote the reach of second piston cylinder body, now the thrust of jacking block is that cavity thrust between second piston cylinder body and the piston rod in oil distribution seat front adds the loculus thrust in the second piston cylinder body of upper piston rod front, until the stroke of second piston cylinder body is covered, the utility model, by the radial dimension of first stage piston cylinder body, second piston cylinder body and piston rod is set, can be realized the thrusts such as two-stage, without working pressure and the increase cylinder barrel thickness of conversion fluid, has advantages of low cost of manufacture, easy to use.
As further improvement of the utility model, oil distribution seat connects firmly by the nut that holds out against on the step and the piston rod that match with piston rod and first stage piston cylinder body; Be convenient to installation and maintenance.
As further improvement of the utility model, be provided with the rod chamber hydraulic fluid port communicating with its inner chamber at the front end of outer cylinder body, in first stage piston cylinder body, oil distribution seat and piston rod, be provided with the retraction oil duct being connected, two hydraulic fluid ports that first stage piston cylinder body inside contracts back oil road are positioned on the inside and outside wall in its piston front, two hydraulic fluid ports that oil distribution seat inside contracts back oil road are positioned on its inside and outside wall, and two hydraulic fluid ports that piston rod inside contracts back oil road are positioned on the piston rod outer wall of sealing seat both sides; Can become two-way cylinder, and second piston cylinder body, first stage piston cylinder body are regained successively, avoid occurring disorderly level phenomenon, have advantages of that operating mode is stable, good reliability.
As further improvement of the utility model, be equipped with seal ring at the inwall of sealing seat and the outer wall of piston rod upper piston; Can improve sealability.
In sum, the utlity model has that low cost of manufacture, easy to use, operating mode are stable, the advantage of good reliability.
Accompanying drawing explanation
Fig. 1 is the utility model embodiment's plan view.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figure 1, the thrust hydraulic jacks such as this two-stage, comprise outer cylinder body 1, guide sleeve 2, gland 3, the first stage piston cylinder body 4 setting gradually from outside to inside, second piston cylinder body 5 and piston rod 6, rear end at first stage piston cylinder body 4 and second piston cylinder body 5 is all installed with piston and seal ring, be provided with rodless cavity hydraulic fluid port 19 in outer cylinder body 1 rear end, be provided with the rod chamber hydraulic fluid port 7 communicating with its inner chamber at the front end of outer cylinder body 1, the front end of second piston cylinder body 5 is fixedly connected with jacking block 8, between the first stage piston cylinder body 4 at second piston cylinder body 5 rears and piston rod 6, be provided with oil distribution seat 9, oil distribution seat 9 connects firmly by the nut 10 that holds out against on the step and the piston rod 6 that match with piston rod 6 and first stage piston cylinder body 4, oil distribution seat 9 is provided with the oilhole 11 that is communicated with its front end and back end, in the rear end of second piston cylinder body 5, be associated with sealing seat 12, in piston rod 6, be installed with the oil pipe 13 that is communicated with its front end and back end, be installed with piston 14 at the front end of piston rod 6 by locking nut 15, be equipped with seal ring at the inwall of sealing seat 12 and the outer wall of piston 14, in first stage piston cylinder body 4, oil distribution seat 9 and piston rod 6, be equipped with the retraction oil duct being connected, two hydraulic fluid ports that first stage piston cylinder body inside contracts back oil road 16 are positioned on the inside and outside wall in its piston front, two hydraulic fluid ports that oil distribution seat inside contracts back oil road 17 are positioned on its inside and outside wall, and two hydraulic fluid ports that piston rod inside contracts back oil road 18 are positioned on piston rod 6 outer walls of sealing seat 12 both sides.
In the time of 19 oil-feed of rodless cavity hydraulic fluid port, first promote first stage piston cylinder body 4, oil distribution seat 9 and piston rod 6 move forward, while oil distribution seat 9 promotes second piston cylinder body 5 and moves forward, pressure oil enters between oil distribution seat 9 and second piston cylinder body 5 by oilhole 11 and oil pipe 13 and second piston cylinder body 5 inner chambers at jacking block 8 rears, now the thrust of jacking block 8 is the large chamber thrust in first stage piston cylinder body 4, until the stroke of first stage piston cylinder body 4 is covered, first stage piston cylinder body 4, oil distribution seat 9 and piston rod 6 no longer move forward, pressure oil continues to promote second piston cylinder body 5 and moves forward, now the thrust of jacking block 8 is that cavity thrust between second piston cylinder body 5 and the piston rod 6 in oil distribution seat 8 fronts adds the loculus thrust in upper piston rod 6 front second piston cylinder bodies 5, until the stroke of second piston cylinder body 5 is covered, in the time of 7 oil-feed of rod chamber hydraulic fluid port, by each retraction oil duct, pressure oil is introduced into the cavity between grade piston/cylinder 5 and piston rod 6, enter again the cavity between outer cylinder body 1 and first stage piston cylinder body 4, second piston cylinder body 5, first stage piston cylinder body 4 are regained successively, avoid occurring disorderly level phenomenon, have advantages of that operating mode is stable, good reliability, the utility model, by the radial dimension of first stage piston cylinder body 4, second piston cylinder body 5 and piston rod 6 is set, can be realized the thrusts such as two-stage, without working pressure and the increase cylinder barrel thickness of conversion fluid, has advantages of low cost of manufacture, easy to use.
Claims (4)
1. the thrust hydraulic jack such as two-stage, comprise outer cylinder body, guide sleeve, gland, the first stage piston cylinder body setting gradually from outside to inside, second piston cylinder body and piston rod, rear end at first stage piston cylinder body and second piston cylinder body is all installed with piston and seal ring, rear end of the cylinder block is provided with rodless cavity hydraulic fluid port outside, the front end of second piston cylinder body is fixedly connected with jacking block, it is characterized in that being provided with oil distribution seat between the first stage piston cylinder body at second piston cylinder body rear and piston rod, oil distribution seat and first stage piston cylinder body and solid rod joint, oil distribution seat is provided with the oilhole that is communicated with its front end and back end, in the rear end of second piston cylinder body, be associated with sealing seat, in piston rod, be installed with the oil pipe that is communicated with its front end and back end, be installed with piston at the front end of piston rod.
2. the thrust hydraulic jack such as a kind of two-stage as claimed in claim 1, is characterized in that oil distribution seat connects firmly by the nut that holds out against on the step and the piston rod that match with piston rod and first stage piston cylinder body.
3. the thrust hydraulic jack such as a kind of two-stage as claimed in claim 1 or 2, it is characterized in that being provided with at the front end of outer cylinder body the rod chamber hydraulic fluid port communicating with its inner chamber, in first stage piston cylinder body, oil distribution seat and piston rod, be provided with the retraction oil duct being connected, two hydraulic fluid ports that first stage piston cylinder body inside contracts back oil road are positioned on the inside and outside wall in its piston front, two hydraulic fluid ports that oil distribution seat inside contracts back oil road are positioned on its inside and outside wall, and two hydraulic fluid ports that piston rod inside contracts back oil road are positioned on the piston rod outer wall of sealing seat both sides.
4. the thrust hydraulic jack such as a kind of two-stage as claimed in claim 3, is characterized in that being equipped with seal ring at the inwall of sealing seat and the outer wall of piston rod upper piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320831394.6U CN203614507U (en) | 2013-12-17 | 2013-12-17 | Two-stage equal-thrust hydraulic oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320831394.6U CN203614507U (en) | 2013-12-17 | 2013-12-17 | Two-stage equal-thrust hydraulic oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203614507U true CN203614507U (en) | 2014-05-28 |
Family
ID=50767156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320831394.6U Expired - Lifetime CN203614507U (en) | 2013-12-17 | 2013-12-17 | Two-stage equal-thrust hydraulic oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203614507U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109780003A (en) * | 2019-01-31 | 2019-05-21 | 山东万通液压股份有限公司 | A kind of flexible thrust double acting cylinder of stroke limit second level |
| CN111264133A (en) * | 2020-03-01 | 2020-06-12 | 宁波奔野重工股份有限公司 | Adjustable integrated distance adjusting device of double-chain ditcher |
-
2013
- 2013-12-17 CN CN201320831394.6U patent/CN203614507U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109780003A (en) * | 2019-01-31 | 2019-05-21 | 山东万通液压股份有限公司 | A kind of flexible thrust double acting cylinder of stroke limit second level |
| CN111264133A (en) * | 2020-03-01 | 2020-06-12 | 宁波奔野重工股份有限公司 | Adjustable integrated distance adjusting device of double-chain ditcher |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |