CN201971589U - Triplex electro-hydraulic jack - Google Patents
Triplex electro-hydraulic jack Download PDFInfo
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- CN201971589U CN201971589U CN2011200165985U CN201120016598U CN201971589U CN 201971589 U CN201971589 U CN 201971589U CN 2011200165985 U CN2011200165985 U CN 2011200165985U CN 201120016598 U CN201120016598 U CN 201120016598U CN 201971589 U CN201971589 U CN 201971589U
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Abstract
The utility model discloses a triplex electro-hydraulic jack and aims at overcoming the defects of the conventional triplex electro-hydraulic jack that the inner cylinder body inside a triplex hydraulic cylinder can not automatically retract through the driving of hydraulic oil, the requirement for the working conditions is high and the application range is narrow. The technical measures adopted are as follows: the triplex electro-hydraulic jack comprises an outer cylinder body, a first inner cylinder body and a second inner cylinder body which are coaxially connected together in a sleeve joint manner, wherein the interior of the outer cylinder body is separated by the first inner cylinder body into an upper outer cavity and a lower outer cavity, the interior of the first inner cylinder body is partitioned by the second inner cylinder body into an upper middle cavity and a lower middle cavity, the outer cylinder body is fixed on a base, and a first oil inlet extending to the lower outer cavity is formed on the outer cylinder body, and is communicated with an oil pump and an oil tank. The triplex electro-hydraulic jack is characterized in that a second oil inlet communicated with the oil tank is also arranged on the outer cylinder body and communicated with the upper middle cavity through an oil circuit.
Description
Technical field
The utility model relates to a kind of hydraulic jacking mechanism, relates in particular to a kind of three grades of hydraulic electric jacks.
Background technology
Electronic jack be with hydraulic oil as working medium, under the driving of oil pump, hydraulic oil can impel the cylinder body in the hydraulic actuating cylinder to stretch out, and lifts heavy thing or some movable parts are moved with the top.Be to increase the action radius of cylinder body, and dwindle the volume of cylinder body after in being fully retracted hydraulic actuating cylinder, existing hydraulic actuating cylinder adopts multiple stage mostly.Existing common multistage hydraulic cylinder is under the driving of hydraulic oil, and cylinder body can only reach the outside of cylinder body, and cylinder body can only be to bounce back under the effect of push up act weight thing gravity in being retracted into hydraulic actuating cylinder the time, and the retraction of cylinder body self is weak.Therefore, this common hydraulic actuating cylinder can only be vertically or could use when being inclined upwardly, if hydraulic actuating cylinder is in level, downward-sloping or following time of state of standing upside down, cisco unity malfunction then, this makes the field of employment of hydraulic actuating cylinder have certain limitation, and the location status of hydraulic actuating cylinder is had certain requirement.
In the Chinese utility model patent (patent No.: disclose the telescopic boom that a kind of car hosit stretches with double-cylinder type 200820023719.7).Include adaptor union, the winding plant of telescopic single oil cylinder, telescopic multiple-joint oil tank, connection cylinder and arm, multiple-joint oil tank is arranged in the single oil cylinder, and single oil cylinder, multiple-joint oil tank are sleeve type; Multiple-joint oil tank is " flip-over type " and is arranged in the single oil cylinder, every joint cylinder sleeve of multiple-joint oil tank is captiveed joint with a corresponding joint arm cover in the single oil cylinder by adaptor union, the interior joint cylinder sleeve is provided with the oilhole that is communicated with hydraulic efficiency gear, and the steel rope that is arranged on the winding plant on the car hosit puts in the single oil cylinder, is connected with the interior joint arm cover.
Should flexible wall having arbitrarily to increase the design collapsing length, simple in structure, need not increase auxiliary, safe and reliable, maintenance, easily manufactured, characteristics such as cost is low.But the power of the multi-stage oil cylinder in this telescopic boom when retraction is to be provided by the steel rope that is connected with winding plant, and multi-stage oil cylinder can not bounce back voluntarily.Owing in addition winding plant need be set, this makes complex structure, compactedness poor.
Summary of the invention
For overcoming above-mentioned defective, the utility model technical issues that need to address are: a kind of three grades of hydraulic electric jacks are provided, and the cylinder body in it can either stretch out under the driving of hydraulic oil, can bounce back again, and stretch out and bounce back effectively, this hydraulic actuating cylinder can both normal operation under multiple running condition.
In order to solve the technical problem, the technical solution of the utility model: a kind of three grades of hydraulic electric jacks, comprise the outer cylinder body that connects together coaxially, first inner cylinder body and second inner cylinder body, first inner cylinder body is separated into exocoel and following exocoel to outer cylinder body inside, second inner cylinder body is separated into lumen and following lumen to the inside of first inner cylinder body, outer cylinder body is fixed on the base, on outer cylinder body, be provided with and lead to first oil inlet of exocoel down, first oil inlet communicates with oil pump and fuel tank, it is characterized in that, described outer cylinder body is provided with second oil inlet that communicates with fuel tank, and second oil inlet communicates with the described lumen of going up by oil circuit.First oil inlet and second oil inlet can be that an oil pump communicates respectively, also can be only to communicate with an oil pump simultaneously, and single the oil pump of this moment is to be connected between first oil inlet and second oil inlet.During the oil pump forward rotation, in the exocoel, the hydraulic oil that enters down in the exocoel drove the outside that inner cylinder body reaches outer cylinder body under hydraulic oil fed in first oil inlet; During the oil pump backward rotation, hydraulic oil is counter-flow in hydraulic actuating cylinder, be back in the fuel tank and originally drive the hydraulic oil that inner cylinder body reaches the outer cylinder body outside, the hydraulic oil in oil circuit flows into hydraulic actuating cylinder can drive inner cylinder body and be retracted in the outer cylinder body, to realize that inner cylinder body is retracted in the outer cylinder body.Inner cylinder body is when reaching the outer cylinder body outside, and inner cylinder body provides certain top lifting force; When inner cylinder body was retracted in the outer cylinder body, inner cylinder body provided certain pulling force.
As preferably, described oil pump is connected between first oil inlet and second oil inlet.This just requires between two oil inlets is an osed top circulation path, and single oil pump is connected between two oil inlets, makes that these three grades of hydraulic electric jack structures are simple, compact, the functional reliability height.
As preferably, be provided with first cylinder table in the bottom of first inner cylinder body, the outer peripheral face of first cylinder table cooperates with outer cylinder body inner peripheral surface liquid sealing; The bottom of second inner cylinder body is provided with second cylinder table, and liquid sealing cooperates between the second cylinder table outer peripheral face and the first inner cylinder body inner peripheral surface; Inside at first cylinder table is provided with oil duct, and this oil duct constitutes the part of described oil circuit; Be provided with penetrating oilhole on first cylinder table, oilhole is linked up exocoel and described lumen down down.Inner cylinder body reaches the outer cylinder body when outside, and hydraulic oil enters in oilhole in first inner cylinder body, and is used to drive first inner cylinder body and second inner cylinder body reaches the outer cylinder body outside; When inner cylinder body was retracted in the outer cylinder body, hydraulic oil and continued to be back in the fuel tank in oilhole is back to down exocoel.Described oil duct is located in first cylinder table, and structural compactness is good.
As preferably, described oil duct is " Qian " shape.Oil duct is " Qian " shape, makes to be convenient to the described oil duct of processing in first cylinder table.
As preferably, the export department in oil duct on described cylinder table is provided with standpipe vertically, and standpipe constitutes the part of described oil circuit, and standpipe passes second cylinder table and communicates with last lumen, is the liquid sealing bearing fit between the standpipe and second cylinder table; Riser upper end is to the thickness of the distance between the infraoral of the first inner cylinder body upper end less than second cylinder table.Be provided with standpipe, simple in structure, be convenient to be provided with, and the distance between the infraoral on standpipe upper end and first inner cylinder body makes can guarantee the unimpeded of oil circuit in the second inner cylinder body motion process less than the thickness of second cylinder table.
As preferably, described standpipe extend in second inner cylinder body from the center position of second cylinder table, is provided with open-work on the wall body of second inner cylinder body, this open-work link up second inner cylinder body inner with last lumen.Standpipe can pass second cylinder table from the outside of second inner cylinder body and extend in the lumen, but when second inner cylinder body carries out axial motion, if second inner cylinder body takes place circumferentially to rotate, then can have influence on the standpipe and first cylinder table connectivity robustness.Existing standpipe passes from the center position of second cylinder table, and this makes that the connectivity robustness between the standpipe and first cylinder table is guaranteed, second inner cylinder body can not have influence on the connective stability between the standpipe and first cylinder table in motion process.
The beneficial effects of the utility model are:
Owing in three grades of hydraulic electric jack hydraulic cylinders, be provided with oil circuit, when in hydraulic actuating cylinder, pumping into hydraulic oil by oil circuit, inner cylinder body can be under the driving of this hydraulic oil and is retracted in the outer cylinder body, and inner cylinder body is strong when retraction, when making in these three grades of hydraulic electric jacks inner cylinder body do to stretch out to move with indentation, this can provide top lifting force and pulling force successively, even hydraulic actuating cylinder is in level, tilt downwards, or even under the state that stands upside down, hydraulic actuating cylinder also can normal operation, these three grades of hydraulic electric jack pair running conditions do not require, and have expanded the Applicable scope of hydraulic actuating cylinder effectively.The retraction power of inner cylinder body is also provided by oil pump, does not need to be provided with in addition engine installation and makes the inner cylinder body retraction, and is simple in structure, can not increase too many manufacturing cost.
Description of drawings
Fig. 1 is the longitudinal sectional view of three grades of hydraulic actuating cylinders in three grades of hydraulic electric jacks of the utility model.
The specific embodiment
See Fig. 1, the structure of these three grades of hydraulic electric jacks comprises base 14, is located at outer cylinder body 1, first inner cylinder body 4 and second inner cylinder body 5 on the base 14, outer cylinder body 1, first inner cylinder body 4, the coaxial setting of second inner cylinder body, 5 threes.First inner cylinder body 4 is plugged in the outer cylinder body 1, and first inner cylinder body 4 is separated into exocoel 2 and following exocoel 12 to outer cylinder body 1 inside.Second inner cylinder body 5 is plugged in first inner cylinder body 4, and second inner cylinder body 5 is separated into lumen 7 and following lumen 9 to the inside of first inner cylinder body 4.Second inner cylinder body 5 can stretch out in first inner cylinder body 4, and first inner cylinder body 4 can be from outer cylinder body 1 interior stretching out.
Outer cylinder body 1 is captiveed joint with base 14, and the upper oral part of outer cylinder body 1 is provided with interior to bulge loop.Be connected with first cylinder table in the bottom of first inner cylinder body 4, the diameter of first cylinder table is greater than the diameter of first inner cylinder body 4, and liquid sealing cooperates between the inner peripheral surface of the outer peripheral face of first cylinder table and outer cylinder body 1, and first cylinder table can endwisely slip in outer cylinder body 1.Be less than the external diameter of first cylinder table to the internal diameter of bulge loop in outer cylinder body 1 upper oral part is set, the outer peripheral face of first inner cylinder body 4 with should be interior between the inner peripheral surface of bulge loop liquid sealing cooperate.
The bottom of second inner cylinder body 5 is provided with second cylinder table, in the upper oral part of first inner cylinder body 4 is provided with to bulge loop, the diameter of second cylinder table is greater than this interior internal diameter to bulge loop, second inner cylinder body 5 is plugged in this in bulge loop, and the outer peripheral face of second inner cylinder body 5 with should interior between the inner peripheral surface of bulge loop, cooperate for liquid sealing.
Be provided with first oil inlet 11 on outer cylinder body 1, the following exocoel 12 in this first oil inlet 11 and the outer cylinder body 1 communicates, and first oil inlet 11 communicates with oil pump and fuel tank.Be provided with penetrating oilhole 13 on above-mentioned first cylinder table, oilhole 13 is linked up described exocoel 12 and above-mentioned following lumen 9 down.Hydraulic oil enters into down in the lumen 9 by oilhole 13 after entering into down in the exocoel 12 in first oil inlet 11, and and then drives the outside that second inner cylinder body 5 stretches out outer cylinder body 1.Do described when action of stretching out at second inner cylinder body 5, second inner cylinder body 5 can drive first inner cylinder body 4 do the same action of stretching out.
Be provided with second oil inlet, 8, the second oil inlets 8 and also communicate with fuel tank and oil pump on outer cylinder body 1, fuel tank, oil pump are connected between first oil inlet 11 and second oil inlet 8.Last exocoel 2 in second oil inlet 8 and the outer cylinder body 1 communicates, and second oil inlet 8 communicates with oil circuit, and described oil circuit leads in the interior last lumen 7 of above-mentioned first inner cylinder body 4.
Be provided with oil duct 10 in set first cylinder table in above-mentioned first inner cylinder body 4 bottoms, this oil duct 10 is " Qian " shape.The oil inlet of oil duct 10 is towards following exocoel 12, and the oil outlet of oil duct 10 is towards following lumen 9.Erectly be provided with the standpipe 6 of hard in the oil outlet position of oil duct 10, standpipe 6 passes second cylinder table from the center position of second cylinder table and extend in second inner cylinder body 5.Distance on the upper end of standpipe 6 and first inner cylinder body 4 between the infraoral of bulge loop is less than the thickness of second cylinder table, when the lower surface of bulge loop fitted, standpipe 6 still can be connected with second cylinder table on the upper surface of second cylinder table and first inner cylinder body 4.Be the liquid sealing bearing fit between the standpipe 6 and second cylinder table, for guaranteeing liquid sealing between the two, be provided with the seal ring 15 of annular on second cylinder table, seal ring 15 is socketed on the outer peripheral face of standpipe 6.Be provided with open-work 3 on the wall body of second inner cylinder body 5, this open-work 3 is linked up the inside of second inner cylinder body 5 and the last lumen 7 in first inner cylinder body 4.Described oil duct 10, standpipe 6 and open-work 3 constitute the part of described oil circuit.
When making inner cylinder body be retracted in the outer cylinder body 1, hydraulic oil enters exocoel 2, oil duct 10, standpipe 6, the inside of second inner cylinder body 5, oilhole 13 successively in second oil inlet 8, enters at last in the lumen 7, and this hydraulic oil drives second inner cylinder body, 5 retractions.Meanwhile, the hydraulic oil in the last lumen 7 and is back in the fuel tank from first oil inlet 11 in oilhole 13 enters down exocoel 12.When inner cylinder body did to stretch out outer cylinder body 1 action under the driving of hydraulic oil, the hydraulic oil in the last lumen 7 entered into the inside of second inner cylinder body 5 by open-work 3, and is back in the fuel tank from standpipe 6, oil duct 10, last exocoel 2, second oil inlet 8 successively.
Claims (6)
1. three grades of hydraulic electric jacks, comprise the outer cylinder body that connects together coaxially, first inner cylinder body and second inner cylinder body, first inner cylinder body is separated into exocoel and following exocoel to outer cylinder body inside, second inner cylinder body is separated into lumen and following lumen to the inside of first inner cylinder body, outer cylinder body is fixed on the base, on outer cylinder body, be provided with and lead to first oil inlet of exocoel down, first oil inlet communicates with oil pump and fuel tank, it is characterized in that, described outer cylinder body (1) is provided with second oil inlet (8) that communicates with fuel tank, and second oil inlet (8) communicates with the described lumen (7) of going up by oil circuit.
2. three grades of hydraulic electric jacks according to claim 1 is characterized in that, described oil pump is connected between first oil inlet (11) and second oil inlet (8).
3. three grades of hydraulic electric jacks according to claim 1 and 2 is characterized in that, are provided with first cylinder table in the bottom of first inner cylinder body (4), and the outer peripheral face of first cylinder table cooperates with outer cylinder body (1) inner peripheral surface liquid sealing; The bottom of second inner cylinder body (5) is provided with second cylinder table, and liquid sealing cooperates between the second cylinder table outer peripheral face and first inner cylinder body (4) inner peripheral surface; Be provided with oil duct (10) in the inside of first cylinder table, this oil duct (10) constitutes the part of described oil circuit; Be provided with penetrating oilhole (13) on first cylinder table, oilhole (13) is linked up exocoel (12) and following lumen (9) down.
4. three grades of hydraulic electric jacks according to claim 3 is characterized in that described oil duct (10) is " Qian " shape.
5. three grades of hydraulic electric jacks according to claim 3, it is characterized in that, export department in oil duct (10) on described first cylinder table is provided with standpipe (6) vertically, standpipe (6) constitutes the part of described oil circuit, standpipe (6) passes second cylinder table and communicates with last lumen (7), is the liquid sealing bearing fit between the standpipe (6) and second cylinder table; Standpipe (6) upper end is to the thickness of the distance between the infraoral of first inner cylinder body (4) upper end less than second cylinder table.
6. three grades of hydraulic electric jacks according to claim 5, it is characterized in that, described standpipe (6) extend in second inner cylinder body (5) from the center position of second cylinder table, be provided with open-work (3) on the wall body of second inner cylinder body (5), this open-work (3) is linked up the inner and described lumen (7) of going up of second inner cylinder body (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200165985U CN201971589U (en) | 2011-01-19 | 2011-01-19 | Triplex electro-hydraulic jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200165985U CN201971589U (en) | 2011-01-19 | 2011-01-19 | Triplex electro-hydraulic jack |
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| Publication Number | Publication Date |
|---|---|
| CN201971589U true CN201971589U (en) | 2011-09-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200165985U Expired - Fee Related CN201971589U (en) | 2011-01-19 | 2011-01-19 | Triplex electro-hydraulic jack |
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| Country | Link |
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| CN (1) | CN201971589U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104692281A (en) * | 2015-03-30 | 2015-06-10 | 上海市城市建设设计研究总院 | Three-stage double-acting self-fitting hydraulic jack |
| CN107738967A (en) * | 2016-11-25 | 2018-02-27 | 重庆键英液压机电有限公司 | Lowering or hoisting gear and its control method based on multistage hydraulic cylinder |
| CN108275601A (en) * | 2018-03-14 | 2018-07-13 | 浙江耀欧汽车零部件有限公司 | A kind of recreational vehicle electric jack stand with assistant reinforcement muscle structure |
| CN111017783A (en) * | 2019-11-14 | 2020-04-17 | 武汉船舶通信研究所（中国船舶重工集团公司第七二二研究所） | Hydraulic lifting device |
| CN113323400A (en) * | 2021-05-24 | 2021-08-31 | 合肥工业大学 | Concrete vibrating device and using method thereof |
-
2011
- 2011-01-19 CN CN2011200165985U patent/CN201971589U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104692281A (en) * | 2015-03-30 | 2015-06-10 | 上海市城市建设设计研究总院 | Three-stage double-acting self-fitting hydraulic jack |
| CN104692281B (en) * | 2015-03-30 | 2017-04-26 | 上海市城市建设设计研究总院（集团）有限公司 | Three-stage double-acting self-fitting hydraulic jack |
| CN107738967A (en) * | 2016-11-25 | 2018-02-27 | 重庆键英液压机电有限公司 | Lowering or hoisting gear and its control method based on multistage hydraulic cylinder |
| CN108275601A (en) * | 2018-03-14 | 2018-07-13 | 浙江耀欧汽车零部件有限公司 | A kind of recreational vehicle electric jack stand with assistant reinforcement muscle structure |
| CN108275601B (en) * | 2018-03-14 | 2020-04-14 | 浙江耀欧汽车零部件有限公司 | Car as a house electric jack support with supplementary strengthening rib structure |
| CN111017783A (en) * | 2019-11-14 | 2020-04-17 | 武汉船舶通信研究所（中国船舶重工集团公司第七二二研究所） | Hydraulic lifting device |
| CN111017783B (en) * | 2019-11-14 | 2022-04-15 | 武汉船舶通信研究所（中国船舶重工集团公司第七二二研究所） | Hydraulic lifting device |
| CN113323400A (en) * | 2021-05-24 | 2021-08-31 | 合肥工业大学 | Concrete vibrating device and using method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110914 Termination date: 20120119 |