CN104100594A - Composite oblique cone self-locking hydraulic oil cylinder - Google Patents
Composite oblique cone self-locking hydraulic oil cylinder Download PDFInfo
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- CN104100594A CN104100594A CN201410316623.XA CN201410316623A CN104100594A CN 104100594 A CN104100594 A CN 104100594A CN 201410316623 A CN201410316623 A CN 201410316623A CN 104100594 A CN104100594 A CN 104100594A
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Abstract
The invention discloses a composite oblique cone self-locking hydraulic oil cylinder, relates to the technical field of hydraulic power equipment, and solves the technical problems that an existing oil cylinder is poor in locking reliability and low in output force. The oil cylinder comprises a cylinder barrel, a main piston and an auxiliary piston. A positioning cavity is fixed at the right end of the cylinder barrel. A wedge is fixed in the positioning cavity. An annular movable plate is disposed in the positioning cavity. The movable plate is combined with the wedge in a wedged manner through an outer conical face. The main piston is mounted in the inner cavity of the cylinder barrel. The right part of the main piston penetrates the center of the annular movable plate. The outer peripheral face of the main piston is in friction fit with the inner ring of the movable plate. The main piston is provided with an auxiliary cavity. The auxiliary piston is mounted in the auxiliary cavity and separates the auxiliary cavity into a left sub-cavity and a right sub-cavity. The left end of the auxiliary piston penetrates the left-end cavity wall of the auxiliary cavity to extend into a rodless cavity. The right sub-cavity of the auxiliary cavity is communicated with the rodless cavity of the cylinder barrel through a shaft hole in the auxiliary piston. The oil cylinder is reliable in locking and high in output force.
Description
Technical field
The present invention relates to hydraulic power unit technology, particularly relate to a kind of technology of combined type oblique cone self-locking hydraulic oil cylinder.
Background technique
Hydraulic jack is the equipment by hydraulic driving outputting power, mainly formed by cylinder barrel and piston, and the inner chamber integrated sealing of cylinder barrel, piston is arranged in inner cavity of cylinder with sliding matching mode, and inner cavity of cylinder is separated into two active chambers by piston.When hydraulic jack work, one of them active chamber oil-feed, another work oil return, can promote piston and slide, thus outputting power.
When hydraulic jack work, in order to ensure the work safety of hydraulic jack, all need on the oil inlet and oil return hydraulic pipe line of hydraulic jack, configure hydrovalve locks hydraulic jack conventionally, to ensure that hydraulic jack can be because of system failure unstability.But the mode that this employing hydrovalve locks hydraulic jack is higher to the required precision of hydrovalve, and exists in the spool of hydrovalve and relate to, cannot realize the absolute locking to hydraulic jack, exist the defect of locking poor reliability.
In addition, the ouput force of existing hydraulic jack is relatively low, under the operating mode of ouput force being had relatively high expectations at some (such as civil engineering foundation pit construction), often need multiple hydraulic jacks outputting power simultaneously that cooperatively interacts, therefore the ouput force of existing hydraulic jack need to improve.
Summary of the invention
For the defect existing in above-mentioned prior art, it is high that technical problem to be solved by this invention is to provide a kind of locking reliability, and the high combined type oblique cone self-locking hydraulic oil cylinder of ouput force.
In order to solve the problems of the technologies described above, a kind of combined type oblique cone self-locking hydraulic oil cylinder provided by the present invention, comprise cylinder barrel and piston, the two ends, left and right of described cylinder barrel are respectively sealed by a cylinder cap, it is characterized in that: described piston has two, one of them piston is main piston, and another piston is sub-piston;
Described main piston is arranged in inner cavity of cylinder with sliding matching mode, and inner cavity of cylinder is separated into each separate sub-chamber around, and left sub-chamber is wherein rodless cavity, and right sub-chamber is wherein rod chamber;
On the barrel of described cylinder barrel, offer two actuator ports, one of them actuator port is communicated with rodless cavity, and another actuator port is communicated with rod chamber;
The right-hand member of described cylinder barrel is fixed with a location cavity, and the inner chamber of this location cavity and the inner chamber of cylinder barrel cut off mutually, is provided with the movable disk of an annular in the inner chamber of location cavity;
Described main piston is cylinder-piston, the right part of main piston runs through right cylinder cap and the location cavity of cylinder barrel to the right, and pass from the ring heart of movable disk with movable fit system, the inner ring frictional fit of the outer circumferential face of main piston and movable disk, the connecting part of the connecting part of main piston and the right cylinder cap of cylinder barrel and main piston and positioning chamber body lumen wall is all slidably matched and hermetic seal;
In the cavity of described location, be fixed with multiple voussoirs of laying around main piston axisymmetric, described movable disk is arranged in the cavity of location with sliding matching mode, and the inner chamber of location cavity is separated into each separate sub-chamber around, the left sub-chamber integrally closed of location cavity, and on the chamber wall of location cavity, offer the control port that is communicated with its left sub-chamber, the outer ring of movable disk is formed with the conical surface, and the conical surface of movable disk outer ring is with movable fit system and the wedge surface wedging one by one of locating each voussoir in cavity, in the cavity of location, be provided with the spring that is tight against each voussoir for ordering about movable disk,
Described main piston has the cylindrical cavity of an and integrally closed coaxial with it, this cylindrical cavity is compensated cavity, described sub-piston is arranged in compensated cavity with sliding matching mode, and compensated cavity is separated into each separate sub-chamber around, the left end of sub-piston stretches into the rodless cavity of cylinder barrel through the left end chamber wall of compensated cavity, the connecting part of sub-piston and main piston is slidably matched and hermetic seal, on sub-piston, there is an axis hole axially connecting, axis hole on left sub-chamber and the sub-piston of compensated cavity cuts off mutually, the right sub-chamber of compensated cavity is communicated with the rodless cavity of cylinder barrel by the axis hole on sub-piston.
Combined type oblique cone self-locking hydraulic oil cylinder provided by the invention, that utilizes movable disk and voussoir coordinates to change the surface friction drag of movable disk inner ring to main piston, main piston can be locked reliably, utilize sub-piston to produce a compound thrust to main piston, the ouput force of main piston is further promoted, in the situation that oil cylinder working-pressure is constant, existing single ram cylinder that the ouput force of main piston is compared same specification can increase by 60% left and right, has the advantages that locking reliability is high and ouput force is high.
Brief description of the drawings
Fig. 1 is that the master of the combined type oblique cone self-locking hydraulic oil cylinder of the embodiment of the present invention looks cut away view.
Embodiment
Below in conjunction with brief description of the drawings, embodiments of the invention are described in further detail, but the present embodiment is not limited to the present invention, every employing analog structure of the present invention and similar variation thereof, all should list protection scope of the present invention in.
As shown in Figure 1, a kind of combined type oblique cone self-locking hydraulic oil cylinder that the embodiment of the present invention provides, comprise cylinder barrel 1 and piston, the two ends, left and right of described cylinder barrel 1 are respectively sealed by a cylinder cap 4, it is characterized in that: described piston has two, one of them piston is main piston 2, and another piston is sub-piston 3;
Described main piston 2 is arranged in cylinder barrel 1 inner chamber with sliding matching mode, and cylinder barrel 1 inner chamber is separated into each separate sub-chamber around, and left sub-chamber is wherein rodless cavity 11, and right sub-chamber is wherein rod chamber 12;
On the barrel of described cylinder barrel 1, offer two actuator ports, one of them actuator port is communicated with rodless cavity 11, and another actuator port is communicated with rod chamber 12;
The right-hand member of described cylinder barrel 1 is fixed with a location cavity 5, and the inner chamber of the inner chamber of this location cavity 5 and cylinder barrel 1 cuts off mutually, is provided with the movable disk 6 of an annular in the inner chamber of location cavity 5;
Described main piston 2 is cylinder-piston, the right part of main piston 2 runs through right cylinder cap 4 and the location cavity 5 of cylinder barrel to the right, and pass from the ring heart of movable disk 6 with movable fit system, the inner ring frictional fit of the outer circumferential face of main piston 2 and movable disk 6, main piston 2 is all slidably matched and hermetic seal with the connecting part of the right cylinder cap 4 of cylinder barrel and the connecting part of main piston and location cavity 5 chamber walls;
In described location cavity 5, be fixed with multiple voussoirs 7 of laying around main piston 2 axisymmetric, described movable disk 6 is arranged in the cavity 5 of location with sliding matching mode, and the inner chamber of location cavity 5 is separated into each separate sub-chamber around, the left sub-chamber integrally closed of location cavity 5, and on the chamber wall of location cavity 5, offer the control port that is communicated with its left sub-chamber, the outer ring of movable disk 6 is formed with the conical surface, and the conical surface of movable disk 6 outer rings is with movable fit system and the wedge surface wedging one by one of locating each voussoir 7 in cavity, in the cavity 5 of location, be provided with the spring 8 that is tight against each voussoir 7 for ordering about movable disk 6,
Described main piston 2 has the cylindrical cavity of an and integrally closed coaxial with it, this cylindrical cavity is compensated cavity 21, described sub-piston 3 is arranged in compensated cavity 21 with sliding matching mode, and compensated cavity 21 is separated into each separate sub-chamber around, the left end of sub-piston 3 stretches into the rodless cavity 11 of cylinder barrel through the left end chamber wall of compensated cavity 21, sub-piston 3 is slidably matched and hermetic seal with the connecting part of main piston 2, on sub-piston 3, there is an axis hole 31 axially connecting, axis hole 31 on left sub-chamber and the sub-piston of compensated cavity 21 cuts off mutually, the right sub-chamber of compensated cavity 21 is communicated with the rodless cavity 11 of cylinder barrel by the axis hole 31 on sub-piston.
The working principle of the embodiment of the present invention is as follows:
By the control port on the cavity of location, pressure oil is injected to the left sub-chamber of location cavity, the elastic force that can utilize pressure oil promotion movable disk to overcome spring moves to right, make the conical surface and each voussoir of movable disk outer ring depart from wedging, now movable disk is less to the surface friction drag of main piston, and main piston is in released state;
Pressure oil in the left sub-chamber of cavity, location is discharged, movable disk can move to left in the elastic force effect of spring, make the conical surface and each voussoir of movable disk outer ring recover wedging, now under the ejection of spring, each voussoir produces an ejection force towards main piston direction to movable disk, surface friction drag between movable disk and main piston is increased, thereby main piston is locked;
At main piston under released state, the actuator port of rod chamber side is connected to oil returning tube, pressure oil is injected to rodless cavity by the actuator port of rodless cavity side, can promote main piston slides to the right, main piston is stretched out to the right, meanwhile, pressure oil in rodless cavity enters the right sub-chamber of compensated cavity by the axis hole on sub-piston, thereby main piston is produced to a compound thrust, the ouput force of main piston is further promoted, in the situation that oil cylinder working-pressure is constant, existing single ram cylinder that the ouput force of main piston is compared same specification can increase by 60% left and right, main piston puts in place and the pressure oil in the left sub-chamber of cavity, location can be discharged, make it be locked in working position,
Under released state, the actuator port of rodless cavity side is connected to oil returning tube at main piston, pressure oil is injected to rod chamber by the actuator port of rod chamber side, can promote main piston and slide left, main piston is retracted left.
Claims (1)
1. a combined type oblique cone self-locking hydraulic oil cylinder, comprises cylinder barrel and piston, and the two ends, left and right of described cylinder barrel are respectively sealed by a cylinder cap, it is characterized in that: described piston has two, and one of them piston is main piston, and another piston is sub-piston;
Described main piston is arranged in inner cavity of cylinder with sliding matching mode, and inner cavity of cylinder is separated into each separate sub-chamber around, and left sub-chamber is wherein rodless cavity, and right sub-chamber is wherein rod chamber;
On the barrel of described cylinder barrel, offer two actuator ports, one of them actuator port is communicated with rodless cavity, and another actuator port is communicated with rod chamber;
The right-hand member of described cylinder barrel is fixed with a location cavity, and the inner chamber of this location cavity and the inner chamber of cylinder barrel cut off mutually, is provided with the movable disk of an annular in the inner chamber of location cavity;
Described main piston is cylinder-piston, the right part of main piston runs through right cylinder cap and the location cavity of cylinder barrel to the right, and pass from the ring heart of movable disk with movable fit system, the inner ring frictional fit of the outer circumferential face of main piston and movable disk, the connecting part of the connecting part of main piston and the right cylinder cap of cylinder barrel and main piston and positioning chamber body lumen wall is all slidably matched and hermetic seal;
In the cavity of described location, be fixed with multiple voussoirs of laying around main piston axisymmetric, described movable disk is arranged in the cavity of location with sliding matching mode, and the inner chamber of location cavity is separated into each separate sub-chamber around, the left sub-chamber integrally closed of location cavity, and on the chamber wall of location cavity, offer the control port that is communicated with its left sub-chamber, the outer ring of movable disk is formed with the conical surface, and the conical surface of movable disk outer ring is with movable fit system and the wedge surface wedging one by one of locating each voussoir in cavity, in the cavity of location, be provided with the spring that is tight against each voussoir for ordering about movable disk,
Described main piston has the cylindrical cavity of an and integrally closed coaxial with it, this cylindrical cavity is compensated cavity, described sub-piston is arranged in compensated cavity with sliding matching mode, and compensated cavity is separated into each separate sub-chamber around, the left end of sub-piston stretches into the rodless cavity of cylinder barrel through the left end chamber wall of compensated cavity, the connecting part of sub-piston and main piston is slidably matched and hermetic seal, on sub-piston, there is an axis hole axially connecting, axis hole on left sub-chamber and the sub-piston of compensated cavity cuts off mutually, the right sub-chamber of compensated cavity is communicated with the rodless cavity of cylinder barrel by the axis hole on sub-piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410316623.XA CN104100594A (en) | 2014-07-06 | 2014-07-06 | Composite oblique cone self-locking hydraulic oil cylinder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410316623.XA CN104100594A (en) | 2014-07-06 | 2014-07-06 | Composite oblique cone self-locking hydraulic oil cylinder |
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| CN104100594A true CN104100594A (en) | 2014-10-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410316623.XA Pending CN104100594A (en) | 2014-07-06 | 2014-07-06 | Composite oblique cone self-locking hydraulic oil cylinder |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106555787A (en) * | 2016-11-16 | 2017-04-05 | 上海建工集团股份有限公司 | A kind of wedge structure hydraulic pressure support displacement control system and its using method |
| CN108518381A (en) * | 2018-06-11 | 2018-09-11 | 江苏万川高压电气有限公司 | A kind of tight boosting hydraulic cylinder of servo-actuated self-locking |
| CN111456979A (en) * | 2020-05-07 | 2020-07-28 | 上海中联重科桩工机械有限公司 | Piston cylinder |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6343538B1 (en) * | 1995-08-03 | 2002-02-05 | Frank Raymond Skinner | Multiposition self-locking cylinder |
| CN202381449U (en) * | 2011-12-21 | 2012-08-15 | 徐州重型机械有限公司 | Hydraulic cylinder, hydraulic system and engineering machinery |
| CN202811639U (en) * | 2012-09-14 | 2013-03-20 | 泸州市巨力液压有限公司 | Random displacement locking cylinder |
| CN203570738U (en) * | 2013-07-23 | 2014-04-30 | 云南兴长江实业有限公司 | Double-action high-pull output hydraulic oil cylinder |
| CN204082753U (en) * | 2014-07-06 | 2015-01-07 | 上海宏信设备工程有限公司 | Combined type oblique cone self-locking hydraulic oil cylinder |
-
2014
- 2014-07-06 CN CN201410316623.XA patent/CN104100594A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6343538B1 (en) * | 1995-08-03 | 2002-02-05 | Frank Raymond Skinner | Multiposition self-locking cylinder |
| CN202381449U (en) * | 2011-12-21 | 2012-08-15 | 徐州重型机械有限公司 | Hydraulic cylinder, hydraulic system and engineering machinery |
| CN202811639U (en) * | 2012-09-14 | 2013-03-20 | 泸州市巨力液压有限公司 | Random displacement locking cylinder |
| CN203570738U (en) * | 2013-07-23 | 2014-04-30 | 云南兴长江实业有限公司 | Double-action high-pull output hydraulic oil cylinder |
| CN204082753U (en) * | 2014-07-06 | 2015-01-07 | 上海宏信设备工程有限公司 | Combined type oblique cone self-locking hydraulic oil cylinder |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106555787A (en) * | 2016-11-16 | 2017-04-05 | 上海建工集团股份有限公司 | A kind of wedge structure hydraulic pressure support displacement control system and its using method |
| CN108518381A (en) * | 2018-06-11 | 2018-09-11 | 江苏万川高压电气有限公司 | A kind of tight boosting hydraulic cylinder of servo-actuated self-locking |
| CN108518381B (en) * | 2018-06-11 | 2019-09-27 | 江苏万川液压机械设备有限公司 | A kind of tight boosting hydraulic cylinder of servo-actuated self-locking |
| CN111456979A (en) * | 2020-05-07 | 2020-07-28 | 上海中联重科桩工机械有限公司 | Piston cylinder |
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Application publication date: 20141015 |