CN204828128U - Low friction without spin perpendicular nonoculture with servo multistage telescoping cylinder - Google Patents
Low friction without spin perpendicular nonoculture with servo multistage telescoping cylinder Download PDFInfo
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- CN204828128U CN204828128U CN201520609342.3U CN201520609342U CN204828128U CN 204828128 U CN204828128 U CN 204828128U CN 201520609342 U CN201520609342 U CN 201520609342U CN 204828128 U CN204828128 U CN 204828128U
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Abstract
The utility model discloses a low friction without spin perpendicular nonoculture with servo multistage telescoping cylinder, including end jar, be equipped with in proper order first order cylinder, intermediate stage cylinder and final stage cylinder that cover was established in the cylinder of end jar, to release cylinders at different levels step by step through the piston of setting in cylinders at different levels, the piston of every grade of cylinder all is equipped with the fluid bearing between rather than preceding one -level cylinder inner wall, is fixed with the stand on the inner wall on final stage cylinder top, is equipped with the fluid bearing between the lateral wall on stand and final stage cylinder upper portion. This multistage jar can prevent effectively that the final stage cylinder from causing the frictional resistance increase because of the too big emergence of bearing capacity skew.
Description
Technical field
The utility model relates to a kind of oil hydraulic cylinder, the low friction vertical single-acting servo multi-stage expansion cylinder without spin of particularly a kind of applicable employing electrohydraulic servo system control.
Background technique
At present, single-acting Multi-stage cylinder engineering mechanical device is used widely is all according to meeting the design of engineering equipment actual operation requirements.This kind of engineering cylinder, because its surface friction drag is comparatively large, stroke is fixed, can not meet the adjustable height scouted on staff car and can be in harmonious proportion arbitrarily the particular/special requirements such as the correct and rotation angle restriction in location.Therefore, electro-hydraulic servo telescopic cylinder scheme can only be adopted to solve, namely design a kind of at right angle setting single-acting servo telescopic cylinder according to electro-hydraulic servo control elevating system task particular/special requirement.
But, existing engineering Multi-stage cylinder can not be used at electrohydraulic servo system, its main cause is: because engineering Multi-stage cylinder surface friction drag is large, every grade of cylinder stroke is fixed, so how to accomplish under automatically controlled, during work, smooth and easy, adjustable height can be in harmonious proportion positioning stablity back and forth up and down, and key technology will accomplish that surface friction drag is very little, makes electro-hydraulic servo telescopic cylinder much smaller more than engineering telescopic cylinder surface friction drag.If electro-hydraulic servo telescopic cylinder surface friction drag is large, the light then cylinder of its result there will be creeping phenomenon at the volley, and cylinder adjustable height is forbidden, and location is unstable, does not reach usage requirement; Heavy then, cylinder decline time by load weight and deadweight can not overcome cylinder surface friction drag and be stuck.
The structural feature of multistage hydraulic cylinder is the cylinder barrel that every grade of cylinder barrel inner sleeve has less level cylinder, and for six grades of oil hydraulic cylinders, the cylinder barrel of first order cylinder is fixing; The piston rod of minimum 6th grade of cylinder stretches out completely.The piston end bearing that during work, every one-level is retractable to rare two cylinders plays a supportive role, and one is the piston end bearing of flexible level cylinder; Another is the piston end bearing of next flexible level cylinder, stretches out level by the moment produced under the eccentric load of weight and load and external wind effect to resist.(during as level V cylinder working, one is the piston end bearing of level V cylinder, and another is that the piston end bearing of the 6th grade of cylinder jointly plays a supportive role to resist and stretches out level by the moment produced under the eccentric load of weight and load and external wind effect.) radial force of moment makes two piston end bearing places produce surface friction drag, if oil cylinder rigidity is inadequate, certain amount of deflection can be produced, and increase the surface friction drag of cylinder.And for the 6th grade, top cylinder, only have a piston end bearing to stay cylinder barrel inner support the 6th grade of cylinder of the 6th grade of cylinder.When the piston rod of the 6th grade of cylinder all stretches out, can form a load has the elongated vertical of 250kg to lift arm, during cylinder efficient, under the radial force and wind-force effect of deadweight, load eccentric load, the amount of deflection that the piston rod of the 6th grade of cylinder causes usually flexible level more each than other is large, adds oil hydraulic cylinder surface friction drag.
In addition, the coaxality of every first-stage cylinder, perpendicularity when installing, the seal operation of oil hydraulic cylinder, the mechanical property etc. of material itself all can have an impact to the surface friction drag of oil hydraulic cylinder.
Model utility content
The purpose of this utility model is to provide a kind of low friction vertical single-acting servo multi-stage expansion cylinder without spin.
To achieve these goals, the low friction of the one that the utility model provides is vertical single-acting servo multi-stage expansion cylinder without spin, comprise end cylinder, first order cylinder barrel is provided with in the cylinder barrel of end cylinder, the first order piston that first order cylinder barrel can be driven to move is provided with in first order cylinder barrel, the cylinder barrel end of end cylinder is provided with the end cylinder end cap of restriction first order cylinder barrel displacement, at least one-level intergrade cylinder barrel is provided with in first order cylinder barrel, every grade of intergrade cylinder barrel is all arranged in its previous stage cylinder barrel, the intergrade piston that can drive this grade of intergrade cylinder barrel motion is equipped with in every grade of intergrade cylinder barrel, the previous stage cylinder barrel end of every grade of intergrade cylinder barrel is all provided with intergrade end cap, for limiting the displacement of every grade of intergrade cylinder barrel, final stage cylinder barrel is provided with in afterbody intergrade cylinder barrel, first order cylinder barrel, intergrade cylinder barrel is communicated with to final stage cylinder barrel head and the tail, the final stage piston that final stage cylinder barrel can be driven to move is provided with in final stage cylinder barrel, afterbody intergrade cylinder barrel end is provided with final stage end cap, for limiting the displacement of final stage cylinder barrel, fluid bearing is equipped with between the piston of every grade of cylinder barrel and its previous stage inner wall of cylinder, the inwall on final stage cylinder barrel top is fixed with column, fluid bearing is provided with between the sidewall on column and final stage cylinder barrel top.
Preferably, described first order piston, intergrade piston and final stage piston all with it each self-corresponding inner wall of cylinder one-body molded.
Further, formation flange is all radially stretched out towards outside in the two ends of described first order piston, intergrade piston, final stage piston, and cylinder end cap of the described end, intergrade end cap, final stage end cap limit the displacement of cylinder barrel at different levels by blocking described flange.
Preferably, the means of fixation of described column arranges groove in the top inner wall of final stage cylinder barrel, and column top to be inserted in groove and is fixed on the upper wall of groove, and fluid bearing is arranged between recess sidewall and post end side.
Preferably, positioning hole is offered at the cylinder bottom plate center, the end of cylinder bottom, the described end, for assembling to center pillar, all offers and assemble for center pillar with the seam of positioning hole coaxial line bottom the cylinder barrel of end cylinder, first order cylinder barrel, intergrade cylinder barrel.
Preferably, be provided with first order limit in end cylinder and reverse post, one end that first order limit reverses post is fixed on end cylinder bottom end, the other end passes from the body of first order piston, from first order piston, be equipped with intergrade limit between adjacent two-stage piston and reverse post, one end that intergrade limit reverses post is fixed on the piston of previous stage cylinder barrel, and the other end passes from the piston only of rear stage cylinder barrel.
Further, described first order limit is reversed post and intergrade limit and is reversed post all axle is circumferentially centered by the axis of cylinder barrel.
Preferably, the quantity of described intergrade cylinder barrel is 4.
Preferably, every grade of cylinder barrel stretch out completely after overall length be 11000mm
The low friction that the utility model provides is vertical single-acting servo multi-stage expansion cylinder without spin, column is adopted to be arranged in final stage cylinder barrel, fluid bearing is provided with between the sidewall on final stage cylinder barrel top, with the fluid bearing outside final stage piston with the use of rear, define final stage cylinder barrel (plunger rod) two end supports, firm stable, prevents final stage cylinder barrel from causing surface friction drag to increase because of the excessive generation skew of bearing capacity.
Accompanying drawing explanation
Fig. 1 is the sectional view of low friction provided by the utility model vertical single-acting servo multi-stage expansion cylinder without spin.
Embodiment
In order to make those skilled in the art person understand the utility model scheme better, below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Please refer to Fig. 1, the utility model is 4 (namely altogether forming 6 grades of cylinders) for the quantity of intergrade cylinder barrel, provides a kind of low friction vertical single-acting servo multi-stage expansion cylinder without spin.Wherein in order to reduce accompanying drawing length, all adopting in every grade of oil hydraulic cylinder and blocking the technique of painting.
This low friction without spin vertical single-acting servo multi-stage expansion cylinder comprises end cylinder 11, it is end cylinder bottom plate 12 bottom end cylinder 11, fixed by connecting plate 17 and bolt and keep motionless, first order cylinder barrel 1 is provided with in the cylinder barrel of end cylinder 11, the integrated first order piston 2 with inner wall of cylinder is extended to form to the inside bottom first order cylinder barrel 1, the cylinder barrel end of end cylinder 11 is provided with end cylinder end cap 3, the upper surface of end cylinder end cap 3 extends to form the baffle plate of annular to the inside, formation flange is radially stretched out towards outside in the top of first order piston 2, baffle plate is used for blocking described flange, thus restriction first order cylinder barrel 1 continues to move up, at least level Four intergrade cylinder barrel 4 is provided with in first order cylinder barrel 1, every grade of intergrade cylinder barrel 4 is all arranged in its previous stage cylinder barrel, namely second level cylinder barrel is arranged in first order cylinder barrel, third level cylinder barrel is arranged in the cylinder barrel of the second level, fourth stage cylinder barrel is arranged in third level cylinder barrel, level V cylinder barrel is arranged in fourth stage cylinder barrel, as first order cylinder barrel 1, intergrade piston 5 integrated with intergrade cylinder barrel 4 inwall is equipped with in bottom every grade of intergrade cylinder barrel 4, the previous stage cylinder barrel end of every grade of intergrade cylinder barrel 4 is all provided with intergrade end cap 6, extend to form baffle plate to the inside too, to shelter from formation is radially stretched out on each intergrade piston 5 top flange towards outside, thus limit the displacement of every grade of intergrade cylinder barrel 4, final stage cylinder barrel 7 is provided with in afterbody intergrade cylinder barrel 4, namely the 6th grade of cylinder barrel is arranged in level V cylinder barrel, final stage cylinder barrel 7 top and plunger rod one-body molded, first order cylinder barrel 1, intergrade cylinder barrel 4 to final stage cylinder barrel 7 head and the tail are communicated with, with conducting pressure liquid, similarly, final stage piston 8 integrated with final stage cylinder barrel 7 bottom interior wall is provided with in bottom final stage cylinder barrel 7, afterbody intergrade cylinder barrel 4 end is provided with final stage end cap 9, the baffle plate that end cap extends to form to the inside stretches out the flange of formation for blocking final stage piston 8 top to radially outside, thus the displacement of restriction final stage cylinder barrel 7.Be equipped with fluid bearing 10 between the piston of every grade of cylinder barrel and its previous stage inner wall of cylinder, the inwall on final stage cylinder barrel 7 top is fixed with column 13, between the sidewall on column 13 and final stage cylinder barrel 7 top, be also provided with fluid bearing 10.Like this, the fluid bearing 10 that pistons at different levels before final stage cylinder can both obtain two ends supports, and for final stage cylinder barrel 7, column 13 is adopted to be arranged in final stage cylinder barrel 7, also be provided with fluid bearing 10 between the sidewall on final stage cylinder barrel 7 top, with the fluid bearing outside final stage piston 8 with the use of rear, also form final stage cylinder barrel 7 (plunger rod) two end supports, firm stable, prevents final stage cylinder barrel 7 from causing surface friction drag to increase because of the excessive generation skew of bearing capacity.
The means of fixation of described column 13 is the grooves arranging annular inner wall in the top inner wall of final stage cylinder barrel 7, and column 13 top to be inserted in groove and is fixed on the upper wall of groove by screw, and fluid bearing 10 is arranged between recess sidewall and column 13 end sides.
Positioning hole 14 is offered at the center of end cylinder bottom plate 12, for assembling to center pillar, all offers and assemble for center pillar with the seam of positioning hole 14 coaxial line bottom the cylinder barrel of end cylinder, first order cylinder barrel 1, intergrade cylinder barrel 4.Give after assembly space is provided to center pillar, the alignment degree of oil hydraulic cylinder at different levels when assembling can be improved better, so just can accomplish that only Sealing has with cylinder barrel directly to contact, and piston and cylinder barrel are without directly contacting, like this when oil hydraulic cylinder is by deadweight and load weight decline, oil hydraulic cylinder can not be there is and to be stuck phenomenon.
Be provided with first order limit in end cylinder 11 and reverse post 15, one end that first order limit reverses post 15 is fixed on end cylinder 11 bottom, the other end passes from the body of first order piston 2, from first order piston 2, be equipped with intergrade limit between adjacent two-stage piston and reverse post 16, one end that intergrade limit reverses post 16 is fixed on the piston of previous stage cylinder barrel, and the other end passes from the piston only of rear stage cylinder barrel.The limit of every one-level reverses post, and all centered by the axis of cylinder barrel, axle is circumferentially.The flow radial shear power that produces of the radial shear power that the radial moment of torsion that can produce due to load center of gravity and oil hydraulic cylinder center decentraction, cylinder surface friction drag at different levels produce, oil hydraulic cylinder internal pressure liquid affects and extraneous wind-force etc. all can cause in oil hydraulic cylinder lifting process and rotates, limit torsion post at different levels can offset the shearing force on piston at different levels, and end cylinder bottom plate motionless bottom being sent to step by step by warping force is eliminated, thus avoid the rotation in oil hydraulic cylinder lifting process.
In addition, owing to overcoming surface friction drag problem and limiting the rotation of oil hydraulic cylinder, the low friction that the utility model provides without spin vertical single-acting servo multi-stage expansion cylinder be more suitable for as the low friction of electro-hydraulic servo without spin vertical single-acting servo multi-stage expansion cylinder use, especially can meet the adjustable height scouted on staff car and can be in harmonious proportion arbitrarily location correctly and the particular/special requirement such as rotation angle restriction.
Six grades of oil hydraulic cylinders that the utility model provides, the overall length Ke Da 11000mm after every grade of cylinder barrel stretches out completely, the overall length after all retracting is no longer than 2000mm.
Above to low friction provided by the utility model without spin vertical single-acting servo multi-stage expansion cylinder be described in detail.Apply specific case herein to set forth principle of the present utility model and mode of execution, the explanation of above embodiment just understands core concept of the present utility model for helping.Should be understood that; for those skilled in the art; under the prerequisite not departing from the utility model principle, can also carry out some improvement and modification to the utility model, these improve and modify and also fall in the protection domain of the utility model claim.
Claims (9)
1. low friction vertical single-acting servo multi-stage expansion cylinder without spin, comprise end cylinder, first order cylinder barrel is provided with in the cylinder barrel of end cylinder, the first order piston that first order cylinder barrel can be driven to move is provided with in first order cylinder barrel, the cylinder barrel end of end cylinder is provided with the end cylinder end cap of restriction first order cylinder barrel displacement, at least one-level intergrade cylinder barrel is provided with in first order cylinder barrel, every grade of intergrade cylinder barrel is all arranged in its previous stage cylinder barrel, the intergrade piston that can drive this grade of intergrade cylinder barrel motion is equipped with in every grade of intergrade cylinder barrel, the previous stage cylinder barrel end of every grade of intergrade cylinder barrel is all provided with intergrade end cap, for limiting the displacement of every grade of intergrade cylinder barrel, final stage cylinder barrel is provided with in afterbody intergrade cylinder barrel, first order cylinder barrel, intergrade cylinder barrel is communicated with to final stage cylinder barrel head and the tail, the final stage piston that final stage cylinder barrel can be driven to move is provided with in final stage cylinder barrel, afterbody intergrade cylinder barrel end is provided with final stage end cap, for limiting the displacement of final stage cylinder barrel, it is characterized in that, fluid bearing is equipped with between the piston of every grade of cylinder barrel and its previous stage inner wall of cylinder, the inwall on final stage cylinder barrel top is fixed with column, fluid bearing is provided with between the sidewall on column and final stage cylinder barrel top.
2. low friction according to claim 1 vertical single-acting servo multi-stage expansion cylinder without spin, is characterized in that, described first order piston, intergrade piston and final stage piston all with it each self-corresponding inner wall of cylinder one-body molded.
3. low friction according to claim 2 vertical single-acting servo multi-stage expansion cylinder without spin, it is characterized in that, formation flange is all radially stretched out towards outside in the two ends of described first order piston, intergrade piston, final stage piston, and cylinder end cap of the described end, intergrade end cap, final stage end cap limit the displacement of cylinder barrel at different levels by blocking described flange.
4. low friction according to claim 1 vertical single-acting servo multi-stage expansion cylinder without spin, it is characterized in that, the means of fixation of described column, that groove is set in the top inner wall of final stage cylinder barrel, column top to be inserted in groove and is fixed on the upper wall of groove, and fluid bearing is arranged between recess sidewall and post end side.
5. low friction according to claim 1 vertical single-acting servo multi-stage expansion cylinder without spin, it is characterized in that, positioning hole is offered at the cylinder bottom plate center, the end of cylinder bottom, the described end, for assembling to center pillar, all offer bottom the cylinder barrel of end cylinder, first order cylinder barrel, intergrade cylinder barrel and assemble for center pillar with the seam of positioning hole coaxial line.
6. low friction according to claim 1 vertical single-acting servo multi-stage expansion cylinder without spin, it is characterized in that, be provided with first order limit in end cylinder and reverse post, one end that first order limit reverses post is fixed on end cylinder bottom end, the other end passes from the body of first order piston, from first order piston, is equipped with intergrade limit and reverses post between adjacent two-stage piston, one end that intergrade limit reverses post is fixed on the piston of previous stage cylinder barrel, and the other end passes from the piston only of rear stage cylinder barrel.
7. low friction according to claim 6 vertical single-acting servo multi-stage expansion cylinder without spin, is characterized in that, described first order limit is reversed post and intergrade limit and reversed post all axle is circumferentially centered by the axis of cylinder barrel.
8. low friction according to claim 1 vertical single-acting servo multi-stage expansion cylinder without spin, it is characterized in that, the quantity of described intergrade cylinder barrel is 4.
9., according to the arbitrary described low friction of claim 1-8 vertical single-acting servo multi-stage expansion cylinder without spin, it is characterized in that, the overall length after every grade of cylinder barrel stretches out completely is 11000mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520609342.3U CN204828128U (en) | 2015-08-13 | 2015-08-13 | Low friction without spin perpendicular nonoculture with servo multistage telescoping cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520609342.3U CN204828128U (en) | 2015-08-13 | 2015-08-13 | Low friction without spin perpendicular nonoculture with servo multistage telescoping cylinder |
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| Publication Number | Publication Date |
|---|---|
| CN204828128U true CN204828128U (en) | 2015-12-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520609342.3U Withdrawn - After Issue CN204828128U (en) | 2015-08-13 | 2015-08-13 | Low friction without spin perpendicular nonoculture with servo multistage telescoping cylinder |
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| Country | Link |
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| CN (1) | CN204828128U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105003487A (en) * | 2015-08-13 | 2015-10-28 | 北京中金泰达电液科技有限公司 | Vertical single-acting servo multi-stage telescopic cylinder with low friction and without rotation |
-
2015
- 2015-08-13 CN CN201520609342.3U patent/CN204828128U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105003487A (en) * | 2015-08-13 | 2015-10-28 | 北京中金泰达电液科技有限公司 | Vertical single-acting servo multi-stage telescopic cylinder with low friction and without rotation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20151202 Effective date of abandoning: 20171114 |
|
| AV01 | Patent right actively abandoned |