CN204591863U - A kind of lifting machine high-precision hydraulic cylinder - Google Patents
A kind of lifting machine high-precision hydraulic cylinder Download PDFInfo
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- CN204591863U CN204591863U CN201520279869.4U CN201520279869U CN204591863U CN 204591863 U CN204591863 U CN 204591863U CN 201520279869 U CN201520279869 U CN 201520279869U CN 204591863 U CN204591863 U CN 204591863U
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Abstract
The utility model discloses a kind of lifting machine high-precision hydraulic cylinder, comprise cylinder bottom, cylinder barrel, cylinder head, cylinder cap and piston rod, the in-built guide sleeve of cylinder head, piston assembly is equipped with guide sleeve, due to the setting of guide ring and guide sleeve, improve the kinematic accuracy of piston rod and piston assembly, cylinder bottom, cylinder barrel, cylinder head, cylinder cap many places are provided with various ways sealing, make this lifting machine high-precision hydraulic cylinder have more reliable sealability, hydraulic fluid leak is few; This lifting machine high-precision hydraulic cylinder has the advantage that sealing is reliable, leakage is high with kinematic accuracy less, can meet the needs of operating mode.
Description
Technical field
The utility model relates to technical field of automobile maintenance, particularly relates to a kind of lifting machine high-precision hydraulic cylinder.
Background technique
Car lift refers to that automobile maintenance industry protects equipment for the vapour of vehicle hoisting.Lifting machine plays vital effect in auto repair maintenance, no matter car load overhaul, or routine maintenance, and all be unable to do without it, its product property, quality directly affect the personal safety of maintenance man.In the maintenance enterprise that scale is different, no matter be the comprehensive repair shop of keeping in repair various, or the shop, curbside that business scope is single, lifting machine is equipped with nearly all.
But the defect that at present, the car lift oil hydraulic cylinder ubiquity kinematic accuracy of prior art is low, the circular runout of piston rod is large, seal unreliable, easy leakage.
Model utility content
For the defect of above-mentioned prior art, the utility model provides a kind of lifting machine high-precision hydraulic cylinder, and this lifting machine high-precision hydraulic cylinder has the advantage that sealing is reliable, leakage is high with kinematic accuracy less, can meet the needs of operating mode.
For achieving the above object, the technological scheme that the utility model adopts is:
A kind of lifting machine high-precision hydraulic cylinder, comprise cylinder barrel, cylinder barrel is built with piston rod, and the head end of cylinder barrel is provided with cylinder head, and the stop portion that described cylinder head matches with cylinder barrel is provided with o RunddichtringO; Cylinder head offers rod chamber hydraulic fluid port, cylinder head center offers cylinder head center hole, has certain interval between the inner hole wall of cylinder head center hole and the periphery wall of piston rod, and rod chamber hydraulic fluid port is communicated with oil hydraulic cylinder rod chamber by cylinder head center hole; The outer end of cylinder head is built with guide sleeve and cylinder cap, described guide sleeve is fitted in cylinder head by cylinder cap, the stop portion that described cylinder cap matches with cylinder head is provided with o RunddichtringO, described cylinder cap opens center hole, the head end of piston rod is slidably matched through the center hole sealing with the center hole of guide sleeve, this cylinder cap of guide sleeve and this cylinder cap, and the center hole inner ring of described cylinder cap is provided with y-type seal ring and dust ring; The tail end of piston rod is provided with piston assembly, and described piston assembly comprises piston, is arranged on the retaining ring of piston both sides, and the perisporium in the middle part of described piston is provided with guide ring, and the perisporium of described piston both sides is provided with Yx seal ring; The tail end of described cylinder barrel is connected with cylinder bottom, and the stop portion that described cylinder bottom matches with cylinder barrel is provided with o RunddichtringO; Cylinder bottom offers rodless cavity hydraulic fluid port, cylinder bottom center offers cylinder bottom center hole, and rodless cavity hydraulic fluid port is communicated with oil hydraulic cylinder rodless cavity by cylinder bottom center hole;
The tail end of described piston rod is equipped with rod end cushion collar and rear end cushion collar, and rod end cushion collar, rear end cushion collar lay respectively at the both sides of piston assembly, and rod end cushion collar is positioned at oil hydraulic cylinder rod chamber, and rear end cushion collar is positioned at oil hydraulic cylinder rodless cavity; The end of described cylinder head center hole forms a peviform buffer cavity; The end of described cylinder bottom center hole forms a cylinder bottom buffer cavity; Cylinder head and cylinder bottom are respectively arranged with cylinder head trimmer valve and cylinder bottom trimmer valve.
Lifting machine high-precision hydraulic cylinder of the present utility model, due to the setting of guide ring and guide sleeve, improve the kinematic accuracy of piston rod and piston assembly, cylinder bottom, cylinder barrel, cylinder head, cylinder cap many places are provided with various ways sealing, make this lifting machine high-precision hydraulic cylinder have more reliable sealability, hydraulic fluid leak is few; The setting of rod end cushion collar and rear end cushion collar, cylinder head trimmer valve and cylinder bottom trimmer valve changes flow area when rod chamber and rodless cavity oil return, and define certain back pressure, slowed down the travelling speed of piston assembly; The logical pasta of cylinder head trimmer valve and cylinder bottom trimmer valve amasss adjustable, effectively can control buffer speed, ensures oil hydraulic cylinder smooth running, avoids piston assembly and directly impact cylinder head, cylinder bottom, protect oil hydraulic cylinder; Make oil hydraulic cylinder operate steadily simultaneously, reduce noise pollution.
As the improvement to technique scheme, described cylinder head trimmer valve is buffer throttling valve.
As the improvement to technique scheme, described cylinder bottom trimmer valve is the one-way valve of band vent hole.
As the improvement to technique scheme, described guide ring is bronze ring, and described guide sleeve is cast bronze cover.
From the above-mentioned description to the utility model structure, compared to the prior art, the utility model tool has the following advantages:
Lifting machine high-precision hydraulic cylinder of the present utility model, the advantage that sealing is reliable, leakage is high with kinematic accuracy less, can meet the needs of operating mode.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.
Fig. 1 is structural representation of the present utility model;
Embodiment
In order to make the purpose of this utility model, technological scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
As shown in Figure 1, lifting machine high-precision hydraulic cylinder of the present utility model, comprises cylinder barrel 7, and cylinder barrel 7 is built with piston rod 8, and the head end of cylinder barrel 7 is provided with cylinder head 12, and the stop portion that described cylinder head 12 matches with cylinder barrel 7 is provided with o RunddichtringO 9; Cylinder head 12 offers rod chamber hydraulic fluid port 17, cylinder head center offers cylinder head center hole, has certain interval between the inner hole wall of cylinder head center hole and the periphery wall of piston rod 8, and rod chamber hydraulic fluid port 17 is communicated with oil hydraulic cylinder rod chamber by cylinder head center hole; The outer end of cylinder head 12 is built with guide sleeve 11 and cylinder cap 13, described guide sleeve 11 is fitted in cylinder head 12 by cylinder cap 13, the stop portion that described cylinder cap 13 matches with cylinder head 12 is provided with o RunddichtringO 9, described cylinder cap 13 opens center hole, the head end of piston rod 8 is slidably matched through the center hole sealing with the center hole of guide sleeve 11, this cylinder cap 13 of guide sleeve 11 and this cylinder cap 13, and the center hole inner ring of described cylinder cap 13 is provided with y-type seal ring 14 and dust ring 15; The tail end of piston rod 8 is provided with piston assembly, and described piston assembly comprises piston 5, is arranged on the retaining ring 18 of piston 5 both sides, and the perisporium in the middle part of described piston 5 is provided with guide ring 4, and the perisporium of described piston 5 both sides is provided with Yx seal ring 19; The tail end of described cylinder barrel 7 is connected with cylinder bottom 1, and the stop portion that described cylinder bottom 1 matches with cylinder barrel 7 is provided with o RunddichtringO 9; Cylinder bottom 1 offers rodless cavity hydraulic fluid port 21, cylinder bottom center offers cylinder bottom center hole, and rodless cavity hydraulic fluid port 21 is communicated with oil hydraulic cylinder rodless cavity by cylinder bottom center hole;
The tail end of described piston rod 8 is equipped with rod end cushion collar 6 and rear end cushion collar 20, rod end cushion collar 6, rear end cushion collar 20 lay respectively at the both sides of piston assembly, rod end cushion collar 6 is positioned at oil hydraulic cylinder rod chamber, and rear end cushion collar 20 is positioned at oil hydraulic cylinder rodless cavity; The end of described cylinder head center hole forms a peviform buffer cavity; The end of described cylinder bottom center hole forms a cylinder bottom buffer cavity; Cylinder head 12 and cylinder bottom 1 are respectively arranged with cylinder head trimmer valve 10 and cylinder bottom trimmer valve 2.
Lifting machine high-precision hydraulic cylinder of the present utility model, due to the setting of guide ring 4 and guide sleeve 11, improve the kinematic accuracy of piston rod 8 and piston assembly, cylinder bottom 1, cylinder barrel 7, cylinder head 12, cylinder cap 13 many places are provided with various ways sealing, make this lifting machine high-precision hydraulic cylinder have more reliable sealability, hydraulic fluid leak is few; The setting of rod end cushion collar 6 and rear end cushion collar 20, cylinder head trimmer valve 10 and cylinder bottom trimmer valve 2 changes flow area when rod chamber and rodless cavity oil return, and define certain back pressure, slowed down the travelling speed of piston assembly; The logical pasta of cylinder head trimmer valve 10 and cylinder bottom trimmer valve 2 amasss adjustable, effectively can control buffer speed, ensures oil hydraulic cylinder smooth running, avoids piston assembly and directly impact cylinder head, cylinder bottom, protect oil hydraulic cylinder; Make oil hydraulic cylinder operate steadily simultaneously, reduce noise pollution.
Described cylinder head trimmer valve 10 is buffer throttling valve.
Described cylinder bottom trimmer valve 2 is the one-way valve of band vent hole.
Described guide ring 4 is bronze ring, and described guide sleeve 11 is cast bronze cover.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (4)
1. a lifting machine high-precision hydraulic cylinder, is characterized in that: comprise cylinder barrel, and cylinder barrel is built with piston rod, and the head end of cylinder barrel is provided with cylinder head, and the stop portion that described cylinder head matches with cylinder barrel is provided with o RunddichtringO; Cylinder head offers rod chamber hydraulic fluid port, cylinder head center offers cylinder head center hole, has certain interval between the inner hole wall of cylinder head center hole and the periphery wall of piston rod, and rod chamber hydraulic fluid port is communicated with oil hydraulic cylinder rod chamber by cylinder head center hole; The outer end of cylinder head is built with guide sleeve and cylinder cap, described guide sleeve is fitted in cylinder head by cylinder cap, the stop portion that described cylinder cap matches with cylinder head is provided with o RunddichtringO, described cylinder cap opens center hole, the head end of piston rod is slidably matched through the center hole sealing with the center hole of guide sleeve, this cylinder cap of guide sleeve and this cylinder cap, and the center hole inner ring of described cylinder cap is provided with y-type seal ring and dust ring; The tail end of piston rod is provided with piston assembly, and described piston assembly comprises piston, is arranged on the retaining ring of piston both sides, and the perisporium in the middle part of described piston is provided with guide ring, and the perisporium of described piston both sides is provided with Yx seal ring; The tail end of described cylinder barrel is connected with cylinder bottom, and the stop portion that described cylinder bottom matches with cylinder barrel is provided with o RunddichtringO; Cylinder bottom offers rodless cavity hydraulic fluid port, cylinder bottom center offers cylinder bottom center hole, and rodless cavity hydraulic fluid port is communicated with oil hydraulic cylinder rodless cavity by cylinder bottom center hole;
The tail end of described piston rod is equipped with rod end cushion collar and rear end cushion collar, and rod end cushion collar, rear end cushion collar lay respectively at the both sides of piston assembly, and rod end cushion collar is positioned at oil hydraulic cylinder rod chamber, and rear end cushion collar is positioned at oil hydraulic cylinder rodless cavity; The end of described cylinder head center hole forms a peviform buffer cavity; The end of described cylinder bottom center hole forms a cylinder bottom buffer cavity; Cylinder head and cylinder bottom are respectively arranged with cylinder head trimmer valve and cylinder bottom trimmer valve.
2. lifting machine high-precision hydraulic cylinder according to claim 1, is characterized in that: described cylinder head trimmer valve is buffer throttling valve.
3. lifting machine high-precision hydraulic cylinder according to claim 1, is characterized in that: described cylinder bottom trimmer valve is the one-way valve of band vent hole.
4. lifting machine high-precision hydraulic cylinder according to claim 1, it is characterized in that: described guide ring is bronze ring, described guide sleeve is cast bronze cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520279869.4U CN204591863U (en) | 2015-05-04 | 2015-05-04 | A kind of lifting machine high-precision hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520279869.4U CN204591863U (en) | 2015-05-04 | 2015-05-04 | A kind of lifting machine high-precision hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204591863U true CN204591863U (en) | 2015-08-26 |
Family
ID=53928021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520279869.4U Expired - Fee Related CN204591863U (en) | 2015-05-04 | 2015-05-04 | A kind of lifting machine high-precision hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204591863U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107762560A (en) * | 2017-11-13 | 2018-03-06 | 北京工业大学 | A kind of thermo-electric converting device available for small-sized organic Rankine bottoming cycle residual neat recovering system |
| CN110332176A (en) * | 2019-08-01 | 2019-10-15 | 邵玉强 | A kind of hydraulic cylinder with pooling feature |
-
2015
- 2015-05-04 CN CN201520279869.4U patent/CN204591863U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107762560A (en) * | 2017-11-13 | 2018-03-06 | 北京工业大学 | A kind of thermo-electric converting device available for small-sized organic Rankine bottoming cycle residual neat recovering system |
| CN107762560B (en) * | 2017-11-13 | 2023-12-22 | 北京工业大学 | Thermal-electric conversion device for small organic Rankine cycle waste heat recovery system |
| CN110332176A (en) * | 2019-08-01 | 2019-10-15 | 邵玉强 | A kind of hydraulic cylinder with pooling feature |
| CN110332176B (en) * | 2019-08-01 | 2020-07-07 | 湖南星科液压有限公司 | Hydraulic cylinder with buffering function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150826 Termination date: 20160504 |