CN202867395U - Low-friction high-frequency sound hydraulic cylinder - Google Patents
Low-friction high-frequency sound hydraulic cylinder Download PDFInfo
- Publication number
- CN202867395U CN202867395U CN2012204027847U CN201220402784U CN202867395U CN 202867395 U CN202867395 U CN 202867395U CN 2012204027847 U CN2012204027847 U CN 2012204027847U CN 201220402784 U CN201220402784 U CN 201220402784U CN 202867395 U CN202867395 U CN 202867395U
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- bronze layer
- aluminium bronze
- frequency sound
- hydraulic cylinder
- high frequency
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Abstract
The utility model discloses a low-friction high-frequency sound hydraulic cylinder which comprises a front cylinder cover, a front bush, a cylinder barrel, a rear bush, a rear cylinder cover, a piston and a piston rod, the front bush and the rear bush are respectively covered at both ends of the cylinder barrel, the front cylinder cover covers the front bush, and the rear cylinder cover covers the rear bush. The piston rod penetrates through the front cylinder cover, the front bush, the cylinder barrel, the rear bush and the rear cylinder cover, and the piston is arranged in the middle of the piston rod. A first aluminum bronze alloy layer is covered on the circumference of an outer circle of the piston, a second aluminum bronze alloy layer is covered on the circumference of an inner circle of the front bush, and a third aluminum bronze alloy layer is covered on the circumference of an inner circle of the rear bush. The low-friction high-frequency sound hydraulic cylinder can achieve low friction force and high frequency sound, simultaneously can bear large radial load and prolong service life of a hydraulic cylinder.
Description
Technical field
The utility model relates to the oil hydraulic cylinder technology, is specifically related to a kind of low friction high frequency sound oil hydraulic cylinder.
Background technique
In hydraulic servo control, because the control accuracy to position, speed or power requires very high, adopt the hydraulic servo cylinder of conventional seals mode can not satisfy high-precision requirement, in addition, be used for the hydraulic servo cylinder on vibration, the fatigue testing machine, because oil cylinder piston and oil cylinder inner wall produce the high frequency relative movement for a long time in the part, fretting wear and frictional heating are very large, and radiating effect is poor, the working life of oil cylinder is short, thereby in servocylinder, generally use hydrodynamic journal liquid polymers, the control accuracy of system can improve an order of magnitude.
Hydrodynamic journal liquid polymers adopt the double cone hydrostatic bearing more, as shown in Figure 1.It has a series of advantage: such as the neat liquid friction, friction factor is little, weares and teares little, can keep for a long time highi degree of accuracy, velocity range is large, both can be used for can be used for again low speed at a high speed, but the hydrodynamic journal liquid polymers complex structure, need the extra oil supplying device of a cover, because form stable oil film, just have larger leakage rate, use inconvenience in some occasion.
The model utility content
The deficiency that the utility model exists in order to overcome above prior art provides a kind of low friction high frequency sound oil hydraulic cylinder, can realize lower frictional force and higher frequency response, can bear larger radial load simultaneously, prolongs the working life of oil hydraulic cylinder.
The purpose of this utility model realizes by following technological scheme: this low friction high frequency sound oil hydraulic cylinder, comprise front end housing, front lining, cylinder barrel, back bush, back cylinder cover, piston and piston rod, front lining, back bush covers respectively at the cylinder barrel two ends, front end housing is covered with front lining, back cylinder cover is covered with back bush, piston rod passes front end housing, front lining, cylinder barrel, back bush, back cylinder cover, piston is installed in the middle of the piston rod, the outer peripheral surface of described piston is coated with the first aluminium bronze layer, the inner peripheral surface of front lining is coated with the second aluminium bronze layer, and the inner peripheral surface of back bush is coated with the 3rd aluminium bronze layer.
The thickness of described the first aluminium bronze layer is 2-4mm, and the thickness of the second aluminium bronze layer is 2-4mm, and the thickness of the 3rd aluminium bronze layer is 2-4mm.
Described the first aluminium bronze layer is that film is cylindric, and the first aluminium bronze layer is welded on the piston by built-up welding; The second aluminium bronze layer is that film is cylindric, and the second aluminium bronze layer is interference fitted on the front lining by built-up welding welding or integral body; The 3rd aluminium bronze layer is that film is cylindric, and the 3rd aluminium bronze layer is interference fitted on the back bush by built-up welding welding or integral body.
Described the first aluminium bronze layer outside is provided with the oil groove of the parallel circumference of multiple tracks.
Described oil groove be shaped as triangle, semicircle, trapezoidal or rectangle.
Described the second aluminium bronze layer inner face, the 3rd aluminium bronze layer inner face all are provided with the decompressing groove of the parallel circumference of multiple tracks.
Described decompressing groove be shaped as triangle, semicircle, trapezoidal or rectangle.
Described front end housing, back cylinder cover all are provided with two U-shaped seal rings.
Described cylinder barrel has 2 pressure hydraulic fluid ports, is positioned at the piston both sides.
Described front lining, cylinder barrel have the leakage oil duct.
The utility model has advantages of as follows with respect to prior art:
1, aluminum bronze is as a kind of good antifriction material, the intensity and the toughness that have high wear resistance, hardness and compare favourably with steel, friction factor is little, especially in the situation that oiling agent is arranged, friction factor than the little 1.5-2 of tin bronze is doubly made the friction partss such as axle sleeve, bearing shell more and more.
2, the outer peripheral surface of piston is coated with the first aluminium bronze layer, the inner peripheral surface of front lining is coated with the second aluminium bronze layer, the inner peripheral surface of back bush is coated with the 3rd aluminium bronze layer, can realize lower frictional force and higher frequency response, improve the oil hydraulic cylinder natural frequency, can bear larger radial load simultaneously.Be fit to be applied to the occasion that the needs higher-frequency is rung, as being used for the hydraulic servo cylinder on vibration, the fatigue testing machine.And its processing charges compares with common oil cylinder with Master Cost and is more or less the same, and larger using value is arranged.
Description of drawings
Fig. 1 is the structural drawing of existing double cone hydrostatic bearing oil hydraulic cylinder.
Fig. 2 is the structural representation of low friction high frequency sound oil hydraulic cylinder of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
Low friction high frequency sound oil hydraulic cylinder as shown in Figure 2, comprise front end housing 1, front lining 2, cylinder barrel 3, back bush 4, back cylinder cover 5, piston 6 and piston rod 7, front lining 2, back bush 4 covers respectively at cylinder barrel 3 two ends, front end housing 1 is covered with front lining 2, back cylinder cover 5 is covered with back bush 4, piston rod 7 passes front end housing 1, front lining 2, cylinder barrel 3, back bush 4, back cylinder cover 5, piston 6 is installed in the middle of the piston rod 7, the outer peripheral surface of piston 6 is coated with the first aluminium bronze layer 8, the inner peripheral surface of front lining 2 is coated with the second aluminium bronze layer 9, and the inner peripheral surface of back bush 4 is coated with the 3rd aluminium bronze layer 10.
The endoporus of front lining 2 and back bush 4 and piston rod 7 all pass through and are heat-treated to certain hardness and hard chromium plating.
The thickness of the first aluminium bronze layer 8 is 3mm, and the thickness of the second aluminium bronze layer 9 is 3mm, and the thickness of the 3rd aluminium bronze layer 10 is 3mm.
The first aluminium bronze layer 8 is that film is cylindric, the first aluminium bronze layer 8 by built-up welding on piston 6; The second aluminium bronze layer 9 is that film is cylindric, and the second aluminium bronze layer 9 is interference fitted on the front lining 2 by built-up welding welding or integral body; The 3rd aluminium bronze layer 10 is that film is cylindric, and the 3rd aluminium bronze layer 10 is interference fitted on the back bush 4 by built-up welding welding or integral body.
The first aluminium bronze layer 8 outside are provided with the oil groove 11 of the parallel circumference in 5 roads.Oil groove 11 be shaped as triangle.Oil groove 11 effect is all to press and lubricate, reaches the purpose of sealing by the gap of control and cylinder barrel.
The second aluminium bronze layer 9 inner face, the 3rd aluminium bronze layer 10 inner face all are provided with the decompressing groove 12 of the parallel circumference in 6 roads.Decompressing groove 12 be shaped as rectangle.Decompressing groove 12 effects are lubricated and decompression, seal simultaneously.
Above-mentioned embodiment is preferred embodiment of the present utility model; can not limit the utility model; other any change that does not deviate from the technical solution of the utility model and make or other equivalent substitute mode are included within the protection domain of the present utility model.
Claims (10)
1. hang down friction high frequency sound oil hydraulic cylinder, comprise front end housing, front lining, cylinder barrel, back bush, back cylinder cover, piston and piston rod, front lining, back bush cover respectively at the cylinder barrel two ends, front end housing is covered with front lining, back cylinder cover is covered with back bush, piston rod passes front end housing, front lining, cylinder barrel, back bush, back cylinder cover, piston is installed in the middle of the piston rod, it is characterized in that: the outer peripheral surface of described piston is coated with the first aluminium bronze layer, the inner peripheral surface of front lining is coated with the second aluminium bronze layer, and the inner peripheral surface of back bush is coated with the 3rd aluminium bronze layer.
2. low friction high frequency sound oil hydraulic cylinder according to claim 1, it is characterized in that: the thickness of described the first aluminium bronze layer is 2-4mm, and the thickness of the second aluminium bronze layer is 2-4mm, and the thickness of the 3rd aluminium bronze layer is 2-4mm.
3. low friction high frequency sound oil hydraulic cylinder according to claim 1, it is characterized in that: described the first aluminium bronze layer is that film is cylindric, and the first aluminium bronze layer is welded on the piston by built-up welding; The second aluminium bronze layer is that film is cylindric, and the second aluminium bronze layer is interference fitted on the front lining by built-up welding welding or integral body; The 3rd aluminium bronze layer is that film is cylindric, and the 3rd aluminium bronze layer is interference fitted on the back bush by built-up welding welding or integral body.
4. low friction high frequency sound oil hydraulic cylinder according to claim 1 is characterized in that: the oil groove that is provided with the parallel circumference of multiple tracks outside described the first aluminium bronze layer.
5. low friction high frequency sound oil hydraulic cylinder according to claim 4 is characterized in that: described oil groove be shaped as triangle, semicircle, trapezoidal or rectangle.
6. low friction high frequency sound oil hydraulic cylinder according to claim 1, it is characterized in that: described the second aluminium bronze layer inner face, the 3rd aluminium bronze layer inner face all are provided with the decompressing groove of the parallel circumference of multiple tracks.
7. low friction high frequency sound oil hydraulic cylinder according to claim 6 is characterized in that: described decompressing groove be shaped as triangle, semicircle, trapezoidal or rectangle.
8. low friction high frequency sound oil hydraulic cylinder according to claim 1, it is characterized in that: described front end housing, back cylinder cover all are provided with two U-shaped seal rings.
9. low friction high frequency sound oil hydraulic cylinder according to claim 1, it is characterized in that: described cylinder barrel has 2 pressure hydraulic fluid ports, is positioned at the piston both sides.
10. low friction high frequency sound oil hydraulic cylinder according to claim 1, it is characterized in that: described front lining, cylinder barrel have the leakage oil duct.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204027847U CN202867395U (en) | 2012-08-14 | 2012-08-14 | Low-friction high-frequency sound hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204027847U CN202867395U (en) | 2012-08-14 | 2012-08-14 | Low-friction high-frequency sound hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202867395U true CN202867395U (en) | 2013-04-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012204027847U Expired - Fee Related CN202867395U (en) | 2012-08-14 | 2012-08-14 | Low-friction high-frequency sound hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202867395U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104895866A (en) * | 2015-06-18 | 2015-09-09 | 合肥合锻机床股份有限公司 | Equal-speed equal-stroke high frequency response double-acting cylinder |
| CN105952710A (en) * | 2016-07-12 | 2016-09-21 | 天津优瑞纳斯液压机械有限公司 | High frequency response low friction servo hydraulic cylinder |
| CN106762962A (en) * | 2017-03-07 | 2017-05-31 | 长春机械科学研究院有限公司 | A kind of linear actuator |
| CN107013528A (en) * | 2017-05-03 | 2017-08-04 | 哈尔滨理工大学 | A kind of low friction static pressure oil film guide hydraulic cylinder |
| CN114483703A (en) * | 2022-02-28 | 2022-05-13 | 东北大学 | Rock mechanics high-amplitude-frequency response characteristic hydraulic actuator |
-
2012
- 2012-08-14 CN CN2012204027847U patent/CN202867395U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104895866A (en) * | 2015-06-18 | 2015-09-09 | 合肥合锻机床股份有限公司 | Equal-speed equal-stroke high frequency response double-acting cylinder |
| CN105952710A (en) * | 2016-07-12 | 2016-09-21 | 天津优瑞纳斯液压机械有限公司 | High frequency response low friction servo hydraulic cylinder |
| CN106762962A (en) * | 2017-03-07 | 2017-05-31 | 长春机械科学研究院有限公司 | A kind of linear actuator |
| CN107013528A (en) * | 2017-05-03 | 2017-08-04 | 哈尔滨理工大学 | A kind of low friction static pressure oil film guide hydraulic cylinder |
| CN114483703A (en) * | 2022-02-28 | 2022-05-13 | 东北大学 | Rock mechanics high-amplitude-frequency response characteristic hydraulic actuator |
| CN114483703B (en) * | 2022-02-28 | 2022-11-25 | 东北大学 | Rock mechanics high-amplitude-frequency response characteristic hydraulic actuator |
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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: 20130410 Termination date: 20210814 |