CN204921650U - Novel push -and -pull flexible axle - Google Patents
Novel push -and -pull flexible axle Download PDFInfo
- Publication number
- CN204921650U CN204921650U CN201520616109.8U CN201520616109U CN204921650U CN 204921650 U CN204921650 U CN 204921650U CN 201520616109 U CN201520616109 U CN 201520616109U CN 204921650 U CN204921650 U CN 204921650U
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- CN
- China
- Prior art keywords
- steel ball
- wall
- ball linear
- linear bearing
- flexible shaft
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- Expired - Fee Related
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Abstract
The utility model discloses a novel push -and -pull flexible axle, include: a core, a plurality of steel ball linear bearing, a plurality of steel ball linear bearing overlap in the outer wall of axle core to has the interval between the two adjacent steel ball linear bearing, a first protective sheath, first protection ways in a plurality of steel ball linear bearing's outer wall, a protection steel wire sleeve, the protection steel wire sleeve overlap in the outer wall of first protective sheath, a second protective sheath, second protection ways in protection steel wire sleeve's outer wall. Use the utility model relates to a novel push -and -pull flexible axle, an axle core movement resistance are rolling friction power, axle core and the contact of steel ball linear bearing, and the zero clearance makes the novel push -and -pull flexible axle stroke of having no time effectively, and the control response is fast, the precision height, movement resistance is littleer, and life is longer.
Description
Technical field
The utility model relates to a kind of technical field connecting flexible axle, particularly relates to a kind of novel pushing-pulling flexible shaft for rock drill hydraulic multitandem valve.
Background technique
Pushing-pulling flexible shaft is a kind of common connection flexible axle, existing has been widely used in space flight and aviation, automobile, engineering machinery, defence equipment, boats and ships, mine and coal, logistics carrying, railway transport, the fields such as agricultural equipment.Fig. 1 is the schematic diagram of existing pushing-pulling flexible shaft, and Fig. 2 is the sectional view of existing pushing-pulling flexible shaft, refers to shown in Fig. 1 and Fig. 2.This pushing-pulling flexible shaft comprises an axle core 11; one conduit 12, being placed on axle core 11 outer wall is placed on the protection steel wire cover 13 of conduit 12 outer wall, and one is placed on the protecting jacket 14 that protection steel wire overlaps 13 outer walls; meanwhile, gap 15 is left between the outer wall of axle core 11 and the inwall of conduit 12.But there is gap between the axle core of existing pushing-pulling flexible shaft and conduit, axle core needs the gap first compensated between itself and conduit when moving, make axle core there is idle stroke, causes control to produce delayed, and precision reduces.And can sliding friction be produced between axle core and conduit, surface friction drag is large, and axle core and conduit also can produce wearing and tearing, and the gap that also can add between macro-axis core and conduit of wearing and tearing, affects the working life of pushing-pulling flexible shaft further.
Model utility content
The purpose of this utility model is to provide a kind of novel pushing-pulling flexible shaft for rock drill hydraulic multitandem valve, there is idle stroke, control hysteresis to solve existing pushing-pulling flexible shaft, and surface friction drag is large, and the problem that precision is low.
To achieve these goals, the technological scheme that the utility model is taked is:
A novel pushing-pulling flexible shaft, wherein, comprising: an axle core; Some steel ball linear bearings, some described steel ball linear bearings are placed on the outer wall of described axle core, and have spacing between steel ball linear bearing described in adjacent two; One first protecting jacket, described first protecting jacket is placed on the outer wall of some described steel ball linear bearings; One protection steel wire cover, described protection steel wire cover is placed on the outer wall of described first protecting jacket; One second protecting jacket, described second protecting jacket is placed on the outer wall of described protection steel wire cover.
Above-mentioned a kind of novel pushing-pulling flexible shaft, wherein, the spacing often described in adjacent two between steel ball linear bearing is equal.
Above-mentioned a kind of novel pushing-pulling flexible shaft, wherein, the steel ball of steel ball linear bearing described in each is fitted the outer wall of described axle core rotationally.
Above-mentioned a kind of novel pushing-pulling flexible shaft, wherein, described first protecting jacket has several, and described in each, the first protecting jacket is placed on the outer wall of steel ball linear bearing described in.
The utility model is owing to have employed above-mentioned technology, and the good effect making it compared with prior art to have is:
Axle core resistance to motion is force of rolling friction, and axle core contacts with steel ball linear bearing, gapless, effectively makes pushing-pulling flexible shaft not have idle stroke, and control response is fast, and precision is high, and resistance to motion is less, longer service life.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of existing pushing-pulling flexible shaft;
Fig. 2 is the sectional view of existing pushing-pulling flexible shaft;
Fig. 3 is the schematic diagram of a kind of novel pushing-pulling flexible shaft of the present utility model;
Fig. 4 is the sectional view of a kind of novel pushing-pulling flexible shaft of the present utility model;
Fig. 5 is the schematic diagram of the rock drill hydraulic multitandem valve installing a kind of novel pushing-pulling flexible shaft of the present utility model.
In accompanying drawing: 11, axle core; 12, conduit; 13, steel wire cover is protected; 14, protecting jacket; 15, gap; 2, axle core; 3, steel ball linear bearing; 4, spacing; 5, the first protecting jacket; 6, steel wire cover is protected; 7, the second protecting jacket; 8, multi-way valve; 9, flexible shaft operation device.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, but not as restriction of the present utility model.
Fig. 3 is the schematic diagram of a kind of novel pushing-pulling flexible shaft of the present utility model, and Fig. 4 is the sectional view of a kind of novel pushing-pulling flexible shaft of the present utility model, refers to shown in Fig. 3 and Fig. 4.A kind of novel pushing-pulling flexible shaft of the present utility model, includes an axle core 2, some steel ball linear bearings 3, and some steel ball linear bearings 3 are placed on the outer wall of axle core 2, and has spacing 4 between adjacent two steel ball linear bearings 3.One first protecting jacket 5, first protecting jacket 5 is placed on the outer wall of some steel ball linear bearings 3.One protection steel wire cover 6, protection steel wire cover 6 is placed on the outer wall of the first protecting jacket 5, and also includes the outer wall that one second protecting jacket 7, second protecting jacket 7 is placed on protection steel wire cover 6.
The utility model also has following mode of execution on the basis of the above:
In further embodiment of the present utility model, please continue shown in Figure 2.Spacing 4 often between adjacent two steel ball linear bearings 3 is equal, makes some steel ball linear bearings 3 equally spaced outer wall being placed on axle core 2 mutually respectively.Meanwhile, the steel ball of each steel ball linear bearing 3 fits in the outer wall of axle core 2 rotationally, and make the resistance to motion of axle core 2 be force of rolling friction, axle core 2 contacts with steel ball linear bearing 3, gapless.
In further embodiment of the present utility model; first protecting jacket 5 has several; and some first protecting jackets 5 mate mutually with some steel ball linear bearings 3; make each first protecting jacket 5 be placed on the outer wall of a steel ball linear bearing 3, and protect steel wire cover 6 to be placed on the outer wall of some first protecting jackets 5.
A kind of novel pushing-pulling flexible shaft of the present utility model, owing to have employed steel ball linear bearing 3, eliminates the gap between axle core 2 and in-situ conduit, eliminates idle stroke, thus make control response fast, eliminate retardation phenomenon, also effectively improve control accuracy, simultaneously, it is rolling friction between axle core 2 and steel ball linear bearing 3, replace the sliding friction between axle core 2 and in-situ conduit, make surface friction drag less, move more flexible, reduce axle core 2 to wear and tear, extend the working life of pushing-pulling flexible shaft.
In further embodiment of the present utility model, Fig. 5 is the schematic diagram of the rock drill hydraulic multitandem valve installing a kind of novel pushing-pulling flexible shaft of the present utility model, shown in Figure 5.A kind of rock drill hydraulic multitandem valve of the present utility model, comprise hydraulic multitandem valve, hydraulic multitandem valve comprises multi-way valve 8, flexible shaft operation device 9, a kind of novel pushing-pulling flexible shaft of the present utility model, and the two ends of novel pushing-pulling flexible shaft are connected with multi-way valve 8 and flexible shaft operation device 9 respectively.Operating flexible shaft operator 9 can drive the valve core movement of hydraulic multitandem valve 8 by novel pushing-pulling flexible shaft, realize hydraulic control.Use a kind of novel pushing-pulling flexible shaft of the present utility model, eliminate the idle stroke of old-fashioned flexible axle, make control response fast, precision is high, and resistance to motion is little, and flexible axle longer service life.
The foregoing is only the utility model preferred embodiment; not thereby mode of execution of the present utility model and protection domain is limited; to those skilled in the art; should recognize and all should be included in the scheme that equivalent replacement done by all utilization the utility model specifications and diagramatic content and apparent change obtain in protection domain of the present utility model.
Claims (4)
1. a novel pushing-pulling flexible shaft, is characterized in that, comprising:
One axle core;
Some steel ball linear bearings, some described steel ball linear bearings are placed on the outer wall of described axle core, and have spacing between steel ball linear bearing described in adjacent two;
One first protecting jacket, described first protecting jacket is placed on the outer wall of some described steel ball linear bearings;
One protection steel wire cover, described protection steel wire cover is placed on the outer wall of described first protecting jacket;
One second protecting jacket, described second protecting jacket is placed on the outer wall of described protection steel wire cover.
2. pushing-pulling flexible shaft novel according to claim 1, is characterized in that, the spacing often described in adjacent two between steel ball linear bearing is equal.
3. pushing-pulling flexible shaft novel according to claim 1, is characterized in that, the steel ball of steel ball linear bearing described in each is fitted the outer wall of described axle core rotationally.
4. pushing-pulling flexible shaft novel according to claim 1, is characterized in that, described first protecting jacket has several, and described in each, the first protecting jacket is placed on the outer wall of steel ball linear bearing described in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520616109.8U CN204921650U (en) | 2015-08-14 | 2015-08-14 | Novel push -and -pull flexible axle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520616109.8U CN204921650U (en) | 2015-08-14 | 2015-08-14 | Novel push -and -pull flexible axle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204921650U true CN204921650U (en) | 2015-12-30 |
Family
ID=54970781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520616109.8U Expired - Fee Related CN204921650U (en) | 2015-08-14 | 2015-08-14 | Novel push -and -pull flexible axle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204921650U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109386338A (en) * | 2017-08-10 | 2019-02-26 | 摩托尼科株式会社 | The variable valve lift apparatus of engine |
-
2015
- 2015-08-14 CN CN201520616109.8U patent/CN204921650U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109386338A (en) * | 2017-08-10 | 2019-02-26 | 摩托尼科株式会社 | The variable valve lift apparatus of engine |
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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 |
Granted publication date: 20151230 Termination date: 20200814 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |