CN108757877A - Friction pulley flexible mechanical formula feedback device - Google Patents
Friction pulley flexible mechanical formula feedback device Download PDFInfo
- Publication number
- CN108757877A CN108757877A CN201810966249.6A CN201810966249A CN108757877A CN 108757877 A CN108757877 A CN 108757877A CN 201810966249 A CN201810966249 A CN 201810966249A CN 108757877 A CN108757877 A CN 108757877A
- Authority
- CN
- China
- Prior art keywords
- friction pulley
- transmission shaft
- feedback
- mounting bracket
- flexible mechanical
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
- F16H37/12—Gearings comprising primarily toothed or friction gearing, links or levers, and cams, or members of at least two of these types
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
Abstract
The present invention discloses a kind of friction pulley flexible mechanical formula feedback device, including power rail, friction pulley, mounting bracket, transmission shaft, roller gear and feedback rod, and there are two friction pulley settings, is symmetrically disposed on the both sides of power rail；Friction pulley rotational installation is in mounting bracket, and between transmission shaft is installed on two friction pulleys by transmission shaft support, the both ends of transmission shaft are rotatablely connected with the top of two friction pulleys respectively；Roller gear is located at the top of transmission shaft, and is rotatablely connected with the middle part outer wall of transmission shaft, and one end of roller gear is provided with connecting shaft, and the end of connecting shaft is threadedly coupled with feedback rod, and connecting shaft is rotatablely installed by limiting device in mounting bracket.The present invention carries out displacement, velocity feedback using friction pulley flexible contact, mechanical shock primary feedback component wear in work can be reduced, feedback accuracy can be adjusted with friction pulley diameter and normal pressure size, and stability is high, simple and reasonable, cost is relatively low.
Description
Technical field
The present invention relates to Numeric hydraulic cylinder feedback device technical fields, and in particular to a kind of friction pulley flexible mechanical formula feedback
Device.
Background technology
Feedback device is widely used in mechanical structure, especially Numeric hydraulic cylinder, current main internal feedback device point
For two major classes：A kind of passive feedback based on sensor type, a kind of active feedback based on mechanical structure.
Chinese patent 201610819216.X authorizes a kind of empty single rod of inbuilt displacement sensor integrated electric pump symmetrical
Hydraulic cylinder, feedback device uses magnetostrictive displacement sensor, of high cost, and feedback device precision depends primarily on sensor essence
Degree, once mangneto sensor failure, then feedback device failure, reliability are low；The one of the mandate of Chinese patent 200420084127.8
Kind two-stage screw internal foodback digital fluid cylinder, for feedback device using large pitch precision auger bar, manufacturing cost is higher, installation
Space is larger, and stability is poor when elongated thread bar works, and screw rod is influenced essence by working impact accumulation little particle easy to wear
Degree；Paper《A kind of research of new digital hydraulic cylinder》It is middle to introduce a kind of Numeric hydraulic cylinder fed back using rack-and-pinion,
Noise is big when rack-and-pinion works, and rack accumulation fine granularity pollutant easy to wear, seriously affects control accuracy.
Therefore it provides a kind of friction pulley flexible mechanical formula feedback device, to solve the problems of above-mentioned prior art,
As present technical problem urgently to be resolved hurrily.
Invention content
The object of the present invention is to provide a kind of friction pulley flexible mechanical formula feedback devices, exist to solve the above-mentioned prior art
The problem of, displacement, velocity feedback are carried out using friction pulley flexible contact, mechanical shock primary feedback component in work can be reduced
Abrasion, feedback accuracy can be adjusted with friction pulley diameter and normal pressure size, and stability is high, conjunction simple in structure
Reason, cost are relatively low.
To achieve the above object, the present invention provides following schemes：It is anti-that the present invention provides a kind of friction pulley flexible mechanical formula
Device is presented, including power rail, friction pulley, mounting bracket, transmission shaft, roller gear and feedback rod, the friction pulley are provided with two
It is a, the both sides of the power rail are symmetrically disposed on, and frictional drive is constituted with the power rail；Friction pulley rotational installation in
In the mounting bracket, between the transmission shaft is installed on two friction pulleys by transmission shaft support, the transmission shaft
Both ends are rotatablely connected with the top of two friction pulleys respectively；The roller gear is located at the top of the transmission shaft, and with
The middle part outer wall rotation connection of the transmission shaft, one end of the roller gear is provided with connecting shaft, the end of the connecting shaft
It is threadedly coupled with the feedback rod, the connecting shaft is rotatablely installed by limiting device in the mounting bracket.
Preferably, it is respectively provided in the middle part of two friction pulleys there are one perforative installation axle, two installation axles
Dynamic be installed in the mounting bracket is forwarded by installation axle in both ends.
Preferably, the top of two installation axles is provided with first bevel gear, and the both ends of the transmission shaft are each provided with
One second bevel gear is engaged with two first bevel gears respectively, and the first bevel gear drives the second bevel gear
Rotation, to drive the transmission shaft to rotate.
Preferably, the first bevel gear is vertically arranged with the second bevel gear.
Preferably, helical tooth is provided on the middle part outer wall of the transmission shaft, the helical tooth connects with the roller gear
It connects, the roller gear is driven to rotate.
Preferably, the other end of the connecting shaft of the roller gear is equipped with feedback nut, the feedback nut with it is described
Feedback rod is attached by screw thread.
Preferably, the limiting device includes deep groove ball bearing, and the connecting shaft is rotated by the deep groove ball bearing pacifies
Loaded in the mounting bracket.
Preferably, the limiting device includes deep groove ball bearing, and the connecting shaft is rotated by the deep groove ball bearing pacifies
Loaded in the mounting bracket.
Preferably, the front end of the deep groove ball bearing is provided with bearing (ball) cover, and the bearing (ball) cover is secured by bolts in
In the mounting bracket；The connecting shaft is provided with limit flat key, the bearing end at the position of the deep groove ball bearing
It covers and is provided with annular spacing groove corresponding with the limit flat key, the limit flat key turns in the annular spacing groove
It is dynamic.
Preferably, sealing ring is provided on rear side of the deep groove ball bearing, the sealing ring consolidates the deep groove ball bearing
It is scheduled in the mounting bracket, and is sealed.
The present invention achieves following technique effect compared with the existing technology：
The present invention carries out displacement, velocity feedback using friction pulley flexible contact, and it is main can to reduce mechanical shock in work
Feedback means are worn, and feedback accuracy can be adjusted with friction pulley diameter and normal pressure size, and stability is high, structure
Advantages of simple, cost is relatively low, can produce different series product；There are two friction pulleys, is symmetrically mounted on piston rod both ends, make its by
Power is uniform, and the wheel diameter that can be rubbed by change, adjustment improve control accuracy to power rail normal pressure；Both ends of the drive shaft bores tooth
Wheel is connect with two friction pulley upper end Bevel Gear Transmissions, and uniform force, can only rotate cannot be translatable, by changing bevel gear teeth
Control accuracy, control speed and stroke can be improved in number, modulus.
Description of the drawings
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the present invention
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the structural schematic diagram of friction pulley flexible mechanical formula feedback device of the present invention；
Fig. 2 is the fundamental diagram of friction pulley flexible mechanical formula feedback device of the present invention；
Wherein, 1 power rail, 2 friction pulleys, 3 installation bearings, 4 mounting brackets, 5 transmission shafts, 6 transmission shaft supports, 7 Cylinder Gears
Wheel, 8 limit flat keys, 9 bearing (ball) covers, 10 deep groove ball bearings, 11 sealing rings, 12 feedback rods.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The object of the present invention is to provide a kind of friction pulley flexible mechanical formula feedback devices, to solve of the existing technology ask
Topic, displacement, velocity feedback are carried out using friction pulley flexible contact, can be reduced mechanical shock primary feedback component in work and be ground
Damage, feedback accuracy can be adjusted with friction pulley diameter and normal pressure size, and stability is high, simple and reasonable,
Cost is relatively low.
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, below in conjunction with the accompanying drawings and specific real
Applying mode, the present invention is described in further detail.
Embodiment one
As shown in Figs. 1-2, the present embodiment provides a kind of friction pulley flexible mechanical formula feedback devices, including power rail 1, friction
Wheel 2, mounting bracket 4, transmission shaft 5, roller gear 7 and feedback rod 12, there are two the settings of friction pulley 2, is symmetrically disposed on power rail 1
Both sides, and with power rail 1 constitute frictional drive；Friction pulley 2 is rotatablely installed in mounting bracket 4, and transmission shaft 5 passes through transmission shaft
Bearing 6 is installed between two friction pulleys 2, and the both ends of transmission shaft 5 are rotatablely connected with the top of two friction pulleys 2 respectively；Cylinder
Gear 7 is located at the top of transmission shaft 5, and is rotatablely connected with the middle part outer wall of transmission shaft 5, and one end of roller gear 7 is provided with company
The end of spindle, connecting shaft is threadedly coupled with feedback rod, and connecting shaft is rotatablely installed by limiting device in mounting bracket 4.
Specifically, mounting bracket 4 includes square frame in the present embodiment, it is provided with arc mounting bracket on square frame, two
The middle part of a friction pulley 2 is respectively provided with there are one perforative installation axle, and the upper and lower ends of installation axle pass through an installation bearing 3 respectively
It is rotatablely installed in the top and bottom in mounting bracket 4, to realize the rotation connection of two friction pulleys 2 and mounting bracket 4.Two
The top of a installation axle is respectively provided with there are one first bevel gear, and transmission shaft 5 is installed on the top of square frame by transmission shaft support 6
Portion, and among two first bevel gears, the both ends of transmission shaft 5 are each provided with a second bevel gear, respectively with two the
One bevel gear engages, and first bevel gear drives second bevel gear rotation, to drive transmission shaft 5 to rotate.Wherein, first bevel gear
It is vertically arranged with second bevel gear, and transmission shaft 5 is transmitted the fixation of shaft stool 6, can only rotate cannot be translatable.
The middle part outer wall upper edge of transmission shaft 5 is circumferentially provided with helical tooth, and helical tooth is connect with roller gear 7, constitutes gear
Transmission drives roller gear 7 to rotate by transmission shaft 5.The other end of the connecting shaft of roller gear 7 is equipped with feedback nut, instead
Feedback bar 12 is provided with screw thread close to one end of feedback nut, and feedback nut is attached with feedback rod 12 by screw thread, is driven anti-
While presenting bar 12 and rotate, also make feedback rod 12 with to O to translation.
Connecting shaft is rotatablely installed by limiting device in mounting bracket 4, and limiting device includes deep groove ball bearing 10, connection
Axis is rotatablely installed by deep groove ball bearing 10 on the side plate of 4 arc mounting bracket of mounting bracket；The front end of deep groove ball bearing 10 is set
It is equipped with bearing (ball) cover 9, bearing (ball) cover 9 is secured by bolts in mounting bracket 4；Connecting shaft is close to the position of deep groove ball bearing 10
Place is provided with limit flat key 8, and bearing (ball) cover 9 is provided with ring corresponding with limit flat key 8 close to one end of deep groove ball bearing 10
Shape limiting slot, limit flat key 8 rotate in annular spacing groove, and roller gear 7 is limited flat key 8 and is limited in bearing (ball) cover 9 and depth
Between ditch ball bearing 10, can only rotate cannot be translatable.The rear side of deep groove ball bearing 10 is provided with sealing ring 11, and sealing ring 11 will be deep
Ditch ball bearing 10 is fixed in mounting bracket 4, and is sealed, and is both provided with for connecting shaft on sealing ring 11 and bearing (ball) cover 9
By through-hole.
The operation principle of the present embodiment friction pulley flexible mechanical formula feedback device is as follows：
Power rail 1 receives P and is moved downward to power drive, and drive constitutes rubbing for frictional drive therewith under positive pressure
2 rotation of wheel is wiped, friction pulley 2 is fixed in mounting bracket 4 and can only rotate by installing bearing 3；Friction pulley 2 is bored by top first
Gear drives transmission shaft 5 to rotate together, and transmission shaft 5 is transmitted 6 fixation of shaft stool and can only rotate and cannot be translatable.Transmission shaft 5 rotates
When drive and constitute the rotation of gear-driven roller gear 7 therewith, roller gear 7 is limited flat key 8 and is limited in bearing (ball) cover 9 and deep
Between ditch ball bearing 10, can only rotate cannot be translatable, and deep groove ball bearing 10 is then fixed on by sealing ring 11 in mounting bracket 4, circle
The other end of stud wheel 7 equipped with feedback nut, and with feedback rod 12 constitute screw-driven, due to roller gear 7 is defined can only
Rotation cannot be translatable, then while driving feedback rod 12 to rotate, also make feedback rod 12 adjoint to O to translation, by the fortune of power rail 1
It is dynamic to record and feed back to dynamical system.
The present invention by the P of power rail to speed displacement by friction pulley be eventually transferred to the O of feedback rod to speed with
Displacement, according to feedback rod O to movement can accurately obtain power rail P to motion conditions, and carry out in real time record feedback, instead
Feedback bar O to feed back motion and feedback accuracy can rub the size of wheel diameter by change and pretightning force size is adjusted
It is whole.
Specific case is applied in the present invention, and principle and implementation of the present invention are described, above example
Illustrate the method and its core concept for being merely used to help understand the present invention；Meanwhile for those of ordinary skill in the art, according to
According to the thought of the present invention, there will be changes in the specific implementation manner and application range.In conclusion the content of the present specification
It should not be construed as limiting the invention.
Claims (9)
1. friction pulley flexible mechanical formula feedback device, it is characterised in that：Including power rail, friction pulley, mounting bracket, transmission shaft,
Roller gear and feedback rod, there are two friction pulley settings, is symmetrically disposed on the both sides of the power rail, and with the power
Bar constitutes frictional drive；In in the mounting bracket, the transmission shaft is pacified by transmission shaft support for the friction pulley rotational installation
Loaded between two friction pulleys, the both ends of the transmission shaft are rotatablely connected with the top of two friction pulleys respectively；Institute
The top that roller gear is located at the transmission shaft is stated, and is rotatablely connected with the middle part outer wall of the transmission shaft, the roller gear
One end be provided with connecting shaft, the end of the connecting shaft is threadedly coupled with the feedback rod, the connecting shaft pass through limit dress
Rotational installation is set in the mounting bracket.
2. friction pulley flexible mechanical formula feedback device according to claim 1, it is characterised in that：Two friction pulleys
Middle part is respectively provided with there are one perforative installation axle, and the both ends of two installation axles are forwarded by installation axle described in dynamic be installed on
In mounting bracket.
3. friction pulley flexible mechanical formula feedback device according to claim 2, it is characterised in that：Two installation axles
Top is provided with first bevel gear, and the both ends of the transmission shaft are each provided with a second bevel gear, respectively with two described
One bevel gear engages, and the first bevel gear drives the second bevel gear rotation, to drive the transmission shaft to rotate.
4. friction pulley flexible mechanical formula feedback device according to claim 3, it is characterised in that：The first bevel gear with
The second bevel gear is vertically arranged.
5. friction pulley flexible mechanical formula feedback device according to claim 1 or 4, it is characterised in that：The transmission shaft
Helical tooth is provided on the outer wall of middle part, the helical tooth is connect with the roller gear, and the roller gear is driven to rotate.
6. friction pulley flexible mechanical formula feedback device according to claim 5, it is characterised in that：The company of the roller gear
The other end of spindle is equipped with feedback nut, and the feedback nut is attached with the feedback rod by screw thread.
7. friction pulley flexible mechanical formula feedback device according to claim 1, it is characterised in that：The limiting device includes
Deep groove ball bearing, the connecting shaft are rotatablely installed by the deep groove ball bearing in the mounting bracket.
8. friction pulley flexible mechanical formula feedback device according to claim 7, it is characterised in that：The deep groove ball bearing
Front end is provided with bearing (ball) cover, and the bearing (ball) cover is secured by bolts in the mounting bracket；The connecting shaft is close to institute
It states and is provided with limit flat key at the position of deep groove ball bearing, be provided on the bearing (ball) cover corresponding with the limit flat key
Annular spacing groove, the limit flat key rotate in the annular spacing groove.
9. friction pulley flexible mechanical formula feedback device according to claim 8, it is characterised in that：The deep groove ball bearing
Rear side is provided with sealing ring, and the deep groove ball bearing is fixed in the mounting bracket by the sealing ring, and is sealed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810966249.6A CN108757877B (en) | 2018-08-23 | 2018-08-23 | Flexible mechanical feedback device of friction wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810966249.6A CN108757877B (en) | 2018-08-23 | 2018-08-23 | Flexible mechanical feedback device of friction wheel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108757877A true CN108757877A (en) | 2018-11-06 |
| CN108757877B CN108757877B (en) | 2023-04-25 |
Family
ID=63966948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810966249.6A Active CN108757877B (en) | 2018-08-23 | 2018-08-23 | Flexible mechanical feedback device of friction wheel |
Country Status (1)
| Country | Link |
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| CN (1) | CN108757877B (en) |
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| Publication number | Publication date |
|---|---|
| CN108757877B (en) | 2023-04-25 |
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