CN114165527B - Ultra-low friction sliding key mechanism - Google Patents
Ultra-low friction sliding key mechanism Download PDFInfo
- Publication number
- CN114165527B CN114165527B CN202110813936.6A CN202110813936A CN114165527B CN 114165527 B CN114165527 B CN 114165527B CN 202110813936 A CN202110813936 A CN 202110813936A CN 114165527 B CN114165527 B CN 114165527B
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- telescopic
- shaft
- sleeve
- sliding key
- telescopic shaft
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- 230000007246 mechanism Effects 0.000 title claims abstract description 23
- 238000005096 rolling process Methods 0.000 claims abstract description 40
- 230000000712 assembly Effects 0.000 claims abstract description 7
- 238000000429 assembly Methods 0.000 claims abstract description 7
- 238000009826 distribution Methods 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 9
- 238000009423 ventilation Methods 0.000 claims description 6
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
- 210000003746 feather Anatomy 0.000 claims 1
- 238000005265 energy consumption Methods 0.000 abstract description 6
- 230000009471 action Effects 0.000 abstract description 5
- 230000009467 reduction Effects 0.000 abstract description 2
- 230000036541 health Effects 0.000 abstract 1
- 230000001360 synchronised effect Effects 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 239000000110 cooling liquid Substances 0.000 description 3
- 238000007667 floating Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Classifications
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- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/02—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions
- F16D3/06—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions specially adapted to allow axial displacement
- F16D3/065—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions specially adapted to allow axial displacement by means of rolling elements
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- 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
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/16—Characterised by the construction of the motor unit of the straight-cylinder type of the telescopic type
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- 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
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- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The utility model provides an ultralow frictional force sliding key mechanism, solves the frictional force between connecting key and the keyway that prior art exists and is big, produces the grinding piece easily, and the health grade is low, often leads to action clearance to be sealed, grind to die, increases the energy consumption, and the noise is big, problem that action precision is low. Including flexible axle sleeve, its characterized in that: a telescopic inserting shaft is arranged in an inserting cavity in the middle of the telescopic shaft sleeve, a sliding key mounting groove is formed in the outer wall of an inserting shaft main body of the telescopic inserting shaft, and a plurality of groups of sliding key rolling column assemblies are arranged in the sliding key mounting groove; and a sliding key sliding groove which is axially arranged is arranged on the inner side wall of the inserting cavity of the telescopic shaft sleeve and at a position corresponding to the sliding key rolling column assembly. The novel sliding key has the advantages of reasonable design, compact structure, capability of effectively reducing friction force between the sliding key and the sliding groove, reduction of generation of grinding scraps, capability of preventing adhesion phenomenon between moving parts, good sanitary condition, low energy consumption, low noise and high operation reliability.
Description
Technical Field
The invention belongs to the technical field of sliding key mechanisms, and particularly relates to an ultralow-friction sliding key mechanism which can effectively reduce friction force between a sliding key and a sliding groove, reduce generation of grinding scraps, prevent adhesion phenomenon between moving parts, and has the advantages of good sanitary condition, low energy consumption, low noise and high operation reliability.
Background
Most existing sliding key connection modes adopt a hard connection mode of a whole connecting key and a key groove; moreover, since the friction between the connecting key and the key groove is large, lubricating oil is required, and thus the sanitary condition of the mechanism is poor, and the mechanism cannot be applied to product processing with high requirements on the sanitary condition (for example, production processing in the food industry and the medical industry). In addition, the hard friction connecting structure is easy to generate grinding scraps, and after long-time use, accumulated grinding scraps remain between the connecting key and the key groove, so that the action gap of the connecting structure is always sealed and ground to be dead, and further, the driving mechanism is required to apply larger acting force to enable the mechanism to normally act, so that the consumption of energy sources is increased, the running noise is improved, and the accuracy degree of the action is reduced. There is a need for an improvement over prior art sliding key mechanisms.
Disclosure of Invention
The invention aims at the problems and provides the ultra-low friction sliding key mechanism which can effectively reduce the friction force between the sliding key and the sliding groove, reduce the generation of grinding scraps, prevent the adhesion phenomenon between moving parts, and has the advantages of good sanitary condition, low energy consumption, low noise and high operation reliability.
The technical scheme adopted by the invention is as follows: the ultra-low friction sliding key mechanism comprises a telescopic shaft sleeve and is characterized in that: a telescopic inserting shaft is arranged in an inserting cavity in the middle of the telescopic shaft sleeve, a sliding key installation groove is formed in the outer wall of an inserting shaft main body of the telescopic inserting shaft, and a plurality of groups of sliding key rolling column assemblies which are arranged along the telescopic direction of the telescopic inserting shaft are arranged in the sliding key installation groove; meanwhile, a sliding key sliding groove which is axially arranged is also arranged on the inner side wall of the inserting cavity of the telescopic shaft sleeve and at a position corresponding to the sliding key rolling column assembly.
The sliding key rolling column assembly consists of vertically arranged connecting inserting columns, and the lower ends of the connecting inserting columns are fixedly connected with a plurality of roller connecting holes arranged in the sliding key mounting grooves through inserting column connecting parts respectively; and the upper ends of the connecting inserting columns are respectively sleeved with a rolling rotating sleeve capable of freely rotating. The rolling rotating sleeves are rotatably arranged at the upper ends of the connecting inserting posts and are respectively in rolling contact with the sliding key sliding grooves on the inner walls of the inserting cavities of the telescopic shaft sleeves, so that the friction force between the sliding keys and the sliding grooves is effectively reduced through rolling friction, the generation of grinding scraps is reduced, and the running reliability of the device is improved.
And a rotating sleeve inner bearing is arranged between the inner side of the rolling rotating sleeve at the upper end of the connecting inserting column and the outer side of the upper end of the connecting inserting column. The smoothness and stability of continuous rotation of the rolling rotating sleeve at the upper end of the connecting inserting column are ensured by the rotating sleeve inner bearing between the connecting inserting column and the rolling rotating sleeve.
One end of the inserting shaft main body of the telescopic inserting shaft is provided with a telescopic driving end which is used for being connected with a driving mechanism; the other end of the insertion shaft main body is provided with an execution part connecting end for connecting with an execution part. The telescopic driving cylinder connected with the telescopic driving end of the telescopic inserting shaft is utilized to drive the telescopic inserting shaft to reciprocate in the telescopic shaft sleeve, and the required processing and production are carried out through the executing component connected with the executing part connecting end of the telescopic inserting shaft.
The inserting shaft main body of the telescopic inserting shaft comprises a telescopic shaft thin section, and the sliding key mounting groove is arranged on the telescopic shaft thin section; one end of the telescopic shaft thin section is provided with a telescopic driving end, the other end of the telescopic shaft thin section is provided with a telescopic shaft thick section, and the end part of the telescopic shaft thick section is provided with an executing part connecting end. The telescopic shaft is convenient to control the telescopic inserting shaft in a multifunctional mode through the stepped structure formed by the telescopic shaft thin section and the telescopic shaft thick section, and meanwhile the size of a related transmission structure is effectively reduced.
The middle part of the telescopic shaft thick section of the telescopic inserting shaft is provided with a circulation distribution groove, the circulation distribution groove is communicated with a vacuum flow passage arranged on the inner side of the end part of the telescopic shaft thick section, and the end part of the vacuum flow passage is connected with a vacuum connection port arranged at the connection end of the executing part. The vacuum and the cooling liquid used by the executing component are separated in a sealing way by using the circulation distribution groove and are respectively conveyed into the corresponding flow channels.
The telescopic shaft sleeve is composed of a shaft sleeve main body, and a thick section inserting cavity is formed in the shaft sleeve main body; the front end of the shaft sleeve main body is also provided with a connecting thin sleeve, the middle part of the connecting thin sleeve is provided with a thin section inserting hole, and the thin section inserting hole is communicated with the thick section inserting cavity; the sliding key sliding groove is arranged in the thin section inserting hole of the connecting thin sleeve. The stepped telescopic inserting shaft formed by the telescopic shaft thin section and the telescopic shaft thick section is inserted into the thin section inserting hole and the thick section inserting cavity of the telescopic shaft sleeve section by section; and the telescopic position of the telescopic inserting shaft is mechanically limited through a shaft shoulder between the telescopic shaft thin section and the telescopic shaft thick section.
The telescopic shaft sleeve is characterized in that a rotary driving wheel is arranged on the connecting thin sleeve at the front end of the telescopic shaft sleeve and consists of a driving wheel body, a connecting sleeve inserting hole is formed in the middle of the driving wheel body, driving wheel key grooves are correspondingly formed in the inner wall of the connecting sleeve inserting hole and the outer wall of the connecting thin sleeve respectively, and the rotary driving wheel is fixedly arranged on the connecting thin sleeve of the telescopic shaft sleeve through a connecting key arranged in the driving wheel key groove. The driving wheel is driven to rotate by utilizing transmission parts such as a synchronous belt or a bevel gear, so that the telescopic shaft sleeve and a telescopic inserting shaft which is clamped with a sliding key sliding groove in the telescopic shaft sleeve through a sliding key rolling column assembly are driven to rotate together, and the rotation of the executing part is realized.
The inner side wall of the inserting cavity of the telescopic shaft sleeve is further provided with a resistance-reducing ventilation groove which is axially arranged. The resistance of the telescopic inserting shaft during reciprocating movement in the telescopic shaft sleeve is reduced through the resistance-reducing ventilation groove in the inserting cavity, and the energy consumption is reduced.
The invention has the beneficial effects that: because the invention adopts the telescopic inserting shaft arranged in the inserting cavity in the middle of the telescopic shaft sleeve, the outer wall of the inserting shaft main body of the telescopic inserting shaft is provided with the sliding key mounting grooves, and a plurality of groups of sliding key rolling column components which are arranged along the telescopic direction of the telescopic inserting shaft are arranged in the sliding key mounting grooves; the sliding key sliding grooves which are axially arranged are arranged on the inner side wall of the inserting cavity of the telescopic shaft sleeve and at the positions corresponding to the sliding key rolling column assemblies, so that the sliding key sliding groove type telescopic shaft sleeve has the advantages of reasonable design, compact structure, capability of effectively reducing friction force between the sliding key and the sliding groove, reduction of grinding scraps, prevention of adhesion phenomenon between moving parts, good sanitary condition, low energy consumption, low noise and high operation reliability; can be suitable for the technical field of high-precision tip and fine control.
Drawings
Fig. 1 is a schematic view of a structure of the present invention.
Fig. 2 is a schematic view of a structure of the telescopic plug shaft in fig. 1.
Fig. 3 is a cross-sectional view of the internal structure of fig. 2.
Fig. 4 is a split schematic view of the end sliding key rolling post assembly of fig. 2 and telescoping shaft segments.
Fig. 5 is a schematic view of an exploded construction of the sliding key rolling column assembly of fig. 4.
Fig. 6 is a schematic view of a construction of the telescopic shaft sleeve of fig. 1.
Fig. 7 is a sectional view of the internal structure of fig. 6.
Fig. 8 is a schematic view of a construction of the rotary drive wheel of fig. 1.
Fig. 9 is a sectional view of the internal structure of fig. 1.
Fig. 10 is a schematic view of a use state of the present invention.
The serial numbers in the figures illustrate: the device comprises a telescopic shaft sleeve 1, a telescopic inserting shaft 2, a rotary driving wheel 3, a wear-resistant copper pad 4, a telescopic driving end 5, a connecting end of an executing part 6, a telescopic shaft thin section 7, a telescopic shaft thick section 8, a sliding key installation groove 9, a sliding key rolling column assembly 10, a circulating distribution groove 11, a vacuum runner 12, a vacuum connecting port 13, a roller connecting hole 14, a shaft shoulder 15, a connecting inserting column 16, a inserting column connecting part 17, a rolling rotating sleeve 18, a rotating sleeve 19, a shaft sleeve main body 20, a thick section inserting cavity 21, a connecting thin sleeve 22, a thin section inserting hole 23, a sliding key sliding groove 24, a driving wheel key groove 26, a resistance-reducing ventilation groove 27 driving wheel bodies, a connecting sleeve inserting hole 28, a synchronous belt gear tooth 29, a 30 universal floating joint 31, a telescopic driving cylinder 32, a fixed shell 33 and a 34 executing part.
Detailed Description
The specific structure of the present invention will be described in detail with reference to fig. 1 to 10. The ultra-low friction sliding key mechanism comprises a telescopic shaft sleeve 1, wherein the telescopic shaft sleeve 1 is composed of a shaft sleeve main body 20, and a thick section inserting cavity 21 is formed in the shaft sleeve main body 20. And, the front end of axle sleeve main part 20 still is provided with and connects thin cover 22, and the middle part of connecting thin cover 22 is provided with thin section spliced eye 23, and thin section spliced eye 23 is linked together with thick section spliced cavity 21. The front end of the telescopic shaft sleeve 1 is provided with a rotary driving wheel 3 on a connecting thin sleeve 22, the rotary driving wheel 3 is composed of a driving wheel body 27, and the driving wheel body 27 is provided with synchronous belt gear teeth 29 for connecting with a synchronous belt or conical teeth for meshing with a bevel gear. The middle part of the driving wheel body 27 is provided with a connecting sleeve inserting hole 28, the inner wall of the connecting sleeve inserting hole 28 and the outer wall of the connecting sleeve 22 are respectively correspondingly provided with a driving wheel key slot 25, and the rotating driving wheel 3 is fixedly arranged on the connecting sleeve 22 of the telescopic shaft sleeve 1 through a connecting key arranged in the driving wheel key slot 25; and further, the driving parts such as a synchronous belt or a bevel gear are utilized to drive the rotary driving wheel 3 to rotate so as to drive the telescopic shaft sleeve 1 and the telescopic inserting shaft 2 clamped with the sliding key sliding groove 24 inside the telescopic shaft sleeve through the sliding key rolling column assembly 10 to rotate together, and the rotation of the executing part 34 is realized.
The middle thick section of the sleeve main body 20 of the telescopic sleeve 1 is provided with a telescopic inserted shaft 2 in a thick section inserting cavity 21. The inserting shaft main body of the telescopic inserting shaft 2 comprises a telescopic shaft thin section 7, a sliding key installation groove 9 is formed in the telescopic shaft thin section 7, and a plurality of groups of sliding key rolling column assemblies 10 which are arranged along the telescopic direction of the telescopic inserting shaft 2 are arranged in the sliding key installation groove 9. Correspondingly, a sliding key sliding groove 24 arranged along the axial direction is arranged in the thin section inserting hole 23 of the connecting thin sleeve 22 of the telescopic shaft sleeve 1 at a position corresponding to the sliding key rolling column assembly 10. Meanwhile, one end of a telescopic shaft thin section 7 of the telescopic insertion shaft 2 is provided with a telescopic driving end 5, and the telescopic driving end 5 is connected with a telescopic end of a telescopic driving cylinder 31 through a universal floating joint 30; the other end of the telescopic shaft thin section 7 is provided with a telescopic shaft thick section 8, the end part of the telescopic shaft thick section 8 is provided with an execution part connecting end 6, and the execution part connecting end 6 is connected with an execution part 34.
Therefore, the stepped telescopic inserting shaft 2 formed by the telescopic shaft thin section 7 and the telescopic shaft thick section 8 is inserted into the thin section inserting hole 23 and the thick section inserting cavity 21 of the telescopic shaft sleeve 1 section by section; and mechanically restricting the telescopic position of the telescopic plug shaft 2 by means of a shoulder 15 between the telescopic shaft thin section 7 and the telescopic shaft thick section 8. The telescopic drive cylinder 31 connected to the telescopic drive end 5 of the telescopic shaft 2 is used to drive the telescopic shaft 2 to reciprocate in the telescopic shaft sleeve 1, and the required processing and production are performed by the actuator 34 connected to the actuator connection end 6 of the telescopic shaft 2. In addition, the stepped structure formed by the telescopic shaft thin section 7 and the telescopic shaft thick section 8 is utilized to facilitate the multifunctional control of the telescopic shaft 2 (such as the rotation control of the telescopic shaft 2), and effectively reduce the size of the related transmission structure. The inner side wall of the thin section plug hole 23 of the connecting thin sleeve 22 of the telescopic shaft sleeve 1 is also provided with a resistance-reducing ventilation groove 26 arranged along the axial direction; the resistance of the telescopic inserting shaft 2 during reciprocating movement in the telescopic shaft sleeve 1 is reduced through the resistance-reducing ventilation groove 26 in the inserting cavity, and the consumption of energy is reduced.
The middle part of the telescopic shaft thick section 8 of the telescopic shaft 2 is also provided with a circulation distribution groove 11, the circulation distribution groove 11 is communicated with a vacuum runner 12 arranged on the inner side of the end part of the telescopic shaft thick section 8, and the end part of the vacuum runner 12 is connected with a vacuum connecting port 13 arranged at the connecting end 6 of the executing part; the vacuum and the cooling liquid used by the executing component 34 are separated in a sealing way by the circulation distribution groove 11 and are respectively conveyed into corresponding flow passages. Meanwhile, the end of the telescopic shaft thick section 8 of the telescopic insertion shaft 2 is provided with an adapter 33 which is convenient for vacuum or cooling liquid delivery. The outside of the telescopic shaft sleeve 1 is provided with a fixed shell 32, and a wear-resistant copper pad 4 is arranged between the end part of the shaft sleeve main body 20 of the telescopic shaft sleeve 1 and the side end of the rotary driving wheel 3, so that the operation reliability and the service life of the device are improved.
The sliding key rolling column assembly 10 arranged in the sliding key installation groove 9 consists of vertically arranged connecting inserting columns 16, and the lower ends of the connecting inserting columns 16 are fixedly connected with the internal threads of a plurality of roller connecting holes 14 arranged in the sliding key installation groove 9 through the external threads of the inserting column connecting parts 17. And, connect the upper end of inserting the post 16, cup joint and be provided with the rolling rotating sleeve 18 that can freely rotate respectively, the rolling rotating sleeve 18 can adopt engineering plastics's material to make. A rotating sleeve inner bearing 19 is further arranged between the inner side of the rolling rotating sleeve 18 connected with the upper end of the inserting column 16 and the outer side of the upper end of the connecting inserting column 16, and further smoothness and stability of continuous rotation of the rolling rotating sleeve 18 at the upper end of the connecting inserting column 16 are ensured through the rotating sleeve inner bearing 19 connected between the inserting column 16 and the rolling rotating sleeve 18. Meanwhile, the rolling rotating sleeves 18 which are rotatably arranged at the upper ends of the connecting inserting posts 16 are respectively in rolling contact with the sliding grooves 24 of the sliding keys on the inner wall of the inserting cavity of the telescopic shaft sleeve 1, so that the friction force between the sliding keys and the sliding grooves is effectively reduced through rolling friction, the generation of grinding scraps is reduced, the adhesion phenomenon between moving parts after long-time use is prevented, and the running reliability of the device is improved.
When the ultra-low friction sliding key mechanism is used, firstly, the telescopic driving end 5 of the telescopic inserting shaft 2 is connected with the telescopic end of the telescopic driving cylinder 31 through the universal floating joint 30; and the actuator connecting end 6 of the telescopic plug shaft 2 is connected with the actuator 34. When the executing component 34 is in the process of processing and production and needs to perform telescopic action, the telescopic driving cylinder 31 connected with the telescopic driving end 5 of the telescopic inserting shaft 2 is utilized to drive the telescopic inserting shaft 2 to reciprocate in the telescopic shaft sleeve 1, meanwhile, through the upper ends of the connecting inserting posts 16 of the sliding key rolling post assemblies 10 on the telescopic inserting shaft 2 and the rolling rotating sleeves 18 which are rotatably arranged, rolling contact in the sliding key sliding grooves 24 of the telescopic shaft sleeve 1 is realized, so that friction force between the sliding key rolling post assemblies 10 and the sliding key sliding grooves 24 is reduced, and generation of grinding fragments is reduced. When the executing member 34 needs to rotate, the rotating driving wheel 3 can be driven to rotate by a transmission member such as a synchronous belt or a bevel gear; accordingly, the drive telescopic bush 1 and the telescopic plug 2 engaged with the slide key sliding groove 24 in the bush are rotated together by the connection key provided in the drive wheel key groove 25.
Claims (7)
1. The utility model provides an ultralow frictional force feather key mechanism, includes telescopic shaft sleeve (1), its characterized in that: a telescopic inserting shaft (2) is arranged in an inserting cavity in the middle of the telescopic shaft sleeve (1), a sliding key installation groove (9) is formed in the outer wall of an inserting shaft main body of the telescopic inserting shaft (2), and a plurality of groups of sliding key rolling column assemblies (10) which are arranged along the telescopic direction of the telescopic inserting shaft (2) are arranged in the sliding key installation groove (9); meanwhile, a sliding key sliding groove (24) which is axially arranged is also arranged on the inner side wall of the inserting cavity of the telescopic shaft sleeve (1) at a position corresponding to the sliding key rolling column assembly (10); the sliding key rolling column assembly (10) is composed of vertically arranged connecting inserting columns (16), and the lower ends of the connecting inserting columns (16) are fixedly connected with a plurality of roller connecting holes (14) arranged in the sliding key mounting groove (9) through inserting column connecting parts (17) respectively; the upper ends of the connecting inserting columns (16) are respectively sleeved with a freely rotatable rolling rotating sleeve (18); the middle part of the telescopic shaft thick section (8) of the telescopic inserting shaft (2) is provided with a circulation distribution groove (11), the circulation distribution groove (11) is communicated with a vacuum flow passage (12) arranged on the inner side of the end part of the telescopic shaft thick section (8), and the end part of the vacuum flow passage (12) is connected with a vacuum connection port (13) arranged at the connecting end (6) of the executing part.
2. The ultra-low friction sliding key mechanism according to claim 1, wherein: a rotating sleeve inner bearing (19) is arranged between the inner side of the rolling rotating sleeve (18) at the upper end of the connecting inserting column (16) and the outer side of the upper end of the connecting inserting column (16).
3. The ultra-low friction sliding key mechanism according to claim 1, wherein: one end of the inserting shaft main body of the telescopic inserting shaft (2) is provided with a telescopic driving end (5) which is used for being connected with a driving mechanism; the other end of the insertion shaft body is provided with an execution part connecting end (6) for connecting with an execution part (34).
4. The ultra-low friction sliding key mechanism according to claim 3, wherein: the inserting shaft main body of the telescopic inserting shaft (2) comprises a telescopic shaft thin section (7), and the sliding key mounting groove (9) is arranged on the telescopic shaft thin section (7); one end of the telescopic shaft thin section (7) is provided with a telescopic driving end (5), the other end of the telescopic shaft thin section (7) is provided with a telescopic shaft thick section (8), and the end part of the telescopic shaft thick section (8) is provided with an executing part connecting end (6).
5. The ultra-low friction sliding key mechanism according to claim 4, wherein: the telescopic shaft sleeve (1) is composed of a shaft sleeve main body (20), and a thick section inserting cavity (21) is formed in the shaft sleeve main body (20); the front end of the shaft sleeve main body (20) is also provided with a connecting thin sleeve (22), the middle part of the connecting thin sleeve (22) is provided with a thin section inserting hole (23), and the thin section inserting hole (23) is communicated with the thick section inserting cavity (21); the sliding key sliding groove (24) is arranged in the thin section inserting hole (23) of the connecting thin sleeve (22).
6. The ultra-low friction sliding key mechanism according to claim 5, wherein: the telescopic shaft sleeve is characterized in that a rotary driving wheel (3) is arranged on a connecting thin sleeve (22) at the front end of the telescopic shaft sleeve (1), the rotary driving wheel (3) is composed of a driving wheel body (27), a connecting sleeve inserting hole (28) is formed in the middle of the driving wheel body (27), driving wheel key grooves (25) are correspondingly formed in the inner wall of the connecting sleeve inserting hole (28) and the outer wall of the connecting thin sleeve (22) respectively, and the rotary driving wheel (3) is fixedly arranged on the connecting thin sleeve (22) of the telescopic shaft sleeve (1) through connecting keys arranged in the driving wheel key grooves (25).
7. The ultra-low friction sliding key mechanism according to claim 1, wherein: the inner side wall of the inserting cavity of the telescopic shaft sleeve (1) is also provided with a resistance-reducing ventilation groove (26) which is axially arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110813936.6A CN114165527B (en) | 2021-07-19 | 2021-07-19 | Ultra-low friction sliding key mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110813936.6A CN114165527B (en) | 2021-07-19 | 2021-07-19 | Ultra-low friction sliding key mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114165527A CN114165527A (en) | 2022-03-11 |
| CN114165527B true CN114165527B (en) | 2024-05-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110813936.6A Active CN114165527B (en) | 2021-07-19 | 2021-07-19 | Ultra-low friction sliding key mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114165527B (en) |
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| JPH07150830A (en) * | 1993-11-30 | 1995-06-13 | Yuhshin Co Ltd | Free wheel type cylinder lock |
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| CN101827741A (en) * | 2007-10-15 | 2010-09-08 | 德昌机械株式会社 | Telescopic shaft for vehicle |
| CN202882783U (en) * | 2012-09-07 | 2013-04-17 | 中国石油化工股份有限公司 | Upward-rotation and downward-slide well drilling friction-reducing torsion-reducing tool |
| CN106438734A (en) * | 2016-12-16 | 2017-02-22 | 四川剑涧机械设备有限公司 | Straight track spline |
| CN215762889U (en) * | 2021-07-19 | 2022-02-08 | 沈阳北亚饮品机械有限公司 | Sliding key mechanism with ultralow friction force |
-
2021
- 2021-07-19 CN CN202110813936.6A patent/CN114165527B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1302700A (en) * | 1969-05-15 | 1973-01-10 | ||
| US5246320A (en) * | 1992-03-30 | 1993-09-21 | Jacob Krippelz, Jr | Keyway broach tool and method of broaching multiple keyways |
| JPH07150830A (en) * | 1993-11-30 | 1995-06-13 | Yuhshin Co Ltd | Free wheel type cylinder lock |
| CN101827741A (en) * | 2007-10-15 | 2010-09-08 | 德昌机械株式会社 | Telescopic shaft for vehicle |
| CN201382094Y (en) * | 2009-03-12 | 2010-01-13 | 龙怡 | Electrodeless ball spline slip coupling |
| CN202882783U (en) * | 2012-09-07 | 2013-04-17 | 中国石油化工股份有限公司 | Upward-rotation and downward-slide well drilling friction-reducing torsion-reducing tool |
| CN106438734A (en) * | 2016-12-16 | 2017-02-22 | 四川剑涧机械设备有限公司 | Straight track spline |
| CN215762889U (en) * | 2021-07-19 | 2022-02-08 | 沈阳北亚饮品机械有限公司 | Sliding key mechanism with ultralow friction force |
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| CN114165527A (en) | 2022-03-11 |
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