CN111828459A - Multi-body flexible cardan shaft with self-adaptability - Google Patents
Multi-body flexible cardan shaft with self-adaptability Download PDFInfo
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- CN111828459A CN111828459A CN201910310996.9A CN201910310996A CN111828459A CN 111828459 A CN111828459 A CN 111828459A CN 201910310996 A CN201910310996 A CN 201910310996A CN 111828459 A CN111828459 A CN 111828459A
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- sleeve
- shaft
- cup sleeve
- self
- steel sleeve
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 50
- 239000010959 steel Substances 0.000 claims abstract description 50
- 239000011521 glass Substances 0.000 claims description 13
- 230000003247 decreasing effect Effects 0.000 claims description 3
- 238000005452 bending Methods 0.000 abstract description 16
- 238000000034 method Methods 0.000 abstract description 6
- 230000007547 defect Effects 0.000 abstract description 3
- 238000003754 machining Methods 0.000 abstract description 2
- 238000003466 welding Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 235000015842 Hesperis Nutrition 0.000 description 1
- 235000012633 Iberis amara Nutrition 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
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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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C1/00—Flexible shafts; Mechanical means for transmitting movement in a flexible sheathing
- F16C1/02—Flexible shafts; Mechanical means for transmitting movement in a flexible sheathing for conveying rotary movements
- F16C1/06—Flexible shafts; Mechanical means for transmitting movement in a flexible sheathing for conveying rotary movements with guiding sheathing, tube or box
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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
- F16C1/00—Flexible shafts; Mechanical means for transmitting movement in a flexible sheathing
- F16C1/26—Construction of guiding-sheathings or guiding-tubes
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Mechanical Engineering (AREA)
- Flexible Shafts (AREA)
Abstract
The application belongs to the field of machining, and particularly relates to a self-adaptive multi-body flexible universal shaft which comprises a base shaft and a stay cable, wherein a short steel sleeve and a long steel sleeve are respectively fixed at two ends of the stay cable, and at least one left cup sleeve, one right cup sleeve and a middle cup sleeve are sleeved on the stay cable part between the short steel sleeve and the long steel sleeve; the long steel sleeve is fixedly connected with the base shaft. The multi-body flexible cardan shaft with self-adaptability can realize bending and rotation of multiple reverse directions at any angle, and the distance between each point on the surface of the cup sleeve and the center is kept unchanged in the bending and rotating processes. When the cup sleeve is used as a support mandrel from the inner wall of the elbow, the cup sleeve can be tightly attached to the inner wall of a pipeline, the shape precision of the pipe fitting during bending can be greatly improved, the cup sleeve can also be used as a flexible shaft to transmit space power, and the defects of a universal joint are overcome.
Description
Technical Field
The application belongs to the field of machining, and particularly relates to a multi-body flexible cardan shaft with self-adaptability.
Background
With the development of society and the progress of science and technology, more and more guide pipes are used by equipment such as ships, nuclear reactors, rockets, aeroengines and the like, and the requirements on the shapes and the performances of the guide pipes are more severe. The traditional processing methods such as casting, welding and the like are difficult to meet the requirements, the shape tolerance such as roundness of the bending part of the existing elbow technology is difficult to meet the use requirement, and how to ensure and improve the precision of metal guide preparation is urgent.
The prior patent is as the utility model patent with patent number CN200820173243.5, application date 20081016, name "flexible cardan shaft", and its technical scheme is: the utility model discloses a flexible cardan shaft, the external structure of the universal joint of cardan shaft has replaced the connector of petal formula by the elastic sleeve that elastic steel wire or billet were woven, becomes flexible coupling by the hard joint of the formula of just, mainly bears the moment of torsion of cardan shaft by it, and it is nimble convenient to rotate, has high wearability.
Although the above patent also pertains to a flexible universal shaft, it is difficult to meet the use requirements for shape tolerances such as roundness of the bent portion.
Disclosure of Invention
In order to solve the problems in the prior art, a self-adaptive multi-body flexible cardan shaft is provided, wherein the position of each cup sleeve can be automatically adjusted according to actual conditions when the shaft is bent, and the diameter of the shaft is basically constant.
In order to achieve the technical problem, the technical scheme adopted by the application is as follows:
a multi-body flexible cardan shaft with self-adaptability, characterized in that: the novel anti-theft pull cable comprises a base shaft and a pull cable, wherein a short steel sleeve and a long steel sleeve are respectively fixed at two ends of the pull cable, and at least one left cup sleeve, one right cup sleeve and a middle cup sleeve are sleeved on the portion, between the short steel sleeve and the long steel sleeve, of the pull cable; the long steel sleeve is fixedly connected with the base shaft.
The middle cup sleeve set comprises at least one middle cup sleeve, the middle cup sleeve is of a double-spherical-surface structure with a spherical center coinciding with the central line of the stay cable, the double spherical surfaces comprise an outer spherical surface and an inner spherical surface, the middle cup sleeve is of a flexible shaft structure, the distance between the two spherical centers is the effective thickness of the middle cup sleeve (namely the length increased by adding one flexible shaft of the cup sleeve), and the inner spherical surfaces of the adjacent middle cup sleeves coincide.
The radii of the inner spherical surface and the outer spherical surface are equal, gradually increased or decreased. To form a taper flexible shaft, when the shaft is bent or deformed in other forms, the spherical surface of the cup sleeve can be adjusted in a self-adaptive way, and the shaft diameter of the shaft is kept unchanged.
One end of the left cup sleeve and one end of the right cup sleeve are plane surfaces, and the other end of the left cup sleeve and the other end of the right cup sleeve are spherical surfaces and are fixed with the base shaft.
And a gasket is arranged on the inhaul cable.
The long steel sleeve is in threaded connection with the base shaft.
The front end face of the base shaft is a plane, and threaded holes or key grooves are uniformly distributed in the circumferential direction of the base shaft, so that the base shaft is fixedly connected with the adjacent cup sleeves.
The stay cable is a steel wire rope, the connection between the stay cable and the short steel sleeve and the connection between the stay cable and the long steel sleeve can be realized by stamping fastening, welding and riveting or other fastening connection modes, and after the external force for deforming the stay cable is removed, the stay cable can drive the cup sleeve to reset rapidly and restore to the original state.
The beneficial effect of this application is:
compared with the prior art, due to the adoption of the technical scheme, the multi-body flexible cardan shaft with self-adaptability can bend and rotate at any angle in a plurality of opposite directions, and the distance between each point on the surface of the cup sleeve and the center is kept unchanged in the bending and rotating processes. When the cup sleeve is used as a support mandrel from the inner wall of the elbow, the cup sleeve can be tightly attached to the inner wall of a pipeline, the shape precision of the pipe fitting during bending can be greatly improved, the cup sleeve can also be used as a flexible shaft to transmit space power, and the defects of a universal joint are overcome. In addition, the device has the advantages of simple structure, high rigidity, stable and reliable operation, convenient adjustment, strong adaptability, low manufacturing cost and the like, and has very high social significance and popularization value.
Drawings
FIG. 1 is a schematic view of a cable shaft connection mode.
Fig. 2 is a schematic combination diagram of the cup sleeve.
FIG. 3 is a schematic diagram of a multi-body flexible cardan shaft with adaptive properties.
Description of reference numerals:
1-short steel sleeve, 2-stay cable, 3-gasket, 4-left cup sleeve, 5-middle cup sleeve, 10-right cup sleeve, 11-base shaft, 12-check screw hole, 13-long steel sleeve and 32-middle cup sleeve.
Detailed Description
Example 1
A multi-body flexible cardan shaft with self-adaptability comprises a base shaft 11 and a guy cable 2, wherein a short steel sleeve 1 and a long steel sleeve 13 are respectively fixed at two ends of the guy cable 2, and at least one left cup sleeve 4, one right cup sleeve 10 and a middle cup sleeve group 32 are sleeved on the part of the guy cable 2 between the short steel sleeve 1 and the long steel sleeve 13; the long steel sleeve 13 is fixedly connected with the base shaft 11.
The radii of the inner spherical surface and the outer spherical surface are equal, gradually increased or decreased. To form a taper flexible shaft, when the shaft is bent or deformed in other forms, the spherical surface of the cup sleeve can be adjusted in a self-adaptive way, and the shaft diameter of the shaft is kept unchanged.
One end of the left cup sleeve 4 and one end of the right cup sleeve 10 are plane surfaces, and the other end of the left cup sleeve and the other end of the right cup sleeve are spherical surfaces and are fixed with the base shaft 11. The stay 2 is provided with a washer 3. The long steel sleeve 13 is in threaded connection with the base shaft 11. The front end face of the base shaft 11 is a plane, and threaded holes or key grooves are uniformly distributed in the circumferential direction of the plane to realize the fastening connection with the adjacent cup sleeves.
The stay cable 2 is a steel wire rope, the connection between the stay cable 2 and the short steel sleeve 1 and the connection between the stay cable and the long steel sleeve 13 can be realized by stamping fastening, welding, riveting or other fastening connection modes, and after the external force for deforming the stay cable is removed, the stay cable 2 can drive the cup sleeve to reset rapidly and restore to the original state.
Compared with the prior art, due to the adoption of the technical scheme, the multi-body flexible cardan shaft with self-adaptability can bend and rotate at any angle in a plurality of opposite directions, and the distance between each point on the surface of the cup sleeve and the center is kept unchanged in the bending and rotating processes. When the cup sleeve is used as a support mandrel from the inner wall of the elbow, the cup sleeve can be tightly attached to the inner wall of a pipeline, the shape precision of the pipe fitting during bending can be greatly improved, the cup sleeve can also be used as a flexible shaft to transmit space power, and the defects of a universal joint are overcome. In addition, the device has the advantages of simple structure, high rigidity, stable and reliable operation, convenient adjustment, strong adaptability, low manufacturing cost and the like, and has very high social significance and popularization value.
Example 2
A fixing mode of a guy cable 2 shaft of the device is shown in figure 1, firstly a gasket 3 penetrates into a guy cable 2, secondly a short steel sleeve 1 and a long steel sleeve 13 penetrate into two ends of the guy cable 2 respectively, and then the guy cable 2 and the short steel sleeve 1, and the guy cable 2 and the long steel sleeve 13 are pressed tightly by a stamping method respectively so as to bear preset load without loosening; the arrangement of the cup sleeves is as shown in fig. 2, and the left cup sleeve 4, the middle cup sleeve group 32 and the right cup sleeve 10 are sequentially arranged from left to right; finally, the right end of the shaft of the inhaul cable 2 shown in the attached drawing 1 penetrates through the left end and the right end of the cup sleeve combination shown in the attached drawing 2, and finally is fastened and connected with the internal thread on the left end face of the base shaft 11 through the external thread of the long steel sleeve 13, and is pre-tightened to a set torque as required, and the overall structure schematic diagram after the assembly is shown in the attached drawing 3.
The multi-body flexible cardan shaft with self-adaptability disclosed by the application can be used as a shaping shaft and a flexible transmission shaft. When the shaft is used as a shaping shaft (taking a bent pipe mandrel as an example for explanation), the specific working process is as follows: firstly, the right end of a base shaft 11 of the universal shaft disclosed by the application is connected to a mandrel of a pipe bending machine, then the mandrel moves forwards to insert the universal shaft into the inner wall of the required bending part of the pipe fitting from a short steel sleeve 1 at the right end, a middle cup sleeve group 32 is ensured to be uniformly attached to the pipe wall, then a rotating arm of the pipe bending machine moves to drive the pipe fitting and the flexible end of the universal shaft to bend, each cup sleeve in the cup sleeve group shown in the attached figure 2 moves relatively and tightly supports the inner wall of the bending part of the pipe to keep the shape of the pipe, the mandrel withdraws after the bending is finished, and a guy; when the flexible transmission shaft is used, the surface of the cup sleeve needs to be properly treated according to the load to be transmitted so as to increase friction force or properly change the structure of a local surface, the surface is adjusted to a proper pre-tightening force, and then the base shaft 11 and the left cup sleeve 4 are directly connected with a transmission component respectively.
The inhaul cable 2 is a multi-strand steel wire rope or other elastic elements, a short steel sleeve 1 and a long steel sleeve 13 are fixed on the inhaul cable by punching or welding and other methods, and external threads are tapped on the long steel sleeve 13; during assembly, the washer 3 and the plurality of cup sleeves are sequentially penetrated through the long steel sleeve 13 end, then the external thread on the long steel sleeve 13 is screwed into the internal thread at the front end of the base shaft 11, the fastening torque of threaded connection is adjusted according to the load, and finally the anti-loosening screw is screwed into the screw hole in the circumferential direction of the base shaft 11, so that the axial positioning and the bolt anti-loosening of the base shaft 11 and the long steel sleeve 13 are realized. The rear end hole of the base shaft 11 can be tapped or splined to realize connection with other components; during pipe bending, the rear end of the base shaft 11 is connected with a mandrel of a pipe bending machine, the cup sleeve group penetrates into the pipe fitting required to be bent from the end 1 of the short steel sleeve, the cup sleeve group is moved to the position, required to be bent, of the pipe fitting to be bent, the stay cable 2 and the cup sleeve are driven to move when the pipe fitting is bent, the cup sleeves slide relatively and cling to the inner wall of the pipeline to guarantee the shape of the bent position of the pipeline, the mandrel retreats after the pipe bending is completed to draw out the whole universal shaft, the stay cable 2 rebounds to drive the cup sleeve group to recover to the original shape, and preparation is.
The inhaul cable 2 is made of a plurality of strands of steel wire ropes, and is fixedly connected with the short steel sleeve 1 and the long steel sleeve 13 in a stamping mode.
The spherical surface of the cup sleeve is a smooth curved surface, and the diameters of the spherical surfaces of the cup sleeve are slightly increased from left to right (as shown in the abstract attached drawing) so as to facilitate guiding; when the cup sleeve is used as a transmission shaft, the spherical surface of each cup sleeve can be ground to increase friction force, so that the transmitted torque is increased, and the transmitted load can be increased on the premise of meeting the flexibility by other modes such as a one-way cambered surface sliding key and the like.
The left end face of the first cup sleeve at the left end is a plane, a counter bore is formed in the left end face so as to facilitate installation of the gasket 3, and a boss or a key groove can be manufactured on the left end face to be connected with other shafts as required.
The long steel sleeve 13 is fastened and connected with the base shaft 11 through threads, and other fixing and adjusting modes are adopted for connection in practical application.
The cup sleeve connected with the base shaft 11 is fixedly connected with the base shaft 11 through a counter bore in the concave spherical surface through a bolt, and other connection modes such as key connection, welding or riveting can be adopted in practical application.
Claims (7)
1. A multi-body flexible cardan shaft with self-adaptability, characterized in that: the novel anti-theft pull cable comprises a base shaft (11) and a pull cable (2), wherein a short steel sleeve (1) and a long steel sleeve (13) are respectively fixed at two ends of the pull cable (2), and at least one left cup sleeve (4), one right cup sleeve (10) and a middle cup sleeve group (32) are sleeved on the portion, between the short steel sleeve (1) and the long steel sleeve (13), of the pull cable (2); the long steel sleeve (13) is fixedly connected with the base shaft (11).
2. The multi-body flexible cardan shaft with self-adaptability according to claim 1, wherein: middle glass cover group (32) include glass cover (5) in the middle of at least one, and middle glass cover (5) are the double sphere structure of the central line coincidence of centre of sphere and cable (2), double sphere includes two spheres of ectosphere and interior sphere, middle glass cover (5) are flexible axle structure, and two centre of sphere intervals are the effective thickness of middle glass cover (5), and the interior sphere coincidence of glass cover (5) in the middle of adjacent.
3. The multi-body flexible cardan shaft with self-adaptability according to claim 2, wherein: the radii of the inner spherical surface and the outer spherical surface are equal, gradually increased or decreased.
4. The multi-body flexible cardan shaft with self-adaptability according to claim 1, wherein: one end of the left cup sleeve (4) and one end of the right cup sleeve (10) are plane, and the other end of the left cup sleeve and the other end of the right cup sleeve are spherical.
5. The multi-body flexible cardan shaft with self-adaptability according to claim 1, wherein: and a gasket (3) is arranged on the inhaul cable (2).
6. The multi-body flexible cardan shaft with self-adaptability according to claim 1, wherein: the long steel sleeve (13) is in threaded connection with the base shaft (11).
7. The multi-body flexible cardan shaft with self-adaptability according to claim 1, wherein: the front end face of the base shaft (11) is a plane, and threaded holes or key grooves are uniformly distributed in the circumferential direction of the base shaft, so that the base shaft is fixedly connected with adjacent cup sleeves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910310996.9A CN111828459A (en) | 2019-04-18 | 2019-04-18 | Multi-body flexible cardan shaft with self-adaptability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910310996.9A CN111828459A (en) | 2019-04-18 | 2019-04-18 | Multi-body flexible cardan shaft with self-adaptability |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111828459A true CN111828459A (en) | 2020-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910310996.9A Pending CN111828459A (en) | 2019-04-18 | 2019-04-18 | Multi-body flexible cardan shaft with self-adaptability |
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| Country | Link |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2140338A (en) * | 1983-04-20 | 1984-11-28 | Stockton Eng Ltd | Flexible tube bending mandrel |
| JP2000126190A (en) * | 1998-10-28 | 2000-05-09 | Suma Hisayoshi | Tool for fitting and supporting surgical instrument |
| EP1059462A1 (en) * | 1999-06-08 | 2000-12-13 | Luciano Migliori | Flexible push-pull drive device |
| CN210240282U (en) * | 2019-04-18 | 2020-04-03 | 成都飞机工业（集团）有限责任公司 | Multi-body flexible cardan shaft with self-adaptability |
-
2019
- 2019-04-18 CN CN201910310996.9A patent/CN111828459A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2140338A (en) * | 1983-04-20 | 1984-11-28 | Stockton Eng Ltd | Flexible tube bending mandrel |
| JP2000126190A (en) * | 1998-10-28 | 2000-05-09 | Suma Hisayoshi | Tool for fitting and supporting surgical instrument |
| EP1059462A1 (en) * | 1999-06-08 | 2000-12-13 | Luciano Migliori | Flexible push-pull drive device |
| CN210240282U (en) * | 2019-04-18 | 2020-04-03 | 成都飞机工业（集团）有限责任公司 | Multi-body flexible cardan shaft with self-adaptability |
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