CN111981031B - Direction adjustment equipment accessory that medical field used - Google Patents
Direction adjustment equipment accessory that medical field used Download PDFInfo
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- CN111981031B CN111981031B CN202010927856.9A CN202010927856A CN111981031B CN 111981031 B CN111981031 B CN 111981031B CN 202010927856 A CN202010927856 A CN 202010927856A CN 111981031 B CN111981031 B CN 111981031B
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- piston
- rod
- shell
- connecting rod
- piston column
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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
- F16C11/00—Pivots; Pivotal connections
- F16C11/04—Pivotal connections
- F16C11/06—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints
- F16C11/0604—Construction of the male part
- F16C11/0609—Construction of the male part made from two or more parts
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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
- F16C11/00—Pivots; Pivotal connections
- F16C11/04—Pivotal connections
- F16C11/06—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints
- F16C11/0695—Mounting of ball-joints, e.g. fixing them to a connecting rod
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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
- F16C11/00—Pivots; Pivotal connections
- F16C11/04—Pivotal connections
- F16C11/10—Arrangements for locking
Abstract
The invention belongs to the technical field of universal rotation of medical instruments, and particularly relates to a direction adjusting equipment fitting for the medical field, which comprises a first connecting rod, a second connecting rod and a hydraulic cylinder, wherein a universal joint device has all functions of a spherical hinge; the first connecting rod and the second connecting rod achieve the self-locking function; when the piston rod designed in the invention rotates relative to the piston shell, the limiting plate on the piston rod is limited by the clamping plate arranged on the upper end surface of the piston column outer sleeve, the rotating angle is less than 360 degrees, the phenomenon that the internal thread on the thread sleeve arranged on the piston inner shell is separated from the external thread on the piston rod in the process that the piston rod rotates relative to the piston inner shell is prevented, and the safety of the device is improved.
Description
Technical Field
The invention belongs to the technical field of universal rotation of medical instruments, and particularly relates to a direction adjusting equipment accessory used in the medical field.
Background
The existing medical field uses the support with universal function to control the space position and needs a plurality of hinges to realize, if the support is simply realized by two-dimensional hinges, a plurality of two-dimensional hinge devices are needed, thus the structure of the support is complex, the support is not easy to control, and the operation is troublesome; if the spherical hinge is used in the medical field, the spherical hinge needs to be self-locked in the using process, so that the design of the self-locking spherical hinge for the bracket in the medical field is very necessary.
The invention designs a direction adjusting equipment accessory used in the medical field to solve the problems.
Disclosure of Invention
In order to solve the defects in the prior art, the invention discloses a direction adjusting equipment fitting for the medical field, which is realized by adopting the following technical scheme.
The utility model provides a direction adjustment equipment accessory that medical field used which characterized in that: the hydraulic cylinder comprises a first connecting rod, a second connecting rod, a hydraulic cylinder, a first fixing rod and a second fixing rod, wherein a first spherical hinge shell is arranged at one end of the first connecting rod; the first connecting rod is hinged with the second connecting rod through the matching of the first spherical hinge shell and a second spherical hinge shell on the second connecting rod; the first connecting rod and the second connecting rod form a spherical hinge structure; the upper end of the first fixed rod is fixedly arranged on the inner circular surface of the first spherical hinge shell, the lower end of the second fixed rod is fixedly arranged on the inner end surface of the second connecting rod, the upper end of the hydraulic cylinder is arranged at the lower end of the first fixed rod through a cross universal joint, and the lower end of the hydraulic cylinder is arranged at the upper end of the second fixed rod through a cross universal joint; when the first connecting rod swings relative to the second connecting rod, the first fixing rod arranged on the first connecting rod swings relative to the second fixing rod arranged on the second connecting rod, and the upper end and the lower end of the hydraulic cylinder are respectively arranged on the first fixing rod and the second fixing rod through a cross universal joint, so that when the first connecting rod swings relative to the second connecting rod, the hydraulic cylinder can swing under the action of the two cross universal joints to adapt to the swing of the first connecting rod relative to the second connecting rod.
The hydraulic cylinder comprises a piston shell, a piston rod and a telescopic piston column, wherein the piston shell is elliptical, a second round opening is formed in the upper end face of the piston shell, a first round opening is formed in the lower end face of the piston shell, and the lower end of the piston shell is mounted at the upper end of a second fixed rod through a cross universal joint; the upper end of the piston rod is arranged at the lower end of the first fixed rod through a cross universal joint, the lower end of the piston rod penetrates through the upper end face of the piston shell and is positioned in the piston shell, and the lower end of the piston rod is provided with external threads; the telescopic piston column is arranged at the lower end of the piston rod and is in sliding fit with the inner circular surface of the piston shell; when the first connecting rod swings relative to the second connecting rod, the distance between the two cross universal joints for mounting the hydraulic cylinder is changed; the hydraulic cylinder can stretch out and draw back due to the change of the distance between the two cross universal joints, namely, the piston rod drives the telescopic piston column to slide in the piston shell; the telescopic piston column slides in the piston shell to extrude liquid in the piston shell, so that the liquid on the upper side and the liquid on the lower side of the telescopic piston column are communicated with each other through a second liquid pipe; according to the invention, the first liquid pipe is connected to the second liquid pipe, the switch valve is installed on the first liquid pipe, and the other end of the first liquid pipe is connected with the elastic liquid bag; the difference of volume change occupied by liquid on the upper side and the lower side of the telescopic piston column caused by the piston rod in the sliding process of the telescopic piston column is compensated through the expansion and contraction of the elastic liquid bag; if the channel between the elastic liquid bag and the second liquid pipe is closed, the telescopic piston column cannot normally slide up and down in the piston shell, namely, the hydraulic cylinder cannot be telescopic, and the first connecting rod cannot swing relative to the second connecting rod.
The telescopic piston column comprises a piston column outer sleeve, a piston column inner shell and a threaded sleeve, wherein the piston column outer sleeve and the piston column inner shell are elliptical, the upper end of the piston column outer sleeve is arranged on the piston rod in a rotating fit mode, and the piston rod moves up and down to drive the piston column outer sleeve to slide up and down; the lower end of the threaded sleeve is fixedly arranged on the inner end surface of the piston column inner shell, and the inner circular surface of the threaded sleeve is provided with internal threads; the piston post inner shell is installed at the lower end of the piston rod through the thread fit of the internal thread on the thread bush and the external thread on the piston rod, and the upper end of the piston post inner shell is nested and installed at the inner side of the piston post outer sleeve.
Because the first connecting rod and the second connecting rod form the spherical hinge, when the first connecting rod drives the piston rod to rotate relative to the second connecting rod, the piston shell, the piston column outer sleeve and the piston column inner shell are all elliptic cylinders, and the telescopic piston column is in sliding fit with the piston shell, so that the telescopic piston column can not rotate relative to the piston shell, the piston column inner shell can not rotate relative to the piston column outer sleeve, and the piston rod is matched with the thread bush arranged on the piston column inner shell through threads, so that the piston rod rotates to make the inner shell of the piston column stretch relative to the outer sleeve of the piston column, the volume occupied by the liquid in the space below the telescopic piston column in the piston shell is changed, the difference of volume change occupied by liquid on the upper side and the lower side of the telescopic piston column in the process that the first connecting rod rotates relative to the second connecting rod is compensated through the stretching of the elastic liquid bag; the passage between the elastic liquid bag and the second liquid pipe is in a closed state, liquid on the upper side and the lower side of the telescopic piston column in the piston shell can not circulate in an equivalent manner, namely, the inner shell of the piston column can not be telescopic relative to the outer sleeve of the piston column, and the piston rod and the first connecting rod can not normally rotate relative to the second connecting rod.
A sliding sealing device is arranged between the piston rod and the piston shell, a sliding sealing device is arranged between the telescopic piston column and the piston shell, and a sliding sealing device is arranged between the piston column inner shell and the piston column outer sleeve.
The upper end of the second liquid pipe is fixedly arranged in a second round hole formed in the piston shell, the lower end of the second liquid pipe is fixedly arranged in a first round hole formed in the piston shell, one end of the first liquid pipe is connected with the second liquid pipe, and the other end of the first liquid pipe penetrates through the round hole formed in the second connecting rod and is positioned outside the second connecting rod; one end of the first liquid pipe penetrating through the second connecting rod is connected with an elastic liquid bag; the first liquid pipe is provided with a switch valve; the switch valve is used for controlling the communication state of the second liquid pipe and the elastic liquid bag, closing a channel between the second liquid pipe and the elastic liquid bag of the switch valve, opening the switch valve and opening a channel between the second liquid pipe and the elastic liquid bag.
The invention reduces the degree of freedom of the hydraulic cylinder in the swinging process through the cross universal joints, and the hydraulic cylinder can not rotate automatically under the action of the two cross universal joints, thereby improving the self-locking efficiency of the device.
As a further improvement of the technology, a fixed sleeve is fixedly arranged on the upper end surface of the piston shell, and two first sealing rings which are distributed up and down are arranged between the fixed sleeve and the piston rod; the first sealing ring has the function of sealing the sliding of the piston rod and the piston shell.
As a further improvement of the technology, two second sealing rings which are distributed up and down are arranged between the outer circular surface of the piston column outer sleeve and the inner circular surface of the piston shell; the second sealing ring plays a sealing role in the piston column outer sleeve and the piston shell.
As a further improvement of the present technology, the cross universal joint comprises a first rotating shaft, a connecting block, a first hinge joint, a second hinge joint and a second rotating shaft, wherein two first rotating shafts are symmetrically installed on two symmetrically distributed side surfaces on the connecting block, and two second rotating shafts are symmetrically installed on the other two symmetrically distributed side surfaces on the connecting block; the first hinge joint is provided with two symmetrically distributed support lugs, the first hinge joint is arranged on the connecting block through the matching of the two support lugs and the two second rotating shafts, the second hinge joint is provided with two symmetrically distributed support lugs, and the second hinge joint is arranged on the connecting block through the matching of the two support lugs and the two first rotating shafts.
As a further improvement of the technology, a clamping plate is fixedly arranged on the upper end surface of the piston column outer sleeve, a limiting plate is fixedly arranged on the outer circular surface of the piston rod, and the limiting plate is matched with the clamping plate; in the invention, the piston shell, the piston column outer sleeve and the piston column inner shell are all elliptic cylinders, and the telescopic piston column is in sliding fit with the piston shell, so that the telescopic piston column cannot rotate relative to the piston shell, and meanwhile, the piston column inner shell cannot rotate relative to the piston column outer sleeve; when the piston rod is rotated relative to the piston shell, the piston rod can drive the limiting plate to rotate, the rotating angle is smaller than 360 degrees, the effect of the limiting plate is that the internal thread on the thread bush arranged on the piston inner shell is separated from the external thread on the piston rod in the process of rotating relative to the piston inner shell, and the piston rod cannot normally rotate relative to the piston inner shell.
As a further improvement of the technology, two vertically distributed third sealing rings are arranged between the piston column inner shell and the piston column outer sleeve; the third sealing ring plays a sealing role between the piston column inner shell and the piston column outer sleeve.
As a further improvement of the technology, the inner end surface of the piston column outer sleeve is provided with a driving ring sleeve, and the outer circular surface of the piston rod is provided with a driving disc; the piston column outer sleeve is arranged on the piston rod through the driving ring sleeve and the driving disc in a rotating fit mode, the piston rod can rotate relative to the piston column outer sleeve through the driving disc, and meanwhile the piston rod can drive the piston column outer sleeve to move up and down when moving up and down.
As a further improvement of the technology, the driving ring sleeve is connected with the driving disc through a bearing.
As a further improvement of the present technology, the second liquid pipe is a rigid pipe; the spatial arrangement of the hard tube ensures that the piston housing does not interfere with the second liquid tube during the swinging process.
As a further improvement of the technology, the limiting plate is fixedly arranged on the piston rod in a welding mode, and the clamping plate is fixedly arranged on the upper end face of the piston column outer sleeve in a welding mode.
The piston rod and the piston column outer sleeve are provided with a rotary sealing structure, namely a dynamic seal, and a rotary rubber sealing ring is preferably arranged between the piston rod and the piston column outer sleeve.
Compared with the traditional universal rotation technology of medical instruments, the universal rotation technology has the following beneficial effects:
1. the universal joint device has all functions of a spherical hinge, and compared with two-dimensional hinge, the universal joint device is simple in structure, convenient to operate and easy to control.
2. Compared with the traditional spherical hinge, the device can control the relative swing and rotation between the first connecting rod and the second connecting rod by controlling the switch valve between the second liquid pipe and the elastic liquid bag; so that the first connecting rod and the second connecting rod achieve the self-locking function.
3. If be applied to the support of medical field with the device, compare in traditional support through two-dimentional articulated and universal articulated cooperation use, this support operation gets up simpler, and easy control has improved staff's work efficiency.
4. According to the device designed by the invention, the same elastic liquid sac can be used by a plurality of hydraulic cylinders, namely, the self-locking of a plurality of hinge points can be controlled simultaneously by controlling the switch of one liquid sac.
5. The clamping plate and the limiting plate are designed, so that when the piston rod rotates relative to the piston shell, the limiting plate on the piston rod is limited by the clamping plate arranged on the upper end surface of the piston column outer shell, the rotating angle is smaller than 360 degrees, the phenomenon that the inner thread on the threaded sleeve arranged on the piston inner shell is separated from the outer thread on the piston rod in the process that the piston rod rotates relative to the piston inner shell is avoided, the piston rod cannot normally rotate relative to the piston inner shell, people cannot cause the failure of the device because the first connecting rod is always driven to rotate towards the uniform direction relative to the second connecting rod in the using process, and the safety of the device is improved.
6. The hydraulic cylinder only has a sliding sealing relation with the piston rod, and the hydraulic cylinder has low sealing cost and strong reliability.
Drawings
Fig. 1 is an external view of an entire part.
Fig. 2 is a schematic view of the overall component distribution.
Fig. 3 is a schematic view of the internal structural distribution of the whole component.
Fig. 4 is a schematic view of the internal structure installation of the integral component.
Fig. 5 is a schematic view of the first link and the second link being engaged.
FIG. 6 is a schematic cross-gimbal layout.
Fig. 7 is a schematic view of a cross-shaped gimbal structure.
Fig. 8 is a schematic view of the connection of a first liquid tube and a second liquid tube.
Fig. 9 is a schematic view of the hydraulic cylinder structure.
Fig. 10 is a schematic distribution diagram of the internal structure of the hydraulic cylinder.
Fig. 11 is a schematic view of the piston housing construction.
Fig. 12 is a schematic view of a telescoping piston post installation.
Fig. 13 is a schematic view of a telescoping piston column configuration.
Fig. 14 is a schematic view of the piston rod construction.
Fig. 15 is a schematic view of a threaded sleeve installation.
Fig. 16 is a schematic view of the installation of the on-off valve.
Number designation in the figures: 1. a first link; 2. a second link; 3. a first liquid pipe; 4. a hydraulic cylinder; 5. a cross universal joint; 6. a circular hole; 7. a first spherical hinge housing; 8. a second spherical hinge housing; 9. a first fixing lever; 10. a second fixing bar; 11. a piston housing; 12. a piston rod; 13. a first rotating shaft; 14. connecting the squares; 15. a first hinge joint; 16. a second hinge joint; 17. a second rotating shaft; 18. a second liquid pipe; 19. a telescoping piston post; 20. a first round mouth; 21. a second round mouth; 22. a first seal ring; 23. fixing a sleeve; 24. clamping a plate; 25. a limiting plate; 26. a piston column jacket; 27. a piston post inner housing; 28. a drive disk; 29. a second seal ring; 30. a third seal ring; 31. a threaded sleeve; 32. an external thread; 33. a drive ring sleeve; 34. an internal thread; 35. an on-off valve; 36. an elastic liquid sac.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples or figures are illustrative of the present invention and are not intended to limit the scope of the present invention.
As shown in fig. 1 and 2, it includes a first connecting rod 1, a second connecting rod 2, a hydraulic cylinder 4, a first fixing rod 9, a second fixing rod 10, wherein as shown in fig. 5, one end of the first connecting rod 1 has a first spherical hinge housing 7, the second connecting rod 2 is hollow, one end of the second connecting rod 2 has a second spherical hinge housing 8, and a circular hole 6 is opened on the outer circular surface of the second connecting rod 2; the first connecting rod 1 is hinged with the second connecting rod 2 through the matching of a first spherical hinge shell 7 and a second spherical hinge shell 8 on the second connecting rod 2; the first connecting rod 1 and the second connecting rod 2 form a spherical hinge structure; as shown in fig. 3 and 6, the upper end of the first fixing rod 9 is fixedly installed on the inner circular surface of the first spherical hinge housing 7, as shown in fig. 4 and 6, the lower end of the second fixing rod 10 is fixedly installed on the inner end surface of the second connecting rod 2, as shown in fig. 3 and 4, the upper end of the hydraulic cylinder 4 is installed on the lower end of the first fixing rod 9 through a cross universal joint 5, and the lower end of the hydraulic cylinder 4 is installed on the upper end of the second fixing rod 10 through a cross universal joint 5; when the first connecting rod 1 swings relative to the second connecting rod 2, the first fixing rod 9 installed on the first connecting rod 1 swings relative to the second fixing rod installed on the second connecting rod 2, and the upper end and the lower end of the hydraulic cylinder 4 are respectively installed on the first fixing rod 9 and the second fixing rod 10 through the cross universal joint 5, so when the first connecting rod 1 swings relative to the second connecting rod 2, the hydraulic cylinder 4 swings under the action of the two cross universal joints 5 to adapt to the swing of the first connecting rod 1 relative to the second connecting rod 2.
As shown in fig. 9 and 10, the hydraulic cylinder 4 includes a piston housing 11, a piston rod 12, and a telescopic piston column 19, wherein as shown in fig. 6 and 11, the piston housing 11 is elliptical, a second circular opening 21 is formed on an upper end surface of the piston housing 11, a first circular opening 20 is formed on a lower end surface of the piston housing 11, and as shown in fig. 11, a lower end of the piston housing 11 is mounted on an upper end of a second fixing rod through a universal joint 5; as shown in fig. 4, the upper end of the piston rod 12 is mounted on the lower end of the first fixing rod through a cross universal joint 5, as shown in fig. 10, the lower end of the piston rod 12 passes through the upper end surface of the piston housing 11 to be located inside the piston housing 11, and as shown in fig. 14, the lower end of the piston rod 12 has an external thread 32; as shown in fig. 9, a telescopic piston column 19 is installed at the lower end of the piston rod 12, and the telescopic piston column 19 is slidably fitted with the inner circumferential surface of the piston housing 11; when the first connecting rod 1 swings relative to the second connecting rod 2, the distance between the two cross universal joints 5 provided with the hydraulic cylinder 4 also changes; the change of the distance between the two cross universal joints 5 can lead the hydraulic cylinder 4 to stretch, namely, the piston rod 12 drives the telescopic piston column 19 to slide in the piston shell 11; the telescopic piston column 19 slides in the piston shell 11 to press the liquid in the piston shell 11, so that the liquid on the upper side and the lower side of the telescopic piston column 19 are communicated with each other through the second liquid pipe 18; according to the invention, the first liquid pipe 3 is connected to the second liquid pipe 18, the switch valve 35 is installed on the first liquid pipe 3, and the elastic liquid bag 36 is connected to the other end of the first liquid pipe 3, when the telescopic piston column 19 moves up and down, the volume occupied by the liquid on the upper side and the lower side of the telescopic piston column 19 is different due to the existence of the piston rod 12, in this case, the liquid on the upper side and the lower side of the telescopic piston column 19 cannot flow in equal quantity in the process that the telescopic piston column 19 slides relative to the piston housing 11, so the elastic liquid bag 36 is connected to the second liquid pipe 18 connected to the upper end and the lower end of the piston housing 11 through the first liquid pipe 3, and redundant liquid flows into the elastic liquid bag 36 through the first liquid pipe 3 or the liquid in the elastic liquid bag 36 flows into the piston housing 11; the difference of volume change occupied by liquid at the upper side and the lower side of the telescopic piston column 19 caused by the piston rod 12 in the sliding process of the telescopic piston column 19 is compensated by the expansion and contraction of the elastic liquid bag 36; if the passage between the elastic liquid bag 36 and the second liquid tube 18 is closed, the telescopic piston column 19 cannot normally slide up and down in the piston housing 11, i.e. the hydraulic cylinder 4 cannot be telescopic, and the first connecting rod 1 cannot swing relative to the second connecting rod 2.
As shown in fig. 13 and 15, the telescopic piston column 19 includes a piston column outer sleeve 26, a piston column inner shell 27, and a threaded sleeve 31, wherein as shown in fig. 12, the piston column outer sleeve 26 and the piston column inner shell 27 are both elliptical, the upper end of the piston column outer sleeve 26 is mounted on the piston rod 12 by rotating fit, and the piston rod 12 moves up and down to drive the piston column outer sleeve 26 to slide up and down; as shown in fig. 15, the lower end of the threaded sleeve 31 is fixedly mounted on the inner end surface of the piston cylinder inner housing 27, and the inner circumferential surface of the threaded sleeve 31 has an internal thread 34; as shown in fig. 13, the piston cylinder inner housing 27 is mounted on the lower end of the piston rod 12 by the threaded engagement of the internal threads 34 on the threaded sleeve 31 with the external threads 32 on the piston rod 12, and the upper end of the piston cylinder inner housing 27 is nested inside the piston cylinder outer housing 26.
Because the first connecting rod 1 and the second connecting rod 2 form a spherical hinge, when the first connecting rod 1 drives the piston rod 12 to rotate relative to the second connecting rod 2, because the piston housing 11, the piston column outer sleeve 26 and the piston column inner housing 27 are all elliptical columns, and the telescopic piston column 19 is in sliding fit with the piston housing 11, the telescopic piston column 19 cannot rotate relative to the piston housing 11, meanwhile, the piston column inner housing 27 cannot rotate relative to the piston column outer sleeve 26, and simultaneously, the piston rod 12 is in threaded fit with the threaded sleeve 31 arranged on the piston column inner housing 27, the piston rod 12 rotates to enable the piston column inner housing 27 to stretch relative to the piston column outer sleeve 26, so that the volume occupied by the liquid in the space below the telescopic piston column 19 in the piston housing 11 is changed, and the expansion and contraction of the elastic liquid bag 36 compensate for the rotation of the first connecting rod 1 relative to the second connecting rod 2, the volume occupied by the liquid on the upper side and the lower side of the telescopic piston column 19 is different; the passage between the elastic liquid bag 36 and the second liquid tube 18 is in a closed state, and the liquid on the upper and lower sides of the telescopic piston column 19 in the piston housing 11 cannot flow equally, i.e. the piston column inner housing 27 cannot be telescopic relative to the piston column outer housing 26, and the piston rod 12 and the first connecting rod 1 cannot normally rotate relative to the second connecting rod 2.
A sliding seal device is arranged between the piston rod 12 and the piston housing 11, a sliding seal device is arranged between the telescopic piston column 19 and the piston housing 11, and a sliding seal device is arranged between the piston column inner housing 27 and the piston column outer housing 26.
As shown in fig. 8 and 10, the upper end of the second liquid pipe 18 is fixedly installed in the second circular opening 21 opened in the piston housing 11, the lower end of the second liquid pipe 18 is fixedly installed in the first circular opening 20 opened in the piston housing 11, one end of the first liquid pipe 3 is connected to the second liquid pipe 18, and the other end of the first liquid pipe 3 passes through the circular hole 6 opened in the second connecting rod 2 and is located outside the second connecting rod 2; as shown in fig. 16, an elastic liquid bag 36 is connected to one end of the first liquid pipe 3 passing through the second link 2; the first liquid pipe 3 is provided with a switch valve 35; the switch valve 35 is used for controlling the communication state of the second liquid tube 18 and the elastic liquid bag 36, the switch valve 35 is closed, the passage between the second liquid tube 18 and the elastic liquid bag 36 is closed, the switch valve 35 is opened, and the passage between the second liquid tube 18 and the elastic liquid bag 36 is opened.
According to the invention, the degree of freedom of the hydraulic cylinder 4 in the swinging process is reduced through the cross universal joints 5, the hydraulic cylinder 4 cannot rotate automatically under the action of the two cross universal joints 5, and the self-locking efficiency of the device is improved.
As shown in fig. 11, a fixing sleeve 23 is fixedly mounted on the upper end surface of the piston housing 11, and two vertically distributed first sealing rings 22 are mounted between the fixing sleeve 23 and the piston rod 12; the first seal 22 is used to seal the piston rod 12 and the piston housing 11 against sliding movement.
The piston rod and the piston column outer sleeve are provided with a rotary sealing structure, namely a dynamic seal, and a rotary rubber sealing ring is preferably arranged between the piston rod and the piston column outer sleeve.
As shown in fig. 13, two second sealing rings 29 are installed between the outer circumferential surface of the piston cylinder outer sleeve 26 and the inner circumferential surface of the piston housing 11; the second sealing ring 29 seals the piston rod jacket 26 and the piston housing 11.
As shown in fig. 7, the universal joint 5 includes a first rotating shaft 13, a connecting block 14, a first joint 15, a second joint 16, and a second rotating shaft 17, wherein two first rotating shafts 13 are symmetrically installed on two symmetrically distributed side surfaces of the connecting block 14, and two second rotating shafts 17 are symmetrically installed on the other two symmetrically distributed side surfaces of the connecting block 14; the first hinge joint 15 is provided with two symmetrically distributed support lugs, the first hinge joint 15 is arranged on the connecting block 14 through the matching of the two support lugs and the two second rotating shafts 17, the second hinge joint 16 is provided with two symmetrically distributed support lugs, and the second hinge joint 16 is arranged on the connecting block 14 through the matching of the two support lugs and the two first rotating shafts 13.
As shown in fig. 12, a snap plate 24 is fixedly mounted on the upper end surface of the piston post outer sleeve 26, a limit plate 25 is fixedly mounted on the outer circumferential surface of the piston rod 12, and the limit plate 25 is matched with the snap plate 24; in the invention, because the piston shell 11, the piston column outer sleeve 26 and the piston column inner shell 27 are all elliptic cylinders, and the telescopic piston column 19 is in sliding fit with the piston shell 11, the telescopic piston column 19 cannot rotate relative to the piston shell 11, and meanwhile, the piston column inner shell 27 cannot rotate relative to the piston column outer sleeve 26; when the piston rod 12 rotates relative to the piston shell 11, the piston rod 12 can drive the limiting plate 25 to rotate, but the limiting plate 25 is limited by the clamping plate 24, the rotating angle range is less than 360 degrees, and the internal thread 34 on the thread bush 31 arranged on the piston inner shell is separated from the external thread 32 on the piston rod 12 in the process that the piston rod 12 rotates relative to the piston inner shell, so that the piston rod 12 cannot normally rotate relative to the piston inner shell.
As shown in fig. 13, two vertically distributed third seal rings 30 are installed between the piston column inner housing 27 and the piston column outer housing 26; the third seal ring 30 seals between the piston post inner housing 27 and the piston post outer housing 26.
As shown in fig. 15, the inner end surface of the piston post outer sleeve 26 is provided with a driving ring sleeve 33, and as shown in fig. 14, the outer circumferential surface of the piston rod 12 is provided with a driving disc 28; as shown in fig. 13, the piston column outer sleeve 26 is mounted on the piston rod 12 by the rotational fit of the driving ring sleeve 33 and the driving disc 28, the piston rod 12 can rotate relative to the piston column outer sleeve 26 by the driving disc 28, and the piston rod 12 can drive the piston column outer sleeve 26 to move up and down when moving up and down.
The driving ring sleeve 33 is connected with the driving disc 28 through a bearing.
The second liquid pipe 18 is a hard pipe; the spatial arrangement of the hard tubes ensures that the piston housing 11 does not interfere with the second fluid tube 18 during oscillation. The first liquid pipe is a hose.
The limiting plate 25 is fixedly mounted on the piston rod 12 by welding, and the snap-gauge 24 is fixedly mounted on the upper end surface of the piston column casing 26 by welding.
The sliding sealing device can be realized by other prior arts to realize sealing.
The specific working process is as follows: when the bracket self-locking device designed by the invention is used, the first connecting rod 1 is controlled to swing relative to the second connecting rod 2 when the angle is required to be adjusted, and when the first connecting rod 1 swings and rotates relative to the second connecting rod 2, the distance between two cross universal joints 5 provided with hydraulic cylinders 4 can also be changed; the change of the distance between the two cross universal joints 5 can make the hydraulic cylinder 4 stretch, namely the piston rod 12 drives the telescopic piston column 19 to slide in the piston shell 11, the telescopic piston column 19 slides in the piston shell 11 to extrude the liquid in the piston shell 11, so that the liquid on the upper side and the lower side of the telescopic piston column 19 can mutually circulate through the second liquid pipe 18, and the difference of the volume change occupied by the liquid on the upper side and the lower side of the telescopic piston column 19 in the sliding process of the telescopic piston column 19 or the telescopic process of the telescopic piston column 19 can be compensated through the stretching of the elastic liquid bag 36; when the first connecting rod 1 drives the piston rod 12 to rotate relative to the second connecting rod 2, the piston rod 12 rotates to enable the piston column inner shell 27 to stretch relative to the piston column outer sleeve 26, so that the volume occupied by the liquid in the space below the telescopic piston column 19 in the piston shell 11 is changed, and the difference of the volume occupied by the liquid on the upper side and the lower side of the telescopic piston column 19 in the rotating process of the first connecting rod 1 relative to the second connecting rod 2 is compensated through the stretching of the elastic liquid bag 36; after the adjustment is completed, the on-off valve 35 installed on the first liquid pipe 3 is controlled to be closed, in this state, the liquid on the upper side and the lower side of the telescopic piston column 19 in the piston housing 11 cannot normally circulate, the telescopic piston column 19 cannot normally slide up and down in the piston housing 11, and meanwhile, the telescopic piston column 19 cannot be stretched, that is, the hydraulic cylinder 4 cannot be stretched, and the first connecting rod 1 cannot swing and rotate relative to the second connecting rod 2; the device achieves a self-locking function.
In summary, the following steps: the universal joint device has all functions of a spherical hinge, and compared with two-dimensional hinge, the universal joint device is simple in structure, convenient to operate and easy to control; compared with the traditional spherical hinge, the device can control the relative swing and rotation between the first connecting rod 1 and the second connecting rod 2 by controlling the switch valve 35 between the second liquid pipe 18 and the elastic liquid bag 36; the first connecting rod 1 and the second connecting rod 2 achieve the self-locking function; if the device is applied to a bracket in the medical field, compared with the traditional bracket which is used by matching two-dimensional hinge joint and universal hinge joint, the bracket is simpler to operate and easy to control, and the working efficiency of workers is improved; according to the device designed by the invention, the same elastic liquid sac 36 can be used by a plurality of hydraulic cylinders 4, namely, the self-locking of a plurality of hinge points can be controlled simultaneously by controlling the switch of one liquid sac; according to the invention, the catch plate 24 and the limit plate 25 are designed, so that when the piston rod 12 rotates relative to the piston shell 11, the catch plate 24 arranged on the upper end surface of the piston column outer sleeve 26 limits the limit plate 25 on the piston rod 12, the piston rod 12 can only rotate towards one direction, the rotation angle is smaller than 360 degrees, the internal thread 34 on the thread sleeve 31 arranged on the piston inner shell is separated from the external thread 32 on the piston rod 12 in the process that the piston rod 12 rotates relative to the piston inner shell, the piston rod 12 can not normally rotate relative to the piston shell 11, people can not cause the device to malfunction because the first connecting rod 1 is always driven to rotate towards the uniform direction relative to the second connecting rod 2 in the use process, and the safety of the device is improved.
Claims (7)
1. The utility model provides a direction adjustment equipment accessory that medical field used which characterized in that: the hydraulic cylinder comprises a first connecting rod, a second connecting rod, a hydraulic cylinder, a first fixing rod and a second fixing rod, wherein a first spherical hinge shell is arranged at one end of the first connecting rod; the first connecting rod is hinged with the second connecting rod through the matching of the first spherical hinge shell and a second spherical hinge shell on the second connecting rod; the upper end of the first fixed rod is fixedly arranged on the inner circular surface of the first spherical hinge shell, the lower end of the second fixed rod is fixedly arranged on the inner end surface of the second connecting rod, the upper end of the hydraulic cylinder is arranged at the lower end of the first fixed rod through a cross universal joint, and the lower end of the hydraulic cylinder is arranged at the upper end of the second fixed rod through a cross universal joint;
the hydraulic cylinder comprises a piston shell, a piston rod and a telescopic piston column, wherein the piston shell is elliptical, a second round opening is formed in the upper end face of the piston shell, a first round opening is formed in the lower end face of the piston shell, and the lower end of the piston shell is mounted at the upper end of a second fixed rod through a cross universal joint; the upper end of the piston rod is arranged at the lower end of the first fixed rod through a cross universal joint, the lower end of the piston rod penetrates through the upper end face of the piston shell and is positioned in the piston shell, and the lower end of the piston rod is provided with external threads; the telescopic piston column is arranged at the lower end of the piston rod and is in sliding fit with the inner circular surface of the piston shell;
the telescopic piston column comprises a piston column outer sleeve, a piston column inner shell and a threaded sleeve, wherein the piston column outer sleeve and the piston column inner shell are elliptical, the upper end of the piston column outer sleeve is arranged on the piston rod in a rotating fit mode, and the piston rod moves up and down to drive the piston column outer sleeve to slide up and down; the lower end of the threaded sleeve is fixedly arranged on the inner end surface of the piston column inner shell, and the inner circular surface of the threaded sleeve is provided with internal threads; the piston column inner shell is arranged at the lower end of the piston rod through the thread matching of the internal thread on the thread bush and the external thread on the piston rod, and the upper end of the piston column inner shell is nested and arranged at the inner side of the piston column outer sleeve;
a sliding sealing device is arranged between the piston rod and the piston shell, a sliding sealing device is arranged between the telescopic piston column and the piston shell, and a sliding sealing device is arranged between the piston column inner shell and the piston column outer sleeve;
the upper end of the second liquid pipe is fixedly arranged in a second round hole formed in the piston shell, the lower end of the second liquid pipe is fixedly arranged in a first round hole formed in the piston shell, one end of the first liquid pipe is connected with the second liquid pipe, and the other end of the first liquid pipe penetrates through the round hole formed in the second connecting rod and is positioned outside the second connecting rod; one end of the first liquid pipe penetrating through the second connecting rod is connected with an elastic liquid bag; the first liquid pipe is provided with a switch valve;
the upper end surface of the piston column outer sleeve is fixedly provided with a clamping plate, the outer circular surface of the piston rod is fixedly provided with a limiting plate, and the limiting plate is matched with the clamping plate;
two third sealing rings which are distributed up and down are arranged between the piston column inner shell and the piston column outer sleeve;
the inner end surface of the piston column outer sleeve is provided with a driving ring sleeve, and the outer circular surface of the piston rod is provided with a driving disc; the piston column outer sleeve is arranged on the piston rod through the rotating fit of the driving ring sleeve and the driving disc.
2. A direction adjustment device accessory for use in the medical field according to claim 1, wherein: the upper end face of the piston shell is fixedly provided with a fixed sleeve, and two first sealing rings which are vertically distributed are arranged between the fixed sleeve and the piston rod.
3. A direction adjustment device accessory for use in the medical field according to claim 1, wherein: two second sealing rings which are distributed up and down are arranged between the outer circular surface of the piston column outer sleeve and the inner circular surface of the piston shell.
4. A direction adjustment device accessory for use in the medical field according to claim 1, wherein: the cross universal joint comprises a first rotating shaft, a connecting block, a first hinged joint, a second hinged joint and a second rotating shaft, wherein two first rotating shafts are symmetrically arranged on two symmetrically distributed side surfaces on the connecting block, and two second rotating shafts are symmetrically arranged on the other two symmetrically distributed side surfaces on the connecting block; the first hinge joint is provided with two symmetrically distributed support lugs, the first hinge joint is arranged on the connecting block through the matching of the two support lugs and the two second rotating shafts, the second hinge joint is provided with two symmetrically distributed support lugs, and the second hinge joint is arranged on the connecting block through the matching of the two support lugs and the two first rotating shafts.
5. A direction adjustment device accessory for use in the medical field according to claim 1, wherein: the driving ring sleeve is connected with the driving disc through a bearing.
6. A direction adjustment device accessory for use in the medical field according to claim 1, wherein: the second liquid pipe is a hard pipe.
7. A direction adjustment device accessory for use in the medical field according to claim 1, wherein: the limiting plate is fixedly arranged on the piston rod in a welding mode, and the clamping plate is fixedly arranged on the upper end face of the piston column outer sleeve in a welding mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010927856.9A CN111981031B (en) | 2019-10-08 | 2019-10-08 | Direction adjustment equipment accessory that medical field used |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910948494.9A CN110578746B (en) | 2019-10-08 | 2019-10-08 | Direction adjustment equipment accessory in medical field |
| CN202010927856.9A CN111981031B (en) | 2019-10-08 | 2019-10-08 | Direction adjustment equipment accessory that medical field used |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910948494.9A Division CN110578746B (en) | 2019-10-08 | 2019-10-08 | Direction adjustment equipment accessory in medical field |
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| Publication Number | Publication Date |
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| CN111981031A CN111981031A (en) | 2020-11-24 |
| CN111981031B true CN111981031B (en) | 2021-07-16 |
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| CN202010927856.9A Active CN111981031B (en) | 2019-10-08 | 2019-10-08 | Direction adjustment equipment accessory that medical field used |
| CN201910948494.9A Active CN110578746B (en) | 2019-10-08 | 2019-10-08 | Direction adjustment equipment accessory in medical field |
| CN202010927852.0A Active CN111981032B (en) | 2019-10-08 | 2019-10-08 | Direction adjustment equipment accessory that medical field used |
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| CN201910948494.9A Active CN110578746B (en) | 2019-10-08 | 2019-10-08 | Direction adjustment equipment accessory in medical field |
| CN202010927852.0A Active CN111981032B (en) | 2019-10-08 | 2019-10-08 | Direction adjustment equipment accessory that medical field used |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112643663B (en) * | 2020-12-21 | 2022-05-06 | 重庆三峡学院 | Artificial intelligence lift arm is with directional subassembly |
| CN113847356B (en) * | 2021-10-22 | 2022-05-17 | 朱哲枭 | Embedded hydraulic power universal joint |
| CN114562494B (en) * | 2022-04-24 | 2022-07-12 | 南通油神液压有限公司 | Durable hydraulic equipment capable of preventing multidirectional bearing |
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| ITPD20040227A1 (en) * | 2004-09-10 | 2004-12-10 | Lino Manfrotto & Co Spa | ADJUSTABLE HEAD FOR OPTICAL EQUIPMENT AND CINEMATOGRAPHIC PHOTOS |
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| PL2088955T3 (en) * | 2006-10-06 | 2011-07-29 | Tirex Surgical Gmbh | Lockable joint |
| JP4169162B1 (en) * | 2007-11-07 | 2008-10-22 | 荻野工業株式会社 | Ball joint manufacturing apparatus and manufacturing method |
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- 2019-10-08 CN CN202010927852.0A patent/CN111981032B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US3737130A (en) * | 1970-06-25 | 1973-06-05 | Slick Tripod Co Ltd | Hydraulically operated tripod head |
| CN101147006A (en) * | 2005-03-22 | 2008-03-19 | Zf腓特烈港股份公司 | Gimbal for automobile |
| CN103438337A (en) * | 2013-08-30 | 2013-12-11 | 营口奥匹维特新能源科技有限公司 | Bearing platform |
| CN105972411A (en) * | 2016-06-24 | 2016-09-28 | 深圳市威富多媒体有限公司 | Mounting bracket and monitoring equipment with mounting bracket |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN111981031A (en) | 2020-11-24 |
| CN111981032B (en) | 2021-08-03 |
| CN110578746B (en) | 2020-10-09 |
| CN111981032A (en) | 2020-11-24 |
| CN110578746A (en) | 2019-12-17 |
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Effective date of registration: 20220809 Address after: 311800 Zhisheng temple, Datang street, Zhuji City, Shaoxing City, Zhejiang Province Patentee after: SHAOTAN CHEMICAL FIBRE Corp. Address before: No. 777, Hongwu, Yunxi village, YINGDIAN Street Town, Zhuji City, Shaoxing City, Zhejiang Province, 311817 Patentee before: Zhang Loufeng |
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Denomination of invention: A kind of direction adjustment equipment accessories used in the medical field Effective date of registration: 20220815 Granted publication date: 20210716 Pledgee: Datang sub branch of Zhejiang Zhuji Rural Commercial Bank Co.,Ltd. Pledgor: SHAOTAN CHEMICAL FIBRE Corp. Registration number: Y2022980012564 |
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