CN109058217B - High-pressure large-swing-angle arc vane type swing oil cylinder structure - Google Patents
High-pressure large-swing-angle arc vane type swing oil cylinder structure Download PDFInfo
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- CN109058217B CN109058217B CN201811221756.3A CN201811221756A CN109058217B CN 109058217 B CN109058217 B CN 109058217B CN 201811221756 A CN201811221756 A CN 201811221756A CN 109058217 B CN109058217 B CN 109058217B
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Classifications
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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
- F15B15/12—Characterised by the construction of the motor unit of the oscillating-vane or curved-cylinder 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
-
- 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
- F15B15/26—Locking mechanisms
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- Engineering & Computer Science (AREA)
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- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Hydraulic Motors (AREA)
- Actuator (AREA)
Abstract
The invention discloses a high-pressure large-swing-angle arc vane type swing oil cylinder structure which comprises an oil cylinder body, an output shaft, a fixed arc vane assembly, a rotary arc vane assembly, a left floating arc sealing end cover, a right floating arc sealing end cover, a sealing piece and a fastening accessory, wherein the fixed arc vane assembly is arranged on the oil cylinder body; the output shaft is fixed on the axis of the cylinder body of the oil cylinder by a sliding bearing; the semicircular cambered surfaces on the left and right floating arc sealing end covers are opposite to the inner convex cylindrical surface of the cylinder body of the oil cylinder and the outer convex circumferential surface of the output shaft to form a closed annular inner cavity; the outer shapes of the fixed arc blade and the rotary arc blade are annular inner cavities, the fixed arc blade and the rotary arc blade are well matched with the annular inner cavities, the fixed arc blade assembly is fixed on the cylinder body of the oil cylinder through bolts, and the rotary arc blade assembly is fixed on the output shaft. The invention greatly improves the output torque under the same external dimension, the internal leakage is almost equal to zero, the rotation locking of the output shaft can be realized, and the volumetric efficiency is higher.
Description
Technical Field
The invention belongs to the technical field of mechanical equipment, relates to a swing oil cylinder, and in particular relates to a high-pressure large-swing-angle arc vane type swing oil cylinder structure.
Background
At present, the large swing angle swing oil cylinder mainly has two driving modes: double-screw driving swing oil cylinder; vane type swing oil cylinder. The double-screw driving swing oil cylinder can bear the pressure of more than 21MPa, the output swing angle is not limited by reasonably designing the screw length, but the transmission efficiency of the double-screw driving swing oil cylinder is low because the transmission is the rotary motion obtained by screw engagement conversion; under the condition of the same swing angle and output moment, the radial and axial dimensions of the swing arm are larger than those of the vane type swing oil cylinder, so the swing arm is not suitable for occasions with compact structural dimensions and high transmission efficiency, such as joints of robots. The vane type swing cylinder directly generates output swing torque through the action area of the vane, so that the transmission efficiency is high, the structure is compact, and the vane type swing cylinder is particularly suitable for occasions with compact structure size and high transmission efficiency.
The existing vane type swing oil cylinder mainly has the following problems: (1) low operating pressure, resulting in limited output torque; (2) The internal leakage is large, the rotation locking of the output shaft cannot be realized, and the application occasion is limited; (3) volumetric efficiency is too low.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides the high-pressure large-swing-angle arc vane type swing oil cylinder structure which can work at a pressure above 21MPa, greatly improves the output torque under the same external dimension, ensures that the internal leakage is almost equal to zero, can realize the rotation locking of an output shaft and has higher volumetric efficiency.
For this purpose, the invention adopts the following technical scheme:
a high-pressure large-swing-angle arc vane type swing oil cylinder structure comprises an oil cylinder body, an output shaft, a fixed arc vane assembly, a rotary arc vane assembly, a left floating arc sealing end cover, a left adjusting end cover, a right floating arc sealing end cover, a right adjusting end cover, a left axial bearing end cover, a right axial bearing end cover, a sealing piece and a fastening accessory;
the cylinder body of the oil cylinder is of a bilateral symmetry structure, a small hole is formed in the middle of the cylinder body, and two large holes are formed in the two ends of the cylinder body respectively to form a left inner hole shaft shoulder and a right inner hole shaft shoulder; the two ends of the large holes are respectively provided with a check ring groove for holes close to the end part of the cylinder body of the oil cylinder, and a first check ring for holes and a second check ring for holes are arranged in the grooves; o-shaped ring grooves are respectively arranged at the large holes at the two ends and close to the small holes, and a first O-shaped ring and a second O-shaped ring are arranged in the grooves;
the left floating arc-shaped sealing end cover and the right floating arc-shaped sealing end cover are axially provided with annular semicircular arc curved surfaces; an O-shaped ring groove is formed in the end face close to the annular semicircular arc curved surface, and a second O-shaped ring is arranged in the groove; the inner holes of the left floating arc-shaped sealing end cover and the right floating arc-shaped sealing end cover are respectively provided with a first sliding bearing and a second sliding bearing;
the output shaft is of a bilateral symmetry structure, a large-diameter shaft is arranged in the middle of the output shaft, and small-diameter shafts are arranged at two ends of the output shaft to form a left shaft shoulder and a right shaft shoulder; screw holes are formed in the end faces of the two sides of the shaft along the circumference;
the left adjusting end cover and the right adjusting end cover are provided with threaded holes along the circumference;
the left axial force bearing end cover and the right axial force bearing end cover are in flange shapes, the inner side of one side end surface is provided with bolt holes along the circumference, and the other side end surface is provided with an annular groove;
a left axial bearing end cover, a first V-shaped sealing ring, a first axial thrust bearing, a left adjusting end cover, a left floating arc-shaped sealing end cover, a right adjusting end cover, a second axial thrust bearing, a second V-shaped sealing ring and a right axial bearing end cover are sequentially arranged in the cylinder body from left to right; the arc curved surface side of the left floating arc-shaped sealing end cover is clung to the left inner hole shaft shoulder of the cylinder body of the oil cylinder; the left end face of the left adjusting end cover is tightly attached to the right end face of a first hole check ring arranged on the left side of the cylinder body of the oil cylinder; the screw holes on the circumference of the left adjusting end cover are provided with first set screws, and the right side end surfaces of the first set screws are clung to the left side end surfaces of the left floating arc-shaped sealing end covers; the arc curved surface side of the right floating arc-shaped sealing end cover is clung to the right inner hole shaft shoulder of the cylinder body of the oil cylinder; the right end face of the right adjusting end cover is tightly attached to the left end face of a second hole check ring arranged on the right side of the cylinder body of the oil cylinder; the screw holes on the circumference of the right adjusting end cover are provided with second set screws, and the left end faces of the second set screws are clung to the right end faces of the right floating arc-shaped sealing end covers; two O-shaped rings arranged on the cylinder body of the oil cylinder are tightly attached to the outer circles of the left floating arc-shaped sealing end cover and the right floating arc-shaped sealing end cover and are used for providing sealing of the curved surfaces of the left and right large inner holes of the cylinder body of the oil cylinder and the shaft shoulders of the curved surfaces of the outer circles of the left and right floating arc-shaped sealing end covers;
the rotary arc blade assembly is fixed on the axial direction of the output shaft; the fixed arc blade component is fastened at the bottom of the cylinder body of the oil cylinder;
the small-diameter shafts at the two ends of the output shaft are respectively matched with bearings arranged on the left floating arc-shaped sealing end cover and the right floating arc-shaped sealing end cover; the left shaft shoulder and the right shaft shoulder on the output shaft are respectively clung to O-shaped rings arranged on the left floating arc-shaped sealing end covers and the right floating arc-shaped sealing end covers and are used for providing sealing between the left shaft shoulder and the right shaft shoulder on the output shaft and the shaft shoulder on the end face of the left floating arc-shaped sealing end cover and the right floating arc-shaped sealing end cover respectively;
the inner circumferential curved surface of the pin hole of the cylinder body of the oil cylinder, the circumferential curved surface of the large-diameter shaft of the output shaft, the semicircular curved surface of the left floating arc-shaped sealing end cover and the semicircular curved surface of the right floating arc-shaped sealing end cover form a closed annular inner cavity.
Preferably, the rotary arc blade assembly mainly comprises a rotary arc blade, third O-shaped rings, blade end covers, second hexagon head bolts and second flat pads, wherein 1 third O-shaped ring is sleeved on two sides of the rotary arc blade, 2 third O-shaped rings are respectively and tightly fixed by 2 blade end covers, and the second hexagon head bolts and the second flat pads respectively fix the two blade end covers on two sides of the rotary arc blade; and a group of bolt counter bores are formed in the top of the rotary arc blade.
Preferably, the rotary arc blade assembly is fixed to the axial direction of the output shaft through a set of second socket head bolts passing through circular holes in the tops of the rotary arc blades.
Preferably, the fixed circular arc blade assembly mainly comprises a fixed circular arc blade, third O-shaped rings, blade end covers, second hexagon head bolts and second flat pads, wherein 1 third O-shaped ring is sleeved on two sides of the fixed circular arc blade respectively, 2 third O-shaped rings are tightly fixed by 2 blade end covers respectively, and the second hexagon head bolts and the second flat pads fix the two blade end covers to two sides of the fixed circular arc blade respectively; the top of fixed circular arc blade is equipped with a set of screw hole.
Preferably, the fixed arc blade assembly is fastened to the top screw hole of the fixed arc blade through a group of first hexagon head bolts penetrating through holes in the bottom of the cylinder body of the oil cylinder, and a first flat pad is arranged between the first hexagon head bolts and the cylinder body of the oil cylinder.
Preferably, the shapes of the fixed circular arc blades and the rotary circular arc blades are sections of an annular inner cavity, and the fixed circular arc blades and the rotary circular arc blades are matched with the annular inner cavity; the annular inner cavity is divided into two cavities by the fixed arc blade component and the rotary arc blade component.
Preferably, one sides of the 2 axial thrust bearings are respectively clung to the non-semicircular end faces of the left floating arc-shaped sealing end cover and the right floating arc-shaped sealing end cover; the other sides of the 2 axial thrust bearings are respectively clung to the inner annular grooves of the left axial bearing end cover and the right axial bearing end cover.
Preferably, the left axial bearing end cover and the right axial bearing end cover are respectively fixed to threaded holes on the left side end surface and the right side end surface of the output shaft through a group of first inner hexagon head bolts passing through the circumferential bolt holes.
Preferably, the 2V-shaped sealing rings are respectively fixed on the circumferences of the left axial bearing end cover and the right axial bearing end cover, and the outer lips of the 2V-shaped sealing rings are respectively clung to the curved surface of the big round hole of the cylinder body of the oil cylinder.
Preferably, two oil holes and hydraulic joints are arranged at two sides of the bottom of the cylinder body of the oil cylinder, which are positioned on the fixed arc blade assembly, and the oil cylinder body of the oil cylinder can be externally connected with a hydraulic pressure oil port and an oil return port and used for driving the swing oil cylinder to rotate.
Compared with the prior art, the invention has the beneficial effects that:
(1) The working pressure of the swing oil cylinder is more than 21MPa, and the output torque capacity under the same external dimension is greatly improved.
(2) The leakage in the swing cylinder is almost equal to zero.
(3) Through setting up the hydraulic lock, can realize the rotation locking function of output shaft.
(4) The swinging angle can reach more than 300 degrees.
(5) The output torque can be multiplied by adding fixed circular arc blades and rotating circular arc blades in pairs.
(6) The volumetric efficiency is high.
(7) Compact structure and high transmission efficiency.
Drawings
Fig. 1 is a schematic diagram of the general assembly structure of a high-pressure large-swing-angle arc vane type swing cylinder structure.
Fig. 2 is a left side view of a high-pressure large-swing-angle arc vane type swing cylinder structure provided by the invention.
FIG. 3 is a sectional view of A-A of a high-pressure large-swing-angle arc vane type swing cylinder structure.
Fig. 4 is a schematic perspective view of a high-pressure large-swing-angle arc vane type swing cylinder structure provided by the invention.
Fig. 5 is a schematic diagram of the general assembly structure of the rotary arc blade in the high-pressure large-swing-angle arc blade type swing cylinder structure.
Fig. 6 is an exploded view of a rotary arc vane in a high-pressure large-swing-angle arc vane type swing cylinder structure provided by the invention.
Fig. 7 is a schematic diagram of a final assembly structure of a fixed arc blade in a high-pressure large-swing-angle arc blade type swing cylinder structure.
Fig. 8 is an exploded view of a fixed arc vane in the high-pressure large-swing-angle arc vane type swing cylinder structure provided by the invention.
Reference numerals illustrate: 1. oil hole and hydraulic joint; 2. a first O-ring; 3. a first hole retainer ring; 4. a left adjustment end cap; 5. a first V-shaped seal ring; 6. a first set screw; 7. a first axial thrust bearing; 8. a first sliding bearing; 9. an output shaft; 10. a first socket head cap bolt; 11. a second O-ring; 12. a left axial force-bearing end cover; 13. a left floating arc-shaped sealing end cover; 14. an oil cylinder body; 15. a right axial force bearing end cover; 16. a right floating arc-shaped sealing end cover; 17. fixing the arc blade; 18. a first flat pad; 19. a first hex head bolt; 20. a third O-ring; 21. a blade end cap; 22. a second flat pad; 23. a second hex head bolt; 24. a second socket head cap bolt; 25. rotating the arc blade; 26. a right adjustment end cap; 27 a second axial thrust bearing; 28. a second sliding bearing; 29. a second V-shaped sealing ring; 30. a second hole retainer ring; 31. and a second set screw.
Detailed Description
The present invention will be described in detail below with reference to the drawings and the specific embodiments thereof, which are for explanation of the present invention only, but not for limitation of the present invention.
1-4, the invention discloses a high-pressure large-swing-angle arc vane type swing oil cylinder structure, which comprises an oil cylinder body 14, an output shaft 9, a fixed arc vane component, a rotary arc vane component, a left floating arc sealing end cover 13, a left adjusting end cover 4 thereof, a right floating arc sealing end cover 16, a right adjusting end cover 26 thereof, a left axial bearing end cover 12, a right axial bearing end cover 15, a sealing element and a fastening accessory;
the cylinder body 14 is of a bilateral symmetry structure, a small hole is formed in the middle of the cylinder body, and two large holes are formed in the two ends of the cylinder body respectively to form a left inner hole shaft shoulder and a right inner hole shaft shoulder; the two end macropores close to the end of the cylinder body of the oil cylinder are respectively provided with a check ring groove for holes, and a first check ring 3 for holes and a second check ring 30 for holes are arranged in the grooves; o-shaped ring grooves are respectively arranged at the large holes at the two ends and close to the small holes, and a first O-shaped ring 2 and a second O-shaped ring 11 are arranged in the grooves;
the left floating arc-shaped sealing end cover 13 and the right floating arc-shaped sealing end cover 16 are axially provided with annular semicircular arc curved surfaces; an O-shaped ring groove is formed in the end face close to the annular semicircular arc curved surface, and a second O-shaped ring 11 is arranged in the groove; the inner holes of the left floating arc-shaped sealing end cover 13 and the right floating arc-shaped sealing end cover 16 are respectively provided with a first sliding bearing 8 and a second sliding bearing 28;
the output shaft 9 is of a bilateral symmetry structure, a large-diameter shaft is arranged in the middle of the output shaft 9, and small-diameter shafts are arranged at two ends of the output shaft to form a left shaft shoulder and a right shaft shoulder; screw holes are formed in the end faces of the two sides of the shaft along the circumference;
the left adjusting end cover 4 and the right adjusting end cover 26 are provided with threaded holes along the circumference;
the left axial force bearing end cover 12 and the right axial force bearing end cover 15 are in flange shapes, the inner side of one side end surface is provided with bolt holes along the circumference, and the other side end surface is provided with an annular groove;
a left axial bearing end cover 12, a first V-shaped sealing ring 5, a first axial thrust bearing 7, a left adjusting end cover 4, a left floating arc-shaped sealing end cover 13, a right floating arc-shaped sealing end cover 16, a right adjusting end cover 26, a second axial thrust bearing 27, a second V-shaped sealing ring 29 and a right axial bearing end cover 15 are sequentially arranged in the cylinder body 14 from left to right; the arc curved surface side of the left floating arc-shaped sealing end cover 13 is tightly attached to the left inner hole shaft shoulder of the oil cylinder body 14; the left end face of the left adjusting end cover 4 is tightly attached to the right end face of a first hole check ring 3 arranged on the left side of the oil cylinder body 14; the screw holes on the circumference of the left adjusting end cover 4 are provided with first set screws 6, and the right side end surfaces of the first set screws 6 are clung to the left side end surfaces of the left floating arc-shaped sealing end covers 13; the arc curved surface side of the right floating arc-shaped sealing end cover 16 is tightly attached to the right inner hole shaft shoulder of the oil cylinder body 14; the right end face of the right adjusting end cover 26 is tightly attached to the left end face of a second hole retainer ring 30 arranged on the right side of the oil cylinder body 14; the screw holes on the circumference of the right adjusting end cover 26 are provided with second set screws 31, and the left end face of each second set screw 31 is clung to the right end face of the right floating arc-shaped sealing end cover 16; the two O-shaped rings 2 and 11 arranged on the cylinder body 14 are tightly attached to the outer circles of the left floating arc-shaped sealing end cover 13 and the right floating arc-shaped sealing end cover 16 and are used for providing sealing of the curved surfaces of the left and right large inner holes of the cylinder body and the curved surface shoulders of the outer circles of the left and right floating arc-shaped sealing end covers;
the rotary arc blade assembly is fixed on the axial direction of the output shaft 9; the fixed arc blade assembly is fastened at the bottom of the oil cylinder body 14;
the small diameter shafts at the two ends of the output shaft 9 are respectively matched with bearings arranged on the left floating arc-shaped sealing end cover 13 and the right floating arc-shaped sealing end cover 16; the left and right shoulders on the output shaft 9 are respectively clung to O-shaped rings arranged on the left and right floating arc-shaped sealing end covers and are used for providing sealing between the left and right shoulders on the output shaft and the end face shoulders of the left and right floating arc-shaped sealing end covers;
the inner circumferential curved surface of the pin hole of the cylinder body 14, the circumferential curved surface of the large-diameter shaft of the output shaft 9, the semicircular curved surface of the left floating arc-shaped sealing end cover 13 and the semicircular curved surface of the right floating arc-shaped sealing end cover 16 form a closed annular inner cavity.
Specifically, as shown in fig. 5 and 6, the rotary arc blade assembly mainly comprises a rotary arc blade 25, third O-rings 20, blade end covers 21, second hexagon head bolts 23 and second flat pads 22, wherein 1 third O-ring 20 is sleeved on two sides of the rotary arc blade 25, 2 third O-rings 20 are respectively and tightly fixed by 2 blade end covers 21, and the second hexagon head bolts 23 and the second flat pads 22 respectively fix two blade end covers 21 on two sides of the rotary arc blade 25; the top of the rotary arc blade 25 is provided with a set of bolt counter bores.
Specifically, the rotary circular arc blade assembly is fixed to the axial direction of the output shaft 9 through a circular hole at the top of the rotary circular arc blade by a set of second hexagon socket head bolts 24.
Specifically, as shown in fig. 7 and 8, the fixed circular arc blade assembly mainly comprises a fixed circular arc blade 17, third O-rings 20, a blade end cover 21, second hexagon head bolts 23 and a second flat pad 22, wherein 1 third O-ring 20 is respectively sleeved on two sides of the fixed circular arc blade 17, 2 third O-rings 20 are respectively and tightly fixed by 2 blade end covers 21, and the second hexagon head bolts 23 and the second flat pad 22 respectively fix two blade end covers 21 on two sides of the fixed circular arc blade 17; the top of the fixed circular arc blade 25 is provided with a set of screw holes.
Specifically, the fixed circular arc vane assembly is fastened to the top screw hole of the fixed circular arc vane 17 through a set of first hexagonal head bolts 19 passing through holes in the bottom of the cylinder block 14, and a first flat pad 18 is provided between the first hexagonal head bolts 19 and the cylinder block 14.
Specifically, the outer shapes of the fixed circular arc blades 17 and the rotary circular arc blades 25 are all a section of an annular inner cavity, and the fixed circular arc blades and the rotary circular arc blades are mutually matched with the annular inner cavity; the annular inner cavity is divided into two cavities by the fixed arc blade component and the rotary arc blade component.
Specifically, one sides of the 2 axial thrust bearings 7 and 27 are respectively clung to the non-semicircular arc end surfaces of the left floating arc seal end cover 13 and the right floating arc seal end cover 16; the other sides of the 2 axial thrust bearings 7 and 27 are respectively clung to the inner annular grooves of the left axial force-bearing end cover 12 and the right axial force-bearing end cover 15.
Specifically, the left axial force-bearing end cover 12 and the right axial force-bearing end cover 15 are respectively fixed to threaded holes on the left and right side end surfaces of the output shaft 9 through a set of first socket head bolts 10 passing through the circumferential bolt holes thereof.
Specifically, the 2V-shaped sealing rings 5 and 29 are respectively fixed on the circumferences of the left axial bearing end cover 12 and the right axial bearing end cover 15, and the outer lips of the 2V-shaped sealing rings 5 and 29 are respectively clung to the large round hole curved surface of the cylinder body 14.
Specifically, two oil holes and hydraulic joints 1 are arranged at two sides of the fixed arc blade assembly at the inner bottom of the cylinder body 14 of the oil cylinder, and can be externally connected with a hydraulic pressure oil port and an oil return port for driving the swing oil cylinder to rotate.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the invention, but any modifications, equivalents, and improvements made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (7)
1. The utility model provides a high pressure big swing angle circular arc vane type swing hydro-cylinder structure, includes hydro-cylinder body (14), output shaft (9), fixed circular arc vane subassembly, rotatory circular arc vane subassembly, left side floating arc seal end cover (13) and left regulation end cover (4), right side floating arc seal end cover (16) and right side regulation end cover (26), left axial bearing end cover (12), right axial bearing end cover (15), sealing member and fastening accessory, its characterized in that:
the cylinder body (14) is of a bilateral symmetry structure, a small hole is arranged in the middle, and two large holes are respectively arranged at two ends of the cylinder body to form a left inner hole shaft shoulder and a right inner hole shaft shoulder; the two end macropores close to the end of the cylinder body of the oil cylinder are respectively provided with a hole check ring groove, and a first hole check ring (3) and a second hole check ring (30) are arranged in the grooves; o-shaped ring grooves are respectively arranged at the large holes at the two ends and close to the small holes, and a first O-shaped ring (2) and a second O-shaped ring (11) are arranged in the grooves;
an annular semicircular arc curved surface is axially arranged on the left floating arc-shaped sealing end cover (13) and the right floating arc-shaped sealing end cover (16); an O-shaped ring groove is formed in the end face close to the annular semicircular arc curved surface, and a second O-shaped ring (11) is arranged in the groove; the inner holes of the left floating arc-shaped sealing end cover (13) and the right floating arc-shaped sealing end cover (16) are respectively provided with a first sliding bearing (8) and a second sliding bearing (28);
the output shaft (9) is of a bilateral symmetry structure, a large-diameter shaft is arranged in the middle of the output shaft (9), and small-diameter shafts are arranged at two ends of the output shaft to form a left shaft shoulder and a right shaft shoulder; screw holes are formed in the end faces of the two sides of the shaft along the circumference;
screw holes are formed in the left adjusting end cover (4) and the right adjusting end cover (26) along the circumference;
the left axial force bearing end cover (12) and the right axial force bearing end cover (15) are in flange shapes, the inner side of one side end surface is provided with bolt holes along the circumference, and the other side end surface is provided with an annular groove;
a left axial bearing end cover (12), a first V-shaped sealing ring (5), a first axial thrust bearing (7), a left adjusting end cover (4), a left floating arc-shaped sealing end cover (13), a right floating arc-shaped sealing end cover (16), a right adjusting end cover (26), a second axial thrust bearing (27), a second V-shaped sealing ring (29) and a right axial bearing end cover (15) are sequentially arranged in the cylinder body (14) from left to right; the arc curved surface side of the left floating arc-shaped sealing end cover (13) is tightly attached to the left inner hole shaft shoulder of the cylinder body (14); the left end face of the left adjusting end cover (4) is tightly attached to the right end face of a first hole check ring (3) arranged on the left side of the cylinder body (14); the screw holes on the circumference of the left adjusting end cover (4) are provided with first set screws (6), and the right side end surfaces of the first set screws (6) are clung to the left side end surfaces of the left floating arc-shaped sealing end covers (13); the arc curved surface side of the right floating arc-shaped sealing end cover (16) is tightly attached to the right inner hole shaft shoulder of the oil cylinder body (14); the right end face of the right adjusting end cover (26) is tightly attached to the left end face of a second hole check ring (30) arranged on the right side of the oil cylinder body (14); the threaded holes on the circumference of the right adjusting end cover (26) are provided with second set screws (31), and the left end face of each second set screw (31) is tightly attached to the right end face of the right floating arc-shaped sealing end cover (16); two O-shaped rings (2, 11) arranged on the cylinder body (14) of the oil cylinder are tightly attached to the outer circles of the left floating arc-shaped sealing end cover (13) and the right floating arc-shaped sealing end cover (16) and are used for providing sealing of the curved surfaces of the left and right large inner holes of the cylinder body and the curved surface shoulders of the outer circles of the left and right floating arc-shaped sealing end covers;
the rotary arc blade assembly is fixed on the axial direction of the output shaft (9); the fixed arc blade component is fastened at the bottom of the cylinder body (14);
the small-diameter shafts at the two ends of the output shaft (9) are respectively matched with bearings arranged on the left floating arc-shaped sealing end cover (13) and the right floating arc-shaped sealing end cover (16); the left and right shoulders on the output shaft (9) are respectively clung to O-shaped rings arranged on the left and right floating arc-shaped sealing end covers and are used for providing sealing between the left and right shoulders on the output shaft and the end face shoulders of the left and right floating arc-shaped sealing end covers;
the inner circumferential curved surface of the pin hole of the oil cylinder body (14), the circumferential curved surface of the large-diameter shaft of the output shaft (9), the semicircular curved surface of the left floating arc-shaped sealing end cover (13) and the semicircular curved surface of the right floating arc-shaped sealing end cover (16) form a closed annular inner cavity;
the rotary arc blade assembly mainly comprises a rotary arc blade (25), third O-shaped rings (20), blade end covers (21), second hexagonal head bolts (23) and second flat gaskets (22), wherein 1 third O-shaped ring (20) is sleeved on two sides of the rotary arc blade (25), 2 third O-shaped rings (20) are respectively and tightly fixed by 2 blade end covers (21), and the second hexagonal head bolts (23) and the second flat gaskets (22) respectively fix the two blade end covers (21) on two sides of the rotary arc blade (25); the top of the rotary arc blade (25) is provided with a group of bolt counter bores;
the rotary arc blade assembly is fixed to the axial direction of the output shaft (9) through a group of second hexagon socket head bolts (24) penetrating through round holes in the tops of the rotary arc blades;
the fixed arc blade assembly mainly comprises fixed arc blades (17), third O-shaped rings (20), blade end covers (21), second hexagon head bolts (23) and second flat gaskets (22), wherein 1 third O-shaped ring (20) is sleeved on two sides of each fixed arc blade (17), 2 third O-shaped rings (20) are respectively and tightly fixed by 2 blade end covers (21), and the two blade end covers (21) are respectively fixed to two sides of each fixed arc blade (17) by the second hexagon head bolts (23) and the second flat gaskets (22); the top of the fixed arc blade (17) is provided with a group of screw holes.
2. The high-pressure large-swing-angle arc vane type swing cylinder structure according to claim 1, wherein: the fixed circular arc blade assembly is fastened to a top screw hole of the fixed circular arc blade (17) through a group of first hexagon head bolts (19) penetrating through holes in the bottom of the oil cylinder body (14), and a first flat pad (18) is arranged between the first hexagon head bolts (19) and the oil cylinder body (14).
3. The high-pressure large-swing-angle arc vane type swing cylinder structure according to claim 1, wherein: the outer shapes of the fixed arc blades (17) and the rotary arc blades (25) are sections of annular inner cavities, and the fixed arc blades and the rotary arc blades are matched with the annular inner cavities; the annular inner cavity is divided into two cavities by the fixed arc blade component and the rotary arc blade component.
4. The high-pressure large-swing-angle arc vane type swing cylinder structure according to claim 1, wherein: one side of the 2 axial thrust bearings (7, 27) is respectively clung to the non-semicircular end faces of the left floating arc-shaped sealing end cover (13) and the right floating arc-shaped sealing end cover (16); the other sides of the 2 axial thrust bearings (7, 27) are respectively clung to the inner annular grooves of the left axial bearing end cover (12) and the right axial bearing end cover (15).
5. The high-pressure large-swing-angle arc vane type swing cylinder structure according to claim 1, wherein: the left axial bearing end cover (12) and the right axial bearing end cover (15) are respectively fixed to threaded holes on the left side end surface and the right side end surface of the output shaft (9) through a group of first inner hexagon head bolts (10) penetrating through the circumferential bolt holes.
6. The high-pressure large-swing-angle arc vane type swing cylinder structure according to claim 1, wherein: the 2V-shaped sealing rings (5, 29) are respectively fixed on the circumferences of the left axial bearing end cover (12) and the right axial bearing end cover (15), and the outer lips of the 2V-shaped sealing rings (5, 29) are respectively clung to the curved surface of the big round hole of the cylinder body (14).
7. The high-pressure large-swing-angle arc vane type swing cylinder structure according to any one of claims 1 to 6, characterized in that: two oil holes and hydraulic joints (1) are arranged at two sides of the fixed circular arc blade assembly at the inner bottom of the cylinder body (14) of the oil cylinder, and can be externally connected with a hydraulic pressure oil port and an oil return port for driving the swing oil cylinder to rotate.
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| CN113696173B (en) * | 2021-09-15 | 2022-10-11 | 哈尔滨工业大学 | Direct-acting type swinging hydraulic actuator for articulated robot |
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