CN116538166B - Large-load swing oil cylinder with single-side output torque and manufacturing method thereof - Google Patents
Large-load swing oil cylinder with single-side output torque and manufacturing method thereof Download PDFInfo
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- CN116538166B CN116538166B CN202310745834.4A CN202310745834A CN116538166B CN 116538166 B CN116538166 B CN 116538166B CN 202310745834 A CN202310745834 A CN 202310745834A CN 116538166 B CN116538166 B CN 116538166B
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
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- 238000003754 machining Methods 0.000 claims description 15
- 238000003466 welding Methods 0.000 claims description 13
- 239000000428 dust Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 10
- 238000005096 rolling process Methods 0.000 claims description 9
- 238000003780 insertion Methods 0.000 claims description 6
- 230000037431 insertion Effects 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000012545 processing Methods 0.000 description 20
- 230000009471 action Effects 0.000 description 9
- 238000009434 installation Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 7
- 238000007789 sealing Methods 0.000 description 6
- 239000004519 grease Substances 0.000 description 4
- 230000001050 lubricating effect Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
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Classifications
-
- 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
- F15B15/02—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member
- F15B15/06—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member for mechanically converting rectilinear movement into non- rectilinear movement
- F15B15/068—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member for mechanically converting rectilinear movement into non- rectilinear movement the motor being of the helical type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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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
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H2025/2062—Arrangements for driving the actuator
- F16H2025/2075—Coaxial drive motors
- F16H2025/2078—Coaxial drive motors the rotor being integrated with the nut or screw body
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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
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H25/24—Elements essential to such mechanisms, e.g. screws, nuts
- F16H2025/2481—Special features for facilitating the manufacturing of spindles, nuts, or sleeves of screw devices
Abstract
The application relates to the technical field of oil cylinders and discloses a single-side torque output heavy-load swing oil cylinder and a manufacturing method thereof, wherein the oil cylinder comprises a cylinder barrel, a hollow screw rod and an output screw rod, a fixing nut is arranged in the cylinder barrel, the fixing nut and the inner wall of the cylinder barrel are integrally formed, a first outer screw tooth is arranged on the output screw rod, a first inner screw tooth is arranged on the fixing nut, second inner screw teeth and second outer screw teeth are respectively arranged on the inner side and the outer side of the hollow screw rod, the second inner screw teeth are meshed with the first outer screw teeth, and the second outer screw teeth are meshed with the first inner screw teeth; and a roller bearing assembly is further arranged between the output screw and the inner wall of the cylinder barrel, and the roller bearing assembly is arranged at one end far away from the fixing nut so as to drive the output screw to rotate. According to the application, through the mutual combination between the roller bearing assembly and each part in the cylinder barrel, the swing oil cylinder can output larger torque and bear larger load and lower friction force.
Description
Technical Field
The application relates to the field of oil cylinders, in particular to a heavy-load swing oil cylinder with single-side output torque. In addition, the application also relates to a manufacturing method of the heavy-load swing oil cylinder with single-side output torque.
Background
The swinging oil cylinder is used as an executing element, and the swinging oil cylinder is operated by adopting a spiral spline structure with two opposite spiral pairs, and is an executing mechanism with the advantage of high torque output, and the body of the executing mechanism is of a cylindrical structure. A fixed nut with a spiral tooth pair is welded on the inner wall of the cylinder barrel; an output screw rod extending coaxially is arranged in the cylinder barrel, and a spiral spline is designed on the outer circle of the output screw rod; the hollow screw rod is a swing cylinder piston and is in an annular sleeve shape, and the inner hole and the outer circle are provided with spiral splines which can be meshed with the spiral splines of the output screw rod and the fixed nut. When the rotary type hydraulic cylinder is used, the cylinder barrel is usually fixed with the frame, the end face of the output screw is fixed with the rotary part, the hollow screw is pushed to move in the cylinder barrel under the action of oil pressure, and the output screw is driven to rotate through the helical teeth, so that the rotary action is realized.
The application aims at a heavy-load swinging oil cylinder, which is different from a small-sized swinging oil cylinder, and has the following defects that the bending moment is at least over 12000Nm, the radial force is at least over 10000kg, and the axial force is at least over 8000kg, but the existing heavy-load swinging oil cylinder has the following defects:
(1) The current heavy-load swing cylinder is shown in fig. 1, and the swing cylinder comprises: the end cover 1, the roller bearing 2, the joint 3, the cylinder body 4, the piston 5, the output screw rod 6, the sealing washer 7, the screw thread A, the external screw thread pair B, the internal screw thread pair C and the flow distribution hole D, wherein when the output screw rod in the end cover moves, the fixing nut is usually required to be arranged between the output screw rod and the cylinder body to be matched and installed and fixed, and the length of the spiral teeth required to be processed in the cylinder body is overlong, so that the length of the spiral teeth required to be processed in the cylinder body is reduced by arranging the fixing nut for a single time, the processing difficulty is reduced, and the shake of a processing cutter caused by the overlong length of the spiral teeth required to be processed for a single time is avoided, so that the final processing precision is influenced.
However, when the fixing nut is installed in the existing heavy-load swing oil cylinder, the existing heavy-load swing oil cylinder is connected in a split welding mode when the existing heavy-load swing oil cylinder is installed and fixed, but the split welding mode is easy to generate welding deformation in the cylinder body due to the influence of welding heat effect, so that the coaxiality between the fixing nut and the inner wall of the cylinder body is insufficient, and further oil can be leaked when oil is conveyed into the cylinder body.
In addition, the fixed nut in the conventional heavy-load swing oil cylinder also needs to limit the moving stroke of the hollow screw in the cylinder barrel, so that the problem that the moving stroke of the hollow screw is overlong and exceeds the screw pair and the meshing range to cause dislocation can be avoided through the arrangement of the fixed nut.
(2) At present, the swing oil cylinder is mainly rotated at two sides to output torque, and only a foot rest or a flange can be welded on a cylinder barrel to be installed and fixed, so that the appearance installation size is greatly increased, and the installation space is not rich for the modern engineering machinery with high integration.
(3) At present, the inside of the large-bore and high-load swing cylinder is provided with a thrust washer or a gasket made of a nonmetallic material, the sliding friction of friction force is reduced by adding lubricating grease, and after long-term working, the lubricating grease added into the large-bore and high-load swing cylinder can leak, and after the lubricating grease leaks, the nonmetallic gasket can be dry, so that the friction resistance is greatly improved.
(4) The output screw rod adopted in the existing large-output torque and large-specification swing cylinder adopts an integral structure, but the rod diameter of the adopted output screw rod is larger, and the rod end and the rod body diameter of the output screw rod are basically consistent, so that the annular area of the oil pressure action between the output screw rod and the cylinder body is smaller, and the integral output screw rod with the same diameter can lead to the larger integral weight of the swing cylinder.
And the output screw rod of overall structure is when processing, and the required diameter of processing of output screw rod body and rod end is different, and when the body of rod of output screw rod is comparatively thin, the waste material that produces when the body of rod of processing output screw rod is more, and then leads to the improvement of required cost.
In view of this, a large load swing cylinder of one-sided output torque needs to be developed to solve the above-described problems.
Disclosure of Invention
Aiming at the technical problems, the application provides the large-load swing oil cylinder capable of outputting torque at one side, which can output larger torque, bear larger load and lower friction force.
In order to solve the technical problems, the first aspect of the application provides a large-load swing oil cylinder capable of outputting torque from one side, which comprises a cylinder barrel, a hollow screw rod and an output screw rod, wherein a fixed nut is arranged in the cylinder barrel, the fixed nut and the inner wall of the cylinder barrel are integrally formed, a first outer spiral tooth is arranged on the output screw rod, a first inner spiral tooth is arranged on the fixed nut, second inner spiral teeth and second outer spiral teeth are respectively arranged on the inner side and the outer side of the hollow screw rod, the second inner spiral teeth are meshed with the first outer spiral teeth, and the second outer spiral teeth are meshed with the first inner spiral teeth so as to drive the output screw rod to rotate; and a roller bearing assembly is further arranged between the output screw and the inner wall of the cylinder barrel, and the roller bearing assembly is arranged at one end far away from the fixing nut so as to prop against one end of the hollow screw to form axial limit when the hollow screw axially moves.
Preferably, the output screw comprises a rod body and a rod end, the rod body is detachably connected with the rod end, and the diameter of the rod body is smaller than that of the rod end. Through this preferred technical scheme, body of rod and rod end adopt split type structure can be convenient for process body of rod and rod end respectively, improve manufacturing efficiency.
Further preferably, one end of the rod end, which is close to the rod body, is recessed towards the inside of the rod end to form a mounting groove, mounting threads are arranged on the inner wall of the mounting groove, a joint matched with the mounting groove is arranged at the end of the rod body, the joint is in threaded connection with the mounting groove, and fastening screws are embedded in the threaded connection part of the joint and the mounting groove so as to limit the joint to rotate relative to the mounting groove. Through this preferred technical scheme, set up fastening screw in the junction of body of rod and rod end can further improve the connection compactness between body of rod and the rod end.
Preferably, the hollow screw is disposed between the output screw and the cylinder inner wall so as to be capable of forming an oil pressure acting chamber together with the cylinder inner wall and the rod body, respectively. Through above-mentioned preferred technical scheme, through reducing the body of rod diameter, and then can improve the area of action of oil pressure action chamber to can improve the moment of torsion of output.
Still preferably, the cylinder barrel is further provided with an oil supply valve, a plurality of oil supply pipelines connected with the oil supply valve are arranged in the cylinder body of the cylinder barrel, and the oil supply pipelines are respectively communicated with the roller bearing assembly and the oil pressure acting cavity so as to supply oil for the output screw and the roller bearing assembly. According to the preferable technical scheme, the friction force generated by the swing oil cylinder during rotation can be further reduced by simultaneously supplying oil to the roller bearing assembly and the oil pressure acting cavity.
Preferably, a protective cover is arranged outside the oil supply valve, and the protective cover is connected with the outer wall of the cylinder barrel. According to the preferred technical scheme, the oil supply valve of the swing oil cylinder can be prevented from being damaged in the operation process by the aid of the protective cover.
Still preferably, a step surface is provided between the rod end and the inner wall of the cylinder barrel, the roller bearing assembly is disposed on the step surface, and a lock nut is disposed at one end of the step surface, which is close to the fixing nut, and the lock nut is adapted to limit the axial movement of the roller bearing assembly along the output screw. Through this preferred technical scheme, through setting up roller bearing assembly on the step face to further fix it through lock nut, with the motion that can restrict roller bearing assembly, guaranteed the stability of structure.
Preferably, the step surface is provided with a mounting insertion hole, the mounting insertion hole is internally suitable for being embedded with a fixing pin, the fixing pin is internally suitable for being embedded with a mounting screw, and the mounting screw is suitable for being embedded into the fixing pin to lock the fixing pin and fix the locking nut to the step surface through the fixing pin. Through this preferred technical scheme, can fix lock nut through the mounting screw, further guarantee the stability of roller bearing assembly mounted position.
Still preferably, the roller bearing assembly comprises a flange shaft collar, a gasket and a needle roller, wherein bearing groups formed by the needle roller and the gasket are arranged on two sides of the flange shaft collar in pairs, and the bearing groups arranged on two sides of the flange shaft collar are respectively abutted to the lock nut and the step surface. Through this preferred technical scheme, can effectively restrict the motion and the mounted position of roller bearing subassembly through lock nut and the cooperation of step face.
Preferably, at least one group of bearing groups is respectively arranged on two sides of the flange shaft collar, each group of bearing groups comprises at least one gasket and a needle roller, and the needle rollers in the bearing groups close to two sides of the flange shaft collar are propped against the outer ring surface of the flange shaft collar. According to the preferred technical scheme, the flange shaft collar is directly abutted against the roller pins, so that the structure is simplified, and meanwhile, the stability of the structure operation is ensured.
Further preferably, a plurality of oil holes are formed in the flange shaft collar, the oil holes penetrate through the flange shaft collar, and the oil holes are arranged around the ring surface of the flange shaft collar. Through the preferable technical scheme, the roller bearing assembly can be soaked by oil liquid through the arrangement of the oil through holes, and then friction force generated in the operation process of the swing oil cylinder can be reduced.
Preferably, a cylinder cover plate is arranged at one end of the cylinder barrel, which is close to the fixing nut, and the cylinder cover plate and the cylinder barrel are welded together to form a whole.
Still preferably, the middle part of cylinder body apron has still seted up spacing mounting hole, the body of rod of output screw is suitable for to pass spacing mounting hole, just a plurality of location mounting holes have been seted up around the cylinder body, a plurality of location mounting holes are suitable for and are fixed with equipment rack installation via fixing bolt. Through above-mentioned preferred technical scheme, can restrict the holistic mounted position of body of rod and swing hydro-cylinder through the setting of cylinder body apron to guarantee the stability when swinging operation.
Preferably, a gland is further arranged on the cylinder barrel, the gland is arranged on one side of the roller bearing assembly, and the gland is fixed on the cylinder barrel through a fixing bolt so as to limit radial movement of the roller bearing assembly. By means of the preferable technical scheme, the arrangement of the gland can further limit the movement of the roller bearing assembly in the radial direction so as to ensure that the roller bearing assembly can stably operate at a set position in the swinging oil cylinder.
Further preferably, a sealing ring and a dust ring are arranged between the gland and the rod end, the sealing ring is arranged on one side close to the roller bearing assembly, and the dust ring is arranged on one side far away from the roller bearing assembly. Through this preferred technical scheme, the setting of dust ring and sealing washer can avoid external and inside fluid to reveal and outside particulate matter to get into in the cylinder and produce wearing and tearing, and then can improve swing hydro-cylinder's life.
Preferably, the length of the first inner helical tooth arranged on the fixed nut is at least 1/2 of the moving stroke of the hollow screw. According to the preferable technical scheme, the length of the first inner spiral tooth is limited, so that the processing precision is prevented from being reduced due to overlong processing cutters.
Further preferably, the inclination angles of the inner spiral teeth and the outer spiral teeth formed on the fixed nut, the hollow screw and the output screw are 60-65 degrees, and through the preferred technical scheme, the larger rotation angle and the larger torque can be output under the same stroke by improving the inclination angle of the processed spiral teeth.
The second aspect of the present application provides a method for manufacturing a heavy-load swing cylinder with single-side output torque, comprising the steps of:
s1, after a fixing nut and a cylinder barrel are integrally cast and molded, turning first inner spiral teeth on the fixing nut;
s2, turning a first outer spiral tooth on the output screw, simultaneously turning a second inner spiral tooth and a second outer spiral tooth on the inner side and the outer side of the hollow screw respectively, and assembling the hollow screw, the output screw and the cylinder barrel;
s3, installing and fixing the cylinder cover plate and the cylinder barrel in a welding mode at one end of the cylinder barrel, which is close to the fixing nut;
s4, fixedly mounting the device frame through a plurality of positioning mounting holes formed in the cylinder cover plate so as to limit torque output of one side of the swing cylinder.
Preferably, in S1, an inlet of a machining tool for turning the first internal helical tooth is near a side of the fixing nut.
Further preferably, in S3, a weld position at the time of welding the cylinder tube with the cylinder cover plate is movably adjusted according to a length of the first inner helical tooth.
According to the technical scheme, the large-load swing oil cylinder capable of outputting torque at one side is formed by integrally forming the fixing nut and the inner wall of the cylinder barrel, the inner spiral teeth are turned on the fixing nut, the outer spiral teeth are turned on the output screw, the inner spiral teeth and the outer spiral teeth which are matched with the fixing nut and the output screw are respectively arranged at the inner side and the outer side of the hollow screw, the swing oil cylinder can be formed after the three are assembled, and the coaxiality between the fixing nut and the inner wall of the cylinder barrel is ensured, deformation caused by welding two between the fixing nut and the cylinder barrel is avoided, and the tightness of the whole structure is ensured;
the roller bearing assembly is arranged in the cylinder barrel, so that not only can the larger bending moment load be borne, but also the sliding friction can be converted into rolling friction, so that the friction force of the swing oil cylinder in the running process is smaller, and the starting pressure is lower;
in addition, the output screw rod adopted in the swing oil cylinder is of a split type structure, the rod body and the rod end of the output screw rod can be processed respectively, meanwhile, the fastening screw is matched to ensure that the rod body and the rod end are tightly connected, and the rod body and the rod end can be limited to rotate relatively.
Additional features and advantages of the application will be set forth in the detailed description which follows.
Drawings
FIG. 1 is a schematic perspective view of a conventional heavy-duty swing cylinder;
FIG. 2 is a cross-sectional view of a first view of a single-sided output torque heavy-duty swing cylinder according to an embodiment of the present application;
FIG. 3 is a cross-sectional view of a second view of a single-sided output torque heavy load swing cylinder according to an embodiment of the present application;
FIG. 4 is an enlarged view of the single side output torque heavy load swing cylinder at A in accordance with an embodiment of the present application;
FIG. 5 is an enlarged view of the single side output torque heavy load swing cylinder at B in accordance with an embodiment of the present application;
FIG. 6 is a schematic perspective view of a roller bearing assembly of a single-sided torque-outputting heavy-duty swing cylinder according to an embodiment of the present application;
FIG. 7 is a cross-sectional view of a roller bearing assembly of a single-sided output torque heavy-duty swing cylinder in accordance with an embodiment of the present application.
Reference numerals illustrate:
1. a cylinder; 11. an oil supply valve; 12. an oil supply line; 12' an oil outlet pipeline; 13. an oil pressure acting chamber; 14. a protective cover;
2. an output screw; 21. a rod body; 22. a rod end; 221. a first outer helical tooth; 222. a step surface; 2221. installing the embedded hole; 2222. a fixing pin; 23. a fastening screw;
3. a hollow screw; 31. a second inner helical tooth; 32. a second outer helical tooth;
4. a roller bearing assembly; 41. a flange shaft collar; 411. oil holes; 42. needle roller; 43. a gasket; 44. a lock nut;
5. a fixing nut; 51. a first inner helical tooth;
6. a cylinder cover plate; 61. positioning the mounting hole; 62. limiting the mounting hole;
7. a seal ring;
8. a dust ring;
9. a gland; 91. and (5) fixing bolts.
Detailed Description
The following describes specific embodiments of the present application in detail with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the application, are not intended to limit the application.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "configured," and "connected" are to be construed broadly, and for example, the term "connected" may be a fixed connection, a removable connection, or an integral connection; either directly or indirectly via an intermediate medium, or in communication with each other or in interaction with each other. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
Referring to fig. 2, the heavy-load swing cylinder with single-side output torque according to the specific embodiment of the application comprises a cylinder barrel 1, an output screw 2 and a hollow screw 3 arranged between the output screw 2 and the cylinder barrel 1, wherein a fixing nut 5 is arranged on the inner wall of the cylinder barrel 1, and the fixing nut 5 and the inner wall of the cylinder barrel 1 are integrally cast into a whole, and the cylinder barrel 1 and the fixing nut 5 are integrally formed, so that the problem of deformation of an inner hole of the cylinder barrel 1 caused by the thermal effect when the cylinder barrel 1 and the fixing nut 5 are welded in the traditional process is avoided, the coaxiality between the cylinder barrel 1 and the fixing nut 5 is further improved, the problem of leakage of oil in the cylinder of the swing cylinder possibly caused by deformation is avoided, and meanwhile, the stability of the swing cylinder is improved when the swing cylinder is installed and operated with the output screw 2 and the hollow screw 3.
Specifically, the output screw 2 includes a rod body 21 and a rod end 22, and the rod body 21 and the rod end 22 are detachably connected, and the rod body 21 and the rod end 22 can be respectively manufactured by adopting a split structural design, so that the manufacturing efficiency can be improved.
When the rod 21 and the rod end 22 are mounted, the end of the rod end 22, which is close to the rod 21, is recessed toward the inside of the rod end 22 to form a mounting groove, and the mounting groove is preferably formed on the central axes of the rod 21 and the rod end 22, so that the rod 21 and the rod end 22 can coaxially rotate after the mounting is completed. The inner wall of mounting groove is equipped with the mounting thread, the tip of body of rod 21 is equipped with the joint that can with mounting groove looks adaptation, threaded connection between joint and the mounting groove, and after the joint is connected with the mounting groove, the threaded connection department embedding fastening screw 23 of joint and mounting groove, because adopt threaded connection's mode between body of rod 21 and the rod end 22, its spiral direction and the holistic direction of rotation of output screw 2 also probably unanimous, when the direction of rotation of output screw 2 and the direction of rotation of mounting thread unanimous, long-term rotation can lead to the body of rod 21 of output screw 2 and the connection between the rod end 22 to produce not hard up, consequently, can restrict body of rod 21 and rod end 22 through the setting of fastening screw 23 and take place relative rotation, further guaranteed the connection inseparable between body of rod 21 and the rod end 22, prevent that body of rod 21 and rod end 22 rotate the connection that probably produces for a long time.
More specifically, the rod body 21 of the output screw 2 has a diameter smaller than that of the rod end 22, and the hollow screw 3 is disposed between the output screw 2 and the inner wall of the cylinder 1, so that the hollow screw 3 can form the oil pressure acting chamber 13 together with the inner wall of the cylinder 1 and the rod body 21 of the output screw 2, and, due to the smaller diameter of the rod body 21, the oil pressure acting chamber 13 that can be formed between the hollow screw 3 and the rod body 21 of the output screw 2 is larger in area than the conventional integrally formed output screw 2, see fig. 1 to 2, the oil pressure acting chamber 13 of the present application has an area a1+a2, whereas the oil pressure acting chamber 13 of the conventional swing cylinder has an area a1'+a2', wherein a1 'has an area larger than a2' and a2 'has an area larger than a1+a2', as seen in the present application. Because the swing oil cylinder outputs torque, the influence factor of the torque is mainly determined by oil pressure and oil pressure acting area, namely, the torque is in direct proportion to the oil pressure and the oil pressure acting area, and the larger the oil pressure is, the larger the oil pressure acting area is, so that the torque which the swing oil cylinder can output is larger.
In addition, an angle sensor can be arranged on the end face of the rod body 21, which is far away from the rod end 22, and the rotation angle of the swing oil cylinder can be measured in real time when the swing oil cylinder rotates through the angle sensor.
According to the heavy-load swing oil cylinder with single-side output torque, a first inner spiral tooth 51 is arranged on a fixed nut 5, a first outer spiral tooth 221 is arranged on an output screw 2, a second outer spiral tooth 32 and a second inner spiral tooth 31 are respectively arranged on one side, matched with the output screw 2 and the fixed nut 5, of a hollow screw 3, the first outer spiral tooth 221 is meshed with the second inner spiral tooth 31, the first inner spiral tooth 51 is meshed with the second outer spiral tooth 32, the hollow screw 3 and the output screw 2 are coaxially arranged, the hollow screw 3 is pushed to move in the cylinder barrel 1 along the axial direction under the action of oil pressure, and the hollow screw 3 can drive the output screw 2 to rotate through the mutual meshing between the hollow screw 3 and the inner spiral tooth and the outer spiral tooth arranged on the output screw 2, so that the rotation action is realized.
Specifically, the length of the first inner helical tooth 51 formed on the fixing nut 5 is at least 1/2 of the travel of the hollow screw 3. Referring to fig. 2, the hollow screw 3 is attached to the cylinder bottom, and due to the length of the first inner screw tooth 51, the second inner screw tooth 31 and the second outer screw tooth 32 formed on the hollow screw 3 can be meshed with the rod end 22 of the output screw 2 and the first inner screw tooth 51 formed on the fixing nut 5 respectively, so that the hollow screw 3 is prevented from being disjointed with the first outer screw tooth 221 formed on the rod end 22 when moving to attach to the cylinder bottom. Similarly, when the hollow screw 3 moves to the rightmost end, the hollow screw 3 can still be meshed with the screw teeth formed on the rod end 22 and the fixing nut 5. Therefore, through the arrangement of the length of the spiral teeth on the fixed nut 5, the hollow screw 3 can be prevented from being disjointed with the first inner spiral teeth 51 and the second outer spiral teeth 32 formed on the fixed nut 5 and the output screw 2 when moving in the cylinder barrel 1, so that the stability of the connecting structure of the hollow screw 3 and the fixed nut 5 and the output screw 2 is ensured.
More specifically, the inclination angles of the helical teeth formed on the fixing nut 5, the hollow screw 3 and the output screw 2 are 60 ° to 65 °. The inclination angle of the spiral teeth arranged on the swing oil cylinder is generally 30-45 degrees at present, and the inclination angle of the spiral teeth is set to be 60-65 degrees, so that the swing oil cylinder can output larger rotation angles and further improve torque under the same movement stroke, and the whole design length of the oil cylinder can be reduced due to the fact that the inclination angle is increased.
In order to facilitate the rotation of the output screw 2 in the cylinder barrel 1, the large-load swing cylinder with single-side output torque in the embodiment of the application is further provided with a roller bearing assembly 4 in the cylinder barrel 1, wherein the roller bearing assembly 4 is different from a traditional thrust washer 43 or a nonmetallic washer added with lubricating grease, and the like, so that sliding friction is generated to assist the output screw 2 in realizing the rotation action, and the traditional nonmetallic washer or the thrust washer 43 is replaced by adopting the roller bearing assembly 4 in the application, so that the traditional sliding friction can be converted into rolling friction, thereby the friction force generated by the output screw 2 during rotation is smaller, the starting pressure is lower, and the load capacity is increased.
The roller bearing assembly 4 is provided with a step surface 222 between the rod end 22 and the inner wall of the cylinder barrel 1, the roller bearing assembly 4 is arranged on the step surface 222, one end, close to the fixed nut 5, of the roller bearing assembly 4 is further provided with a lock nut 44, the axial movement of the roller bearing assembly 4 along the output screw 2 can be limited through the lock nut 44, meanwhile, the roller bearing assembly 4 is further provided with a gland 9, and the gland 9 is arranged on the cylinder barrel 1 through the fixed bolt 91, so that the movement of the roller bearing assembly 4 in the radial direction can be limited. By providing the gland 9 and the lock nut 44, the roller bearing assembly 4 can be restrained at a set position in the cylinder tube 1 to prevent displacement of the roller bearing assembly 4 when the swing cylinder rotates.
Referring to fig. 4, the installation limit of the lock nut 44 is first achieved by providing an installation insertion hole 2221 in the stepped surface 222, then inserting a fixing pin 2222 into the installation insertion hole 2221, the fixing pin 2222 being adapted to penetrate the lock nut 44, and finally inserting a mounting screw into the fixing pin 2222 to lock the fixing pin 2222, so that the lock nut 44 can be fixed to the stepped surface 222 by the cooperation of the fixing pin 2222 and the mounting screw.
The gland 9 is mounted and fixed by at least one long screw passing through the gland 9 and the roller bearing assembly 4 at the same time and finally being embedded into the cylinder barrel 1, so that the mounting and fixing of the gland 9 are completed. In addition, be equipped with sealing washer 7 and dust ring 8 between gland 9 and the rod end 22 in gland 9 one side, sealing washer 7 sets up in being close to roller bearing assembly 4 one side, and it can shutoff flow in the fluid in the roller bearing assembly 4 flows along the clearance between gland 9 and the rod end 22, and dust ring 8 sets up in keeping away from roller bearing assembly 4 one side, can prevent outside water and dust granule etc. infiltration to in cylinder 1 through dust ring 8 to lead to each spare part in cylinder 1 constantly to produce wearing and tearing until equipment is whole to damage in the operation.
In order to facilitate oil supply into the oil pressure acting cavity 13 and the roller bearing assembly 4, the oil supply valve 11 is further arranged on the cylinder barrel 1, the plurality of oil supply pipelines 12 connected with the oil supply valve 11 are arranged in the cylinder barrel 1, and in order to facilitate the arrangement of the plurality of oil supply pipelines 12, the thickness of the cylinder body of the cylinder barrel 1 is required to be set to exceed the thickness of the cylinder body of a conventional swing cylinder. At least one of the plurality of oil supply lines 12 in the cylinder body extends to a mounting position for mounting the roller bearing assembly 4, and oil can be supplied to the plurality of oil supply lines 12 simultaneously through the oil supply valve 11. The oil supply pipeline 12 extending to the installation position of the roller bearing assembly 4 can enable the roller bearing assembly 4 to be soaked in oil, rolling friction generated by the roller bearing assembly 4 can be further improved, the oil flowing into the roller bearing assembly 4 can continuously flow into the oil pressure acting cavity 13 along a gap between the lock nut 44 and the cylinder body, and then the oil supply pipeline 12 directly conveying oil into the oil pressure acting cavity 13 can be supplemented, so that the oil in the oil pressure acting cavity 13 is sufficient, and the overall working stability of the swing oil cylinder is guaranteed.
In addition, an oil outlet pipeline 12' extends from the oil supply valve 11, the oil outlet pipeline 12' is communicated with a gap between the hollow screw 3 and the inner wall of the cylinder barrel, when the oil supply pipeline 12 supplies oil to the roller bearing assembly 4 and the oil pressure acting cavity 13, the hollow screw 3 is pushed to axially move leftwards under the oil pressure action, when the hollow screw 3 moves leftwards, oil in the oil pressure acting cavities A1 and A2 is extruded, and the oil in the oil outlet pipeline is forced to flow into the oil supply valve 11 along the oil outlet pipeline 12 '. Meanwhile, the oil outlet pipeline 12 'can also supply oil to the gap between the hollow screw 3 and the inner wall of the cylinder barrel 1 so as to force the hollow screw 3 to move rightwards, and the hollow screw 3 moves and drives the oil in the oil pressure acting cavities A1 and A2 to flow towards the oil outlet pipeline 12 and finally flow into the oil supply valve 11 along the oil supply pipeline 12, so that the hollow screw 3 is driven to move leftwards and rightwards in the cylinder barrel 1 and drive the output screw to rotate so as to output torque through the cooperation of the oil supply pipeline 12 and the oil outlet pipeline 12'.
Specifically, in order to protect the oil supply valve 11, a protection cover 14 is disposed outside the oil supply valve 11, and the protection cover 14 is fixedly mounted on the outer wall of the cylinder barrel 1, so as to prevent the oil supply valve 11 from being damaged by external factors during the rotation of the swing cylinder, thereby resulting in unsmooth oil supply of the swing cylinder by the oil supply valve 11.
According to the large-load swing oil cylinder with single-side output torque, the fixing nut 5 on one side of the oil cylinder close to the rod body 21 is integrally formed with the inner wall of the cylinder barrel 1, namely, one end, close to the bottom of the cylinder, of the cylinder barrel 1 is of a fixed structure and cannot generate axial displacement, so that the roller bearing assembly 4 only needs to be arranged on one side, close to the rod end 22, of the roller bearing assembly 4, the roller bearing assembly 4 comprises a flange shaft collar 41, a gasket 43 and a needle roller 42, and bearing groups formed by the needle roller 42 and the gasket 43 are arranged on two sides of the flange shaft collar 41 in pairs. Each bearing group comprises at least one needle roller 42 and a gasket 43, wherein each bearing group is internally provided with one needle roller 42 and one gasket 43, the gasket 43 is propped against the lock nut 44, two ends of the needle roller 42 are propped against the gasket 43 and the flange shaft collar 41 respectively, therefore, bearing groups formed by the needle roller 42 and the gasket 43 are arranged on two sides of the flange shaft collar 41, the bearing groups arranged on two sides of the flange shaft collar 41 are propped against the lock nut 44 and the step surface 222 respectively, and specifically, one side of the gasket 43 in the bearing group close to one side of the rod end 22 is propped against the step surface 222. Because the gasket 43 is substantially different from the flange collar 41, if the outer ring surfaces on both sides of the flange collar 41 need to be directly abutted against the needle rollers 42 to replace the gasket 43, various values (flatness, roughness and hardness) of the outer ring surfaces of the flange collar 41 need to be limited, the flatness of the outer ring surfaces on both sides of the flange collar 41 needs to be ensured to be less than 1 wire (0.01 mm), the roughness is less than Ra0.5, and the hardness needs to be at least HR60, so that normal and stable operation can be maintained when the needle rollers 42 are directly abutted against the outer ring surfaces on both sides of the flange collar 41.
Specifically, since the bearing groups formed by the needle rollers 42 and the gaskets 43 are disposed on both sides of the flange collar 41, in order to make the needle rollers 42 and the gaskets 43 on both sides of the flange collar 41 be soaked in oil, a ring of oil passing portion extends radially outwards from the outer ring surface of the flange collar 41, a plurality of oil passing holes 411 are formed in the oil passing portion, the oil passing holes 411 are disposed around the oil passing portion, and a plurality of oil passing holes 411 disposed around the oil passing portion are disposed at equal intervals and at equal angles. When the oil supply pipeline 12 inputs oil to the installation position of the roller bearing assembly 4, the oil firstly flows into the bearing group near one side of the rod body 21, so that the rolling needles 42 and the gaskets 43 in the bearing group are immersed in the oil, along with the continuous inflow of the oil in the oil supply pipeline 12, part of the oil flows into the bearing group near one side of the rod end 22 through a plurality of oil through holes 411 which are arranged around the oil through part, so that the rolling needles 42 and the gaskets 43 arranged at two sides of the flange bearing can be finally immersed in the oil completely, and meanwhile, the oil can lubricate the rolling needles 42 and the gaskets 43, thereby further reducing the friction force generated during rolling friction, and further facilitating the rotation of the swinging oil cylinder and the output of torque.
According to the large-load swing oil cylinder with single-side output torque, one end of the cylinder barrel 1, which is close to the fixing nut 5, is provided with the cylinder body cover plate 6, namely, the cylinder bottom is provided with the cylinder body cover plate 6, the cylinder body cover plate 6 and the cylinder barrel 1 are welded into a whole, namely, one side, which is close to the cylinder body cover plate 6, of the swing oil cylinder does not output torque, and only one side, which is close to the end 22 of the output oil cylinder, outputs torque.
It should be noted that, the weld seam required for welding between the cylinder cover plate 6 and the cylinder barrel 1 is determined according to the length of the first internal screw teeth 51 machined on the fixing nut 5, that is, when the welding is performed between the cylinder cover plate 6 and the cylinder barrel 1, the first internal screw teeth 51 are machined in the cylinder barrel 1, so if the length of the first internal screw teeth 51 required to be machined is too long, the length of the tool required for machining the first internal screw teeth needs to be correspondingly lengthened, and because the overall length of the machining tool is longer, the too long machining tool is easy to shake in the machining process of machining the first internal screw teeth 51, thereby affecting the machining precision of the machining tool on the first internal screw teeth 51, and being unfavorable for machining the first internal screw teeth 51. Therefore, in order to avoid the too long processing length of the cutter, the length of the axial extension of the cylinder cover plate 6 can be increased, that is, the position of the welding seam between the cylinder cover plate 6 and the cylinder barrel 1 can be adjusted according to the length of the first internal spiral tooth 51 to be processed, so that the length of the processing cutter extending into the cylinder barrel 1 for processing is reduced, and the problem that the too long processing cutter shakes in the processing process and causes insufficient processing precision is avoided.
Specifically, in order to facilitate the installation between the rod body 21 of the output screw 2 and the cylinder cover plate 6, a limit mounting hole 62 is further formed in the middle of the cylinder cover plate 6, the rod body 21 of the output screw 2 is suitable for penetrating through the limit mounting hole 62, a plurality of positioning mounting holes 61 are formed in the periphery of the cylinder, and the swing cylinder can be integrally fixed on the equipment rack through the plurality of positioning mounting holes 61 and the fixing bolts 91, so that torque output of a single side of the swing cylinder is achieved.
The application relates to a method for manufacturing a large-load swing cylinder with single-side output torque, which is used for manufacturing the large-load swing cylinder with single-side output torque, and comprises the following steps of:
s1, after a fixed nut 5 and a cylinder barrel 1 are integrally cast and molded, turning a first inner spiral tooth 51 on the fixed nut 5;
s2, turning a first outer spiral tooth 221 on the output screw rod 2, simultaneously turning a second inner spiral tooth 31 and a second outer spiral tooth 32 on the inner side and the outer side of the hollow screw rod 3 respectively, and assembling the hollow screw rod 3, the output screw rod 2 and the cylinder barrel 1;
s3, installing and fixing the cylinder cover plate 6 and the cylinder 1 at one end of the cylinder 1 close to the fixing nut 5 in a welding mode;
s4, fixedly mounting the device frame through a plurality of positioning mounting holes 61 formed in the cylinder cover plate 6 so as to limit torque output of one side of the swing cylinder.
Specifically, in S1, the inlet of the processing tool for turning the first inner helical tooth 51 is near one side of the fixing nut, and since the fixing nut is integrally formed with the cylinder barrel, and in order to reduce the length of the processing tool extending into the cylinder barrel, the processing length of the first inner helical tooth can be effectively reduced from one side near the fixing nut, that is, from the cylinder bottom extending into the cylinder barrel, so that the problem that the processing accuracy is affected due to the shaking possibly generated in the processing process due to the overlong extending length of the processing tool is avoided.
More specifically, in S3, the weld position of the cylinder 1 and the cylinder cover 6 during welding is movably adjusted according to the length of the first internal helical tooth 51, so that the weld position between the cylinder cover 6 and the cylinder 1 is changed by increasing the axial extension length of the cylinder cover 6, and meanwhile, the length of the machining tool extending into the cylinder 1 for machining is reduced by changing the weld position, so that the possible shake generated in the machining process due to overlong machining tool is avoided, and the precision of the first internal helical tooth 51 turned by the machining tool is ensured.
In the description of the present application, the descriptions of the terms "one embodiment," "some embodiments," "an implementation," and the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In the present application, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the present application have been described in detail above with reference to the accompanying drawings, but the present application is not limited thereto. Within the scope of the technical idea of the application, a plurality of simple variants of the technical proposal of the application can be carried out, comprising that each specific technical feature is combined in any suitable way, and in order to avoid unnecessary repetition, the application does not need to be additionally described for various possible combinations. Such simple variations and combinations are likewise to be regarded as being within the scope of the present disclosure.
Claims (15)
1. The utility model provides a big load swing hydro-cylinder of unilateral output moment of torsion, its characterized in that includes cylinder (1), hollow screw (3) and output screw (2), be equipped with fixation nut (5) in cylinder (1), fixation nut (5) with cylinder (1) inner wall integrated into one piece, just first outer helical tooth (221) have been seted up on output screw (2), first inner helical tooth (51) have been seted up on fixation nut (5), second inner helical tooth (31) and second outer helical tooth (32) have been seted up respectively to inside and outside both sides on hollow screw (3), second inner helical tooth (31) with first outer helical tooth (221) mesh, second outer helical tooth (32) with first inner helical tooth (51) mesh, in order to can drive output screw (2) rotate; a roller bearing assembly (4) is further arranged between the output screw (2) and the inner wall of the cylinder barrel (1), and the roller bearing assembly (4) is arranged at one end far away from the fixed nut (5) so as to be propped against one end of the hollow screw (3) when the hollow screw (3) moves axially to form axial limit;
the output screw (2) comprises a rod body (21) and a rod end (22), the diameter of the rod body (21) is smaller than that of the rod end (22), and the hollow screw (3) is arranged between the output screw (2) and the inner wall of the cylinder barrel (1) so as to form an oil pressure acting cavity (13) together with the inner wall of the cylinder barrel (1) and the rod body (21) respectively; a step surface (222) is arranged between the rod end (22) and the inner wall of the cylinder barrel (1), the roller bearing assembly (4) is arranged on the step surface (222), a locking nut (44) is arranged at one end, close to the fixed nut (5), of the step surface (222), and the locking nut (44) is suitable for limiting the axial movement of the roller bearing assembly (4) along the output screw (2);
the roller bearing assembly (4) comprises a flange shaft collar (41), rolling pins (42) and gaskets (43), wherein bearing groups formed by the rolling pins (42) and the gaskets (43) are arranged on two sides of the flange shaft collar (41) in pairs, and the bearing groups arranged on two sides of the flange shaft collar (41) are respectively abutted against the locking nuts (44) and the step surfaces (222);
a plurality of oil holes (411) are formed in the flange shaft collar (41), the oil holes (411) penetrate through the flange shaft collar (41), and the oil holes (411) are arranged around the ring surface of the flange shaft collar (41);
the cylinder barrel (1) is further provided with an oil supply valve (11), a plurality of oil supply pipelines (12) connected with the oil supply valve (11) are arranged in the cylinder body of the cylinder barrel (1), and the oil supply pipelines (12) are respectively communicated with the roller bearing assembly (4) and the oil pressure acting cavity (13) so as to supply oil for the output screw (2) and the roller bearing assembly (4).
2. The heavy-duty swing cylinder for single-sided output torque according to claim 1, wherein the rod body (21) is detachably connected to the rod end (22).
3. The large-load swing cylinder with single-side output torque according to claim 2, wherein one end of the rod end (22) close to the rod body (21) is recessed towards the inside of the rod end (22) to form a mounting groove, mounting threads are arranged on the inner wall of the mounting groove, a connector matched with the mounting groove is arranged at the end part of the rod body (21), the connector is in threaded connection with the mounting groove, and a fastening screw (23) is embedded in the threaded connection part of the connector and the mounting groove so as to limit the relative rotation of the connector and the mounting groove.
4. The heavy-load swing cylinder with single-side output torque according to claim 1, wherein a protective cover (14) is arranged outside the oil supply valve (11), and the protective cover (14) is connected with the outer wall of the cylinder barrel (1).
5. The heavy-duty swing cylinder for single-sided output torque according to claim 1, characterized in that a mounting insertion hole (2221) is formed in the stepped surface (222), a fixing pin (2222) is adapted to be inserted into the mounting insertion hole (2221), a mounting screw is adapted to be inserted into the fixing pin (2222) to lock the fixing pin (2222), and the lock nut (44) is fixed to the stepped surface (222) via the fixing pin (2222).
6. The heavy-load swing cylinder with single-side output torque according to claim 1, wherein at least one group of bearing groups is respectively arranged on two sides of the flange shaft collar (41), each group of bearing groups comprises at least one gasket (43) and a needle roller (42), and the needle roller (42) in the bearing groups close to two sides of the flange shaft collar (41) are propped against the outer ring surface of the flange shaft collar (41).
7. The heavy-load swing cylinder with single-side output torque according to claim 1, wherein a cylinder cover plate (6) is arranged at one end of the cylinder barrel (1) close to the fixing nut (5), and the cylinder cover plate (6) and the cylinder barrel (1) are welded together to form a whole.
8. The large-load swing cylinder with single-side output torque according to claim 7, wherein a limit mounting hole (62) is further formed in the middle of the cylinder cover plate (6), the rod body (21) of the output screw (2) is suitable for penetrating through the limit mounting hole (62), a plurality of positioning mounting holes (61) are formed in the periphery of the cylinder body, and the positioning mounting holes (61) are suitable for being mounted and fixed with the equipment rack through fixing bolts (91).
9. The heavy-load swing cylinder with single-side output torque according to claim 1, characterized in that a gland (9) is further provided on the cylinder tube (1), the gland (9) is provided on one side of the roller bearing assembly (4), and the gland (9) is fixed on the cylinder tube (1) via a fixing bolt (91) so as to be able to restrict radial movement of the roller bearing assembly (4).
10. The heavy-duty swing cylinder for single-sided output torque according to claim 9, characterized in that a seal ring (7) and a dust ring (8) are provided between the gland (9) and the rod end (22), the seal ring (7) being provided on a side close to the roller bearing assembly (4), and the dust ring (8) being provided on a side away from the roller bearing assembly (4).
11. The heavy load oscillating cylinder with single side output torque according to any one of claims 1 to 10, characterized in that the length of the first internal helical tooth (51) opened on the fixed nut (5) is at least 1/2 of the moving stroke of the hollow screw (3).
12. The heavy-duty swing cylinder of single-sided output torque according to any one of claims 1 to 10, characterized in that the inclination angle of the helical teeth opened on the fixing nut (5), hollow screw (3) and output screw (2) is 60 ° to 65 °.
13. A method for manufacturing the single-side output torque heavy-duty swing cylinder according to any one of claims 1 to 12, characterized by comprising the steps of:
s1, after a fixing nut (5) and a cylinder barrel (1) are integrally cast and molded, turning a first inner spiral tooth (51) on the fixing nut (5);
s2, turning a first outer spiral tooth (221) on the output screw (2), simultaneously turning a second inner spiral tooth (31) and a second outer spiral tooth (32) on the inner side and the outer side of the hollow screw (3), and assembling the hollow screw (3), the output screw (2) and the cylinder barrel (1) in a combined way;
s3, installing and fixing the cylinder cover plate (6) and the cylinder (1) at one end of the cylinder (1) close to the fixing nut (5) in a welding mode;
s4, fixedly mounting the device frame through a plurality of positioning mounting holes (61) formed in a cylinder cover plate (6) so as to limit torque output of one side of the swing cylinder.
14. The method of manufacturing a heavy load swing cylinder for single side output torque according to claim 13, wherein in S1, the inlet of the machining tool for turning the first internal screw teeth (51) is near the side of the fixing nut.
15. The method of manufacturing a heavy load swing cylinder with a single side output torque according to claim 13, wherein in S3, the weld position when the cylinder tube (1) is welded to the cylinder cover plate (6) is movably adjusted according to the length of the first inner helical tooth (51) to be turned.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310745834.4A CN116538166B (en) | 2023-06-25 | 2023-06-25 | Large-load swing oil cylinder with single-side output torque and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310745834.4A CN116538166B (en) | 2023-06-25 | 2023-06-25 | Large-load swing oil cylinder with single-side output torque and manufacturing method thereof |
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| CN116538166A CN116538166A (en) | 2023-08-04 |
| CN116538166B true CN116538166B (en) | 2023-10-24 |
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| CN215762523U (en) * | 2021-09-02 | 2022-02-08 | 上海盾克机械有限公司 | Support structure of output shaft of hydraulic swing motor |
| CN216951077U (en) * | 2022-03-11 | 2022-07-12 | 上海盾克机械有限公司 | Swing motor rear cover locking structure |
| CN218934892U (en) * | 2022-11-23 | 2023-04-28 | 上海盾克机械有限公司 | Improved tooth sleeve structure for spiral swing oil cylinder |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205559408U (en) * | 2016-04-28 | 2016-09-07 | 湖北金力液压件有限公司 | Can feedback swing spiral rotary actuator of angle in real time |
| CN205559409U (en) * | 2016-04-28 | 2016-09-07 | 湖北金力液压件有限公司 | Spirally swinging hydraulic cylinder |
| CN215762523U (en) * | 2021-09-02 | 2022-02-08 | 上海盾克机械有限公司 | Support structure of output shaft of hydraulic swing motor |
| CN113819108A (en) * | 2021-09-29 | 2021-12-21 | 辽宁工程技术大学 | Digital spiral swing fluid cylinder |
| CN216951077U (en) * | 2022-03-11 | 2022-07-12 | 上海盾克机械有限公司 | Swing motor rear cover locking structure |
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| CN116538166A (en) | 2023-08-04 |
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