CN111022622A - Vibration-damping noise-reducing gearbox and lubricating oil self-circulation system thereof - Google Patents
Vibration-damping noise-reducing gearbox and lubricating oil self-circulation system thereof Download PDFInfo
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- CN111022622A CN111022622A CN201911338433.7A CN201911338433A CN111022622A CN 111022622 A CN111022622 A CN 111022622A CN 201911338433 A CN201911338433 A CN 201911338433A CN 111022622 A CN111022622 A CN 111022622A
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- 239000010687 lubricating oil Substances 0.000 title claims abstract description 51
- 238000013016 damping Methods 0.000 title claims abstract description 14
- 239000003921 oil Substances 0.000 claims abstract description 117
- 230000005540 biological transmission Effects 0.000 claims abstract description 57
- 230000007246 mechanism Effects 0.000 claims abstract description 51
- 230000007704 transition Effects 0.000 claims description 61
- 230000009467 reduction Effects 0.000 claims description 12
- 238000000034 method Methods 0.000 abstract description 20
- 230000000694 effects Effects 0.000 abstract description 7
- 230000008859 change Effects 0.000 abstract description 6
- 230000001737 promoting effect Effects 0.000 abstract description 2
- 230000002829 reductive effect Effects 0.000 description 20
- 230000008569 process Effects 0.000 description 18
- 230000001050 lubricating effect Effects 0.000 description 13
- 238000001228 spectrum Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- 238000001816 cooling Methods 0.000 description 7
- 230000002441 reversible effect Effects 0.000 description 6
- 206010044048 Tooth missing Diseases 0.000 description 5
- 238000005461 lubrication Methods 0.000 description 5
- 238000000151 deposition Methods 0.000 description 4
- 239000000314 lubricant Substances 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 4
- 230000002708 enhancing effect Effects 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 230000036961 partial effect Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
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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
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0412—Cooling or heating; Control of temperature
- F16H57/0415—Air cooling or ventilation; Heat exchangers; Thermal insulations
- F16H57/0417—Heat exchangers adapted or integrated in the gearing
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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
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/028—Gearboxes; Mounting gearing therein characterised by means for reducing vibration or noise
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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
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/039—Gearboxes for accommodating worm gears
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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
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/042—Guidance of lubricant
- F16H57/0427—Guidance of lubricant on rotary parts, e.g. using baffles for collecting lubricant by centrifugal force
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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
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0434—Features relating to lubrication or cooling or heating relating to lubrication supply, e.g. pumps ; Pressure control
- F16H57/0446—Features relating to lubrication or cooling or heating relating to lubrication supply, e.g. pumps ; Pressure control the supply forming part of the transmission control unit, e.g. for automatic transmissions
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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
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/048—Type of gearings to be lubricated, cooled or heated
- F16H57/0498—Worm gearings
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Details Of Gearings (AREA)
Abstract
The invention discloses a vibration-damping noise-reducing gearbox and a lubricating oil self-circulation system thereof, wherein the gearbox comprises a base and an outer cover, the outer cover is arranged on the base to form a cavity, a motor is fixed in the cavity, the motor is in transmission connection with an output gear through a transmission mechanism positioned in the cavity, part of the output gear penetrates through the base and extends out of the base, the transmission mechanism is connected with the base and the outer cover through at least two gear shafts, the side wall of each gear shaft is at least concavely provided with an oil through groove, and the oil through groove axially penetrates through the gear shaft to communicate the base with the outer cover. The lubricating oil of gear box sets up the clearance through setting up at drive mechanism both ends from the circulation system, and the logical oil groove of cooperation gear shaft makes and forms the passageway that supplies the reciprocal circulation of lubricating oil to flow between base and the enclosing cover, when promoting lubricated effect, reduces the loss of lubricating oil, makes the noise change of whole life-span in-process little.
Description
Technical Field
The invention belongs to the technical field of gear boxes, and particularly relates to a vibration and noise reduction type gear box and a lubricating oil self-circulation system thereof.
Background
The gear box is an important part widely used in mechanical transmission, especially on an automobile, a common gear box contains a plurality of gears which are meshed with each other, when a pair of gears are meshed, meshing impact can be generated in the operation process to generate noise and vibration corresponding to the meshing frequency of the gears, when the gear box is subjected to load change (such as starting and locking) in an external force relation, the gears are pressed with each other to generate axial deviation, and friction noise (such as an oval mark part in fig. 11) can be generated between tooth surfaces, between a tooth end surface and a shell and between a shaft end and the shell due to relative sliding, in order to reduce various noises generated in the operation process of the gear box, the traditional gear box generally arranges a cooling lubricating oil circulating device on a speed reducer to achieve the purpose of enhancing the lubricating effect of a contact surface and further reduce the friction.
Like the patent of the Chinese utility model, a speed reducer cooling lubricating oil circulating device (application number: 201520518370.4), through being equipped with respectively on the inside top inner wall of reduction case and bottom inner wall respectively and advancing oil pipe and arrange the oil pipe, arrange oil pipe and connect gradually oil tank, oil pump and the cooling device of installing on the reduction case lateral wall, realized cooling lubricating oil's cyclic utilization, can effectively be to the inside reduction gear component cooling and lubrication of box simultaneously. Although the cooling lubricating oil circulating device can achieve the purpose of lubrication, the circulating device is generally suitable for a large gear box with high speed and severe environment, has higher cost and cannot be suitable for a small gear box with higher requirements on the use environment.
In order to improve the use environment of the gear box, the conventional gear box also achieves the purpose of enhancing the lubricating effect of the contact surface by adding oil holes in the shaft, for example, the invention patent in China is a middle shaft (application number: 201821563668.7) for an automobile gearbox, and the oil can be more easily distributed in the length direction of the shaft main body by arranging a plurality of oil inlet holes in the length direction of the shaft main body and an oil discharge channel communicated with the oil inlet holes, so that the purpose of improving the lubricating effect is achieved. Although the technical scheme can effectively reduce noise, the following defects exist:
1. the technical scheme that the oil inlet hole and the oil discharge channel are formed in the shaft main body is only suitable for a metal rotating shaft of a large gear box and cannot be suitable for a small gear box, particularly a small gear box used on an automobile air conditioner, and the oil inlet hole and the oil discharge channel which are long and suitable for oil inlet cannot be formed in a small shaft due to the fact that the shaft size is too small;
2. for the gear box with internal circulating lubrication, because the oil inlet hole and the oil discharge channel have limited space, lubricating oil cannot be stored and recycled, as the operation time of the gear box is prolonged, the grease is extruded out of a friction surface, the heat productivity is increased, the abrasion is increased, the viscosity of the grease is reduced, the lubricating effect of the gear box is reduced, the noise is increased, as the lubricating oil in a shaft continuously runs off, the gear box finally loses the lubricating function, and the service life of the gear box is shortened;
3. because the shaft is in the rotation process, the rigid contact of the shaft and the contact part of the gear box shell can generate friction, the centers of two ends of the shaft main body are provided with the oil inlet hole and the oil discharge channel, the rigidity of the shaft can be reduced, and the service life of the shaft can be shortened.
In order to improve the service environment of the gear box, the existing small gear box achieves the purpose of enhancing the lubricating effect of a contact surface by slotting a shell, for example, as the Chinese invention patent, a gear box structure (application number: 201810701012.5) with an oil groove avoids the problem that the stability is influenced by the heat expansion in a gear set by additionally arranging the oil storage groove on a bottom cover, so that the lubrication can be kept between gear transmission, the effect of vibration reduction and noise reduction is achieved, the friction resistance is reduced, the abrasion between gears is reduced, although the technical scheme can be used under the higher environmental requirement, the friction noise between a shaft and a shell can be only properly reduced, meanwhile, in the running process of the gear box, the shaft of the gear box is in rigid contact with the bottom cover, the lubricating oil in the bottom cover is continuously lost, and finally, the lubricating function of the gear box is lost, and the service life.
Accordingly, the inventors have sought to design a gearbox and its lubricating oil self-circulation system to solve the above problems.
Disclosure of Invention
The invention aims to: the utility model provides a type of making an uproar gearbox falls in damping sets up a plurality of oil grooves of leading to on drive mechanism's the gear shaft lateral wall in the gear box and communicates the base and the enclosing cover of gear box, and the lubricating oil of being convenient for flows between base and shell, makes and rotates the piece and float, realizes that the lubricated effect of transmission contact part reaches the biggest promotion, and then reduces vibration, noise reduction.
Another object of the present invention is to: the utility model provides a type of making an uproar gear box's lubricating oil self-lubricating system falls in damping sets up the clearance through the both ends at drive mechanism, and the logical oil groove of cooperation gear shaft makes and forms the passageway that supplies the reciprocal circulation of lubricating oil to flow between base and the enclosing cover, when promoting lubricated effect, reduces the loss of lubricating oil, makes the noise change of whole life-span in-process little.
In order to achieve the purpose, the invention adopts a technical scheme that:
the utility model provides a type of making an uproar gearbox falls in damping, includes base and enclosing cover, the enclosing cover is located form a cavity on the base, the cavity internal fixation has a motor, the motor is connected with an output gear through being located the drive mechanism transmission in the cavity, the output gear part passes the base extends to outside the base, drive mechanism through an at least gear shaft with base and enclosing cover are connected, the gear shaft lateral wall goes up the concave oil groove that leads to that is equipped with, lead to the oil groove axial run through in the gear shaft, and will base and enclosing cover intercommunication.
Preferably, the gear shaft lateral wall is last still to be concavely equipped with the oil storage tank, the oil storage tank bottom is the arc, the oil storage tank with lead to the oil tank interval setting and axial run through in the gear shaft.
Preferably, the oil storage tank is obliquely and symmetrically concavely provided with at least two oil storage parts away from the opening end of the oil storage tank, and the oil storage parts axially penetrate through the gear shaft.
Further, drive mechanism includes the final drive subassembly, the final drive subassembly includes worm and turbine, the worm is fixed in on the motor and with the skewed tooth meshing of turbine.
Furthermore, the transmission mechanism further comprises at least one transition gear, one end of the transition gear is in transmission connection with the turbine, and the other end of the transition gear is connected with the output gear.
Further, the turbine and the transition gear are respectively connected with the base and the outer cover through different gear shafts, and the turbine and the transition gear are respectively abutted with the arc-shaped bosses on the base and the outer cover through protrusions which are arranged on the side surfaces of the end parts and are in a thread shape or an annular shape.
Furthermore, the output gear to enclosing cover direction axial extension has a connecting axle, be equipped with a plurality of recesses on the connecting axle lateral wall and pass and the butt the base, the connecting axle is kept away from output gear end extend have one with the coaxial gear of output that the transition gear transmission is connected, the coaxial gear of output is kept away from the terminal surface of output gear is equipped with a plurality of oil holes of depositing and through a pivot with the enclosing cover is connected.
Preferably, the transmission mechanism is in clearance fit with the gear shaft, the gear shaft is integrally formed with the base, and the tail end of the gear shaft is fixedly connected with the outer cover in an assembling manner.
In order to achieve the purpose, the other technical scheme adopted by the invention is as follows:
the utility model provides a type of making an uproar gearbox falls in damping, includes base and enclosing cover, the enclosing cover is located form a cavity on the base, the cavity internal fixation has a motor, the motor is connected with an output gear through being located the drive mechanism transmission in the cavity, the output gear part passes the base extends to outside the base, drive mechanism through an at least gear shaft with base and enclosing cover are connected, the gear shaft lateral wall goes up the concave oil groove that leads to that is equipped with, lead to the oil groove axial run through in the gear shaft, and will base and enclosing cover intercommunication.
Preferably, the gear shaft lateral wall is last still to be concavely equipped with the oil storage tank, the oil storage tank bottom is the arc, the oil storage tank with lead to the oil tank interval setting and axial run through in the gear shaft.
Preferably, the oil storage tank is obliquely and symmetrically concavely provided with at least two oil storage parts away from the opening end of the oil storage tank, and the oil storage parts axially penetrate through the gear shaft.
Further, drive mechanism includes the final drive subassembly, the final drive subassembly includes worm and turbine, the worm is fixed in on the motor and with the skewed tooth meshing of turbine.
Furthermore, the transmission mechanism further comprises at least one transition gear, one end of the transition gear is in transmission connection with the turbine, and the other end of the transition gear is connected with the output gear.
Further, the turbine and the transition gear are respectively connected with the base and the outer cover through different gear shafts, and the turbine and the transition gear are respectively abutted with the arc-shaped bosses on the base and the outer cover through protrusions which are arranged on the side surfaces of the end parts and are in a thread shape or an annular shape.
Furthermore, the output gear to enclosing cover direction axial extension has a connecting axle, be equipped with a plurality of recesses on the connecting axle lateral wall and pass and the butt the base, the connecting axle is kept away from output gear end extend have one with the coaxial gear of output that the transition gear transmission is connected, the coaxial gear of output is kept away from the terminal surface of output gear is equipped with a plurality of oil holes of depositing and through a pivot with the enclosing cover is connected.
Preferably, the transmission mechanism is in clearance fit with the gear shaft, the gear shaft and the outer cover are integrally formed, and the tail end of the gear shaft is fixedly connected with the base in an assembling manner.
In order to achieve the above object, another technical solution adopted by the present invention is:
the utility model provides a type of making an uproar gearbox falls in damping, includes base and enclosing cover, the enclosing cover is located form a cavity on the base, the cavity internal fixation has a motor, the motor is connected with an output gear through being located the drive mechanism transmission in the cavity, the output gear part passes the base extends to outside the base, drive mechanism through an at least gear shaft with base and enclosing cover are connected, the gear shaft lateral wall goes up the concave oil groove that leads to that is equipped with, lead to the oil groove axial run through in the gear shaft, and will base and enclosing cover intercommunication.
Preferably, the gear shaft lateral wall is last still to be concavely equipped with the oil storage tank, the oil storage tank bottom is the arc, the oil storage tank with lead to the oil tank interval setting and axial run through in the gear shaft.
Preferably, the oil storage tank is obliquely and symmetrically concavely provided with at least two oil storage parts away from the opening end of the oil storage tank, and the oil storage parts axially penetrate through the gear shaft.
Further, drive mechanism includes the final drive subassembly, the final drive subassembly includes worm and turbine, the worm is fixed in on the motor and with the skewed tooth meshing of turbine.
Furthermore, the transmission mechanism further comprises at least one transition gear, one end of the transition gear is in transmission connection with the turbine, and the other end of the transition gear is connected with the output gear.
Further, the turbine and the transition gear are respectively connected with the base and the outer cover through different gear shafts, and the turbine and the transition gear are respectively abutted with the arc-shaped bosses on the base and the outer cover through protrusions which are arranged on the side surfaces of the end parts and are in a thread shape or an annular shape.
Furthermore, the output gear to enclosing cover direction axial extension has a connecting axle, be equipped with a plurality of recesses on the connecting axle lateral wall and pass and the butt the base, the connecting axle is kept away from output gear end extend have one with the coaxial gear of output that the transition gear transmission is connected, the coaxial gear of output is kept away from the terminal surface of output gear is equipped with a plurality of oil holes of depositing and through a pivot with the enclosing cover is connected.
Preferably, the transmission mechanism is in clearance fit with the gear shaft, and two ends of the gear shaft are respectively assembled and fixedly connected with the base and the outer cover.
In order to achieve the above purpose, the invention adopts another technical scheme as follows:
the utility model provides a type of making an uproar gearbox falls in damping, includes base and enclosing cover, the enclosing cover is located form a cavity on the base, the cavity internal fixation has a motor, the motor is connected with an output gear through being located the drive mechanism transmission in the cavity, the output gear part passes the base extends to outside the base, drive mechanism through an at least gear shaft with base and enclosing cover are connected, the gear shaft lateral wall goes up the concave oil groove that leads to that is equipped with, lead to the oil groove axial run through in the gear shaft, and will base and enclosing cover intercommunication.
Preferably, the gear shaft lateral wall is last still to be concavely equipped with the oil storage tank, the oil storage tank bottom is the arc, the oil storage tank with lead to the oil tank interval setting and axial run through in the gear shaft.
Preferably, the oil storage tank is obliquely and symmetrically concavely provided with at least two oil storage parts away from the opening end of the oil storage tank, and the oil storage parts axially penetrate through the gear shaft.
Further, drive mechanism includes the final drive subassembly, the final drive subassembly includes worm and turbine, the worm is fixed in on the motor and with the skewed tooth meshing of turbine.
Furthermore, the transmission mechanism further comprises at least one transition gear, one end of the transition gear is in transmission connection with the turbine, and the other end of the transition gear is connected with the output gear.
Further, the turbine and the transition gear are respectively connected with the base and the outer cover through different gear shafts, and the turbine and the transition gear are respectively abutted with the arc-shaped bosses on the base and the outer cover through protrusions which are arranged on the side surfaces of the end parts and are in a thread shape or an annular shape.
Furthermore, the output gear to enclosing cover direction axial extension has a connecting axle, be equipped with a plurality of recesses on the connecting axle lateral wall and pass and the butt the base, the connecting axle is kept away from output gear end extend have one with the coaxial gear of output that the transition gear transmission is connected, the coaxial gear of output is kept away from the terminal surface of output gear is equipped with a plurality of oil holes of depositing and through a pivot with the enclosing cover is connected.
Preferably, the transmission mechanism is in interference fit with the gear shaft, and two ends of the gear shaft are in clearance fit with the base and the outer cover respectively.
In order to achieve the other purpose, the invention adopts a technical scheme that: the utility model provides a type of making an uproar gear box's lubricating oil is from circulation system falls in damping, the type of making an uproar gear box is fallen in damping adopts above-mentioned technical scheme to realize, drive mechanism one end with base and gear shaft one end cooperation make drive mechanism one end formation clearance, the drive mechanism other end with shell and the cooperation of the gear shaft other end make the drive mechanism other end forms the clearance, it will to lead to the oil groove the clearance intercommunication at drive mechanism both ends makes form the passageway that supplies the reciprocal circulation of lubricating oil to flow between base and the enclosing cover.
Compared with the prior art, the gear shaft side wall of the transmission mechanism in the gear box is provided with the plurality of oil through grooves to communicate the base and the outer cover of the gear box, so that lubricating oil flows between the base and the shell, the lubricating effect of a transmission contact part is improved to the maximum extent, vibration is reduced, noise is reduced, a rotating part is in a floating state, rigid friction of the shaft is reduced, and the service life of the shaft is prolonged.
According to the lubricating oil self-circulation system of the gear box, the plurality of oil through grooves in the side wall of the gear shaft are matched with the gaps at the two ends of the transmission mechanism, so that a channel for the reciprocating circulation flow of the lubricating oil is formed between the base and the outer cover, the lubricating effect of the gear box is improved, the loss of the lubricating oil can be reduced, the noise change in the whole service life process is small, meanwhile, in the operation process of the gear box, the rotating part is in a floating state, the rigid contact friction between the shaft and the base and the outer cover is avoided, and the service life of the shaft.
Drawings
FIG. 1 is a perspective view of a first embodiment of a gearbox of the present invention;
FIG. 2 is a partially exploded perspective view of the gearbox of the first embodiment of the present invention;
FIG. 3 is an enlarged view at A in FIG. 2;
FIG. 4 is an enlarged view at B of FIG. 2;
FIG. 5 is a partially exploded perspective view of another perspective of the gearbox of the first embodiment of the present invention;
FIG. 6 is an enlarged view in cross section of a step of a gear case of the first embodiment of the present invention and a partial enlarged view thereof;
FIG. 7 is an enlarged cross-sectional stepped view of a gearbox according to a second embodiment of the present invention;
FIG. 8 is an enlarged view in cross-section of a third embodiment of a gearbox of the present invention with a step and a portion thereof;
FIG. 9 is an enlarged view in cross-section of a step of a gearbox of a fourth embodiment of the present invention and a partial enlarged view thereof;
FIG. 10 is a graph of noise spectra of forward and reverse rotation of a motor of the prior art and the present invention;
FIG. 11 is a noise spectrum diagram of a gearbox in the prior art when a motor rotates in a forward and reverse direction;
FIG. 12 is a noise spectrum diagram of the gear box according to the first embodiment of the present invention when the motor is rotating in the forward and reverse directions;
FIG. 13 is a noise spectrum diagram of a gear box according to a second embodiment of the present invention when the motor is rotating in both directions;
FIG. 14 is a noise spectrum diagram of a gearbox according to a third embodiment of the present invention when the motor is rotating in both directions;
FIG. 15 is a noise spectrum diagram of a gearbox according to a fourth embodiment of the present invention when the motor is rotating in both directions.
Illustration of the drawings:
1. the base, 2, the enclosing cover, 21, the boss, 211, the bulge, 3, output gear, 31, the connecting axle, 311, the recess, 32, output coaxial gear, 321, the oil storage hole, 4, the motor, 5, drive mechanism, 51, the final drive subassembly, 511, the worm, 512, the turbine, 5121, turbine coaxial gear, 5122, the arch, 52, transition gear, 521, transition coaxial gear, 6, first gear axle, 61, logical oil groove, 62, the oil storage tank, 621, the oil storage portion, 7, the second gear axle.
Detailed Description
The embodiments of the present invention will be described in detail with reference to the accompanying drawings, which are for reference and illustration only and are not to be construed as limiting the scope of the invention.
Example 1
Referring to fig. 1 to 6, which are first embodiments of the present invention, a vibration damping and noise reducing gearbox includes a base 1, an outer cover 2, a transmission mechanism 5, an output gear 3, a motor 4, and at least one gear shaft, where the outer cover 2 is covered on the base 1 to form a cavity, the motor 4, the transmission mechanism 5, and the at least one gear shaft are accommodated in the cavity, a portion of the output gear 3 passes through the base 1 and extends to the outside of the base 1, the transmission mechanism 5 is connected with the base 1 and the outer cover 2 through the gear shaft, one end of the transmission mechanism 5 is in transmission connection with the motor 4, the other end of the transmission mechanism 5 is in transmission connection with the output gear 3, and the motor 4 drives the output gear 3 to rotate through the transmission mechanism 5.
Referring to fig. 2, 3 and 6, an annular fixing table for fixing the whole gear box extends outwards from three corners of the base 1, a concave bottom of the base 1 is provided with an annular boss, a cavity for accommodating and fixing the motor 4 and a through hole for the output gear 3 to pass through, a bottom of the annular boss is provided with a semi-annular protrusion for forming a step, the cavity is located below the annular boss, and the through hole for the output gear 3 to pass through is located beside the cavity, in the present embodiment, the base 1 and at least one gear shaft are integrally formed to reduce the assembling process of the gear box, in view of the structure of the transmission mechanism 5 of the present embodiment, the number of the gear shafts is preferably two, that is, the first gear shaft 6 and the second gear shaft 7, the first gear shaft 6 is located in the annular boss, at least one oil through groove 61 is concavely arranged on the side wall of the first gear shaft 6, and the oil through groove 61 axially penetrates through the first gear shaft 6, the oil storage groove 62 is at least concavely arranged on the side wall of the first gear shaft 6, the bottom of the oil storage groove 62 is arc-shaped, so that lubricating oil in the oil storage groove 62 can flow conveniently, the oil storage groove 62 and the oil through groove 61 are arranged at intervals and axially penetrate through the first gear shaft 6, the oil storage groove 62 is far away from the opening end and is at least symmetrically and obliquely concavely provided with two oil storage parts 621, the oil storage parts 621 axially penetrate through the first gear shaft 6, the second gear shaft 7 is located in a blind hole near the first gear shaft 6, and the second gear shaft 7 is identical to the first gear shaft 6 in structure and is not explained any more.
Referring to fig. 2, 4 and 5, the transmission mechanism 5 includes a main transmission assembly 51 and at least one transition gear 52, preferably a transition gear 52 in this embodiment, the transition gear 52 is formed by integrally forming a transition coaxial gear 521 extending on straight teeth and straight teeth, the transition gear 52 is connected to the base 1 and the outer cover 2 through a second gear shaft 7, one end of the main transmission assembly 51 is in transmission connection with the motor 4, the other end of the main transmission assembly 51 is in transmission connection with the output gear 3 through the transition gear 52, the main transmission assembly 51 includes a worm 511 and a worm wheel 512, the worm 511 is fixed on the output shaft of the motor 4 and is engaged with the helical teeth of the worm wheel 512, in this embodiment, the worm wheel 512 is formed by integrally forming a worm wheel coaxial gear 5121 extending on helical teeth and helical teeth, the worm wheel coaxial gear 5121 is engaged with the straight teeth of the transition gear 52, the worm wheel 512 is connected to the base 1 and the outer cover 2 through a first, in this embodiment, the side surface of the end of the turbine coaxial gear 5121 is provided with a protrusion 5122 in a thread shape or in an annular shape, as shown in fig. 4, the side surface of the end of the helical tooth of the turbine 512 and the side surface of the end of the transition gear 52 are both provided with protrusions with the same or opposite rotation direction as the protrusion 5122, and all the thread-shaped or annular protrusions on the turbine 512 and the transition gear 52 are used for abutting against the arc-shaped protrusions of the base 1 and the outer cover 2, as shown in fig. 6, so as to prevent the lubricant from being extruded out during the rotation of each gear.
Referring to fig. 2 and 5, the output gear 3 is used for outputting the torque of the gear box to achieve the purpose of changing the rotating speed of other parts, the output gear 3 is formed by integrally forming a tooth-missing straight tooth, a connecting shaft 31 and an output coaxial gear 32, the tooth-missing straight tooth penetrates through a through hole of the base 1 to extend out of the base 1 for being connected with an external part, the connecting shaft 31 is formed by extending an end face of the tooth-missing straight tooth, the connecting shaft 31 extends into the through hole of the base 1 and abuts against the base 1, a plurality of grooves 311 are formed in the side wall of the connecting shaft 31, the height of the plurality of grooves 311 is smaller than that of the connecting shaft 31, the plurality of grooves 311 are used for storing lubricating oil, so that the connecting shaft 31 is fully lubricated with the base 1 in the rotating process and friction is reduced, the output coaxial gear 32 is formed by extending the connecting shaft 31 away from the tooth-missing straight tooth end, the end surface of the output coaxial gear 32 far away from the tooth-missing straight teeth is provided with a plurality of oil storage holes 321 and is connected with the outer cover 2 through a rotating shaft, and the plurality of oil storage holes 321 are used for storing lubricating oil so that the rotating shaft on the end surface of the output coaxial gear 32 is fully lubricated with the outer cover 2 in the rotating process.
Referring to fig. 5, the outer cover 2 is used for covering the base 1 and fixing each gear and the motor 4 in the cavity, the concave bottom of the outer cover 2 is provided with two annular bosses 21 for matching with the ends of the turbine 512 and the transition gear 52, and the inner hole of the boss 21 is provided with a semi-annular bulge 211 forming a step so that gaps are formed between the ends of the turbine 512 and the transition gear 52 and the outer cover 2 respectively.
Referring to fig. 6, in this embodiment, the worm wheel 512 is in clearance fit with the first gear shaft 6, the transition gear 52 is in clearance fit with the second gear shaft 7, the first gear shaft 6, the second gear shaft 7 and the base 1 are integrally formed, and the ends of the first gear shaft 6 and the second gear shaft 7 are in interference fit with the blind hole in the center of the boss 21 on the outer cover 2, so as to assemble and fix the ends of the first gear shaft 6 and the second gear shaft 7.
Referring to fig. 2 and 6, the principle of the gear box of the present embodiment is as follows: the motor 4 drives the worm 511 to rotate, the worm 511 drives the helical teeth on the worm wheel 512 to rotate, and further drives the worm wheel coaxial gear 5121 to rotate, the worm wheel coaxial gear 5121 drives the straight teeth on the transition gear 52 to rotate, and further drives the transition coaxial gear 521 to rotate, the transition coaxial gear 521 drives the straight teeth of the output coaxial gear 32 to rotate, and finally drives the output gear 3 to rotate.
Referring to fig. 2 and 6, in the operation process of the gear box of the present embodiment, since the first gear shaft 6 and the second gear shaft 7 are fixed on the housing 1, the first gear shaft 6 and the second gear shaft 7 do not rotate along with the turbine 512 and the transition gear 52, and the turbine 512 and the transition gear 52 form a rotating member of the present embodiment, when the oil through grooves and the oil storage grooves on the two gear shafts are filled with lubricating oil, the turbine 512 and the transition gear 52 are both in a slightly floating state, so as to effectively reduce meshing impact, noise and vibration generated in the meshing operation process of the turbine 512 and the transition gear 52 with each other and with other gears, and at the same time, enhance the lubricating effect between the turbine 512 and the transition gear 52 and the gear shafts, reduce frictional noise, and because the two gear shafts do not rotate during the rotation process of the turbine 512 and the transition gear 52 relative to the corresponding gear shafts, the turbine 512 and the transition gear 52 enable lubricating oil in the gap outside the corresponding gear shaft to generate centrifugal action, the lubricating oil outside the gear shaft enters the oil storage part to be stored, the motor 4 rotates forwards and backwards to directly influence the oil storage amount of the two oil storage parts on the same gear shaft, when the load of the gear box changes under the external force relationship, the gears are extruded to each other to generate axial deviation, and the noise variation of the friction between the gear end surface part and the shell and the base is reduced because the lubricating oil is stored in the gap between the gear end surface and the outer cover 2 and the base 1.
Example 2
Referring to fig. 7, a second embodiment of the present invention is shown, which is different from the first embodiment in that: the first gear shaft 6 and the second gear shaft 7 of the present embodiment are integrally formed with the outer cover 2, the ends of the first gear shaft 6 and the second gear shaft 7 are in interference fit with the blind holes at the centers of the bosses on the base 1, so as to assemble and fix the ends of the first gear shaft 6 and the second gear shaft 7, and other structures and principles are the same as those of the first embodiment and will not be further described herein.
Example 3
Referring to fig. 8, a third embodiment of the present invention is provided, which is different from the first embodiment in that: in the present embodiment, the two ends of the first gear shaft 6 and the second gear shaft 7 are respectively fixedly connected with the base 1 and the outer cover 2, so as to fixedly assemble the two ends of the first gear shaft 6 and the second gear shaft 7, and other structures and principles are the same as those of the first embodiment and will not be further described herein.
Example 4
Referring to fig. 9, a fourth embodiment of the present invention is provided, which is different from the first embodiment in that: in the embodiment, the turbine 512 is in interference fit with the first gear shaft 6, the transition gear 52 is in interference fit with the second gear shaft 7, the turbine 512 and the transition gear 52 are prevented from rotating relative to corresponding gear shafts in the rotating process, the turbine 512, the first gear shaft 6, the transition gear 52 and the second gear shaft 7 jointly form a rotating part in the embodiment, two ends of the first gear shaft 6 and two ends of the second gear shaft 7 are in clearance fit with the base 1 and the outer cover 2 respectively, and because gaps are arranged at two ends of the two gear shafts and can store lubricating oil, the position of the turbine 512 can be automatically finely adjusted in the rotating process of the turbine 512 and the transition gear 52, so that meshing impact, noise and vibration generated in the process of meshing operation of the turbine 512 and the transition gear 52 with other gears are reduced, meanwhile, the lubricating effect at two ends of the gear shafts is enhanced, the friction noise is reduced, when the oil grooves and, because the first gear shaft 6 rotates along with the turbine 512, the second gear shaft 7 rotates along with the transition gear 52, and the lubricating oil in the oil storage grooves of the two gear shafts rotates along with the first gear shaft, so that the lubricating oil in the oil storage grooves is gathered in the oil storage parts under the action of centrifugal force and stored, the forward and reverse rotation of the motor 4 directly influences the oil storage amount of the two oil storage parts on the same gear shaft, and other structures and principles are the same as those of the first embodiment and are not described herein.
Referring to fig. 1 to 9, in the lubricating oil self-circulation system of the vibration-damping and noise-reducing gearbox of the present invention, since gaps are provided between both ends of the turbine 512 and both ends of the first gear shaft 6, and simultaneously, the matching surfaces of the base 1, the outer cover 2 and the turbine 512 are provided with semi-annular protrusions to form steps, the annular protrusions at both ends of the turbine 512 are respectively abutted against the semi-annular protrusions of the base 1 and the outer cover 2 to form gaps at both ends of the turbine 512, the oil through groove 61 and the oil storage groove 62 on the first gear shaft 6 communicate the gaps at both ends of the turbine 512, so that a channel for reciprocating circulation flow of lubricating oil is formed between the base 1 and the outer cover 2, when the turbine 512 is subjected to load change under the external force relationship, the turbine 512 and other gears are pressed against each other, axial deviation occurs, the lubricating oil in the gap at one end of the turbine 512 is pressed into the gap at the other end of the turbine 512, the lubricating oil in the gap at the other end of the turbine 512 returns to the gap at one end of the turbine 512 through the oil groove 61, and is circulated repeatedly, and the self-circulation principle of the lubricating oil on the transition gear 52 is the same as that of the lubricating oil on the turbine 512, and will not be described again here.
Because the viscosity of the lubricating oil in the gear box directly influences the protective capacity of various damages of the gear and simultaneously influences the lubricating effect and the heat absorption cooling effect of the friction surface, the lubricating oil self-circulation system of the gear box can ensure that the lubricating oil can self-circulate in the closed channel, not only fully lubricate each contact surface, but also timely take away the heat generated by the running of the gear and cool the gear, the self-circulation lubricating oil can not be lost outside the channel, and a large amount of friction particles can not be generated due to the friction of the contact surfaces, so that the viscosity of the lubricating oil of the self-circulation system can not be changed along with the increase of the running time of the gear box, the service time of the lubricating oil is effectively prolonged, the service life of the gear box is prolonged, the vibration and the noise in the service life process are reduced, and the self-circulation system, the loss of lubricating oil is reduced while the precision is maintained, and the noise change in the whole service life process is very little.
Compared with the existing gear box structure, the gear box has the advantages that the oil through groove and the oil storage groove are formed in the shaft side of the gear box, the base is communicated with the outer cover, the circulation of lubricating oil on the shaft side and the two ends of the shaft side is realized, a rotating part is in a floating state in the operation process of the gear box, the lubricating effect is enhanced, and the service life of the shaft is ensured.
The same motor is used to perform noise test on the existing gearbox and the gearbox of the four embodiments of the present invention, wherein the noise spectrum diagram of the forward and reverse rotation of the motor is shown in fig. 10, the noise spectrum diagram of the existing gearbox is shown in fig. 11, the noise spectrum diagrams of the gearbox of the four embodiments of the present invention are shown in fig. 12-15, and the test results are shown in the following table 1:
TABLE 1
In the above test, CW is clockwise rotation and CCW is reverse rotation, both the gearbox noise and the motor noise are averaged.
The test results show that: compared with the existing gear box, the noise of the gear box is reduced by 4 dBA-8 dBA, meanwhile, the noise of the gear box is closer to the noise of a motor, compared with the existing gear box, the noise elimination effect of the gear box is better, a lubricant can be effectively used as a buffer element, the noise generated by vibration between running parts is reduced, meanwhile, the lubricant is stored, the lubrication loss between the moving parts is reduced to the maximum degree, and the buffer effect of the lubricant is reduced to the maximum degree.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention.
Claims (10)
1. The utility model provides a type of making an uproar gearbox falls in damping, includes base and enclosing cover, the enclosing cover is located form a cavity on the base, a serial communication port, be fixed with a motor in the cavity, the motor is connected with an output gear through being located the drive mechanism transmission in the cavity, output gear part passes the base extends to outside the base, drive mechanism through an at least gear shaft with base and enclosing cover are connected, the gear shaft lateral wall indent is equipped with leads to the oil groove, lead to the oil groove axial run through in the gear shaft, and will base and enclosing cover intercommunication.
2. The vibration and noise reduction gearbox according to claim 1, wherein an oil storage groove is further concavely formed in the side wall of the gear shaft, the bottom of the oil storage groove is arc-shaped, and the oil storage groove and the oil through groove are arranged at intervals and axially penetrate through the gear shaft.
3. The vibration and noise reduction gearbox according to claim 2, wherein the oil storage tank is provided with at least two oil storage portions which are obliquely and symmetrically concave away from the opening end of the oil storage tank, and the oil storage portions axially penetrate through the gear shaft.
4. The vibration and noise reducing gearbox of claim 1, wherein the transmission mechanism includes a main transmission assembly including a worm and a worm gear, the worm being fixed to the motor and engaging with helical teeth of the worm gear.
5. The vibration and noise reducing gearbox of claim 4, wherein the transmission further comprises at least one transition gear, one end of the transition gear is in transmission connection with the turbine, and the other end of the transition gear is in connection with the output gear.
6. The vibration and noise reduction gearbox according to claim 5, wherein the turbine and the transition gear are connected to the base and the outer cover through different gear shafts, respectively, and the turbine and the transition gear are in contact with the arc-shaped bosses on the base and the outer cover through protrusions which are arranged on the side surfaces of the end portions and are in a thread shape or an annular shape.
7. The vibration and noise reducing gearbox according to claim 4, wherein the output gear has a connecting shaft extending axially toward the outer cover, the connecting shaft has a plurality of grooves on a side wall thereof and passes through and abuts against the base, the connecting shaft has an output coaxial gear extending away from the output gear and in transmission connection with the transition gear, and an end surface of the output coaxial gear away from the output gear has a plurality of oil storage holes and is connected with the outer cover through a rotating shaft.
8. The vibration and noise reduction gearbox according to claim 1, wherein the transmission mechanism is in clearance fit with the gear shaft, the gear shaft is integrally formed with the base, and the tail end of the gear shaft is fixedly connected with the outer cover in an assembling way;
or the gear shaft and the outer cover are integrally formed, and the tail end of the gear shaft is fixedly connected with the base in an assembling way;
or the two ends of the gear shaft are respectively assembled and fixedly connected with the base and the outer cover.
9. The vibration and noise reducing gearbox according to claim 1, wherein the transmission mechanism is in interference fit with the gear shaft, and two ends of the gear shaft are in clearance fit with the base and the outer cover respectively.
10. The vibration and noise reduction type gearbox lubricating oil self-circulation system as claimed in any one of claims 1-9, wherein one end of the transmission mechanism is matched with one end of the base and one end of the gear shaft, so that a gap is formed at one end of the transmission mechanism, the other end of the transmission mechanism is matched with the other end of the shell and the other end of the gear shaft, so that a gap is formed at the other end of the transmission mechanism, and the oil through groove communicates the gaps at the two ends of the transmission mechanism, so that a channel for the reciprocating circulation flow of lubricating oil is formed between the base and the outer cover.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911338433.7A CN111022622A (en) | 2019-12-23 | 2019-12-23 | Vibration-damping noise-reducing gearbox and lubricating oil self-circulation system thereof |
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| CN201911338433.7A CN111022622A (en) | 2019-12-23 | 2019-12-23 | Vibration-damping noise-reducing gearbox and lubricating oil self-circulation system thereof |
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| CN111022622A true CN111022622A (en) | 2020-04-17 |
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