CN109114199B - Speed adjusting device and test machine with same - Google Patents
Speed adjusting device and test machine with same Download PDFInfo
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- CN109114199B CN109114199B CN201811240078.5A CN201811240078A CN109114199B CN 109114199 B CN109114199 B CN 109114199B CN 201811240078 A CN201811240078 A CN 201811240078A CN 109114199 B CN109114199 B CN 109114199B
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- 238000012360 testing method Methods 0.000 title claims abstract description 22
- 230000001105 regulatory effect Effects 0.000 claims abstract description 42
- 230000005540 biological transmission Effects 0.000 claims abstract description 21
- 238000005461 lubrication Methods 0.000 claims abstract description 8
- 238000009434 installation Methods 0.000 claims description 18
- 238000007599 discharging Methods 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 abstract description 23
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 178
- 238000002474 experimental method Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000007921 spray Substances 0.000 description 4
- 238000013016 damping Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000010687 lubricating oil Substances 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/042—Guidance of lubricant
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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
- F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
-
- 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
- F16H57/0456—Lubrication by injection; Injection nozzles or tubes therefor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- General Details Of Gearings (AREA)
Abstract
The invention provides a speed regulating device and a testing machine with the same, wherein the speed regulating device comprises a mounting shell and a transmission mechanism, the mounting shell is provided with a mounting cavity for mounting the transmission mechanism, the transmission mechanism comprises a gear assembly, and the mounting cavity comprises: a first oil chamber; the gear assembly is arranged in the second oil cavity; the first oil cavity is communicated with the second oil cavity, a second oil inlet is formed in the side wall of the second oil cavity, so that oil enters the second oil cavity from the second oil inlet to be sprayed into the gear set for lubrication, an oil outlet is further formed in the mounting cavity, and after the oil in the mounting cavity reaches a preset position, the oil outlet discharges the oil so that the oil in the second oil cavity cannot completely submerge the gear assembly, and the resistance of the gear assembly during rotation is reduced. The speed regulating device solves the problem of high energy consumption of the overspeed testing machine in the prior art.
Description
Technical Field
The invention relates to the technical field of mechanical equipment detection, in particular to a speed regulating device and a testing machine with the same.
Background
At present, although a series of analysis tools such as finite element software can be used for theoretical calculation and strength analysis of a rotating workpiece, the impeller has complex shape and a plurality of unpredictable factors such as stress concentration, material or processing defects and the like, so that a certain gap exists between theoretical analysis and real test. Therefore, overspeed testing of impellers is the only means to ensure their safety and reliability. Most of the traditional impeller overspeed testing machines are directly driven by a motor or driven by a belt, the rotating speed can only be generally 10000r/min-25000r/min, but the working rotating speed of most of rotors in the existing rotating machines such as a gas compressing wheel, an expanding wheel, a turbine, a wheel disc, a blade disc and a centrifugal rotor is over 40000r/min, and the overspeed test is limited by the rotating speed for some centrifugal impellers with higher rated working rotating speeds.
In order for a centrifuge impeller of higher rated operating speed to be able to perform an overspeed test, the maximum rotational speed of the impeller overspeed tester must exceed 40000r/min. Therefore, when an overspeed test is carried out, a secondary speed increasing mechanism is needed, the oil is fully immersed in the existing oil cavity, and the secondary speed increasing mechanism receives larger resistance of lubricating oil when rotating in the oil cavity, so that the rotating speed is influenced, the power of a motor is greatly consumed, and the acceleration and consumption reduction are not facilitated.
Disclosure of Invention
The invention mainly aims to provide a speed regulating device and a testing machine with the same, so as to solve the problem of high energy consumption of an overspeed testing machine in the prior art.
In order to achieve the above object, according to one aspect of the present invention, there is provided a speed regulating device including a mounting housing having a mounting cavity for mounting a transmission mechanism, the transmission mechanism including a gear assembly, and the mounting cavity including: a first oil chamber; the gear assembly is arranged in the second oil cavity; the first oil cavity is communicated with the second oil cavity, a second oil inlet is formed in the side wall of the second oil cavity, so that oil enters the second oil cavity through the second oil inlet to be sprayed into the gear assembly for lubrication, an oil outlet is further formed in the mounting cavity, and after the oil in the mounting cavity reaches a preset position, the oil outlet discharges the oil so that the oil in the second oil cavity cannot completely submerge the gear assembly, and the resistance of the gear assembly during rotation is reduced.
Further, the plurality of second oil inlets are arranged on the side wall of the second oil cavity at intervals so as to spray oil into the second oil cavity; the oil outlet is arranged on the side wall of the first oil cavity and used for discharging oil in the installation cavity, the second oil cavity is arranged above the first oil cavity, so that the oil enters the second oil cavity from the second oil inlet and flows to the first oil cavity through the second oil cavity, and is discharged out of the installation cavity from the oil outlet.
Further, the gear assembly includes: the driving gear is used for being connected with an output shaft of the motor so that the motor drives the driving gear to rotate; the driving gear is meshed with the driven gear to drive the driven gear to rotate; the driving gear and the driven gear are both positioned in the second oil cavity, the driven gear is in driving connection with the impeller, the reference diameter of the driving gear is larger than that of the driven gear, and the motor is in driving connection with the impeller through the gear assembly so as to realize speed-increasing driving of the impeller.
Further, the transmission mechanism further includes: the motor is connected with the power input wheel so as to drive the power input wheel to rotate; the power input shaft comprises a first connecting part and a second connecting part, the power input wheel is connected with the first connecting part, the driving gear is connected with the second connecting part, and the motor drives the power input shaft to rotate through the power input wheel so as to drive the power input shaft to drive the driving gear to rotate.
Further, the first connecting portion is a conical shaft, the power input wheel is provided with a conical hole matched with the conical shaft, the conical shaft is inserted into the conical hole of the power input wheel, and the diameter of one end, close to the second connecting portion, of the conical shaft is larger than that of one end, far away from the second connecting portion, of the conical shaft.
Further, one end of the first connecting portion, which is far away from the second connecting portion, is provided with a positioning piece, and the positioning piece is connected with the power input shaft so as to position the power input wheel on the power input shaft.
Further, the speed regulating device further comprises: the gear assembly is connected with the impeller through the mandrel so as to drive the impeller to rotate; the damper is arranged in the first oil cavity and connected with the mandrel.
Further, a damper is disposed around the spindle to reduce vibrations of the spindle.
Further, the installation shell comprises a damper chassis, the damper is arranged on the damper chassis, and the speed regulating device further comprises a vibration sensor which is arranged on the damper chassis to detect the vibration of the damper chassis.
Further, the installation casing includes the apron, and the power input wheel sets up in the apron outside, and speed adjusting device still includes speed sensor, is equipped with the sensor support on the installation casing, and speed sensor installs on the sensor support in order to measure the power input wheel rotational speed through detecting the number of turns of power input wheel.
Further, the side wall of the first oil cavity is provided with one or more first oil inlets, and the first oil inlets are used for supplying oil to the first oil cavity.
According to another aspect of the invention, a testing machine is provided, which comprises a driving device and a speed regulating device, wherein the driving device is in driving connection with an impeller through the speed regulating device so as to perform speed experiments on the impeller, and the speed regulating device is the speed regulating device.
The speed regulating device comprises a mounting shell and a transmission mechanism, wherein a gear assembly of the transmission mechanism is arranged in the mounting cavity, the mounting cavity is divided into two cavities, a first oil cavity and a second oil cavity, the position of the second oil cavity is higher than that of the first oil cavity, the gear assembly is arranged in the second oil cavity, lubricating oil is sprayed from a second oil inlet on the side wall of the second oil cavity and is sprayed to a place where gears are meshed for lubrication, the first oil cavity is communicated with the second oil cavity, the oil flows into the first oil cavity after passing through the gear assembly, oil is supplied to devices in the first oil cavity, a second oil inlet is arranged on the side wall of the second oil cavity, one or more second oil inlets are arranged, an oil outlet is further arranged on the mounting shell, the oil outlet is matched with the second oil inlet to keep the first oil cavity full of the oil, the position of the oil in the second oil cavity is not immersed in the gear assembly, so that the gear assembly can not be stirred in the rotation process, and simultaneously, the oil sprayed out of the second oil inlet can effectively lubricate the gear assembly, and solve the problems that in the prior art, the overspeed testing machine is stirred in the rotation, and the oil is greatly stirred in the rotation.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:
fig. 1 shows a schematic overall structure of an embodiment of a speed regulating device according to the present invention; and
fig. 2 shows a cross-sectional view of an embodiment of the governor device of the present invention.
Wherein the above figures include the following reference numerals:
10. a mounting shell; 11. a first oil chamber; 12. a second oil chamber; 13. a second oil inlet; 14. an oil outlet; 15. a damper chassis; 16. a cover plate; 17. a first oil inlet; 20. a damper; 30. a drive gear; 40. a driven gear; 50. a power input wheel; 60. a power input shaft; 61. a first connection portion; 62. a second connecting portion; 70. a positioning piece; 80. a mandrel; 90. a vibration sensor; 100. a sensor holder.
Detailed Description
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.
The present invention provides a speed regulating device, please refer to body 1 and fig. 2, the speed regulating device comprises a mounting housing 10 and a transmission mechanism, the mounting housing 10 has a mounting cavity for mounting the transmission mechanism, the transmission mechanism comprises a gear assembly, the mounting cavity comprises: a first oil chamber 11, a second oil chamber 12, and a gear assembly disposed within the second oil chamber 12; the first oil cavity 11 is communicated with the second oil cavity 12, a second oil inlet 13 is formed in the side wall of the second oil cavity 12, so that oil enters the second oil cavity 12 from the second oil inlet 13 to spray oil to the gear assembly for lubrication, an oil outlet 14 is further formed in the mounting cavity, and after the oil in the mounting cavity reaches a preset position, the oil outlet 14 discharges oil so that the oil in the second oil cavity 12 cannot completely submerge the gear assembly, and resistance to rotation of the gear assembly is reduced.
The speed regulating device comprises a mounting shell 10 and a transmission mechanism, wherein a gear assembly of the transmission mechanism is arranged in the mounting cavity, the mounting cavity is divided into two cavities, namely a first oil cavity 11 and a second oil cavity 12, the second oil cavity 12 is higher than the first oil cavity 11, the gear assembly is arranged in the second oil cavity 12, lubricating oil is sprayed from a second oil inlet 13 on the side wall of the second oil cavity 12 and is sprayed to a gear meshing place for lubrication, the first oil cavity 11 is communicated with the second oil cavity 12, the oil flows into the first oil cavity 11 after passing through the gear assembly, oil is supplied to devices in the first oil cavity 11, one or more second oil inlets 13 are arranged on the side wall of the second oil cavity 12, an oil outlet 14 is further arranged on the mounting shell 10, the oil outlet 14 is matched with the second oil inlet 13 to keep the first oil cavity 11 full of the oil, the oil position in the second oil cavity 12 is not immersed in the gear assembly, so that the gear assembly is not stirred in the rotation process, the generated resistance is avoided, meanwhile, the oil sprayed from the second oil inlet can effectively lubricate the gear assembly, and the problem of large oil stirring in the rotation test in the prior art is solved.
In an alternative first embodiment of the invention, the oil in the installation cavity is controlled by setting the pipe diameters of the second oil inlet 13 and the oil outlet 14.
In an alternative second embodiment of the invention, a liquid level sensor is arranged in the installation cavity, the liquid level sensor is installed according to the required height of the oil, and after the oil exceeds a preset position, the oil outlet is opened to discharge oil so as to maintain the liquid level of the oil in the installation cavity.
In an alternative third embodiment of the present invention, the oil outlet 14 is installed at a preset position, and after the oil in the installation cavity exceeds the position of the oil outlet 14, the oil is discharged from the oil outlet 14.
The second oil inlets 13 are multiple, and the multiple second oil inlets 13 are arranged on the side wall of the second oil cavity 12 at intervals so as to spray oil into the second oil cavity 12; wherein, the oil outlet 14 is arranged on the side wall of the first oil cavity 11 for discharging the oil in the installation cavity; the second oil chamber 12 is disposed above the first oil chamber 11 such that oil enters the second oil chamber 12 from the second oil inlet 13 and flows through the second oil chamber 12 to the first oil chamber 11, and exits the installation chamber from the oil outlet 14.
As shown in fig. 2, in this embodiment, a plurality of second oil inlets 13 are disposed on the outer wall of the second oil chamber 12, and the plurality of second oil inlets 13 can spray oil onto the gear assembly at the same time to ensure lubrication and heat dissipation effects, the oil outlet 14 in this embodiment is disposed on the first oil chamber 11, the second oil chamber 12 is disposed directly above the first oil chamber 11, oil enters the mounting chamber through the second oil inlets 13 on the second oil chamber 12, and is discharged through the oil outlet 14 on the first oil chamber 11.
The gear assembly includes: the driving gear 30, the driving gear 30 is used for being connected with the output shaft of the motor, so that the motor drives the driving gear 30 to rotate; the driven gear 40, the driving gear 30 is meshed with the driven gear 40 to drive the driven gear 40 to rotate; the driving gear 30 and the driven gear 40 are both located in the second oil cavity 12, the driven gear 40 is used for being connected with the impeller, and the reference diameter of the driving gear 30 is larger than the reference diameter of the driven gear 40, so that the motor is in driving connection with the impeller through the gear assembly, and speed-up driving of the impeller is achieved.
The transmission mechanism further includes: the power input wheel 50, the motor is connected with the power input wheel 50 to drive the power input wheel 50 to rotate; the power input shaft 60, the power input shaft 60 includes a first connecting portion 61 and a second connecting portion 62, the power input wheel 50 is connected with the first connecting portion 61, the driving gear 30 is connected with the second connecting portion 62, and the motor drives the power input shaft 60 to rotate through the power input wheel 50 so as to drive the power input shaft 60 to drive the driving gear 30 to rotate.
As shown in fig. 1 and 2, the transmission mechanism in this embodiment includes a gear assembly and a pulley assembly, the pulley assembly is in driving connection with the gear assembly, the motor drives the gear assembly to rotate through driving the pulley assembly, the gear assembly includes a driving gear 30 and a driven gear 40, the pulley assembly includes a power input wheel 50, the power input wheel 50 is connected with the gear assembly through a power input shaft 60, the pulley assembly drives the power input shaft 60 to rotate, the power input shaft 60 drives the driving gear 30 to rotate, the reference diameter of the driving gear 30 is larger than the reference diameter of the driven gear 40, so that the purpose of improving the rotating speed is achieved, and the specific reference diameter size ratio is set according to the requirement of the rotating speed ratio.
The first connecting portion 61 is a tapered shaft, the power input wheel 50 is provided with a tapered hole matched with the tapered shaft, the tapered shaft is inserted into the tapered hole of the power input wheel 50, and the diameter of one end of the tapered shaft, which is close to the second connecting portion 62, is larger than the diameter of one end of the tapered shaft, which is far away from the second connecting portion 62.
The end of the first connecting portion 61 remote from the second connecting portion 62 is provided with a positioning member 70, and the positioning member 70 is connected to the power input shaft 60 to position the power input wheel 50 on the power input shaft 60.
As shown in fig. 2, the power input shaft 60 in this embodiment is a tapered shaft, and the tapered shaft has a smaller diameter at the end of the tapered shaft away from the tapered shaft, so that the power input wheel 50 has a tapered hole matching with the tapered shaft, so that the power input wheel 50 is sleeved outside the power input shaft 60, the embodiment further includes a positioning member 70, the positioning member 70 is disposed at the end of the tapered shaft with a smaller section, the positioning member 70 is a cover plate with a hole in the middle, in addition, a threaded hole is disposed at the end of the tapered shaft with a smaller section, a screw is inserted into the threaded holes of the positioning member 70 and the tapered shaft, so as to connect the positioning member 70 with the power input shaft 60, the tapered hole and the tapered shaft combine to connect the power input wheel 50 with the power input shaft 60, thereby avoiding the problem of easy shaking of previous key connection.
The speed regulating device further comprises: the spindle 80 and the gear assembly are connected with the impeller through the spindle 80 so as to drive the impeller to rotate.
As shown in fig. 2, the speed regulating device in this embodiment is further provided with a spindle 80, one end of the spindle 80 is inserted in the center of the driven gear 40 and rotates with the driven gear 40, and the other end of the spindle 80 is connected with the impeller, so that an overspeed test is performed.
The speed regulating device further comprises: the damper 20, the damper 20 is disposed in the first oil chamber 11, the damper 20 is connected with the spindle 80, and in particular, the damper 20 is disposed around the spindle 80 to reduce vibration of the spindle 80.
In this embodiment, the device in the first oil cavity is a damper 20, and the damper 20 is disposed around the outer wall of the spindle 80, so as to reduce the shake of the spindle 80 during the rotation process.
Preferably, the damper 20 in the present invention is a rubber damper.
The mounting housing 10 includes a damper chassis 15, the damper 20 is provided on the damper chassis 15, and the speed regulating device further includes a vibration sensor 90 provided on the damper chassis 15 to detect the magnitude of the vibration amplitude of the damper chassis 15.
The installation housing 10 includes a cover plate 16, the power input wheel 50 is disposed at the outer side of the cover plate 16, the speed regulating device further includes a speed sensor, a sensor bracket 100 is provided on the installation housing 10, and the speed sensor is installed on the sensor bracket 100 to measure the rotation speed of the power input wheel 50 by detecting the rotation number of the power input wheel 50.
As shown in fig. 1 and 2, in order to ensure safe use of the speed regulating device in this embodiment, a vibration sensor 90 is disposed on the damper chassis 15 to monitor the abnormality of the transmission assembly by detecting the vibration of the damper chassis 15, and if the vibration is too large, the vibration sensor will give an alarm to control the motor to be turned off and stop the experiment. In addition, the speed regulating device in this embodiment is further provided with a speed sensor, the speed sensor is disposed on the sensor bracket 100, a detected member for detecting the speed sensor is disposed on the power input wheel 50, the power input wheel 50 rotates, the detected member rotates along with the rotation, and the speed sensor determines the rotation speed of the power input wheel 50 by detecting the detected member, so as to measure the input speed or calculate the output speed of the speed regulating device.
The side wall of the first oil cavity 11 is provided with one or more first oil inlets 17, and the first oil inlets 17 are used for supplying oil into the first oil cavity 11.
As shown in fig. 2, a first oil inlet 17 is also provided on the side wall of the first oil chamber 11 in the present embodiment to directly supply oil into the first oil chamber 11.
The tester comprises a driving device and a speed regulating device, wherein the driving device is in driving connection with the impeller through the speed regulating device so as to carry out speed experiments on the impeller, and the speed regulating device is the speed regulating device.
The driving device of the testing machine adopts a motor, the motor is connected with a belt wheel mechanism, the belt wheel mechanism is connected with a gear mechanism, and the gear mechanism is connected with an impeller through a mandrel, so that an overspeed experiment of the impeller is completed.
The invention relates to a speed regulating mechanism, which mainly comprises the following components: the installation casing 10, the second oil inlet 13, the oil outlet 14, the cover plate 16, the driven gear bearing end cover, the exhaust pipe, the ventilation cover, the driving gear bearing end cover, the power input wheel 50, the power input wheel cover, the sensor bracket 100, the shaft seal, the high-speed bearing, the bearing spacer, the driving gear 30, the driven gear 40, the damper 20, the small shaft seal, the damper chassis 15, the damper base, the fixing seat, the mandrel 80, the vibration sensor 90, the vibration sensor bracket and the vibration sensor fixing frame.
The sensor bracket 100 is fixed right above the power input wheel 50, the power input wheel cover is connected with the power input wheel 50, the power input wheel is matched with a conical shaft of the power input shaft 60 through a conical hole, a driving gear is fixed through three high-speed bearings, the axial positioning of the high-speed bearings is fixed through a driving gear bearing end cover, the driving gear is meshed with a driven gear, a certain side gap is ensured, the driven gear 40 is fixed through two high-speed bearings, the axial positioning of the high-speed bearings is fixed through a driven gear bearing end cover, the damper 20 is fixed right below the driven gear, the bottom surface of the damper 20 is connected with a damper base, the damper is fixed on a damper base 15, a fixed seat is connected below the damper base 15, a mandrel 80 is matched with a fixed seat, the damper base, a small shaft seal, the damper and the shaft hole of the driven gear from bottom to top, and the experimental impeller and the tool thereof are connected below the mandrel 80. The vibration sensor 90 is fixed on an upper vibration sensor bracket, which is fixed on a vibration sensor mount provided on the damper chassis 15. In addition, the ventilation hood is in threaded connection with the exhaust pipe, which is fixed on the cover plate 16; the second oil inlet 13 and the oil outlet 14 are connected on the outer wall of the installation cavity through threads.
The use condition of the device is clearly defined to be a working condition of high-speed rotation, the safety and noise isolation of a use place are considered, the precise and safe operation of an assembly process is guaranteed, then the assembly connection relation of parts is paid attention to, and the concentricity of bearing mounting holes of the second oil cavity 12 and the cover plate 16 is firstly guaranteed, so that when the bearing mounting holes of the second oil cavity 12 and the cover plate 16 are machined, two parts are required to be connected by pins, and the bearing mounting holes of the two parts are machined together. When in installation, the damper 20, the small shaft seal and the damping base are firstly installed; then the mounted damping seat, small shaft seal and damping base are fixed on the damper chassis 15; secondly, a high-speed bearing, a driving gear 30 and a driven gear 40 are arranged on the upper part of the second oil cavity 12, the high-speed bearing is arranged in a back-to-back mode, a cover plate 16 is covered, tightness of the high-speed bearing is adjusted through a driving gear bearing end cover, smooth rotation of a gear assembly is ensured, and a dial indicator is used for measuring a power input shaft 60, and the runout of the power input shaft is within 0.02 mm; assembling an upper part and a lower part of the mounting cavity, adjusting and fixing a fixed seat, a vibration sensor 90, a vibration sensor bracket and a vibration sensor fixing frame, enabling a mandrel 80 to pass through a damper 20 and a driven gear 40 from bottom to top, enabling the upper end of the mandrel 80 to be matched with the driven gear 40 in a hexagonal shaft hole, fixing the mandrel 80 by using a double nut, and measuring the mandrel 80 by using a dial indicator, wherein the runout is within 0.03 mm; finally, the driven gear and the driven gear cover are assembled, and the center part of the excircle of the driven gear is measured by adopting a dial indicator, so that the runout is ensured to be within 0.02 mm.
The principle of the invention is that the invention mainly adopts a gear speed increasing device and a damper to realize the speed increasing function and the shock absorbing function. The gear assembly transmission ratio is 1/3.05, the motor frequency is adjusted through the frequency converter, different output experiment rotating speeds are achieved, the damper adopts a rubber damper, the influence on the impeller overspeed testing machine is reduced, and the vibration interference of equipment in the acceleration stage is reduced.
The action process is as follows, the earlier motor drives the belt, the belt drives the power input wheel 50, the power input wheel 50 drives the driving gear 30 through the conical shaft hole in a matching way, the driving gear 30 drives the driven gear 40, the driven gear 40 drives the mandrel 80 through the hexagonal shaft hole in a matching way, and the mandrel 80 drives the experimental impeller and the tool thereof.
From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:
1. as the two-stage speed increasing mechanism is adopted, the rotating speed is increased, and the vibration is reduced, compared with the traditional overspeed testing machine, the rotating speed is increased by 100%, and the vibration is reduced by 30% at the same speed.
2. The oil cavity is divided into an upper layer and a lower layer, oil injection lubrication is adopted, oil immersion of the gear assembly is effectively prevented, the phenomenon of oil stirring caused by gear operation is avoided, and the power of a motor is additionally consumed;
3. the power input shaft and the power input wheel 50 are matched through conical shaft holes, so that axial driving and axial positioning are realized, and dynamic balance is ensured.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (12)
1. A speed regulating device comprising a mounting housing (10) and a transmission, the mounting housing (10) having a mounting cavity for mounting the transmission, the transmission comprising a gear assembly, the mounting cavity comprising:
a first oil chamber (11);
a second oil chamber (12), the gear assembly being disposed within the second oil chamber (12);
the first oil cavity (11) is communicated with the second oil cavity (12), a second oil inlet (13) is formed in the side wall of the second oil cavity (12), oil enters the second oil cavity (12) through the second oil inlet (13) to be sprayed into the gear assembly for lubrication, an oil outlet (14) is further formed in the mounting cavity, and after the oil in the mounting cavity reaches a preset position, the oil outlet (14) discharges oil so that the gear assembly cannot be completely immersed by the oil in the second oil cavity (12) to reduce the resistance of the gear assembly during rotation.
2. The speed regulating device according to claim 1, wherein a plurality of second oil inlets (13) are provided, and a plurality of the second oil inlets (13) are provided at intervals on a side wall of the second oil chamber (12) to inject oil into the second oil chamber (12);
the oil outlet (14) is arranged on the side wall of the first oil cavity (11) and used for discharging oil in the installation cavity, the second oil cavity (12) is arranged above the first oil cavity (11) so that oil enters the second oil cavity (12) from the second oil inlet (13) and flows to the first oil cavity (11) through the second oil cavity (12), and the installation cavity is discharged from the oil outlet (14).
3. The speed governor device of claim 1, wherein the gear assembly comprises:
a driving gear (30), wherein the driving gear (30) is used for being connected with an output shaft of a motor so as to enable the motor to drive the driving gear (30) to rotate;
a driven gear (40), wherein the driving gear (30) is meshed with the driven gear (40) to drive the driven gear (40) to rotate;
the driving gear (30) and the driven gear (40) are both positioned in the second oil cavity (12), the driven gear (40) is in driving connection with the impeller, the reference diameter of the driving gear (30) is larger than that of the driven gear (40), and the motor is in driving connection with the impeller through the gear assembly so as to achieve speed-increasing driving of the impeller.
4. The speed governor device of claim 3, wherein the transmission further comprises:
a power input wheel (50), wherein the motor is connected with the power input wheel (50) to drive the power input wheel (50) to rotate;
the power input shaft (60), the power input shaft (60) includes first connecting portion (61) and second connecting portion (62), power input wheel (50) with first connecting portion (61) are connected, driving gear (30) with second connecting portion (62) are connected, the motor passes through power input wheel (50) drive power input shaft (60) rotate, so as to drive power input shaft (60) drive driving gear (30) rotate.
5. The speed regulating device according to claim 4, wherein the first connecting portion (61) is a conical shaft, the power input wheel (50) is provided with a conical hole matched with the conical shaft, the conical shaft is inserted into the conical hole of the power input wheel (50), and the diameter of one end of the conical shaft, which is close to the second connecting portion (62), is larger than the diameter of one end of the conical shaft, which is far away from the second connecting portion (62).
6. The speed regulating device according to claim 5, characterized in that an end of the first connecting portion (61) remote from the second connecting portion (62) is provided with a positioning member (70), the positioning member (70) being connected with the power input shaft (60) to position the power input wheel (50) on the power input shaft (60).
7. The speed governor device of claim 1, further comprising:
the spindle (80) is connected with the impeller through the spindle (80) so as to drive the impeller to rotate;
and the damper (20) is arranged in the first oil cavity (11), and the damper (20) is connected with the mandrel (80).
8. The speed regulating device according to claim 7, wherein the damper (20) is arranged around the spindle (80) to reduce vibrations of the spindle (80).
9. The speed governor device of claim 8, wherein the mounting housing (10) includes a damper chassis (15), the damper (20) being disposed on the damper chassis (15), the speed governor device further including a vibration sensor (90), the vibration sensor (90) being disposed on the damper chassis (15) to detect a magnitude of vibration of the damper chassis (15).
10. The speed regulating device according to claim 4, characterized in that the mounting housing (10) comprises a cover plate (16), the power input wheel (50) is arranged outside the cover plate (16), the speed regulating device further comprises a speed sensor, a sensor bracket (100) is arranged on the mounting housing (10), and the speed sensor is arranged on the sensor bracket (100) to measure the rotating speed of the power input wheel (50) by detecting the rotating number of the power input wheel (50).
11. The speed regulating device according to claim 1, characterized in that a first oil inlet (17) is arranged on the side wall of the first oil cavity (11), one or more first oil inlets (17) are arranged, and the first oil inlet (17) is used for supplying oil into the first oil cavity (11).
12. A testing machine comprising a drive device and a speed regulating device, wherein the drive device is in drive connection with an impeller through the speed regulating device so as to perform a speed test on the impeller, and the speed regulating device is the speed regulating device according to any one of claims 1 to 11.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811240078.5A CN109114199B (en) | 2018-10-23 | 2018-10-23 | Speed adjusting device and test machine with same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811240078.5A CN109114199B (en) | 2018-10-23 | 2018-10-23 | Speed adjusting device and test machine with same |
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| CN109114199A CN109114199A (en) | 2019-01-01 |
| CN109114199B true CN109114199B (en) | 2024-04-05 |
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| CN201811240078.5A Active CN109114199B (en) | 2018-10-23 | 2018-10-23 | Speed adjusting device and test machine with same |
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| CN104728416A (en) * | 2015-03-27 | 2015-06-24 | 合肥工业大学 | Dual clutch transmission with improved oil pump arrangement structure |
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| CN107489756A (en) * | 2016-12-23 | 2017-12-19 | 宝沃汽车（中国）有限公司 | A kind of gearbox and the vehicle with the gearbox |
| CN208982634U (en) * | 2018-10-23 | 2019-06-14 | 珠海格力智能装备有限公司 | Speed adjusting device and testing machine with same |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3450800B1 (en) * | 2010-09-28 | 2020-03-04 | Kubota Corporation | Power transmission device of tractor |
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2018
- 2018-10-23 CN CN201811240078.5A patent/CN109114199B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202992096U (en) * | 2012-12-21 | 2013-06-12 | 汪永海 | Soft start gear box |
| CN203780321U (en) * | 2014-03-21 | 2014-08-20 | 重庆动霸科技有限公司 | Double output variable speed device for motor tricycle |
| CN104728416A (en) * | 2015-03-27 | 2015-06-24 | 合肥工业大学 | Dual clutch transmission with improved oil pump arrangement structure |
| CN205806424U (en) * | 2016-01-06 | 2016-12-14 | 天地上海采掘装备科技有限公司 | Adopt the lubricating system of aluminum machine exposed gear |
| CN107489756A (en) * | 2016-12-23 | 2017-12-19 | 宝沃汽车（中国）有限公司 | A kind of gearbox and the vehicle with the gearbox |
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| CN109114199A (en) | 2019-01-01 |
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