CN109139794B - Damper and overspeed testing machine with same - Google Patents
Damper and overspeed testing machine with same Download PDFInfo
- Publication number
- CN109139794B CN109139794B CN201811239425.2A CN201811239425A CN109139794B CN 109139794 B CN109139794 B CN 109139794B CN 201811239425 A CN201811239425 A CN 201811239425A CN 109139794 B CN109139794 B CN 109139794B
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- oil
- damper
- vibration
- vibrator
- damping
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- 238000012360 testing method Methods 0.000 title claims abstract description 27
- 238000013016 damping Methods 0.000 claims abstract description 117
- 125000006850 spacer group Chemical group 0.000 claims abstract description 48
- 238000001514 detection method Methods 0.000 claims abstract description 16
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 239000003921 oil Substances 0.000 description 126
- 238000007789 sealing Methods 0.000 description 13
- 238000009434 installation Methods 0.000 description 11
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000010687 lubricating oil Substances 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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
- F16F15/12—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon
- F16F15/121—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon using springs as elastic members, e.g. metallic springs
- F16F15/124—Elastomeric springs
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- 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)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- General Physics & Mathematics (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention provides a damper and an overspeed testing machine with the same, wherein the damper comprises: the shell, the core bar wears to set up in the shell; the damping spacer bush is arranged in the shell so as to reduce the vibration of the core rod; the damping seat is arranged in the shell and is connected with the damping spacer bush; and the detection device is arranged on the shell and is used for detecting the vibration of the core rod by detecting the vibration of the damping seat. The damper solves the problem that the damper in the prior art cannot ensure the safety of the ultra-high-speed testing machine.
Description
Technical Field
The invention relates to the field of mechanical vibration reduction, in particular to a damper and an overspeed testing machine with the same.
Background
At present, most of the traditional impeller overspeed testing machines are directly driven by a motor or driven by a belt, the rotating speed is generally only 10000r/min to 25000r/min, the vibration of the whole machine is not obvious at the moment, when the running rotating speed of the machine exceeds 40000r/min, the test has strict requirements on the running vibration of the machine, forced shutdown is required when the vibration is too high, otherwise, the machine is easy to damage, even safety accidents are caused,
the vibration of the equipment is generally slowed down and absorbed by adopting devices such as a damper and the like in the existing equipment, but the vibration absorption effect of the damper of the existing equipment is not good, the rotating speed and the consumed power of a test piece are influenced, the vibration caused by the rotation at a lower speed can be only adapted, when the rotating speed of the test piece is larger, the vibration reduction and consumption reduction requirements of the equipment cannot be met by the existing damper, and the vibration condition cannot be monitored in real time by the existing equipment, so that the vibration is quite unsafe.
Disclosure of Invention
The invention mainly aims to provide a damper and an overspeed testing machine with the same, so as to solve the problem that the damper in the prior art cannot guarantee the safety of the overspeed testing machine.
In order to achieve the above object, according to one aspect of the present invention, there is provided a damper comprising: the shell, the core bar wears to set up in the shell; the damping spacer bush is arranged in the shell so as to reduce the vibration of the core rod; the damping seat is arranged in the shell and is connected with the damping spacer bush; and the detection device is arranged on the shell and is used for detecting the vibration of the core rod by detecting the vibration of the damping seat.
Further, an oil inlet port and an oil outlet port are arranged on the shell, and a first oil way is arranged on the damping spacer sleeve so that oil flows into the shell from the oil inlet port and flows through the first oil way to be discharged from the oil outlet port.
Further, the damping spacer includes: the core rod hole is used for penetrating the core rod; the first through holes are arranged around the core rod hole, so that oil flows from one end of the first through holes to the other end of the first through holes.
Further, the damper further includes: the first vibrator is arranged in the shell and is used for being sleeved outside the core rod.
Further, a second oil way is arranged on the first vibrator, so that oil flows into the shell from the oil inlet interface and flows into the first oil way after passing through the second oil way.
Further, the damper further includes: the second vibrator is sleeved on the outer side of the first vibrator so as to damp the core rod.
Further, a third oil way is arranged on the second vibrator, so that oil enters the shell from the oil inlet port and flows into the second oil way through the third oil way.
Further, a fourth oil way communicated with the second oil way and the third oil way is arranged on the damping seat so as to guide oil liquid into the second oil way from the third oil way.
Further, the damper further includes: and the first vibration reduction part is arranged between the first vibrator and the second vibrator so as to reduce vibration caused by the core rod.
Further, an oil inlet port is arranged on the shell, and the first damping part is a damping oil film, so that oil enters the shell from the oil inlet port to supply oil to the first damping part.
Further, the damper further includes: and the second vibration reduction part is arranged between the second vibrator and the shell so as to reduce vibration caused by the core rod.
Further, the second vibration reduction portion is a rubber member.
Further, the detection device comprises a vibration sensor, and the vibration sensor is connected with the damping seat to detect vibration of the damping seat.
Further, the housing includes a chassis, and the damper further includes: and the fixing component is arranged on the chassis to fix the vibration sensor.
Further, the damper further includes: the bearing assembly is sleeved on the core rod, and the fixing assembly is connected with the core rod through the bearing assembly.
According to another aspect of the present invention, there is provided an overspeed testing machine including an impeller, a core bar connected to the impeller to drive the impeller to rotate, and a damper sleeved on the core bar to reduce vibration of the core bar, the damper being the damper described above.
The damper applying the technical scheme of the invention can be applied to an overspeed testing machine for damping the core bar, and comprises a shell, a damping spacer, a damping seat and a detection device, wherein the damping spacer is wrapped on the outer side of the core bar to reduce the vibration of the core bar, the damping spacer is arranged on the damping seat, the damping seat is used for installing the damping spacer and supporting the core bar to prevent the core bar from shaking, the detection device is also arranged on the shell to monitor the vibration state of the whole damping seat or the overspeed testing machine system by detecting the vibration size and frequency of the damping seat, and early warning information is timely made to ensure the safety of the damper and the overspeed testing machine.
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 construction of an embodiment of a damping mount according to the present invention;
FIG. 2 shows a top view of an embodiment of the damping mount of the present invention;
FIG. 3 shows a cross-sectional view of the damping mount embodiment A-A of FIG. 2;
FIG. 4 shows a schematic view from one perspective of an embodiment of a damping spacer according to the present invention;
FIG. 5 illustrates a cross-sectional view at B-B of the damping cup embodiment of FIG. 4 of the present invention;
fig. 6 shows a schematic diagram of a first vibrator embodiment according to the present invention;
fig. 7 shows a cross-sectional view of a first vibrator embodiment of the present invention;
fig. 8 shows a schematic diagram of a second vibrator embodiment according to the present invention;
fig. 9 shows a cross-sectional view of a second vibrator embodiment of the present invention;
FIG. 10 shows a schematic view of an embodiment of a damping mount according to the present invention;
FIG. 11 shows a cross-sectional view of an embodiment of the damping mount of the present invention.
FIG. 12 shows an overall schematic of an embodiment of the damper with detection device of the present invention;
FIG. 13 shows a schematic view of an embodiment of a securing assembly of the present invention;
fig. 14 shows a schematic view of a first positioning member embodiment of the present invention.
Wherein the above figures include the following reference numerals:
20. a damper; 21. damping spacer bush; 211. a first oil passage; 212. a core rod hole; 213. a first through hole; 22. a first vibrator; 221. a second oil path; 222. a first seal ring; 223. a second seal ring; 224. a first mounting groove; 225. a second mounting groove; 226. a second through hole; 23. a second vibrator; 231. a third oil passage; 232. a third through hole; 233. an oil port; 234. a first mounting step; 235. a second mounting step; 24. a housing; 241. an oil inlet port; 243. a chassis; 25. a damping seat; 251. a fourth oil passage; 26. a first vibration damping portion; 27. a second vibration damping portion; 272. a first rubber ring assembly; 273. a second rubber ring assembly; 41. a vibration sensor; 42. a first positioning member; 421. positioning holes; 43. a locking member; 431. a first locking plate; 432. a second locking plate; 433. a locking screw; 44. a second positioning member; 45. a bearing assembly; 100. and (5) a core bar.
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 damper, as shown in fig. 1 to 14, comprising: the shell 24, the core bar 100 wears to locate in shell 24; damping spacer 21, damping spacer 21 is set up in shell 24, in order to reduce the vibration of the core bar 100; the damping seat 25 is arranged in the shell 24 and is connected with the damping spacer 21; and a detecting device provided on the housing 24 and detecting vibration of the core bar 100 by detecting vibration of the damping mount 25.
The damper provided by the invention can be applied to an overspeed testing machine for damping a core bar 100, and comprises a shell 24, a damping spacer 21, a damping seat 25 and a detection device, wherein the damping spacer 21 is wrapped on the outer side of the core bar 100 to reduce vibration of the core bar 100, the damping spacer 21 is arranged on the damping seat 25, the damping seat 25 is used for installing the damping spacer 21 and supporting the core bar 100 to prevent the core bar 100 from shaking, and the detection device is arranged on the shell 24 to monitor the vibration state of the whole damping seat or the overspeed testing machine system by detecting the vibration size and frequency of the damping seat 25 and timely make early warning information to ensure the safety of the damper and the overspeed testing machine.
The damper in the present embodiment further includes: the damping spacer bush 21 is used for being sleeved on the outer side of the core rod so as to reduce the vibration of the core rod; the first vibrator 22 is sleeved outside the damping spacer 21; the shell 24, the first vibrator 22 and the damping spacer 21 are arranged in the shell 24 to reduce the vibration of the core rod; the casing 24 is provided with an oil inlet 241 and an oil outlet, and the damping spacer 21 is provided with a first oil path 211, so that oil flows into the casing 24 from the oil inlet 241 and is discharged from the oil outlet after flowing through the first oil path 211.
The damper 20 in this embodiment includes a damping spacer 21, a first vibrator 22 and a housing 24, where the damping spacer 21 is cylindrical and is wrapped on a core rod to reduce vibration or shake of the core rod in the rotation process, the first vibrator 22 is also disposed on the outer side of the damping spacer 21, and the first vibrator 22 is cylindrical and wrapped on the outer side of the damping spacer 21 to further reduce vibration of the damping spacer 21, the damper 20 is provided with a housing 24, the damping spacer 21 and the first vibrator 22 are both disposed in the housing 24, the housing 24 is provided with an oil inlet 241, oil is selected from lubricating oil or damping oil, and the oil is introduced into the housing 24 from the oil inlet 241 and flows into the damping spacer 21 through a first oil path 211, and finally flows out from an oil outlet on the housing 24.
The damping spacer 21 includes: a core rod hole 212, wherein the core rod hole 212 is used for penetrating the core rod; the plurality of first through holes 213 are disposed around the core rod hole 212 such that oil flows from one end of the first through holes 213 to the other end of the first through holes 213.
As shown in fig. 4 and 5, the center of the damping spacer 21 in this embodiment is provided with a core rod hole 212, the core rod hole 212 is a through hole, the size of which is matched with the size of the core rod, so that the core rod is inserted into the core rod hole 212, in addition, an elastic member, such as rubber, can be arranged on the inner wall of the core rod hole 212 as required to improve the vibration damping effect, and a circle of first through holes 213 are further arranged on the damping spacer 21 and uniformly distributed on the periphery of the core rod hole 212, so that oil can pass through the damping spacer 21 through the first through holes 213.
The first vibrator 22 is provided with a second oil path 221, so that oil flows into the casing 24 from the oil inlet 241 and flows into the first oil path 211 after passing through the second oil path 221.
As shown in fig. 6 and 7, in the present embodiment, a second oil path 221 is further provided on the first vibrator 22, so that the oil flows into the first oil path 211 through the second oil path 221 after flowing into the casing 24 from the oil inlet port 241, and finally flows out.
The second oil passage 221 includes: the plurality of second through holes 226 are arranged around the axle center of the first vibrator 22, and the oil outlet ends of the second through holes 226 are opposite to the oil inlet ends of the first oil way 211, so that the oil flows into the first oil way 211 from the oil inlet ends of the first oil way 211 after flowing through the second through holes 226.
As shown in fig. 6, the first vibrator 22 is provided with a plurality of second through holes 226, and the plurality of second through holes 226 form a second oil passage 221, and the second through holes 226 are holes extending from the upper end surface of the first vibrator 22 to the lower end surface.
The damper further includes: the second vibrator 23 is sleeved outside the first vibrator 22 to damp the core bar.
As shown in fig. 3, the damper 20 in the present embodiment further includes a second vibrator 23, where the second vibrator 23 is also cylindrical and is sleeved on the outer side of the first vibrator 22 to perform one-step damping of the vibration caused by the core rod.
The second vibrator 23 is provided with a third oil path 231 so that oil enters the casing 24 from the oil inlet 241 and flows into the second oil path 221 through the third oil path 231. The third oil passage 231 includes: the plurality of third through holes 232 are arranged around the axis of the second vibrator 23, and the oil outlet end of the third through holes 232 is opposite to the oil inlet end of the second oil path 221, so that the oil flows into the second oil path 221 from the oil inlet end of the second oil path 221 after flowing through the third through holes 232.
As shown in fig. 8 and 9, the second vibrator 23 in the present embodiment is provided with a third oil passage 231, and the third oil passage 231 is composed of a plurality of third through holes 232.
The damper further includes: the damping seat 25 is provided with a fourth oil path 251 communicating with the second oil path 221 and the third oil path 231 to guide the oil from the third oil path 231 into the second oil path 221.
As shown in fig. 10 and 11, the damper 20 in the present embodiment further includes a damper seat 25 provided at a bottom end of the housing 24, a plurality of annular grooves provided on the damper for mounting the first vibrator 22 and the second vibrator 23, and a fourth oil passage 251 provided on the damper seat 25, the fourth oil passage 251 including a plurality of through holes for communicating the third oil passage 231 and the second oil passage 221 so that the first oil passage, the second oil passage and the third oil passage communicate.
The oil inlet ports 241 are provided in plurality, and the plurality of oil inlet ports 241 are provided at intervals on the housing 24 to simultaneously supply oil into the housing 24.
As shown in fig. 3, in this embodiment, a plurality of oil inlet ports 241 are provided on the housing 24 and are provided on the housing 24 at intervals, so that it is possible to satisfy that the plurality of oil inlet ports 241 simultaneously feed oil into the housing 24.
The damper in the present embodiment includes: a housing 24 for passing the core rod therethrough; the first vibrator 22 is arranged in the shell 24, and the first vibrator 22 is sleeved outside the core rod; the second vibrator 23, the second vibrator 23 is set up in the shell 24, the second vibrator 23 is used for covering and setting up in the outside of the first vibrator 22; the first vibration reducing portion 26, the first vibration reducing portion 26 is provided between the first vibrator 22 and the second vibrator 23 to reduce vibrations caused by the core bar.
The damper 20 in this embodiment can be applied to an overspeed testing machine for reducing vibration generated by a core bar, the damper 20 includes a housing 24, a first vibrator 22 and a second vibrator 23, the first vibrator 22 is in a cylindrical structure and is sleeved on the outer side of the core bar to reduce vibration caused by rotation of the core bar, the second vibrator 23 is arranged on the outer side of the first vibrator 22, a first vibration reduction portion 26 is arranged between the second vibrator 23 and the first vibrator 22 to reduce vibration transmission between the first vibrator 22 and the second vibrator 23, and the damper 20 of the present invention satisfies vibration reduction requirements of the overspeed testing machine by arranging the first vibrator 22, the second vibrator 23 and the first vibration reduction portion 26 to reduce vibration of the core bar layer by layer.
The casing 24 is provided with an oil inlet port 241, and the first damping portion 26 is a damping oil film, so that oil enters the casing 24 from the oil inlet port 241 to supply oil to the first damping portion 26.
As shown in fig. 3, in this embodiment, an oil inlet 241 is disposed on the housing 24 of the damper, and the first vibration reduction portion 26 is specifically a vibration reduction oil film, where the oil film is an oil film with a certain pressure, and the specific pressure is adjustable according to the requirement of the rotation speed.
The second vibrator 23 is provided with an oil through port 233, so that oil enters the shell 24 from the oil inlet port 241 and flows into the space between the first vibrator 22 and the second vibrator 23 through the oil through port 233 to form a vibration damping oil film.
As shown in fig. 3, the second vibrator 23 in the embodiment is further provided with an oil through port 233, and oil enters the casing from an oil inlet port 241 on the casing 24 and enters between the second vibrator 23 and the first vibrator 22 through the oil through port 233 to form an oil film with a certain pressure so as to achieve the purpose of reducing vibration.
The damper further includes: and a seal assembly disposed between the first vibrator 22 and the second vibrator 23 to form a sealed space for sealing oil. The seal assembly includes: the first sealing ring 222, the first sealing ring 222 is arranged at one end of the first vibrator 22; a second seal ring 223, the second seal ring 223 being provided at the other end of the first vibrator 22; the first seal ring 222, the first vibrator 22, the second seal ring 223, and the second vibrator 23 are connected to form a sealed space. The first vibrator 22 is provided with a first mounting groove 224 and a second mounting groove 225, the first seal ring 222 is provided on the first mounting groove 224, and the second seal ring 223 is provided on the second mounting groove 225.
As shown in fig. 3 to 5, in this embodiment, in order to form an oil film between the first vibrator 22 and the second vibrator 23, a sealing assembly is further disposed between the first vibrator 22 and the second vibrator 23, the sealing assembly specifically includes a first sealing ring 222 and a second sealing ring 223, a space for sealing the oil film is enclosed between the first sealing ring 222, the second sealing ring 223, the first vibrator 22 and the second vibrator 23, two annular mounting grooves are respectively disposed at two ends of the first vibrator 22 for mounting the sealing assembly, a first mounting groove 224 and a second mounting groove 225, the first sealing ring 222 is disposed in the first mounting groove 224, and the second sealing ring 223 is disposed in the second mounting groove 225.
The damper further includes: and a second vibration reducing portion 27, the second vibration reducing portion 27 being provided between the second vibrator 23 and the case 24 to reduce vibrations caused by the core bar. The second vibration damping portion 27 is a rubber member.
As shown in fig. 3, the damper 20 in this embodiment is further provided with a second vibration damping portion 27, and the second vibration damping portion 27 is physically damped, and is made of elastic rubber.
The second vibrator 23 includes a first mounting portion and a second mounting portion, the rubber member includes a plurality of rubber rings including: a first rubber ring assembly 272, the first rubber ring assembly 272 being disposed on the first mounting portion; a second rubber ring member 273, the second rubber ring member 273 being provided on the second mounting portion; wherein the first rubber ring member 272 and the second rubber ring member 273 are provided on the second vibrator 23. The second vibrator 23 is provided with a first mounting step 234 and a second mounting step 235, the first mounting step 234 and the second mounting step 235 are arranged on the outer wall of the second vibrator 23 at intervals, a first mounting part is arranged between the first mounting step 234 and the second mounting step 235, and a second mounting part is arranged on one side, far away from the first mounting step 234, of the second mounting step 235.
In order to facilitate the installation of the second vibration reduction portion 27 in this embodiment, a first installation portion and a second installation portion are disposed on the second vibrator 23, specifically, one end of the outer wall of the second vibrator 23 is provided with an annular first installation step 234, an annular second installation step 235 is disposed in the middle of the outer wall of the second vibrator 23, a first rubber ring assembly 272 is disposed on the first installation portion surrounded by the first installation step 234 and the second installation step 235, and a second rubber ring assembly 273 is disposed on the second installation portion on one side of the second installation step 235 away from the first installation step 234.
The damper in this embodiment can be used on an overspeed testing machine to reduce the vibration of the core bar 100, and includes a housing 24, a damping component for reducing the vibration, and a detection device for detecting the vibration of the housing, wherein the housing 24 is disposed on the core bar 100, the damping component is disposed in the housing 24 and wrapped around the core bar 100 to reduce the vibration of the core bar 100 when the core bar 100 rotates, and the detection device is disposed on the housing 24 to determine the vibration state of the core bar 100 or the whole system by detecting the vibration of the housing 24, and can alarm or cut off the power supply in time when detecting that the vibration of the housing 24 exceeds a certain range, so as to ensure the safety of the overspeed testing machine.
The damping assembly comprises a damping mount 25, and the detection means comprises a vibration sensor 41, the vibration sensor 41 being connected to the damping mount 25 to detect vibrations of the damping mount 25.
As shown in fig. 10, the damping assembly in this embodiment includes a damping seat 25, the damping seat 25 is disposed in the housing 24, the damping assembly further includes a damping spacer and a vibration damper, the damping spacer is wrapped on the core rod 100, the vibration damper is wrapped on the outer side of the damping spacer, the damping seat 25 is disposed on the damping spacer and the bottom of the vibration damper, the damping seat 25 and the damping spacer are formed together to reduce vibration generated when the core rod 100 rotates, and the detection head of the vibration sensor 41 is disposed toward the damping seat 25 to detect the magnitude or frequency of vibration generated by the damping seat 25.
The housing 24 includes a chassis 243, and the damper further includes: and a fixing assembly provided on the bottom chassis 243 to fix the vibration sensor 41.
As shown in fig. 12, the housing 24 in the present embodiment further includes a chassis 243, and a fixing member for fixing the vibration sensor 41 is provided on the chassis 243 to fix the vibration sensor 41 to the chassis 243.
The fixing assembly comprises a first locating piece 42, the first locating piece 42 is fixed on a chassis 243, a locating hole 421 is formed in the first locating piece 42, and the vibration sensor 41 is arranged in the locating hole 421 in a penetrating mode to locate.
As shown in fig. 12 and 14, the fixing assembly includes a first positioning member 42, a plurality of positioning holes 421 may be formed in the first positioning member 42, and a plurality of vibration sensors 41 may be simultaneously inserted into the first positioning member 42 to detect the damping seat 25, and a plurality of connection plates may be further formed on the first positioning member 42 to be fixed on the chassis 243.
The securing assembly further includes: a locking member 43, the locking member 43 being provided on the chassis 243 for locking the vibration sensor 41 to the chassis 243. The locking member 43 includes: a first locking plate 431 and a second locking plate 432, the first locking plate 431 being rotatably connected to the second locking plate 432, the first locking plate 431 having a locking position and an unlocking position; wherein, when the first locking plate 431 rotates to the locking position, the vibration sensor 41 is locked, and when the first locking plate 431 rotates to the opening position, the vibration sensor 41 is taken out. The locker 43 further includes a locking screw 433, and when the first locking plate 431 is rotated to the locking position, the locking screw 433 fixes the first locking plate 431 to the second locking plate 432 to position the vibration sensor 41.
As shown in fig. 12 and 13, the fixing assembly in this embodiment further includes a locking member 43, the locking member 43 is used for locking and fixing the vibration sensor 41 to prevent vibration, the locking member 43 includes a first locking plate 431 and a second locking plate 432, one end of the first locking plate 431 and one end of the second locking plate 432 are hinged, the other end of the first locking plate 431 is detachably connected through a locking screw 433, when the vibration sensor 41 is mounted, the first locking plate 431 is rotated to a locking position, the first locking plate 431 is locked on the second locking plate 432 through the locking screw 433, when the vibration sensor 41 needs to be dismounted, the locking screw 433 is opened, the first locking plate 431 is rotated to an opening position, and the vibration sensor 41 is taken out.
The securing assembly further includes a second positioning member 44, the second positioning member 44 being secured to the chassis 243 for securing the locking member 43.
As shown in fig. 13, the fixing assembly in this embodiment is further provided with a second positioning member 44, the second positioning member 44 is fixed on the chassis 243, and the second locking plate 432 is connected to the second positioning member 44 and is fixed on the chassis 243 by the second positioning member 44.
The damper further includes: the bearing assembly 45 is sleeved on the core rod 100, and the fixing assembly is connected with the core rod 100 through the bearing assembly 45.
As shown in fig. 12, the damper in the present embodiment further includes a bearing assembly 45, and the bearing assembly 45 is disposed between the inner side of the first positioning member 42 and the outer side of the core rod 100 to support the core rod 100, prevent the core rod 100 from swinging, and achieve connection between the fixing assembly and the core rod 100.
The invention also provides an overspeed testing machine, which comprises an impeller, a core rod 100 and a damper 20, wherein the core rod 100 is connected with the impeller to drive the impeller to rotate, the damper 20 is sleeved on the core rod 100 to reduce the vibration of the core rod 100, and the damper 20 is the damper.
From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:
the damper provided by the invention can be applied to an overspeed testing machine for damping a core bar 100, and comprises a shell 24, a damping spacer 21, a damping seat 25 and a detection device, wherein the damping spacer 21 is wrapped on the outer side of the core bar 100 to reduce vibration of the core bar 100, the damping spacer 21 is arranged on the damping seat 25, the damping seat 25 is used for installing the damping spacer 21 and supporting the core bar 100 to prevent the core bar 100 from shaking, and the detection device is arranged on the shell 24 to monitor the vibration state of the whole damping seat or the overspeed testing machine system by detecting the vibration size and frequency of the damping seat 25 and timely make early warning information to ensure the safety of the damper and the overspeed testing machine.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
In the description of the present invention, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present invention; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present invention.
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 (11)
1. A damper, comprising:
a shell (24), wherein the core bar (100) is arranged in the shell (24) in a penetrating way;
a damping spacer (21), the damping spacer (21) being disposed within the housing (24) to reduce vibration of the core rod (100);
the damping seat (25) is arranged in the shell (24) and is connected with the damping spacer bush (21);
the detection device is arranged on the shell (24) and detects the vibration of the core bar (100) by detecting the vibration of the damping seat (25);
the first vibrator (22) is arranged in the shell (24), and the first vibrator (22) is used for being sleeved outside the core rod (100);
the second vibrator (23) is sleeved outside the first vibrator (22) so as to damp the core bar (100);
a first vibration reduction portion (26), the first vibration reduction portion (26) being disposed between the first vibrator (22) and the second vibrator (23) to reduce vibration caused by the core bar (100), the first vibration reduction portion (26) being a vibration reduction oil film;
and a second vibration reduction portion (27), wherein the second vibration reduction portion (27) is arranged between the second vibrator (23) and the housing (24) so as to reduce vibration caused by the core bar (100), and the second vibration reduction portion (27) is a rubber component.
2. The damper according to claim 1, wherein the housing (24) is provided with an oil inlet port (241) and an oil outlet port, and the damping spacer (21) is provided with a first oil path (211) so that oil flows into the housing (24) from the oil inlet port (241) and flows through the first oil path (211) and is discharged from the oil outlet port.
3. A damper according to claim 2, wherein the damping spacer (21) comprises:
a core rod hole (212), wherein the core rod hole (212) is used for penetrating the core rod (100);
the plurality of first through holes (213) are arranged around the core rod hole (212) so that oil flows from one end of the first through holes (213) to the other end of the first through holes (213).
4. The damper according to claim 2, wherein a second oil passage (221) is provided in the first vibrator (22) so that oil flows into the housing (24) from the oil inlet port (241) and flows into the first oil passage (211) after passing through the second oil passage (221).
5. The damper according to claim 4, wherein a third oil passage (231) is provided in the second vibrator (23) so that oil enters the housing (24) from the oil inlet port (241) and flows into the second oil passage (221) through the third oil passage (231).
6. The damper according to claim 5, characterized in that a fourth oil passage (251) communicating with the second oil passage (221) and the third oil passage (231) is provided on the damper seat (25) to guide the oil from the third oil passage (231) into the second oil passage (221).
7. The damper according to claim 1, wherein an oil inlet port (241) is provided on the housing (24) so that oil enters the housing (24) from the oil inlet port (241) to supply oil to the first vibration reduction portion (26).
8. A damper according to claim 1, characterized in that the detection means comprise a vibration sensor (41), the vibration sensor (41) being connected with the damping mount (25) for detecting vibrations of the damping mount (25).
9. The damper of claim 8, wherein the housing (24) includes a chassis (243), the damper further comprising:
and a fixing assembly provided on the chassis (243) to fix the vibration sensor (41).
10. The damper of claim 9, further comprising:
the bearing assembly (45) is sleeved on the core rod (100), and the fixing assembly is connected with the core rod (100) through the bearing assembly (45).
11. An overspeed testing machine comprising an impeller, a core rod (100) and a damper (20), wherein the core rod (100) is connected with the impeller to drive the impeller to rotate, and the damper (20) is sleeved on the core rod (100) to reduce vibration of the core rod (100), and the damper (20) is the damper according to any one of claims 1 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811239425.2A CN109139794B (en) | 2018-10-23 | 2018-10-23 | Damper and overspeed testing machine with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811239425.2A CN109139794B (en) | 2018-10-23 | 2018-10-23 | Damper and overspeed testing machine with same |
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| Publication Number | Publication Date |
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| CN109139794A CN109139794A (en) | 2019-01-04 |
| CN109139794B true CN109139794B (en) | 2024-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811239425.2A Active CN109139794B (en) | 2018-10-23 | 2018-10-23 | Damper and overspeed testing machine with same |
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| CN102927196A (en) * | 2012-11-05 | 2013-02-13 | 中国船舶重工集团公司第七〇五研究所 | Extrusion oil film damper running synchronously with propulsion shaft system |
| CN103604587A (en) * | 2013-08-27 | 2014-02-26 | 杭州海罗马科技有限公司 | High-speed rotation testing machine and method for testing high-speed rotation strength performance of rotor |
| CN105452689A (en) * | 2013-08-20 | 2016-03-30 | 申克罗泰克有限责任公司 | Aerostatic bearing for a rotor, in particular in a balancing machine |
| CN108487949A (en) * | 2018-06-28 | 2018-09-04 | 西安交通大学 | A kind of aero-engine adaptive damping squeeze film damper |
| CN208982594U (en) * | 2018-10-23 | 2019-06-14 | 珠海格力智能装备有限公司 | Damper and overspeed testing machine with same |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9046001B2 (en) * | 2011-08-29 | 2015-06-02 | Honeywell International Inc. | Annular bearing support dampers, gas turbine engines including the same, and methods for the manufacture thereof |
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2018
- 2018-10-23 CN CN201811239425.2A patent/CN109139794B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102927196A (en) * | 2012-11-05 | 2013-02-13 | 中国船舶重工集团公司第七〇五研究所 | Extrusion oil film damper running synchronously with propulsion shaft system |
| CN105452689A (en) * | 2013-08-20 | 2016-03-30 | 申克罗泰克有限责任公司 | Aerostatic bearing for a rotor, in particular in a balancing machine |
| CN103604587A (en) * | 2013-08-27 | 2014-02-26 | 杭州海罗马科技有限公司 | High-speed rotation testing machine and method for testing high-speed rotation strength performance of rotor |
| CN108487949A (en) * | 2018-06-28 | 2018-09-04 | 西安交通大学 | A kind of aero-engine adaptive damping squeeze film damper |
| CN208982594U (en) * | 2018-10-23 | 2019-06-14 | 珠海格力智能装备有限公司 | Damper and overspeed testing machine with same |
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| CN109139794A (en) | 2019-01-04 |
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