CN106763610B - Rotational speed fluctuation generator - Google Patents
Rotational speed fluctuation generator Download PDFInfo
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- CN106763610B CN106763610B CN201611219064.6A CN201611219064A CN106763610B CN 106763610 B CN106763610 B CN 106763610B CN 201611219064 A CN201611219064 A CN 201611219064A CN 106763610 B CN106763610 B CN 106763610B
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- spline
- bevel
- housing
- sleeve
- rotational speed
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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
- F16H35/00—Gearings or mechanisms with other special functional features
- F16H35/18—Turning devices for rotatable members, e.g. shafts
-
- 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
- F16H49/00—Other gearings
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention discloses a rotational speed fluctuation generator, which comprises a bevel spline sleeve and a rotatable control sleeve sleeved on the periphery of the bevel spline sleeve, wherein a first bevel spline shaft and a second bevel spline shaft with opposite rotation directions are symmetrically inserted in the axial direction of the bevel spline sleeve, the first bevel spline shaft and the second bevel spline shaft are respectively connected with the bevel spline sleeve through a first internal bevel spline and a second internal bevel spline which have the same rotation direction as the first bevel spline and the second internal bevel spline, the lengths of the first bevel spline shaft and the second bevel spline shaft are smaller than the distance between the first internal bevel spline and the second internal bevel spline, and the control sleeve is connected with a driving device for controlling the self and the bevel spline sleeve to reciprocate along the axial direction of the bevel spline sleeve. The driving device drives the control sleeve to drive the inclined spline sleeve to move along the axis of the inclined spline sleeve, the state of rotation superposition speed fluctuation is realized by changing the travel, frequency and the like of the movement of the control sleeve, the movement process of the actual prime motor output speed fluctuation is simulated, and then a simulation test is carried out. The rotating speed fluctuation generator is simple in structure, convenient to adjust and convenient to apply.
Description
Technical Field
The invention relates to the technical field of engine research, in particular to a rotation speed fluctuation generator.
Background
Most of the mechanical devices commonly used in the market include an engine for providing power, and piston engines are widely used.
As is well known, the piston engine inevitably generates harmful mechanical vibration and accompanies certain noise in the use process, and with the continuous development of science and technology and the improvement of people's requirements, the conditions that the output rotation speed of the prime motor such as the piston engine is uneven, and the vibration of the driven motor and the increase of noise are more and more unacceptable. If the piston engine finished product is adopted for relevant research, on one hand, time and labor are wasted, and experimental operation on the finished product is difficult, the research on using the finished product in the laboratory environment is obviously unreasonable, on the other hand, the research result of the finished product is often not theoretical enough, and the most core and most general research result cannot be accurately obtained.
In summary, how to provide a device for simulating the state of non-uniform output rotation speed of a prime mover such as an actual piston engine in a laboratory is a problem that needs to be solved by those skilled in the art.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a rotational speed fluctuation generator, which is configured to simulate a state in which an output rotational speed of a prime mover such as an actual piston engine is not uniform in a laboratory.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the utility model provides a rotational speed fluctuation generator, including the control cover of inclined spline housing and rotatable cover locating inclined spline housing periphery, the axial symmetry of inclined spline housing is inserted and is equipped with first inclined spline shaft and the second inclined spline shaft that revolves opposite direction, first inclined spline shaft and second inclined spline shaft are connected with the inclined spline housing through first interior inclined spline and the interior inclined spline of second the same with self revolve to respectively, the length of first inclined spline shaft and second inclined spline shaft is all less than the interval of first interior inclined spline and the interior inclined spline of second, the control cover is connected with the drive arrangement who is used for controlling self and inclined spline housing along inclined spline housing axial reciprocating motion.
Preferably, in the above rotational speed fluctuation generator, the angle absolute values of the helix angles of the first internal spline and the second internal spline are equal.
Preferably, in the above rotational speed fluctuation generator, a bearing is connected between the bevel spline housing and the control housing, and a protrusion mounted in cooperation with the bearing is provided on the outer periphery of the bevel spline housing.
Preferably, in the above rotational speed fluctuation generator, the control sleeve includes a first housing and a second housing that are symmetrically disposed, and the first housing and the second housing are detachably connected.
Preferably, in the above rotational speed fluctuation generator, two ends of the maximum outer diameter of the control sleeve are respectively connected with a driving device, and the driving devices are connected with an external structure for controlling the synchronous movement of the driving devices.
Preferably, in the above rotational speed fluctuation generator, the driving device is specifically one of a servo linear motor, a crank link structure, a hydraulic cylinder, and a cylinder.
The invention provides a rotational speed fluctuation generator, which comprises a bevel spline sleeve and a rotatable control sleeve sleeved on the periphery of the bevel spline sleeve, wherein a first bevel spline shaft and a second bevel spline shaft with opposite rotation directions are symmetrically inserted in the axial direction of the bevel spline sleeve, the first bevel spline shaft and the second bevel spline shaft are respectively connected with the bevel spline sleeve through a first internal bevel spline and a second internal bevel spline which have the same rotation direction with the first bevel spline and the second bevel spline, the lengths of the first bevel spline shaft and the second bevel spline shaft are smaller than the interval between the first internal bevel spline and the second internal bevel spline, and the control sleeve is connected with a driving device for controlling the self and the bevel spline sleeve to reciprocate along the axial direction of the bevel spline sleeve.
When the rotational speed fluctuation generator provided by the invention is applied, the driving device drives the control sleeve and the inclined spline sleeve to move along the axis of the inclined spline sleeve, so that the inclined spline sleeve, the first inclined spline shaft and the second inclined spline shaft axially move relatively, the stroke, the frequency and the movement speed form of the reciprocating movement of the control sleeve are changed by controlling the driving force of the driving device, the aim of superposing set rotational speed fluctuation, namely torsional vibration, in the rotational movement transmission process can be fulfilled, the required uneven rotational speed output is formed, the state of actual prime mover output rotational speed fluctuation of a reciprocating engine and the like can be simulated, and further simulation test verification is carried out on the vibration, noise performance and reliability of a driven machine under the condition of input rotational speed fluctuation in a targeted manner. The rotating speed fluctuation generator is simple in structure, convenient to adjust and convenient to apply.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a front view cross-section structure of a rotational speed fluctuation generator according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a front view cross-section structure of a bevel spline housing according to an embodiment of the present invention.
The figures are marked as follows:
the novel gear comprises a bevel spline housing 1, a first housing 2, a second housing 3, a first bevel spline shaft 4, a second bevel spline shaft 5, a first internal bevel spline 6, a second internal bevel spline 7, a bearing 8 and a protrusion 9.
Detailed Description
The embodiment of the invention discloses a rotational speed fluctuation generator, which is used for simulating the state of the output rotational speed fluctuation of an actual prime motor under laboratory conditions and can be used for carrying out test verification and research on the rotational speed fluctuation condition in a targeted manner.
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 and fig. 2, fig. 1 is a schematic front view of a schematic cross-sectional structure of a rotational speed fluctuation generator according to an embodiment of the present invention, and fig. 2 is a schematic front view of a bevel spline housing according to an embodiment of the present invention.
The embodiment of the invention provides a rotation speed fluctuation generator, which comprises a bevel spline housing 1 and a rotatable control housing sleeved on the periphery of the bevel spline housing 1, wherein a first bevel spline shaft 4 and a second bevel spline shaft 5 with opposite rotation directions are symmetrically inserted in the axial direction of the bevel spline housing 1, the first bevel spline shaft 4 and the second bevel spline shaft 5 are respectively connected with the bevel spline housing 1 through a first internal bevel spline 6 and a second internal bevel spline 7 with the same rotation direction with the first bevel spline shaft, the lengths of the first bevel spline shaft 4 and the second bevel spline shaft 5 are smaller than the distance between the first internal bevel spline 6 and the second internal bevel spline 7, and the control housing is connected with a driving device for controlling the self and the bevel spline housing 1 to reciprocate along the axial direction of the bevel spline housing 1.
When the rotational speed fluctuation generator provided by the embodiment is applied, the driving device drives the control sleeve to drive the control sleeve and the inclined spline sleeve 1 to move along the axis of the inclined spline sleeve 1, so that the inclined spline sleeve 1, the first inclined spline shaft 4 and the second inclined spline shaft 5 axially move relatively, the driving force of the driving device is controlled to change the stroke, the frequency and the movement speed of the reciprocating motion of the control sleeve, the purpose of superposition of set rotational speed fluctuation, namely torsional vibration, in the rotational motion transmission process can be achieved, the required uneven rotational speed output is formed, the state of actual prime mover output rotational speed fluctuation of a reciprocating engine and the like can be simulated, and further simulation test verification is carried out on the vibration, the noise performance and the reliability of a driven machine under the condition of input rotational speed fluctuation. The rotating speed fluctuation generator is simple in structure, convenient to adjust and convenient to apply.
In the above-mentioned structural design, the length of first inclined spline shaft 4 and second inclined spline shaft 5 is all less than the interval of first internal inclined spline 6 and second internal inclined spline 7, can prevent to take place to interfere when inclined spline housing 1 is axial motion, avoids first internal inclined spline 6 and second inclined spline shaft 5 contact promptly, avoids second internal inclined spline 7 and first inclined spline shaft 4 contact to avoid influencing the accuracy of experimental result. The length of the bevel spline shaft herein refers to the effective key length that is contactable with the internal bevel spline, and the length portion that is irrelevant to the key connection is not taken into account.
In order to optimize the use effect of the first and second internal diagonal splines 6 and 7 in the above embodiment, the absolute values of the angles of the helix angles of the first and second internal diagonal splines 6 and 7 are equal. Preferably, the absolute values of the helix angles of the first internal inclined spline 6 and the second internal inclined spline 7 are equal, so that the axial forces acting on the inclined spline housing 1 generated in the power transmission of the internal inclined spline are equal in magnitude and opposite in direction, and the axial forces are mutually offset, thereby avoiding the damage of the axial forces to the inclined spline housing 1. Of course, the absolute values of the angles of the helix angles of the two internal helical splines of the helical spline housing 1 may also be unequal, so that corresponding test conditions can be created by using the same when needed.
In order to optimize the use effect of the bevel spline housing 1 in the above embodiment, a bearing 8 is connected between the bevel spline housing 1 and the control housing, and a protrusion 9 which is mounted in cooperation with the bearing 8 is arranged on the periphery of the bevel spline housing 1. Preferably, the inclined spline housing 1 is connected with the control housing bearing 8 through the bulge 9, so that the inclined spline housing 1 rotates more flexibly and smoothly relative to the control housing, the friction force of the rotation of the inclined spline housing 1 is reduced, and the service lives of the inclined spline housing 1 and the control housing are effectively prolonged. It should be noted that the bearing 8 may preferably be a thrust bearing, so as to better adapt to the state of the reciprocating axial movement of the inclined spline housing 1.
In order to optimize the use effect of the control sleeve in the above embodiment, the control sleeve includes a first housing 2 and a second housing 3 symmetrically disposed, and the first housing 2 and the second housing 3 are detachably connected. The preferred control sleeve comprises a pair of first casing 2 and second casing 3 that can dismantle the connection for the installation and the dismantlement of inclined spline housing 1 and bearing 8 are all comparatively convenient, all can in time dismantle the control sleeve and change when wherein arbitrary spare part damages, avoid delaying experimental progress.
In order to optimize the use effect of the driving device in the above embodiment, the two ends of the maximum outer diameter of the control sleeve are respectively connected with the driving device, and the driving device is connected with an external structure for controlling the synchronous movement of the driving device. Preferably, the two ends of the maximum outer diameter of the control sleeve are respectively connected with a synchronous motion driving device, so that the two ends of the control sleeve are subjected to synchronous uniform reciprocating external force, and the motion process of the control sleeve is controlled more accurately and reliably.
It will be appreciated that the drive means is in particular one of a servo linear motor, a crank link structure, a hydraulic cylinder and a cylinder. Preferably, one of the driving devices is adopted, so that a relatively stable driving force can be obtained on the basis of a certain cost, and the type of the driving device is not limited, and other driving devices capable of realizing a reciprocating driving process can be adopted.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
It should also be noted that in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. The utility model provides a rotational speed fluctuation generator, its characterized in that includes oblique spline housing (1) and rotatable cover are located the control cover of oblique spline housing (1) periphery, the axial symmetry of oblique spline housing (1) is inserted and is equipped with first oblique spline shaft (4) and second oblique spline shaft (5) that revolve opposite, first oblique spline shaft (4) with second oblique spline shaft (5) are respectively through first interior oblique spline (6) and second interior oblique spline (7) the same with self revolve to be connected with oblique spline housing (1), first oblique spline shaft (4) with the length of second oblique spline shaft (5) is all less than first interior oblique spline (6) with the interval of second interior oblique spline (7), the control cover is connected with and is used for controlling oneself with oblique spline housing (1) follow the drive arrangement of oblique spline housing (1) axial reciprocating motion.
2. The rotational speed wave generator according to claim 1, characterized in that the angle absolute values of the helix angles of the first and second internal helical splines (6, 7) are equal.
3. The rotational speed fluctuation generator according to claim 2, wherein a bearing (9) is connected between the bevel spline housing (1) and the control housing, and a protrusion (10) fitted with the bearing (9) is provided on the outer periphery of the bevel spline housing (1).
4. A rotational speed wave generator according to any one of claims 1-3, characterized in that the control sleeve comprises a first housing (2) and a second housing (3) arranged symmetrically, the first housing (2) and the second housing (3) being detachably connected.
5. The rotational speed wave generator according to claim 4, wherein the driving means is connected to both ends of the maximum outer diameter of the control sleeve, respectively, and the driving means is connected to an external structure for controlling the synchronous movement thereof.
6. The rotational speed wave generator according to claim 5, wherein the driving means is one of a servo linear motor, a crank-link structure, a hydraulic cylinder and a cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611219064.6A CN106763610B (en) | 2016-12-26 | 2016-12-26 | Rotational speed fluctuation generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611219064.6A CN106763610B (en) | 2016-12-26 | 2016-12-26 | Rotational speed fluctuation generator |
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| Publication Number | Publication Date |
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| CN106763610A CN106763610A (en) | 2017-05-31 |
| CN106763610B true CN106763610B (en) | 2023-05-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611219064.6A Active CN106763610B (en) | 2016-12-26 | 2016-12-26 | Rotational speed fluctuation generator |
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| CN (1) | CN106763610B (en) |
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