CN115235384B - Laser rotation centering device - Google Patents
Laser rotation centering device Download PDFInfo
- Publication number
- CN115235384B CN115235384B CN202210865039.4A CN202210865039A CN115235384B CN 115235384 B CN115235384 B CN 115235384B CN 202210865039 A CN202210865039 A CN 202210865039A CN 115235384 B CN115235384 B CN 115235384B
- Authority
- CN
- China
- Prior art keywords
- centering
- rotor
- laser
- axis
- centering rotor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000007423 decrease Effects 0.000 claims abstract description 7
- 230000005540 biological transmission Effects 0.000 claims description 33
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 18
- 229910052799 carbon Inorganic materials 0.000 claims description 18
- 230000001105 regulatory effect Effects 0.000 claims description 13
- 244000126211 Hericium coralloides Species 0.000 claims description 11
- 230000005484 gravity Effects 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 3
- 230000033001 locomotion Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 description 16
- 230000008569 process Effects 0.000 description 13
- 230000001681 protective effect Effects 0.000 description 9
- 230000009471 action Effects 0.000 description 6
- 230000008859 change Effects 0.000 description 4
- 238000012360 testing method Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
- G01B11/27—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Lasers (AREA)
- Laser Beam Processing (AREA)
Abstract
The application relates to a laser rotation centering device, comprising: the adapter flange is provided with a driving motor, and the axis of the driving motor is collinear with the axis of the adapter flange; a centering rotor coaxially connected with the driving motor, and the driving motor drives the centering rotor to rotate; the laser transmitter is rotationally connected to the centering rotor and is far away from the axis of the centering rotor, and the laser beam of the laser transmitter and the axis of the centering rotor are on the same plane; the angle between the laser beam of the laser transmitter and the axis of the centering rotor increases with the rotational speed of the centering rotor or decreases with the rotational speed of the centering rotor. The device uses the driving motor to drive the laser transmitter to rotate and centrifugally move, and the axis position is visually displayed through the light spot formed by the rotation of the laser beam. The application can effectively promote centering work and correct errors in time, and improves centering efficiency.
Description
Technical Field
The application relates to the technical field of transmission shaft centering measuring tools, in particular to a laser rotation centering device.
Background
When the engine/motor bench test is carried out, the central axis of the crankshaft/rotor of the engine/motor needs to be coaxial with the central axis of the rotor of the dynamometer system, and excessive vibration can be caused in incorrect alignment, so that the service life of the bearing bush/bearing of the engine/motor is shortened, and the test result is invalid or a test sample is damaged. Conventionally, a dial indicator or a laser centering instrument is used for centering, the requirement on operation experience in the centering process is high, and the influence of human factors on centering results is high.
The conventional operation is to determine the wheelbase first and then perform centering, when the centering is performed, the engine/motor needs to be adjusted, the wheelbase between the engine/motor and the dynamometer also changes in the adjustment process, and at the moment, the engine/motor needs to be centered and the wheelbase needs to be checked at the same time, so that the centering work is excessively complicated. If the wheelbase is not verified in the centering process, the existing centering scheme is utilized, the centering work can still be completed, and the change of the wheelbase after the centering is completed can cause the overlarge wheelbase of the transmission shaft to cause reworking.
Disclosure of Invention
The embodiment of the application provides a laser rotation centering device, which aims to solve the problems of higher requirement on operation experience, excessively complicated centering work and low centering efficiency in the centering process of a transmission shaft in the related technology.
The embodiment of the application provides a laser rotation centering device, which comprises:
the connecting flange is provided with a driving motor, and the axis of the driving motor is collinear with the axis of the connecting flange;
The centering rotor is coaxially connected with the driving motor, and the driving motor drives the centering rotor to rotate from low speed to high speed and/or from high speed to low speed and/or at a constant speed;
the laser transmitter is rotationally connected to the centering rotor and is far away from the axis of the centering rotor, and the laser beam of the laser transmitter and the axis of the centering rotor are on the same plane;
the included angle between the laser beam of the laser transmitter and the axis of the centering rotor increases along with the increase of the rotating speed of the centering rotor or decreases along with the increase of the rotating speed of the centering rotor.
In some embodiments: the centering rotor is of a disc-shaped structure or a central symmetrical structure, and is provided with a mounting hole for mounting the laser emitter;
the laser transmitter is rotationally connected in the mounting hole through the mounting bracket, and the rotation axis of the laser transmitter is mutually perpendicular to the axis of the centering rotor.
In some embodiments: a rotating shaft which is rotationally connected with the mounting bracket is arranged in the mounting hole of the centering rotor, and the mounting bracket and the laser transmitter rotate on the centering rotor around the axis of the rotating shaft;
When the included angle between the laser beam of the laser transmitter and the axis of the centering rotor increases along with the increase of the rotating speed of the centering rotor, the gravity centers of the laser transmitter and the mounting bracket are far away from the transmitting end of the laser transmitter;
When the included angle between the laser beam of the laser transmitter and the axis of the centering rotor is reduced along with the increase of the rotating speed of the centering rotor, the gravity centers of the laser transmitter and the mounting bracket are close to the transmitting end of the laser transmitter.
In some embodiments: the centering rotor is also provided with a centrifugal countermeasure spring and a position retaining spring which are connected with the mounting bracket, and the centrifugal countermeasure spring and the position retaining spring are respectively positioned at two sides of the mounting bracket;
And the distance between the centrifugal counter spring and the axis of the centering rotor is greater than the distance between the position maintaining spring and the axis of the centering rotor.
In some embodiments: the driving motor is a pneumatic motor, the pneumatic motor comprises a shaft rod coaxially connected with the adapter flange and an annular shell positioned at the periphery of the shaft rod and coaxially connected with the adapter flange, and an annular gas expansion cavity is formed between the shaft rod and the annular shell;
The centering rotor is close to the annular rotor in the annular gas expansion cavity, and a plurality of rotor blades which are in sliding connection with the annular shell are arranged around the annular rotor.
In some embodiments: the side wall of the annular shell is provided with an air inlet hole for introducing compressed air into the annular gas expansion cavity and an air outlet hole for discharging the air in the annular gas expansion cavity;
The end face of the annular shell is provided with an annular comb tooth tip which is in sealing connection with the centering rotor, and one end of the centering rotor, which is close to the annular shell, is provided with an annular comb tooth step which is matched with the comb tooth tip.
In some embodiments: the air inlet is connected with an air pipe quick connector, the air pipe quick connector is connected with an air pipe, the air pipe is connected with a pressure regulating valve in series, and the pressure regulating valve regulates the rotating speed of the pneumatic motor by regulating the air inlet flow.
In some embodiments: the bearing mounting hole is formed between the inner hole of the centering rotor and the shaft lever, the shaft lever is sleeved with a bearing, the shaft lever is provided with a check ring for fixing the bearing on the shaft lever, and the inner hole of the centering rotor is provided with a check ring for fixing the bearing on the centering rotor.
In some embodiments: the positive electrode carbon brush and the negative electrode carbon brush are fixedly arranged at one end, close to the centering rotor, of the adapter flange, and the positive electrode electric slip ring and the negative electrode electric slip ring which are respectively connected with the positive electrode carbon brush and the negative electrode carbon brush in a sliding manner are arranged at one end, close to the adapter flange, of the centering rotor;
the laser transmitter is provided with an anode wire and a cathode wire, the anode wire is connected with an anode electric slip ring, and the cathode wire is connected with a cathode electric slip ring.
In some embodiments: the one end that is close to centering rotor on the flange of adapter can dismantle and be connected with the protection target dish, set up the centering hole on the protection target dish, the centre of a circle of centering hole is located the axis of flange of adapter, the annular light trap that sees out laser beam has still been seted up on the protection target dish.
The technical scheme provided by the application has the beneficial effects that:
The embodiment of the application provides a laser rotary centering device, which is provided with an adapter flange, wherein a driving motor is arranged on the adapter flange, and the axis of the driving motor is collinear with the axis of the adapter flange; a centering rotor coaxially connected to a drive motor which drives the centering rotor in a rotary motion from low speed to high speed and/or from high speed to low speed and/or at a constant speed; the laser transmitter is rotationally connected to the centering rotor and is far away from the axis of the centering rotor, and the laser beam of the laser transmitter and the axis of the centering rotor are on the same plane; the angle between the laser beam of the laser transmitter and the axis of the centering rotor increases with an increasing rotational speed of the centering rotor or decreases with an increasing rotational speed of the centering rotor.
Therefore, when the laser rotation centering device is used for centering two transmission shafts, the laser rotation centering device is arranged at the end parts of the two transmission shafts, the adapter flange of the laser rotation centering device is connected with the end parts of the transmission shafts, and the axis of the adapter flange is ensured to be collinear with the axis of the transmission shafts. Starting a driving motor, driving the centering rotor and the laser transmitter to synchronously rotate, enabling the laser transmitter to rotate under the action of centrifugal force in the rotating process, and enabling the laser beam of the laser transmitter to irradiate the central position of the other laser rotating centering device and form an annular aperture or light spot. When the aperture is formed, the rotating speed of the driving motor is required to be increased or reduced so as to increase the included angle between the laser beam and the axis of the centering rotor, so that the laser beam of the laser transmitter irradiates on the central position of the other laser rotating centering device to form a light spot, and then the axis centering is completed.
When the two transmission shafts finish the axis centering, the position of one transmission shaft is adjusted, so that the distance between the two transmission shafts is gradually reduced, and meanwhile, the rotating speed of the driving motor is gradually increased or reduced, and the laser beam of the laser transmitter is kept to irradiate the central position of the other laser rotating centering device and form a light spot. The connecting line between the light spots formed by the mutual irradiation of the two laser transmitters is the axis after the alignment of the two transmission shafts, so that the coaxiality of the two transmission shafts after the alignment is ensured. The device uses the driving motor to drive the laser transmitter to rotate and centrifugally move, and the light spots formed by the rotation of the laser beams visually display the axle center of the engine/motor and the axle center of the dynamometer. When the wheelbase changes, the light type of the laser beam can obviously change to cause that the centering work cannot be continued, the light type can be automatically restored after the wheelbase or the distance is restored and adjusted, the centering work can be effectively propelled, the error can be timely corrected, and the centering efficiency is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and 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 the structure of two laser rotation centering devices according to an embodiment of the present application;
FIG. 2 is an exploded view of the structure of a laser rotation centering device according to an embodiment of the present application;
FIG. 3 is a cross-sectional view of a first view of a laser rotation centering device according to an embodiment of the present application;
fig. 4 is a cross-sectional view of a second view of a laser rotation centering device according to an embodiment of the present application.
Reference numerals:
1. an adapter flange; 2. a drive motor; 3. centering the rotor; 4. a laser emitter; 5. a protective target plate;
11. A shaft lever; 12. an annular housing; 13. a bearing; 14. a quick joint of the air pipe; 15. a vent pipe; 16. a positive carbon brush; 17. a negative carbon brush; 18. a retainer ring for the shaft; 19. a retainer ring for holes;
21. An annular rotor; 22. a rotor blade; 31. a mounting hole; 32. a mounting bracket; 33. centrifuging the opposing spring; 34. a position holding spring; 35. a rotating shaft;
41. a laser beam; 51. a centering hole; 52. annular light holes.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The embodiment of the application provides a laser rotary centering device, which can solve the problems of higher requirements on operation experience, excessively complicated centering work and low centering efficiency in the centering process of a transmission shaft in the related technology.
Referring to fig. 1 to 4, an embodiment of the present application provides a laser rotation centering device, including:
the adapter flange 1 is of a disc-shaped structure, a plurality of threaded holes are formed in the circumference of the adapter flange 1, and the plurality of threaded holes in the adapter flange 1 are used for coaxially mounting the adapter flange 1 on a rotor output shaft of an engine, a motor and a dynamometer which need centering. A drive motor 2 is also provided on the adapter flange 1, which drive motor 2 can be a pneumatic motor or an electric motor, which drive motor 2 has an axis collinear with the axis of the adapter flange 1, so as to ensure that the axis of the drive motor 2 is also collinear with the axis of the rotor output shaft of the engine, motor, dynamometer.
A centering rotor 3, the centering rotor 3 being coaxially connected to the drive motor 2, the drive motor 2 driving the centering rotor 3 in a rotary movement from low speed to high speed and/or from high speed to low speed and/or at constant speed. The centering rotor 3 is of a central symmetry structure, the centering rotor 3 is used for installing the laser emitter 4, and when the centering rotor 3 drives the laser emitter 4 to synchronously rotate, the laser emitter 4 generates centrifugal force during rotation so as to change the irradiation angle of the laser beam 41 of the laser emitter 4.
A laser transmitter 4, which laser transmitter 4 is rotatably connected to the centring rotor 3 and is remote from the axis of the centring rotor 3, the laser beam 41 of the laser transmitter 4 being on the same plane as the axis of the centring rotor 3. The laser transmitter 4 is configured to emit a laser beam 41 outwards, the laser beam 41 being visible light. The laser transmitter 4 is capable of rotating the laser beam 41 of the laser transmitter 4 to form an annular aperture or spot when the laser transmitter 4 is rotated on the centering rotor 3.
The laser beam 41 of the laser transmitter 4 is on the same plane as the axis of the centring rotor 3, and the angle between the laser beam of the laser transmitter 4 and the axis of the centring rotor 3 increases with increasing rotational speed of the centring rotor 3 or decreases with increasing rotational speed of the centring rotor 3. The rotation speed of the centering rotor 3 is regulated by the driving motor 2 so that the laser transmitter 4 generates different centrifugal forces, the irradiation angle of the laser beam 41 can be changed by the magnitude of the centrifugal forces, and when the irradiation angle of the laser beam 41 needs to be changed, the rotation speed of the driving motor 2 is regulated.
When the laser rotation centering device is used for centering two transmission shafts, the laser rotation centering device is arranged at the end parts of the two transmission shafts, the adapter flange 1 of the laser rotation centering device is connected with the end parts of the transmission shafts, and the axis of the adapter flange 1 is ensured to be collinear with the axis of the transmission shafts. The driving motor 2 is started, and the driving motor 2 drives the centering rotor 3 and the laser transmitter 4 to synchronously rotate.
The laser transmitter 4 rotates itself relative to the centering rotor 3 under the influence of centrifugal force during rotation, and the laser beam 41 of the laser transmitter 4 irradiates the center position of the other laser rotation centering device and forms an annular aperture or a light spot. When forming the aperture, the rotation speed of the driving motor 2 needs to be increased or decreased to increase the included angle between the laser beam 41 and the axis of the centering rotor 3, so that the laser beam 41 of the laser transmitter 4 irradiates the center position of the other laser rotation centering device to form a light spot, and then the axis centering is completed.
When the two transmission shafts are aligned, the position of one transmission shaft is adjusted, so that the distance between the two transmission shafts is gradually reduced, and the rotating speed of the driving motor 2 is gradually increased or reduced, and the laser beam 41 of the laser emitter 4 is kept to irradiate the central position of the other laser rotation centering device and form a light spot. The connecting line between the light spots formed by the mutual irradiation of the laser transmitters 4 of the two laser rotary centering devices is the axis after the centering of the two transmission shafts, so that the coaxiality of the two transmission shafts after the centering is ensured.
The laser rotation centering device uses the driving motor 2 to drive the laser emitter 4 to rotate and centrifugally move, and the light spots formed by the rotation of the laser beam 41 visually display the axle center of the engine/motor and the axle center of the dynamometer. When the wheelbase changes, the light type of the laser beam 41 can be obviously changed to cause that the centering work cannot be continued, the light type can be automatically recovered after the wheelbase or the distance is recovered, the centering work can be effectively propelled, the error correction is timely carried out, and the centering efficiency is improved.
In some alternative embodiments: referring to fig. 2 to 4, an embodiment of the present application provides a laser rotation centering device, in which a centering rotor 3 of the laser rotation centering device has a disc-shaped structure or a central symmetrical structure, and a mounting hole 31 for mounting a laser emitter 4 is formed in the centering rotor 3. The laser transmitter 4 is rotatably connected in the mounting hole 31 through the mounting bracket 32, and the rotation axis of the laser transmitter 4 is mutually perpendicular to the axis of the centering rotor 3. The centering rotor 3 adopts a disc-shaped structure or a central symmetrical structure to prevent the centering rotor 3 from vibrating when rotating. The rotation axis of the laser transmitter 4 is perpendicular to the axis of the centering rotor 3, so that the laser beam 41 of the laser transmitter 4 and the axis of the centering rotor 3 are on the same plane, and an included angle is formed between the laser beam 41 of the laser transmitter 4 and the axis of the centering rotor 3, and the included angle is the irradiation angle of the laser beam 41.
A rotating shaft 35 which is rotatably connected with the mounting bracket 32 is arranged in the mounting hole of the centering rotor 3, and the mounting bracket 32 and the laser transmitter 4 rotate on the centering rotor 3 around the axis of the rotating shaft 35. When the angle between the laser beam 41 of the laser transmitter 4 and the axis of the centring rotor 3 increases with increasing rotational speed of the centring rotor 3, the centre of gravity of the laser transmitter 4 and the mounting bracket 32 is remote from the transmitting end of the laser transmitter 4. When the angle between the laser beam 41 of the laser transmitter 4 and the axis of the centring rotor 3 decreases with increasing rotational speed of the centring rotor 3, the centre of gravity of the laser transmitter 4 and the mounting bracket 32 approaches the transmitting end of the laser transmitter 4.
The centering rotor 3 is further provided with a centrifugal counter spring 33 and a position maintaining spring 34 connected with the mounting bracket 32, the centrifugal counter spring 33 and the position maintaining spring 34 are respectively positioned at two sides of the mounting bracket 32, and the distance between the centrifugal counter spring 33 and the axis of the centering rotor 3 is larger than the distance between the position maintaining spring 34 and the axis of the centering rotor 3. The centrifugal counter spring 33 and the position maintaining spring 34 are preferably helical compression springs, and the centrifugal counter spring 33 is used for elastically supporting the mounting bracket 32 to linearly adjust the rotation angle of the laser transmitter 4 under the action of centrifugal force; that is, as the laser transmitter 4 is subjected to a larger centrifugal force, the larger the amount of compression of the centrifugal counter spring 33, the larger the rotation angle of the laser transmitter 4. The position maintaining spring 34 serves to gradually restore the laser transmitter 4 to the original position as the laser transmitter 4 is subjected to centrifugal force.
In some alternative embodiments: referring to fig. 2 to 4, an embodiment of the present application provides a laser rotation centering device, in which a driving motor 2 is preferably an air motor, the air motor includes a shaft 11 coaxially connected to a adapter flange 1, and an annular housing 12 located at an outer circumference of the shaft 11 and coaxially connected to the adapter flange 1, and an annular gas expansion chamber is formed between the shaft 11 and the annular housing 12. An annular rotor 21 positioned in the annular gas expansion chamber is coaxially connected to one end of the centering rotor 3 close to the adapter flange 1, and a plurality of rotor blades 22 which are in sliding connection with the annular housing 12 are arranged around the annular rotor 21.
The side wall of the annular housing 12 is provided with an air inlet hole for introducing compressed air into the annular gas expansion chamber and an air outlet hole for discharging air in the annular gas expansion chamber. An annular comb tooth tip which is in sealing connection with the centering rotor 3 is arranged on the end face of the annular shell 12, an annular comb tooth step which is matched with the comb tooth tip is arranged at one end, close to the annular shell 12, of the centering rotor 3, and the annular comb tooth tip and the annular comb tooth step are mutually matched, so that the centering rotor 3 is sealed on the annular shell 12 in a rotating mode. The air inlet is connected with an air pipe quick connector 14, the air pipe quick connector 14 is connected with an air pipe 15, and the air pipe 15 is connected with a pressure regulating valve (not shown in the figure) in series, and the pressure regulating valve regulates the rotating speed of the pneumatic motor by regulating the air inlet flow.
When the device is used, a compressed air source is connected to the vent pipe 15, compressed air enters the annular air expansion cavity from the air pipe quick connector 14, compressed air in the annular air expansion cavity expands to push the rotor blades 22 to move towards the vent holes, the rotor blades 22 push the centering rotor 3 to rotate, the compressed air is discharged through the vent hole after expansion, the expansion process is continuously circulated, the centering rotor 3 continuously rotates, and the rotating speed of the centering rotor 3 is regulated through the pressure regulating valve. When the centering rotor 3 rotates, the laser transmitter 4 is radially deflected against the spring force of the spring 33 by centrifugal force, the direction of the laser beam 41 is deflected toward the axial direction, and the air pressure is adjusted until the laser beam 41 forms a spot at the center of the other laser rotation centering device.
And similarly, adjusting the air source pressure of the other laser rotary centering device, and centering the laser beam 41 of the other laser rotary centering device to the center of the laser rotary centering device to finish centering. In the adjustment process, if the distance between the two transmission shafts is changed, the spot diameter of the laser beam 41 of the double-sided laser rotary centering device is enlarged or becomes an annular aperture, and after the laser beam is adjusted to the target distance, the spot of the laser rotary centering device is recovered, and the centering is continued until the completion.
In some alternative embodiments: referring to fig. 2 to 4, an embodiment of the present application provides a laser rotation centering device in which a bearing mounting hole is formed between an inner hole of a centering rotor 3 and a shaft 11. The shaft lever 11 is sleeved with two coaxially arranged bearings 13, the shaft lever 11 is provided with a shaft retainer ring 18 for fixing the bearings 13 on the shaft lever 11, and the shaft retainer ring 18 is used for axially limiting the bearings 13 so as to enable the bearings 13 to rotate on the shaft lever 11. The inner bore of the centering rotor 3 is provided with a hole retainer 19 for fixing the bearing 13 to the centering rotor 3, the hole retainer 19 being used for axially limiting the centering rotor 3 so that the centering rotor 3 rotates on the bearing 13.
The end of the adapter flange 1, which is close to the centering rotor 3, is fixedly provided with a positive carbon brush 16 and a negative carbon brush 17, and the end of the centering rotor 3, which is close to the adapter flange 1, is provided with a positive electric slip ring (not shown) and a negative electric slip ring (not shown) which are respectively connected with the positive carbon brush 16 and the negative carbon brush 17 in a sliding manner. The laser transmitter 4 is provided with a positive electrode wire (not shown in the figure) and a negative electrode wire (not shown in the figure), the positive electrode wire is connected with the positive electrode electric slip ring, and the negative electrode wire is connected with the negative electrode electric slip ring. The positive carbon brush 16 and the negative carbon brush 17 supply power to the laser emitter 4 through the positive electrical slip ring and the negative electrical slip ring, so that the laser emitter 4 is reliably connected with an external power supply in a rotating state, and the laser emitter 4 can be powered by a battery, so that the positive carbon brush 16 and the negative carbon brush 17 are canceled.
In some alternative embodiments: referring to fig. 1 to 4, an embodiment of the present application provides a laser rotary centering device, in which a protective target disc 5 is detachably connected to an end of an adapter flange 1 near a centering rotor 3, and the protective target disc 5 is used to conceal the centering rotor 3, a driving motor 2 and a laser transmitter 4 in the protective target disc 5. The protective target plate 5 is provided with a centering hole 51, the center of the centering hole 51 is positioned on the axis of the adapter flange 1, and the protective target plate 5 is also provided with an annular light-transmitting hole 52 for transmitting the laser beam 41.
The protection target disk 5 of the embodiment of the application is not only used for protecting the centering rotor 3, the driving motor 2 and the laser transmitter 4, but also used for preventing the centering rotor 3, the driving motor 2 and the laser transmitter 4 from colliding in the rotating process. Further, a centering hole 51 is provided in the center position of the protective target 5, and an annular light transmitting hole 52 is provided concentrically with the centering hole 51, the centering hole 51 being for positioning the spot of the laser beam 41, and centering being completed when the spot of the laser beam 41 coincides with the centering hole 51. The annular light hole 52 is used for avoiding the shielding of the laser beam 41 by the protective target disk 5, and further directing the laser beam 41 to the protective target disk 5 of another laser rotation centering device.
Principle of operation
The embodiment of the application provides a laser rotation centering device, which is provided with an adapter flange 1, wherein a driving motor 2 is arranged on the adapter flange 1, and the axis of the driving motor 2 is collinear with the axis of the adapter flange 1; a centering rotor 3, the centering rotor 3 being coaxially connected to the drive motor 2, the drive motor 2 driving the centering rotor 3 to rotate from low speed to high speed and/or from high speed to low speed and/or at a constant speed; a laser transmitter 4, the laser transmitter 4 being rotatably connected to the centering rotor 3 and being remote from the axis of the centering rotor 3, the laser beam 41 of the laser transmitter 4 being on the same plane as the axis of the centering rotor 3; the angle between the laser beam 41 of the laser transmitter 4 and the axis of the centring rotor 3 increases with increasing rotational speed of the centring rotor 3 or decreases with increasing rotational speed of the centring rotor 3.
Therefore, when the laser rotation centering device performs centering operation on two transmission shafts, the laser rotation centering device is arranged at the end parts of the two transmission shafts, the adapter flange 1 of the laser rotation centering device is connected with the end parts of the transmission shafts, and the axis of the adapter flange 1 is ensured to be collinear with the axis of the transmission shafts. The driving motor 2 is started, the driving motor 2 drives the centering rotor 3 and the laser transmitter 4 to synchronously rotate, the laser transmitter 4 is radially deflected under the action of centrifugal force in the rotating process, and the laser beam 41 of the laser transmitter 4 irradiates the center position of the other laser rotating centering device and forms an annular aperture or a light spot. When forming the aperture, the rotation speed of the driving motor 2 needs to be increased or decreased to increase the included angle between the laser beam 41 and the axis of the centering rotor 3, so that the laser beam 41 of the laser transmitter 4 irradiates the center position of the other laser rotation centering device to form a light spot, and then the axis centering is completed.
When the two transmission shafts are aligned, the position of one transmission shaft is adjusted, so that the distance between the two transmission shafts is gradually reduced, and the rotating speed of the driving motor 2 is gradually increased or reduced, and the laser beam 41 of the laser emitter 4 is kept to irradiate the central position of the other laser rotation centering device and form a light spot. The connecting line between the light spots formed by the mutual irradiation of the two laser transmitters is the axis after the alignment of the two transmission shafts, so that the coaxiality of the two transmission shafts after the alignment is ensured. The device uses the driving motor 2 to drive the laser emitter 4 to rotate and centrifugally move, and the light spots formed by the rotation of the laser beam 41 visually display the axle center of the engine/motor and the axle center of the dynamometer. When the wheelbase changes, the light type of the laser beam can obviously change to cause that the centering work cannot be continued, the light type can be automatically restored after the wheelbase or the distance is restored and adjusted, the centering work can be effectively propelled, the error can be timely corrected, and the centering efficiency is improved.
In the description of the present application, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present application and simplifying the description, and are not indicative or implying that the apparatus or element in question must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present application. Unless specifically stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
It should be noted that in the present application, 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 foregoing is only a specific embodiment of the application to enable those skilled in the art to understand or practice the application. 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 application. Thus, the present application 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 (8)
1. A laser rotation centering device, comprising:
The connecting flange (1), a driving motor (2) is arranged on the connecting flange (1), and the axis of the driving motor (2) is collinear with the axis of the connecting flange (1);
-a centering rotor (3), the centering rotor (3) being coaxially connected to the drive motor (2), the drive motor (2) driving a rotational movement of the centering rotor (3) from low speed to high speed and/or from high speed to low speed and/or at constant speed;
A laser transmitter (4), wherein the laser transmitter (4) is rotatably connected to the centering rotor (3) and is far away from the axis of the centering rotor (3), and a laser beam (41) of the laser transmitter (4) and the axis of the centering rotor (3) are on the same plane;
the included angle between the laser beam (41) of the laser transmitter (4) and the axis of the centering rotor (3) increases along with the increase of the rotating speed of the centering rotor (3) or decreases along with the increase of the rotating speed of the centering rotor (3);
The centering rotor (3) is of a central symmetrical structure, and the centering rotor (3) is provided with a mounting hole (31) for mounting the laser emitter (4);
The laser transmitter (4) is rotatably connected in the mounting hole (31) through the mounting bracket (32), and the rotation axis of the laser transmitter (4) is mutually perpendicular to the axis of the centering rotor (3);
A rotating shaft (35) which is rotationally connected with the mounting bracket (32) is arranged in the mounting hole (31) of the centering rotor (3), and the mounting bracket (32) and the laser emitter (4) rotate on the centering rotor (3) around the axis of the rotating shaft (35);
The centering rotor (3) is also provided with a centrifugal counter spring (33) and a position maintaining spring (34) which are connected with the mounting bracket (32), and the centrifugal counter spring (33) and the position maintaining spring (34) are respectively positioned at two sides of the mounting bracket (32);
and the distance between the centrifugal counter spring (33) and the axis of the centering rotor (3) is greater than the distance between the position maintaining spring (34) and the axis of the centering rotor (3).
2. A laser rotation centering device as claimed in claim 1, wherein:
When the included angle between the laser beam (41) of the laser transmitter (4) and the axis of the centering rotor (3) increases along with the increase of the rotating speed of the centering rotor (3), the gravity centers of the laser transmitter (4) and the mounting bracket (32) are far away from the transmitting end of the laser transmitter (4);
When the included angle between the laser beam (41) of the laser transmitter (4) and the axis of the centering rotor (3) is reduced along with the increase of the rotating speed of the centering rotor (3), the gravity centers of the laser transmitter (4) and the mounting bracket (32) are close to the transmitting end of the laser transmitter (4).
3. A laser rotation centering device as claimed in claim 1, wherein:
the driving motor (2) is a pneumatic motor, the pneumatic motor comprises a shaft rod (11) coaxially connected with the adapter flange (1) and an annular shell (12) positioned at the periphery of the shaft rod (11) and coaxially connected with the adapter flange (1), and an annular gas expansion cavity is formed between the shaft rod (11) and the annular shell (12);
One end of the centering rotor (3) close to the adapter flange (1) is coaxially connected with an annular rotor (21) positioned in the annular gas expansion cavity, and a plurality of rotor blades (22) which are in sliding connection with the annular shell (12) are arranged around the annular rotor (21).
4. A laser rotation centering device as claimed in claim 3, wherein:
The side wall of the annular shell (12) is provided with an air inlet hole for introducing compressed air into the annular gas expansion cavity and an air outlet hole for discharging the air in the annular gas expansion cavity;
The end face of the annular shell (12) is provided with an annular comb tooth tip which is in sealing connection with the centering rotor (3), and one end, close to the annular shell, of the centering rotor (3) is provided with an annular comb tooth step matched with the comb tooth tip.
5. A laser rotation centering device as claimed in claim 4, wherein:
the air inlet is connected with an air pipe quick connector (14), the air pipe quick connector (14) is connected with an air pipe (15), the air pipe (15) is connected with a pressure regulating valve in series, and the pressure regulating valve regulates the rotating speed of the pneumatic motor by regulating the air inlet flow.
6. A laser rotation centering device as claimed in claim 3, wherein:
bearing mounting holes are formed between the inner holes of the centering rotor (3) and the shaft lever (11), the shaft lever (11) is sleeved with a bearing (13), the shaft lever (11) is provided with a check ring (18) for fixing the bearing (13) on the shaft lever (11), and the inner holes of the centering rotor (3) are provided with check rings (19) for fixing the bearing (13) on the centering rotor (3).
7. A laser rotation centering device as claimed in claim 1, wherein:
an anode carbon brush (16) and a cathode carbon brush (17) are fixedly arranged at one end, close to the centering rotor (3), of the adapter flange (1), and an anode electric slip ring and a cathode electric slip ring which are respectively connected with the anode carbon brush (16) and the cathode carbon brush (17) in a sliding manner are arranged at one end, close to the adapter flange (1), of the centering rotor (3);
The laser transmitter (4) is provided with an anode wire and a cathode wire, the anode wire is connected with an anode electric slip ring, and the cathode wire is connected with a cathode electric slip ring.
8. A laser rotation centering device as claimed in claim 1, wherein:
One end of the adapter flange (1) close to the centering rotor (3) is detachably connected with a protection target disc (5), a centering hole (51) is formed in the protection target disc (5), the circle center of the centering hole (51) is located on the axis of the adapter flange (1), and an annular light transmission hole (52) for transmitting laser beams (41) is formed in the protection target disc (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210865039.4A CN115235384B (en) | 2022-07-21 | 2022-07-21 | Laser rotation centering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210865039.4A CN115235384B (en) | 2022-07-21 | 2022-07-21 | Laser rotation centering device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115235384A CN115235384A (en) | 2022-10-25 |
| CN115235384B true CN115235384B (en) | 2024-06-21 |
Family
ID=83674533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210865039.4A Active CN115235384B (en) | 2022-07-21 | 2022-07-21 | Laser rotation centering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115235384B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101298982A (en) * | 2008-07-02 | 2008-11-05 | 瑞安市瑞光光电仪器有限公司 | Method and instrument for calibrating rotary shaft coaxiality |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3531156C1 (en) * | 1985-08-31 | 1986-09-04 | Deutsche Forschungs- und Versuchsanstalt für Luft- und Raumfahrt e.V., 5000 Köln | Method for aligning the axis of a second holder with respect to the axis of a first holder in a testing or processing machine |
| KR100350519B1 (en) * | 2000-08-11 | 2002-08-28 | 현대자동차주식회사 | Shaft aligning device and method of engine and dinamometer |
| JP4066708B2 (en) * | 2002-05-10 | 2008-03-26 | 株式会社明電舎 | Engine dynamometer shaft centering method |
| RU2352901C2 (en) * | 2006-06-15 | 2009-04-20 | Открытое акционерное общество "АВТОВАЗ" | Method for alignment of rotary mating shafts axes that make composite shafting, relative to axis of drive shaft of braking machine of motor bench and axis of crankshaft of test subject - internal combustion engine (versions) |
| CN103389049B (en) * | 2012-05-08 | 2016-03-02 | 中国计量科学研究院 | The adjustment that lathe cradle-type composite turntable axial space intersects vertically and detection method |
| CN103296845B (en) * | 2013-04-22 | 2015-03-11 | 宁波富仕达电力工程有限责任公司 | Centring method in process of mounting generator rotor in threading mode |
| CN106989699B (en) * | 2017-05-16 | 2023-01-17 | 广东省计量科学研究院（华南国家计量测试中心） | Laser centering instrument calibration equipment and method for measuring indication error of laser centering instrument through laser centering instrument calibration equipment |
| CN107727006A (en) * | 2017-08-04 | 2018-02-23 | 江苏亘德科技有限公司 | A kind of bearing centralising device |
-
2022
- 2022-07-21 CN CN202210865039.4A patent/CN115235384B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101298982A (en) * | 2008-07-02 | 2008-11-05 | 瑞安市瑞光光电仪器有限公司 | Method and instrument for calibrating rotary shaft coaxiality |
Non-Patent Citations (1)
| Title |
|---|
| 激光对中在内燃机台架测试中的应用浅析;李兰;《重型汽车》;20210630;第2021年卷(第03期);33-35 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115235384A (en) | 2022-10-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2019026673A1 (en) | Rotation drive device, method for mounting rotation drive device, axial flow blower, method for mounting axial flow blower, and lasing device | |
| CN110064909B (en) | Positioning tool, positioning test device and method for measuring bevel gear circumferential backlash | |
| JPH0419365B2 (en) | ||
| CN115235384B (en) | Laser rotation centering device | |
| CN106949814A (en) | Rapid assembling and adjusting device for precisely assembled bearing and using method | |
| KR101470863B1 (en) | dynamometer assembly | |
| CN110057498B (en) | Device for balance test of booster-stage rotor of engine fan | |
| CN209230447U (en) | A kind of rotor and stator are attached together to neutral cubing | |
| CN111458864B (en) | Light collecting lens with calibratable optical axis and optical axis calibration method | |
| WO2024174534A1 (en) | Method for adjusting shaft seal nuclear main pump upper motor support and motor center in nuclear power plant | |
| CN212567790U (en) | Rotor unbalance fault simulation test bed | |
| CN109328492B (en) | Novel high-efficient miniature rotary cultivator | |
| CN109060339B (en) | Testing device and method | |
| CN220084241U (en) | Dynamic balance correction device of impeller | |
| CN114152204B (en) | Aero-engine blade tip clearance detection device | |
| CN219015660U (en) | Connecting device for bench test of automatic transmission | |
| CN112677036A (en) | Self-balancing vibration suppression mechanism for air bag tool | |
| CN108723691B (en) | Correction equipment and correction method for spoke type hub | |
| CN221054290U (en) | Grinding equipment main shaft seal structure and grinding equipment | |
| CN112324712A (en) | Flow regulating structure for centrifugal fan | |
| CN216869585U (en) | Single-shaft speed turntable | |
| CN220022552U (en) | Collector ring mounting device | |
| CN220470319U (en) | Low-vibration mute fan | |
| CN215762766U (en) | Eccentric shaft applied to yaw and pitching forced vibration test device | |
| CN114088046B (en) | Aeroengine detection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |