CN211234263U - Engine pedestal mounting and centering device - Google Patents
Engine pedestal mounting and centering device Download PDFInfo
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- CN211234263U CN211234263U CN202020135578.9U CN202020135578U CN211234263U CN 211234263 U CN211234263 U CN 211234263U CN 202020135578 U CN202020135578 U CN 202020135578U CN 211234263 U CN211234263 U CN 211234263U
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- dial indicator
- coaxiality
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Abstract
The utility model belongs to the technical field of engine testing, in particular to an engine bench mounting and centering device, which comprises a base and a male die mounted on an engine output shaft, wherein the base is provided with a supporting seat, and the supporting seat is rotatably connected with a connecting shaft; one end of the connecting shaft is provided with a female die which can be matched with the male die, one side of the female die is provided with a coaxiality tester, and the top of the female die is provided with a parallelism tester; the coaxiality tester is a coaxiality dial indicator or a coaxiality dial indicator, and the parallelism tester is a parallelism dial indicator or a parallelism dial indicator. In this scheme, fixed axiality tester and depth of parallelism tester on the die respectively, carry out the engine in step and measure the check with the axiality, this centering device is with low costs, easy operation, strong adaptability can effectively improve engine test bench and build work efficiency and centering precision.
Description
Technical Field
The utility model belongs to the technical field of the engine test, concretely relates to engine rack installation centering device.
Background
During the development of engine products, enterprises need to develop and calibrate the engine performance in an engine bench test room, verify the reliability, and put the engine on the market formally after ensuring that all indexes of the engine meet corresponding technical indexes, and the engine bench test is an important technical guarantee for the product research and development.
The dynamometer in the engine bench test room is used for absorbing the output work of the crankshaft end of the engine and synchronously realizing the accurate control of the performance parameters of the engine. The dynamometer is connected with an engine test sample through a transmission shaft, the bench is built to have strict technical requirements on the alignment of the parallelism and the coaxiality of the output end of the engine crankshaft and the input end of the dynamometer rotor, otherwise, the fatigue damage of a rotating shaft system is caused due to excessive torsional vibration in the bench test process, the mechanical damage is finally caused, and even more serious safety accidents can occur. The engine bench is built, the most important work is the centering of the engine, and the building requirement of the test bench can be met only by repeatedly performing centering iteration of parallelism and coaxiality in many times, so that the centering process consumes time and labor.
SUMMERY OF THE UTILITY MODEL
The utility model provides an engine rack installation centering device to solve the problem such as current engine rack test centering transposition centering precision is low, centering efficiency is not high and with high costs.
In order to achieve the above purpose, the utility model discloses a scheme does: the centering device for mounting the engine rack comprises a base and a male die mounted on an output shaft of an engine, wherein a supporting seat is arranged on the base, and a connecting shaft is rotatably connected to the supporting seat; one end of the connecting shaft is provided with a female die which can be matched with the male die, one side of the female die is provided with a coaxiality tester, and the top of the female die is provided with a parallelism tester; the coaxiality tester is a coaxiality dial indicator or a coaxiality dial indicator, and the parallelism tester is a parallelism dial indicator or a parallelism dial indicator.
The working principle and the beneficial effects of the scheme are as follows: before the engine is required to be connected with the dynamometer, the centering device of the scheme is firstly utilized to perform simulated centering, and after the simulated centering is completed, the engine is connected with the dynamometer. In this scheme, fixed axiality tester and the axiality tester respectively on the die, can carry out the engine in step and align the axiality and measure the check, use this centering device with low costs, easy operation, strong adaptability can effectively improve engine test bench and build work efficiency and centering precision.
Optionally, the supporting seat includes a front bearing seat and a rear bearing seat respectively located on two sides of the base, and the connecting shaft sequentially penetrates through the front bearing seat and the rear bearing seat. The front bearing seat and the rear bearing seat have a good supporting effect on the connecting shaft, and the connecting shaft can rotate better.
Optionally, the connecting shaft is provided as a telescopic shaft, and a limiting ring for fixing the extension length of the telescopic shaft is arranged on the telescopic shaft. The connecting rod is arranged as a telescopic shaft, so that the axial limit stroke of the telescopic shaft is 300mm, and the telescopic shaft is suitable for transmission shafts with different lengths.
Optionally, the connecting shaft comprises a first connecting rod and a second connecting rod slidably connected in the first connecting rod; the limiting ring is provided with a positioning threaded hole, the first connecting rod is provided with a positioning through hole matched with the positioning threaded hole, and the positioning threaded hole is in threaded connection with a positioning piece.
Optionally, a concave cavity matched with the male die is formed in the female die; the coaxiality tester is a coaxiality dial indicator, a first mounting cylinder for fixing the coaxiality dial indicator is arranged on one side of the female die, and the first mounting cylinder is communicated with the concave cavity; a measuring rod of the coaxiality dial indicator extends into the first mounting cylinder and can be contacted with the end face of the male die; a first threaded hole is formed in the first mounting cylinder, and a first fastener used for fixing the coaxiality dial indicator is connected to the first threaded hole in a threaded mode. In this scheme, the axiality tester chooses the axiality percentage table for use, and the axiality percentage table can be better satisfies the actual test demand. When the coaxiality dial indicator needs to be fixed on the female die, the fixing rod and the measuring rod of the coaxiality dial indicator penetrate through the first mounting cylinder, then the first fastening piece is in threaded connection with the first threaded hole, the end portion of the first fastening piece is enabled to abut against the fixing rod of the dial indicator, and the coaxiality dial indicator can be well mounted and fixed.
Optionally, the parallelism tester is a parallelism dial indicator, a second mounting cylinder for fixing the parallelism dial indicator is arranged at the top of the female die, and the second mounting cylinder is communicated with the concave cavity; a measuring rod of the parallelism dial indicator extends into the second mounting cylinder and can be contacted with the circumferential surface of the male die; a second threaded hole is formed in the second mounting cylinder, and a second fastener used for fixing the parallelism dial indicator is connected to the second threaded hole in a threaded mode. When the parallelism dial indicator needs to be fixed on the female die, the fixing rod and the measuring rod of the parallelism dial indicator penetrate through the second mounting cylinder, then the second fastener is in threaded connection with the second threaded hole, the end part of the second fastener is enabled to be tightly abutted against the fixing rod of the parallelism dial indicator, and the parallelism dial indicator can be fixedly mounted well.
Optionally, the base is provided with a plurality of mounting holes for fixing the base. The installation hole is arranged, so that the base can be fixedly installed well.
Optionally, a manual crank is arranged on the connecting shaft. The manual crank is arranged to facilitate driving the connecting shaft to rotate.
Optionally, the male die is in clearance fit with the female die, and the male die is in clearance fit with the female die by 0.3-0.6 mm. The male die and the female die are in clearance fit with each other by 0.3-0.6mm, so that the precision requirement of early centering is ensured.
Optionally, the male die is provided with four mounting counter bores. The installation counter bore is arranged, so that the head of the fastener can be completely sunk into the installation counter bore when the male die is fixed, the surface of the male die is ensured to be smooth, and the coaxiality test can be normally carried out.
Drawings
Fig. 1 is a schematic structural view of an engine mount centering device according to a first embodiment of the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
fig. 3 is a cross-sectional view of a connecting rod in an engine mount centering device according to an embodiment of the present invention.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: the device comprises an engine 10, a base 20, a front bearing seat 21, a rear bearing seat 22, a connecting shaft 30, a manual crank 31, a first connecting rod 32, a second connecting rod 33, a limiting ring 40, a male die 50, a female die 60, a coaxiality tester 71 and a parallelism tester 70.
Example one
The embodiment is basically as shown in fig. 1 and fig. 2: the engine rack mounting and centering device comprises a base 20, a connecting shaft 30 and a male die 50 fixedly mounted on an output shaft of an engine 10, wherein four mounting counter bores are formed in the male die 50; the base 20 is provided with 8 mounting holes for fixing the base 20.
Be equipped with the supporting seat on base 20, in this scheme, the supporting seat includes front bearing seat 21 and rear bearing seat 22, and front bearing seat 21 and rear bearing seat 22 are fixed mounting respectively in base 20's the left and right sides. The connecting shaft 30 passes through the front bearing seat 21 and the rear bearing seat 22 and is rotatably connected to the front bearing seat 21 and the rear bearing seat 22. In this embodiment, the connecting shaft 30 is provided as a telescopic shaft, and a limit ring 40 is provided on the telescopic shaft. The connecting shaft 30 includes a first connecting rod 32 and a second connecting rod 33 slidably connected in the first connecting rod 32, and specifically, as shown in fig. 3, a sliding slot is formed in the first connecting rod 32, and one side of the second connecting rod 33 extends into the sliding slot and can slide along the sliding slot. The limiting ring 40 is fixed on the first connecting rod 32 and located between the front bearing seat 21 and the rear bearing seat 22, a positioning threaded hole is formed in the limiting ring 40, a positioning through hole capable of being matched with the positioning threaded hole is formed in the first connecting rod 32, and a positioning piece is connected to the positioning threaded hole in a threaded manner, wherein the positioning piece is a screw in the embodiment. When the first connecting rod 32 and the second connecting rod 33 need to be fixed, the positioning piece is screwed on the positioning threaded hole, and the end part of the positioning piece is abutted against the surface of the second connecting rod 33.
The left end of the connecting shaft 30 is rotatably connected with a female die 60, the female die 60 is provided with a concave cavity matched with the male die 50, the male die 50 is in clearance fit with the female die 60 by 0.3-0.6mm, and in the embodiment, the male die 50 is in clearance fit with the female die 60 by 0.5 mm. A manual crank 31 is fixedly arranged at the right end of the connecting shaft 30. One side of die 60 is equipped with axiality tester 71, and the top of die 60 is equipped with parallelism tester 70, and in this embodiment, axiality tester 71 is the axiality percentage table, is fixed with the first installation section of thick bamboo that is used for fixed axiality percentage table on the right side of die 60, and first installation section of thick bamboo and cavity intercommunication, the dead lever and the graduated flask of axiality percentage table all stretch into first installation section of thick bamboo, and the graduated flask of axiality percentage table can and the terminal surface contact of terrace die 50. Open on the first installation section of thick bamboo and have first screw hole, threaded connection has first fastener on the first screw hole, and the one end of first fastener can support on the dead lever of axiality percentage table. The parallelism tester 70 in this embodiment is a parallelism dial indicator, a second mounting cylinder for fixing the parallelism dial indicator is fixed at the top of the female die 60, and the second mounting cylinder is communicated with the concave cavity; the fixed rod and the measuring rod of the parallelism dial indicator extend into the second mounting cylinder, and the measuring rod of the parallelism dial indicator can be in contact with the circumferential surface of the male die 50. A second threaded hole is formed in the second mounting cylinder, a second fastener is connected to the second threaded hole in a threaded mode, and one end of the second fastener can be abutted to a fixing rod of the parallelism percentage indicator. In this embodiment, the first fastener and the second fastener are both screws.
Example two
The present embodiment is different from the first embodiment in that: in the present embodiment, the coaxiality tester 71 is a coaxiality dial gauge, and the parallelism tester 70 is a parallelism dial gauge.
The above description is only an example of the present invention, and the common general knowledge of the known specific structures and characteristics of the embodiments is not described herein. It should be pointed out that to those skilled in the art, without departing from the structure of the present invention, a plurality of modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the utility of the present invention.
Claims (10)
1. Engine rack installation centering device, its characterized in that: the device comprises a base and a male die arranged on an output shaft of an engine, wherein a supporting seat is arranged on the base, and a connecting shaft is rotatably connected to the supporting seat; one end of the connecting shaft is provided with a female die which can be matched with the male die, one side of the female die is provided with a coaxiality tester, and the top of the female die is provided with a parallelism tester; the coaxiality tester is a coaxiality dial indicator or a coaxiality dial indicator, and the parallelism tester is a parallelism dial indicator or a parallelism dial indicator.
2. The engine mount centering device of claim 1, wherein: the supporting seat comprises a front bearing seat and a rear bearing seat which are respectively positioned on two sides of the base, and the connecting shaft sequentially penetrates through the front bearing seat and the rear bearing seat.
3. The engine mount centering device of claim 2, wherein: the connecting shaft is set as a telescopic shaft, and a limiting ring used for fixing the extension length of the telescopic shaft is arranged on the telescopic shaft.
4. The engine mount centering device of claim 3, wherein: the connecting shaft comprises a first connecting rod and a second connecting rod which is connected in the first connecting rod in a sliding manner; the limiting ring is provided with a positioning threaded hole, the first connecting rod is provided with a positioning through hole matched with the positioning threaded hole, and the positioning threaded hole is in threaded connection with a positioning piece.
5. The engine stand mounting and centering device according to any one of claims 1 to 4, wherein: the female die is provided with a concave cavity matched with the male die; the coaxiality tester is a coaxiality dial indicator, a first mounting cylinder for fixing the coaxiality dial indicator is arranged on one side of the female die, and the first mounting cylinder is communicated with the concave cavity; a measuring rod of the coaxiality dial indicator extends into the first mounting cylinder and can be contacted with the end face of the male die; a first threaded hole is formed in the first mounting cylinder, and a first fastener used for fixing the coaxiality dial indicator is connected to the first threaded hole in a threaded mode.
6. The engine mount centering device of claim 5, wherein: the parallelism tester is a parallelism dial indicator, a second mounting cylinder for fixing the parallelism dial indicator is arranged at the top of the female die, and the second mounting cylinder is communicated with the concave cavity; a measuring rod of the parallelism dial indicator extends into the second mounting cylinder and can be contacted with the circumferential surface of the male die; a second threaded hole is formed in the second mounting cylinder, and a second fastener used for fixing the parallelism dial indicator is connected to the second threaded hole in a threaded mode.
7. The engine mount centering device of claim 6, wherein: the base is provided with a plurality of mounting holes for fixing the base.
8. The engine mount centering device of claim 6, wherein: and a manual crank is arranged on the connecting shaft.
9. The engine mount centering device of claim 6, wherein: the male die is in clearance fit with the female die, and the male die is in clearance fit with the female die by 0.3-0.6 mm.
10. The engine mount centering device of claim 6, wherein: four mounting counter bores are formed in the male die.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020135578.9U CN211234263U (en) | 2020-01-20 | 2020-01-20 | Engine pedestal mounting and centering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020135578.9U CN211234263U (en) | 2020-01-20 | 2020-01-20 | Engine pedestal mounting and centering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211234263U true CN211234263U (en) | 2020-08-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020135578.9U Active CN211234263U (en) | 2020-01-20 | 2020-01-20 | Engine pedestal mounting and centering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211234263U (en) |
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2020
- 2020-01-20 CN CN202020135578.9U patent/CN211234263U/en active Active
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