CN210268976U - Large-torque diesel engine starting resistance moment measuring device - Google Patents
Large-torque diesel engine starting resistance moment measuring device Download PDFInfo
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- CN210268976U CN210268976U CN201921076930.XU CN201921076930U CN210268976U CN 210268976 U CN210268976 U CN 210268976U CN 201921076930 U CN201921076930 U CN 201921076930U CN 210268976 U CN210268976 U CN 210268976U
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Abstract
The utility model belongs to the technical field of the diesel engine is made, a big moment of torsion diesel engine starts moment of resistance measuring device is proposed. The starting resistance torque measuring device of the high-torque diesel engine is provided with a driving gear meshed and combined with a flywheel gear ring of the diesel engine; one side of the driving gear is connected with a gear transmission shaft which is coaxially arranged with the driving gear; the gear transmission shaft is connected with the torque and rotating speed measuring instrument through a coupling I; the coupling I and the torque rotating speed measuring instrument and the coupling I and the gear transmission shaft are respectively and elastically connected into a whole through elastic connecting pieces I; a bearing shell assembly is sleeved on the gear transmission shaft; the torque and rotating speed measuring instrument is connected to an output shaft I of the driving motor through a coupling II; the coupling II and the torque and rotating speed measuring instrument and the coupling II and the output shaft I are respectively and elastically connected into a whole through elastic coupling pieces II. The utility model discloses measuring device's reliability has effectively been improved.
Description
Technical Field
The utility model belongs to the technical field of the diesel engine is made, concretely relates to big moment of torsion diesel engine starts moment of resistance measuring device.
Background
The starting performance is an important index for measuring the performance of the diesel engine; whether starting the motor or other starting methods, the resistive torque originating from the inside of the engine must first be overcome; therefore, the starting equipment can be better matched only by accurately obtaining the starting resistance moment of the diesel engine; the starting resistance moment mainly comes from the friction resistance in the diesel engine, and the friction resistance is mainly influenced by the factors of lubricating oil viscosity between piston rings, friction between a piston ring and a cylinder sleeve, friction between a piston skirt and the cylinder sleeve, friction of a gas distribution system, friction of a cooling water pump and a lubricating oil pump, bearing friction and the like; the influence factors of the starting resisting moment are complex and cannot be accurately obtained through a calculation method, and at present, the starting resisting moment is mainly measured by the following three methods in the industry:
1. an electric dynamometer with a dragging function is adopted.
2. And establishing a starting resistance moment mathematical model for calculation based on the data acquired by the starting motor.
3. The starting resistance testing system consists of equipment and instruments such as a variable frequency motor, a variable speed gear, a torque tachometer, a data acquisition system and the like.
For a high power diesel engine, it is difficult to find an electric dynamometer with sufficient power. The method is adopted in some known patents, such as patent 201010049575.4, namely an engine starting resisting moment test method, but the approximate calculation method is difficult to truly reflect the resisting moment state of the engine, and the method is based on the starting motor collected data, and if the type selection of the starting motor is not completed yet for the newly developed engine, the test method is not feasible.
Therefore, a starting resistance testing system consisting of equipment and instruments such as a variable frequency motor, a speed change gear, a torque tachometer, a data acquisition system and the like is an ideal choice, and no relevant patent in the aspect of diesel engine resistance torque testing based on the testing method exists at present.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model aims at providing a big moment of torsion diesel engine starts moment of resistance measuring device.
The utility model discloses an accomplish above-mentioned utility model purpose and adopt following technical scheme:
a high-torque diesel engine starting resistance moment measuring device is provided with a driving gear meshed with a flywheel gear ring of a diesel engine; one side of the driving gear is connected with a gear transmission shaft which is coaxially arranged with the driving gear; the gear transmission shaft is a stepped shaft, a large-diameter section shaft of the stepped shaft is fixedly connected with the driving gear, and a small-diameter section shaft is connected with the torque and rotation speed measuring instrument through a coupling I; the coupling I and the torque and rotating speed measuring instrument and the coupling I and the gear transmission shaft are respectively and elastically connected into a whole through elastic connecting pieces I; a bearing shell assembly is sleeved on the large-diameter section shaft of the gear transmission shaft; the bearing shell assembly is provided with a bearing shell, and the bearing shell is a hollow cylinder with a plane bottom surface; the central through hole of the bearing shell is provided with a through hole I positioned in the middle, through holes II positioned at two ends of the through hole I and larger than the through hole I in diameter, and through holes III positioned on the outer sides of the two through holes II and communicated with the corresponding through holes II; the diameter of the through hole III is larger than that of the through hole II; a bearing bush in interference fit with the through hole I is arranged in the bearing shell; the bearing bushes are symmetrically arranged at two ends of the through hole I; the inner ring of the bearing bush is in clearance fit with the gear transmission shaft; a shaft sealing ring with an outer ring in interference fit with the inner wall surface of the through hole III is arranged in the through hole III, and an inner hole of the shaft sealing ring is in interference fit with the gear transmission shaft; the torque and rotating speed measuring instrument is connected to an output shaft I of the driving motor through a coupling II; the coupling II and the torque and rotating speed measuring instrument and the coupling II and the output shaft I are respectively and elastically connected into a whole through elastic coupling pieces II; the bearing shell is supported on the bearing shell bracket; the driving motor is arranged on the driving motor bracket; the bearing shell is coaxially arranged with the driving motor; the driving motor drives the torque rotating speed measuring instrument, the gear transmission shaft and the driving gear to rotate through the coupling I and the coupling II, the driving gear drags the flywheel gear ring at a certain transmission ratio to drive the diesel engine to run until the diesel engine reaches the ignition rotating speed, and the diesel engine is started; in the process from the start of the diesel engine to the start, the torque and rotation speed measuring instrument senses the torque and rotation speed signals transmitted by the torque and rotation speed measuring instrument, and the controller and the signal collector really output a relation curve of the diesel engine rotation speed and the starting resisting moment by considering the speed ratio relation between the driving gear and the flywheel gear ring and the friction loss between the torque and rotation speed measuring instrument and the flywheel gear ring intermediate device, so as to complete the measurement of the starting resisting moment of the diesel engine.
A counter bore which is in clearance fit with the gear transmission shaft is arranged on the connecting end surface of the driving gear and the gear transmission shaft; the end face of the driving gear is provided with a plurality of through holes which are uniformly distributed along the axis of the gear; the gear transmission shaft is provided with threaded holes which are in one-to-one correspondence with the through holes on the driving gear; a gear transmission shaft with one end positioned in the counter bore of the driving gear is connected with the driving gear into a whole through a hexagon socket head cap screw;
the upper part of the bearing shell is provided with a plurality of radial stepped holes, the upper parts of the radial stepped holes are threaded holes, and the lower parts of the radial stepped holes are unthreaded holes; the two radial stepped holes positioned at the two ends are communicated with the through hole II; the other radial stepped holes are communicated with the through hole I; the radial stepped hole is arranged in order that one end of the hose is screwed into the radial stepped hole through a threaded pipe joint, and the other end of the hose is led into the oil supply device to introduce lubricating oil to lubricate the bearing bush.
The torque and rotating speed measuring instrument is used for measuring the rotating speed and the transmission torque of a shafting and is provided with an output shaft II and an output shaft III; the output shafts II and III are correspondingly arranged on the left side and the right side of the torque and rotation speed measuring instrument; the torque and rotating speed measuring instrument is connected with the coupling II through an output shaft II; the torque and rotating speed measuring instrument is connected with the coupling I through an output shaft III.
The utility model provides a big moment of torsion diesel engine starts resistance moment measuring device, drive gear drive flywheel ring gear operation with certain velocity ratio, required moment of torsion is reduced by a wide margin than electric dynamometer, the reliability of driving motor and drive arrangement is ensured more easily; in the working process of the driving motor, the transmission torque is constantly changed, and meanwhile, coaxiality errors also exist between the gear transmission shaft and the output shaft of the driving motor, and the factors can cause the measuring device to generate periodically changed torsional deformation, so that the reliability of the measuring device can be reduced; in the starting resistance moment measuring device of the large-torque diesel engine, a plurality of elastic connecting pieces are respectively arranged on a coupling II between a torque rotating speed measuring instrument and a driving motor and a coupling I between the torque rotating speed measuring instrument and a driving gear; the elastic connecting sheet can absorb the torsional deformation, and the reliability of the measuring device is effectively improved.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the assembly of the middle driving gear and the bearing housing according to the present invention;
FIG. 3 is a schematic structural diagram of a coupling I according to the present invention;
FIG. 4 is a schematic structural diagram of a coupling II according to the present invention;
FIG. 5 is a schematic view of the fastening of the shaft couplings I and II of the present invention;
fig. 6 is a schematic structural diagram of the middle driving motor bracket of the present invention.
In the figure: 1. a flywheel ring gear; 2. a drive gear; 3. a bearing housing support; 4. a drive motor support; 5. a drive motor; 6. a bearing housing; 7. a bearing bush; 8. a shaft seal ring; 9. an output shaft I; 10. a coupling II; 11. an elastic connecting piece II; 12. an output shaft II; 13. a torque and rotation speed measuring instrument; 14. an output shaft III; 15. a coupling I; 16. an elastic connecting piece I; 17. a gear transmission shaft; 18. a radial step hole I; 19 radial step holes II; 20. and a radial step hole III. 21. A socket head cap screw; 22. and locking the screw.
Detailed Description
The invention is described in connection with the accompanying drawings and the embodiments:
as shown in figure 1, the starting resistant moment measuring device of the large-torque diesel engine is provided with a driving gear 2 meshed and combined with a flywheel gear ring 1 of the diesel engine; one side of the driving gear 2 is connected with a gear transmission shaft 17 which is coaxially arranged with the driving gear; with reference to fig. 2, the gear transmission shaft 17 is a stepped shaft, a large diameter section of the stepped shaft is fixedly connected with the driving gear 2, and a small diameter section of the stepped shaft is connected with the torque and rotation speed measuring instrument 13 through a coupling i 15; a counter bore which is in clearance fit with the gear transmission shaft is arranged on the connecting end surface of the driving gear and the gear transmission shaft; six through holes are uniformly distributed along the axis of the gear on the end surface of the driving gear 2; the gear transmission shaft is provided with threaded holes which are in one-to-one correspondence with the through holes on the driving gear; a gear transmission shaft with one end positioned in the counter bore of the driving gear is connected with the driving gear into a whole through an inner hexagon screw 21;
referring to fig. 3, the coupling i 15 and the torque and rotation speed measuring instrument 13, and the coupling i 15 and the gear transmission shaft 17 are respectively and elastically connected into a whole through elastic coupling pieces i 16; a bearing shell assembly is sleeved on the large-diameter section shaft of the gear transmission shaft 17; referring to fig. 2, the bearing housing assembly has a bearing housing 6, and the bearing housing 6 is a hollow cylinder with a plane bottom surface; the upper part of the bearing shell is provided with a plurality of radial stepped holes, the upper parts of the radial stepped holes are threaded holes, and the lower parts of the radial stepped holes are unthreaded holes; the two radial stepped holes positioned at the two ends are communicated with the through hole II; the other radial stepped holes are communicated with the through hole I, and the purpose of arranging the radial stepped holes is to screw one end of a hose into the radial stepped holes through a threaded pipe, and the other end of the hose is introduced into an oil supply device to introduce lubricating oil to lubricate the bearing bush; the central through hole of the bearing shell 6 is provided with a through hole I positioned in the middle, through holes II positioned at two ends of the through hole I and larger than the through hole I in diameter, and through holes III positioned at the outer sides of the two through holes II and communicated with the corresponding through holes II; the diameter of the through hole III is larger than that of the through hole II; a bearing bush 7 in interference fit with the through hole I is arranged in the bearing shell; the bearing bushes 7 are symmetrically arranged at two ends of the through hole I; the inner ring of the bearing bush 7 is in clearance fit with the gear transmission shaft 17; a shaft sealing ring 8 with an outer ring in interference fit with the inner wall surface of the through hole III is arranged in the through hole III, and an inner hole of the shaft sealing ring 8 is in interference fit with a gear transmission shaft 17; the torque and rotating speed measuring instrument 13 is connected to an output shaft I9 of the driving motor 5 through a coupling II 10; with the combination of FIG. 4, the coupling II 10 and the torque and speed measuring instrument 13, and the coupling II 10 and the output shaft I9 are respectively and elastically connected into a whole through elastic coupling pieces II 11; the bearing shell support 6 is arranged on the bearing shell bracket 3; the driving motor 5 is arranged on the driving motor bracket 4; the bearing shell 6 and the driving motor 5 are coaxially arranged; the driving motor 5 rotates through a coupling I10, a coupling II 15, a torque rotating speed measuring instrument 13, a gear transmission shaft 17 and a driving gear 2, and the driving gear 2 drags the flywheel gear ring 1 in a certain transmission ratio to drive the diesel engine to run until the diesel engine reaches the ignition rotating speed, so that the diesel engine is started; in the process from the start of the diesel engine to the start, a torque and rotation speed measuring instrument 13 (manufacturer: Beijing Zhongkekun technology Co., Ltd., model: KR-803-.
The torque and rotating speed measuring instrument is used for measuring the rotating speed and the transmission torque of a shafting and is provided with an output shaft II and an output shaft III; the output shafts II and III are correspondingly arranged on the left side and the right side of the torque and rotation speed measuring instrument; the torque and rotating speed measuring instrument is connected with the coupling II through an output shaft II; the torque and rotating speed measuring instrument is connected with the coupling I through an output shaft III.
Claims (4)
1. The utility model provides a big moment of torsion diesel engine starting resistance moment measuring device which characterized in that: the starting resisting moment measuring device is provided with a driving gear meshed and combined with a flywheel gear ring of the diesel engine; one side of the driving gear is connected with a gear transmission shaft which is coaxially arranged with the driving gear; the gear transmission shaft is a stepped shaft, a large-diameter section shaft of the stepped shaft is fixedly connected with the driving gear, and a small-diameter section shaft is connected with the torque and rotation speed measuring instrument through a coupling I; the coupling I and the torque and rotating speed measuring instrument and the coupling I and the gear transmission shaft are respectively and elastically connected into a whole through elastic connecting pieces I; a bearing shell assembly is sleeved on the large-diameter section shaft of the gear transmission shaft; the bearing shell assembly is provided with a bearing shell, and the bearing shell is a hollow cylinder with a plane bottom surface; the central through hole of the bearing shell is provided with a through hole I positioned in the middle, through holes II positioned at two ends of the through hole I and larger than the through hole I in diameter, and through holes III positioned on the outer sides of the two through holes II and communicated with the corresponding through holes II; the diameter of the through hole III is larger than that of the through hole II; a bearing bush in interference fit with the through hole I is arranged in the bearing shell; the bearing bushes are symmetrically arranged at two ends of the through hole I; the inner ring of the bearing bush is in clearance fit with the gear transmission shaft; a shaft sealing ring with an outer ring in interference fit with the inner wall surface of the through hole III is arranged in the through hole III, and an inner hole of the shaft sealing ring is in interference fit with the gear transmission shaft; the torque and rotating speed measuring instrument is connected to an output shaft I of the driving motor through a coupling II; the coupling II and the torque and rotating speed measuring instrument and the coupling II and the output shaft I are respectively and elastically connected into a whole through elastic coupling pieces II; the bearing shell is supported on the bearing shell bracket; the driving motor is arranged on the driving motor bracket; the bearing shell and the driving motor are coaxially arranged.
2. A large torque diesel engine starting drag torque measuring apparatus as set forth in claim 1, wherein: a counter bore which is in clearance fit with the gear transmission shaft is arranged on the connecting end surface of the driving gear and the gear transmission shaft; the end face of the driving gear is provided with a plurality of through holes which are uniformly distributed along the axis of the gear; the gear transmission shaft is provided with threaded holes which are in one-to-one correspondence with the through holes on the driving gear; and a gear transmission shaft with one end positioned in the counter bore of the driving gear is connected with the driving gear into a whole through an inner hexagon screw.
3. A large torque diesel engine starting drag torque measuring apparatus as set forth in claim 1, wherein: the upper part of the bearing shell is provided with a plurality of radial stepped holes, the upper parts of the radial stepped holes are threaded holes, and the lower parts of the radial stepped holes are unthreaded holes; the two radial stepped holes positioned at the two ends are communicated with the through hole II; the other radial stepped holes are communicated with the through hole I; the radial stepped hole is arranged in order that one end of the hose is screwed into the radial stepped hole through a threaded pipe joint, and the other end of the hose is led into the oil supply device to introduce lubricating oil to lubricate the bearing bush.
4. A large torque diesel engine starting drag torque measuring apparatus as set forth in claim 1, wherein: the torque and rotating speed measuring instrument is used for measuring the rotating speed and the transmission torque of a shafting and is provided with an output shaft II and an output shaft III; the output shafts II and III are correspondingly arranged on the left side and the right side of the torque and rotation speed measuring instrument; the torque and rotating speed measuring instrument is connected with the coupling II through an output shaft II; the torque and rotating speed measuring instrument is connected with the coupling I through an output shaft III.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921076930.XU CN210268976U (en) | 2019-07-11 | 2019-07-11 | Large-torque diesel engine starting resistance moment measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921076930.XU CN210268976U (en) | 2019-07-11 | 2019-07-11 | Large-torque diesel engine starting resistance moment measuring device |
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| Publication Number | Publication Date |
|---|---|
| CN210268976U true CN210268976U (en) | 2020-04-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921076930.XU Active CN210268976U (en) | 2019-07-11 | 2019-07-11 | Large-torque diesel engine starting resistance moment measuring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110319959A (en) * | 2019-07-11 | 2019-10-11 | 河南柴油机重工有限责任公司 | A kind of large torque diesel engine starting moment of resistance measuring device |
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2019
- 2019-07-11 CN CN201921076930.XU patent/CN210268976U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110319959A (en) * | 2019-07-11 | 2019-10-11 | 河南柴油机重工有限责任公司 | A kind of large torque diesel engine starting moment of resistance measuring device |
| CN110319959B (en) * | 2019-07-11 | 2023-12-01 | 河南柴油机重工有限责任公司 | Starting resistance moment measuring device for large-torque diesel engine |
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