CN212391216U - Diesel engine starting hydraulic motor test bench - Google Patents
Diesel engine starting hydraulic motor test bench Download PDFInfo
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- CN212391216U CN212391216U CN202021118692.7U CN202021118692U CN212391216U CN 212391216 U CN212391216 U CN 212391216U CN 202021118692 U CN202021118692 U CN 202021118692U CN 212391216 U CN212391216 U CN 212391216U
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Abstract
The utility model relates to a diesel engine starts hydraulic motor test field, a diesel engine starts hydraulic motor testboard is disclosed, including the testboard main part, the mesa top of testboard main part is equipped with the unit head, be equipped with the transmission shaft in the unit head, the one end of transmission shaft is equipped with the transmission flywheel, the other end of transmission shaft even has torque speed sensor through the shaft coupling, torque speed sensor's the other end even has torque brake through the shaft coupling, be equipped with at least one test position on the mesa, transmission flywheel and the motor gear who places start hydraulic motor on test position mesh, the mesa below is equipped with accelerating motor, accelerating motor's output shaft even has electromagnetic clutch, electromagnetic clutch's the other end even has accelerating gear, the position that the mesa is located transmission flywheel below is equipped with the hole. The utility model discloses the diesel engine starts hydraulic motor testboard can carry out effective test to starting hydraulic motor, effectively improves and produces property ability, prevents that the problem product from flowing.
Description
Technical Field
The utility model relates to a diesel engine starts hydraulic motor test field, concretely relates to diesel engine starts hydraulic motor testboard.
Background
When the diesel engine is started, the pinion of the hydraulic motor is started to drive the flywheel to rotate, so that the piston is compressed, the flywheel reaches a certain rotating speed after compression ignition, after the rotating speed is exceeded, the pinion of the hydraulic motor is disengaged through the one-way screw mechanism, and the whole starting process is finished.
At present, most of starting hydraulic motors of domestic diesel engines depend on import, corresponding detection equipment is needed if domestic production needs to be realized, the torque and the rotating speed of the starting hydraulic motors are synchronously monitored, various strengths of gears and shafts are verified, particularly, durability test needs to be carried out on fatigue strength, and the series of targets are realized by using a test bench, but the starting hydraulic motors are still in a missing state at present.
Disclosure of Invention
The utility model aims at providing a diesel engine starts hydraulic motor testboard to the not enough of above-mentioned technique, can carry out effective test to starting hydraulic motor, effectively improve product property ability, prevent that the problem product from flowing.
In order to achieve the purpose, the test board for starting the hydraulic motor of the diesel engine, which is designed by the utility model, comprises a test board main body, a power head is arranged above the table board of the test board main body, a transmission shaft is arranged in the power head, a transmission flywheel is arranged at one end of the transmission shaft, the other end of the transmission shaft is connected with a torque and rotation speed sensor through a coupler, the other end of the torque and rotation speed sensor is connected with a torque brake through a coupler, at least one test position is arranged on the table-board, the transmission flywheel is meshed with a motor gear which is arranged on the test position and used for starting a hydraulic motor, an accelerating motor is arranged below the table board, an output shaft of the accelerating motor is connected with an electromagnetic clutch, the other end of the electromagnetic clutch is connected with an accelerating gear, a hole is formed in the position, below the transmission flywheel, of the table top, and the accelerating gear penetrates through the hole and is meshed with the transmission flywheel.
Preferably, two test positions are arranged on the table top and are respectively positioned at two ends of the transmission flywheel, motor gears of the starting hydraulic motors on the two test positions are meshed with the transmission flywheel, and the two starting hydraulic motors can be tested simultaneously.
Preferably, the gear ratio of the transmission flywheel to the motor for starting the hydraulic motor is 4.5:1, and the gear ratio of the accelerating gear to the transmission flywheel is 13: 9.
Compared with the prior art, the utility model, have following advantage:
1. can carry out effective test to starting hydraulic motor, effectively improve product property ability, prevent that the problem product from flowing out.
Drawings
Fig. 1 is the utility model discloses diesel engine starts hydraulic motor testboard's schematic structure diagram.
The components in the figures are numbered as follows:
the test bench comprises a test bench main body 1, a table board 2, a power head 3, a transmission shaft 4, a transmission flywheel 5, a coupler 6, a torque speed sensor 7, a coupler 6, a torque brake 8, a test position 9, a starting hydraulic motor 10, an accelerating motor 11, an electromagnetic clutch 12 and an accelerating gear 13.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and specific embodiments.
As shown in figure 1, the utility model discloses a diesel engine starting hydraulic motor testboard, including testboard main body 1, the top of the table-board 2 of testboard main body 1 is equipped with power head 3, the inside of power head 3 is equipped with transmission shaft 4, one end of transmission shaft 4 is equipped with transmission flywheel 5, the other end of transmission shaft 4 is connected with torque speed sensor 7 through coupling 6, the other end of torque speed sensor 7 is connected with torque brake 8 through coupling 6, table-board 2 is equipped with two test positions 9, two test positions 9 are respectively located at both ends of transmission flywheel 5, the motor gears of starting hydraulic motors 10 on two test positions 9 are all meshed with transmission flywheel 5, the bottom of table-board 2 is equipped with accelerating motor 11, the output shaft of accelerating motor 11 is connected with electromagnetic clutch 12, the other end of electromagnetic clutch 12 is connected with accelerating gear 13, the position of, the accelerating gear 13 is meshed with the driving flywheel 5 through the hole.
In the present embodiment, the gear ratio of the transmission flywheel 5 to the motor for starting the hydraulic motor 10 is 4.5:1, and the gear ratio of the acceleration gear 13 to the transmission flywheel 5 is 13:9, specifically, in the present embodiment, the gear of the motor for starting the hydraulic motor 10 is 12 teeth, the transmission flywheel 5 is 54 teeth, and the acceleration gear 13 is 78 teeth.
When the hydraulic starting device is used, the action principle of a diesel engine is simulated, the starting hydraulic motor 10 is installed on the test position 9, test data of torque and rotating speed are obtained through the torque rotating speed sensor 7, and the torque brake 8 arranged subsequently can realize the change of different torques by setting different voltages and simulate the friction torque and the load torque during starting.
According to a starting torque calculation formula, motor torque-static torque is integral moment of inertia x angular acceleration, so when a load is unchanged and a shaft rotates at a constant speed, the angular acceleration is 0, the motor torque is static torque and theoretically equal to load given torque, the torque measured by a sensor is converted (divided by 4.5) into motor output torque, a process is carried out when the load is constant and the torque is constant, and the time required for the motor torque to reach a certain value can be observed through timing.
The measurement procedure of this example is as follows:
1. starting the hydraulic motor 10, the motor gear is meshed with the transmission flywheel 5, and the load torque T0 is given through the torque brake 8;
2. after the hydraulic motor 10 is started up to T0 (detection data), the load is given a torque T1(T1< T0);
3. after the hydraulic motor 10 is started up to T1 (detection data), the load is given a torque T2(T2< T1);
4. after the hydraulic motor 10 is started up to reach the rotation speed N1 (detected data), the measurement process is ended and the load is given a torque of "0".
Wherein, T0/T1/T2 are all load torques given by the torque brake 8, the load is maximum at first, then the load is reduced, the rotating speed is increased, N1 is the critical speed when simulating the compression ignition of the diesel engine, when the starting hydraulic motor 10 overcomes the maximum load, the transmission flywheel 5 is driven to gradually reach the critical speed, and at the moment, the task of starting the hydraulic motor 10 is completed.
After the measuring process is finished, the accelerating motor 11 drives the accelerating gear 13 to rotate through the engagement of the electromagnetic clutch 12, the accelerating gear continues to rotate in the same direction through the engagement of the transmission flywheel 5, the accelerating is carried out, and when the linear speed of the motor gear transmission indexing position where the transmission flywheel 5 drives the starting hydraulic motor 10 has a speed difference, the motor gear starting the hydraulic motor 10 can relatively reversely return to the original position through the single-phase screw mechanism and is disengaged. At this time, from the perspective of simulation, after the flywheel of the diesel engine is driven by the piston, the motor gear for starting the hydraulic motor 10 is disengaged through the mechanical principle, and finally the starting process is completed.
The utility model discloses the diesel engine starts hydraulic motor testboard can carry out effective test to starting hydraulic motor, effectively improves and produces property ability, prevents that the problem product from flowing.
Claims (3)
1. The utility model provides a diesel engine starts hydraulic motor testboard, includes testboard main part (1), its characterized in that: a power head (3) is arranged above a table board (2) of the test table main body (1), a transmission shaft (4) is arranged in the power head (3), a transmission flywheel (5) is arranged at one end of the transmission shaft (4), the other end of the transmission shaft (4) is connected with a torque and rotation speed sensor (7) through a coupler (6), the other end of the torque and rotation speed sensor (7) is connected with a torque brake (8) through the coupler (6), at least one test position (9) is arranged on the table board (2), the transmission flywheel (5) is meshed with a motor gear of a starting hydraulic motor (10) arranged on the test position (9), an accelerating motor (11) is arranged below the table board (2), an output shaft of the accelerating motor (11) is connected with an electromagnetic clutch (12), and the other end of the electromagnetic clutch (12) is connected with an accelerating gear (, the table board (2) is located at the position below the transmission flywheel (5) and is provided with a hole, and the accelerating gear (13) penetrates through the hole to be meshed with the transmission flywheel (5).
2. The diesel engine starting hydraulic motor test stand of claim 1, wherein: two test positions (9) are arranged on the table top (2), the two test positions (9) are respectively positioned at two ends of the transmission flywheel (5), and motor gears of starting hydraulic motors (10) on the two test positions (9) are meshed with the transmission flywheel (5).
3. The diesel engine starting hydraulic motor test stand of claim 2, wherein: the gear ratio of the transmission flywheel (5) to the motor gear of the starting hydraulic motor (10) is 4.5:1, and the gear ratio of the accelerating gear (13) to the transmission flywheel (5) is 13: 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021118692.7U CN212391216U (en) | 2020-06-16 | 2020-06-16 | Diesel engine starting hydraulic motor test bench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021118692.7U CN212391216U (en) | 2020-06-16 | 2020-06-16 | Diesel engine starting hydraulic motor test bench |
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| Publication Number | Publication Date |
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| CN212391216U true CN212391216U (en) | 2021-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021118692.7U Active CN212391216U (en) | 2020-06-16 | 2020-06-16 | Diesel engine starting hydraulic motor test bench |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113624500A (en) * | 2021-07-28 | 2021-11-09 | 广西玉柴机器股份有限公司 | Diesel engine emission fault torque limitation timing acceleration method and system |
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2020
- 2020-06-16 CN CN202021118692.7U patent/CN212391216U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113624500A (en) * | 2021-07-28 | 2021-11-09 | 广西玉柴机器股份有限公司 | Diesel engine emission fault torque limitation timing acceleration method and system |
| CN113624500B (en) * | 2021-07-28 | 2024-03-01 | 广西玉柴机器股份有限公司 | Diesel engine emission fault torque limiting timing acceleration method and system |
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