CN212621471U - Outboard engine assembly performance test bench - Google Patents
Outboard engine assembly performance test bench Download PDFInfo
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- CN212621471U CN212621471U CN202021266740.7U CN202021266740U CN212621471U CN 212621471 U CN212621471 U CN 212621471U CN 202021266740 U CN202021266740 U CN 202021266740U CN 212621471 U CN212621471 U CN 212621471U
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Abstract
The utility model relates to an outboard engine assembly performance test bench, which belongs to the technical field of engine performance test and comprises a test bracket, a dynamometer used for testing the performance of the outboard engine assembly, an outboard engine assembly fixing device and a water seal system for connecting the outboard engine assembly and the test bracket; the outboard engine assembly is arranged on the outboard engine assembly fixing device, and an output shaft of the outboard engine propeller penetrates through the connecting water seal system through the transmission shaft to be connected with the dynamometer. The utility model adopts a three-dimensional flexible fastening scheme by designing a whole set of water seal system, using the universal shaft for connection and the outboard engine assembly, avoids the transmission shaft between the propeller output shaft and the dynamometer from being soaked in water for a long time, greatly reduces the requirement on the centering degree, and eliminates the limit of the water tank on the transition shaft when the dynamometer and the propeller shaft pass through the water tank in a centering way; the test bench for the outboard engine assembly effectively solves the problems of high centering precision requirement, limited centering position of the transmission shaft and poor stability and reliability of the test bench for the outboard engine assembly.
Description
Technical Field
The utility model belongs to the technical field of the engine performance test technique and specifically relates to outboard engine assembly performance test dress rack.
Background
Outboard engines are propulsion engines mounted on the outside of the hull (side). According to different energy sources, the fuel oil outboard engines and the electric outboard engines are classified. The working principle of the fuel outboard engine is that the chemical energy of the fuel is converted into mechanical energy through an internal combustion engine, and then the mechanical energy is converted into the advancing kinetic energy of the boat through mechanical transmission and a propeller. The electric outboard engine has the working principle that a storage battery which can be recycled is used as an energy source, electric energy is converted into kinetic energy through a motor, and the electric outboard engine is divided into an upper type and a lower type according to the installation position of the motor. The main performance evaluation indexes of the outboard engine are propulsion characteristic indexes, and the performance evaluation of the outboard engine needs to be carried out in the form of an outboard engine assembly (a single engine and a lower complete assembly) to evaluate the parameter indexes of output power, rotating speed, torque and the like of a propeller shaft.
The technical development of the test bed of the domestic outboard engine assembly is slow, the reliability of the test bed is poor, and the error of test data is large. The propeller shaft of the outboard engine is relatively slender, after the transition shaft is added to the dynamometer, the requirement on the centering precision of the propeller shaft is very high, and if the centering precision is not enough during bench testing, the propeller shaft is extremely easy to bend and twist moment fatigue fracture. Because the outboard engine underwater operation environment needs to be simulated, no matter a single water tank or a double water tank transmission shaft is limited by the water tank at present, and the centering difficulty is increased. During outboard engine assembly test, the propeller shaft arranged below the propeller shaft can generate violent swing during the starting of the whole machine and high-speed high-load operation, and fatigue fracture can be generated under the stress influence of the propeller shaft in the state, so that the stability and the reliability of the outboard engine assembly test bench are required to be improved.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an outboard engine assembly performance test bench, which solves the problems of high centering precision requirement, limited centering position of a transmission shaft, poor stability and reliability of the bench of the outboard engine assembly; the utility model discloses simulate the operation environment of outboard engine in aqueous, its lower dress can utilize the suction pump in self area to absorb water from the water tank and carry out abundant cooling to the lower dress, the simulation of very big limit the lower dress is at subaqueous operational environment.
In order to realize the purpose, the utility model discloses a technical scheme is:
a test bench for outboard engine assembly performance comprises a test support, a dynamometer for testing the outboard engine assembly performance, an outboard engine assembly fixing device and a connecting water seal system of the outboard engine assembly and the test support; the outboard engine assembly is arranged on the outboard engine assembly fixing device, and an output shaft of an outboard engine propeller penetrates through the connecting water seal system through a transmission shaft to be connected with the dynamometer; the connecting water seal system comprises a fixed sleeve which is locked with the water seal sleeve and sleeved outside the universal shaft, a movable sealing sleeve which is arranged outside the fixed sleeve and locked with the transition shaft sleeve by a hoop, a transition shaft sleeve which is fixedly arranged on the output shaft of the outboard engine propeller and the universal shaft which is connected with the transition shaft and the transition shaft sleeve; the water seal sleeve is also provided with a guide rail, and the movable sealing sleeve can slide on the fixed sleeve along the guide rail; the output shaft of the propeller and the transition shaft sleeve are arranged on the same axis.
The utility model discloses technical scheme's further improvement lies in: the test bracket comprises a water tank arranged at the lower end of the bracket, a water seal sleeve fixedly installed together with the water tank, an elastic coupling connected with the dynamometer and fixed together with the transition shaft, and a bearing fixedly installed in the water seal sleeve; when the outboard engine assembly goes up and down the rack each time, the elastic coupling, the transition shaft, the dynamometer, the water seal sleeve and the bearing are fixed.
The utility model discloses technical scheme's further improvement lies in: the outboard engine assembly fixing device comprises a support, a flexible holding block and a back plate, wherein the support is provided with a flexible block at the contact part with the outboard engine, the flexible holding block and the support lock the outboard engine assembly, and the back plate is used for suspending the outboard engine assembly.
The utility model discloses technical scheme's further improvement lies in: and the water seal sleeve is also provided with a compressed air inlet and a compressed air outlet.
The utility model discloses technical scheme's further improvement lies in: the water tank is provided with an overflow port, a water inlet and a water outlet.
The utility model discloses technical scheme's further improvement lies in: and a water temperature and liquid level sensor for testing water temperature is also arranged in the water tank.
The utility model discloses technical scheme's further improvement lies in: the transmission shaft comprises a transition shaft and a universal shaft, and a connecting flange on one side of the universal shaft is fixedly arranged on the transition shaft.
Since the technical scheme is used, the utility model discloses the technological effect who gains has:
1. the utility model discloses according to the outboard engine assembly characteristics, down designed three-dimensional support from last and fixed, and support and flexible armful piece all set up flexible piece with outboard engine assembly contact site, solved the violent swing of outboard engine assembly when starting with high-speed high load and leaded to the not hard up problem of rack support, increased the stability and the reliability of test bench.
2. The utility model discloses in because the dynamometer is fixed connection and through the water jacket cover to the connection of water tank, the spacing problem of water tank counter shaft when both having avoided transition axle and the direct centering of screw output shaft has avoided water to reveal from the water tank again.
3. The utility model discloses a water seal system structure, water jacket cover, fixed sleeve, portable sealed sleeve and transition axle sleeve form airtight environment, have avoided the cardan shaft to soak and move in water and damage, have avoided the problem of the transmission shaft soaking in water between screw output shaft and the dynamometer for a long time.
4. The utility model discloses the design of well cardan shaft has eliminated dynamometer and screw output shaft centering when passing the water tank, and the water tank has solved the higher problem of screw output shaft centering requirement to the spacing problem of transition axle, greatly reduced the screw output shaft because the centering precision is not enough the big problem of disconnected axle risk that produces, the effectual outboard engine assembly of having solved requires high problem that leads to the easy fatigue fracture of propeller shaft to the centering degree.
5. The utility model provides a water tank has simulated the operational environment of outboard engine in aqueous, the accuracy and the authenticity of test data have been increased, temperature and liquid level can be monitored to water temperature level sensor, adjust the temperature of water tank normal water and the height of water level according to different work condition demands, water inlet through the water tank, gap and delivery port discharge come the cooperation to be adjusted, all valves of test bench are long-range automatically controlled governing valve, the outboard engine assembly lower bound can utilize the suction pump in self area to absorb water from the water tank and carry out abundant cooling to the lower bound, the simulation of very big limit has lower bound operational environment under water.
6. The utility model discloses a nonstandard structure can be according to whole machine size customization, simple structure, easy installation.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a side sectional view of the present invention;
fig. 3 is an enlarged sectional view of the connecting water seal system of the utility model.
The hydraulic power generation device comprises a support 1, a support 2, a flexible holding block 3, a propeller output shaft 4, an outboard engine assembly 5, a transition shaft sleeve 6, a movable sealing sleeve 7, a fixing sleeve 8, a guide rail 9, an elastic coupling 10, a transition shaft 11, a dynamometer 12, a back plate 13, a water tank 14, a water seal sleeve 15, a bearing 16, a universal shaft 17, a water temperature and liquid level sensor 18, a compressed air inlet 19, a compressed air outlet 20, an overflow port 21, a water inlet 22 and a water outlet.
Detailed Description
The utility model discloses an outboard engine assembly performance test device to the problem that outboard engine assembly test device centering required precision is high, transmission shaft centering position is limited, rack stability and reliability are poor and research and development has simulated the operation environment of outboard engine in aqueous, and its lower dress can utilize the water suction pump in self area to absorb water from the water tank and carry out abundant cooling to the lower dress, the simulation of very big limit lower dress is at subaqueous operational environment.
The present invention will be described in further detail with reference to the accompanying drawings 1 to 3:
a test bench for outboard engine assembly performance comprises a test support, a dynamometer 11 for testing the outboard engine assembly performance, an outboard engine assembly fixing device and a connecting water seal system of an outboard engine assembly 4 and the test support; the outboard engine assembly 4 is arranged on the outboard engine assembly fixing device, and the output shaft 3 of the outboard engine propeller penetrates through the connecting water seal system through the transmission shaft to be connected with the dynamometer 11; the connecting water seal system comprises a fixed sleeve 7 which is locked with a water seal sleeve 14 and sleeved outside a universal shaft 16, a movable seal sleeve 6 which is arranged outside the fixed sleeve 7 and locked with a transition shaft sleeve 5 by a hoop, the transition shaft sleeve 5 fixedly arranged on the outboard engine propeller output shaft 3 and the universal shaft 16 connected with a transition shaft 10 and the transition shaft sleeve 5; the water seal sleeve 14 is also provided with a guide rail 8, and the movable sealing sleeve 6 can slide on the fixed sleeve 7 along the guide rail 8; the propeller output shaft 3 and the transition shaft sleeve 5 are on the same axis. The transmission shaft comprises a transition shaft 10 and a universal shaft 16, wherein a connecting flange on one side of the universal shaft 16 is fixedly arranged on the transition shaft 10. The designed water seal structure, the water seal sleeve 14, the piece 7, the movable sealing sleeve 6 and the transition shaft sleeve 5 form a closed environment, and damage caused by operation of the universal shaft 16 soaked in water is avoided.
The test bracket comprises a water tank 13 arranged at the lower end of the bracket 1, a water jacket 14 fixedly installed together with the water tank 13, an elastic coupling 9 connected with a dynamometer 11 and fixed together with a transition shaft 10, and a bearing 15 fixedly installed in the water jacket 14; when the outboard engine assembly 4 goes up and down on the stand each time, the elastic coupling 9, the transition shaft 10, the dynamometer 11, the water seal sleeve 14 and the bearing 15 are fixed.
The outboard engine assembly fixing device comprises a support 1, a flexible holding block 2 and a back plate 12, wherein the flexible holding block 1 is arranged at a position where the outboard engine assembly fixing device is in contact with an outboard engine, the flexible holding block and the support 1 are used for locking the outboard engine assembly 4, and the back plate 12 is used for suspending the outboard engine assembly 4; the flexible block is made of flexible materials such as nylon blocks, the flexible block is arranged at the contact part of the whole machine, and the upper and lower locking and flexible locking modes are higher in stability and reliability compared with other modes. According to the characteristics of the outboard engine assembly, the three-dimensional support is designed from top to bottom for fixing, and the flexible blocks are arranged at the contact parts of the support 1, the flexible holding block 2 and the outboard engine assembly, so that the problem that the stand support is loosened due to severe swinging of the outboard engine assembly during starting and high-speed high-load is solved, and the stability and the reliability of the test stand are improved. Because the connection of the tester 11 to the water tank 13 is fixed connection and passes through the water jacket sleeve 14, the limit problem of the water tank 13 to the shaft when the transition shaft 10 and the propeller output shaft 3 are directly centered is avoided, and water leakage from the water tank 13 is also avoided.
The water jacket 14 is also provided with a compressed air inlet 18 and a compressed air outlet 19. The access of compressed air prevents water from entering the whole water seal system after the water seal sleeve 14 is leaked, and once the seal fails, the compressed air can blow the water out of the water seal system in time and can find the leakage in time.
The water tank 13 is provided with an overflow port 20, a water inlet 21 and a water outlet 22, the water flow is adjusted by matching the water flow of the water inlet 21, the water flow of the overflow port 20 and the water flow of the water outlet 22, and all valves of the test bed are remote electric control adjusting valves.
A water temperature liquid level sensor 17 for testing water temperature is further arranged in the water tank 13, so that the water temperature and the liquid level can be monitored, and the temperature and the height of the water level in the water tank can be adjusted according to different working condition requirements.
Specifically, the method comprises the following steps:
test rack section: the water jacket 14 and the water tank 13 are fixed together, the elastic coupling 9 and the transition shaft 10 are fixed together, the bearing 15 is fixed in the water jacket 14, the elastic coupling 9 and the dynamometer 11 are connected and are used for centering the parts according to technical requirements, and the parts and an outboard engine assembly rack are manufactured and installed together. When the outboard engine assembly goes up and down on the stand every time, the elastic coupling 9, the transition shaft 10, the dynamometer 11, the water seal sleeve 14 and the bearing 15 are fixed, and the centering test is carried out on the components only after a period of time.
Outboard engine assembly is fixed: before the test, the outboard engine assembly is hung on a test bench, the outboard engine assembly is hung on a back plate 12 to keep the outboard engine assembly in a free state, a transition shaft sleeve 5 is fixed on an outboard engine propeller output shaft 3, and the transition shaft sleeve 5 and the propeller output shaft 3 are on the same axis at the moment; the dial rod is then fixed to the water jacket 14 to center the bearing 15. Because the cardan shaft 16 is used for connection at a later stage, the requirement on centering precision is lower compared with other connection modes, and centering and alignment are easier. After the centering is completed, the support 1 and the flexible holding block 2 are used for locking the outboard engine assembly, the flexible blocks are arranged at the contact positions of the support 1 and the flexible holding block 2 and the outboard engine assembly, and the up-down common locking and flexible locking mode is higher in stability and reliability compared with other modes.
Outboard engine assembly is connected with the test bench: the connecting flange on the side of the cardan shaft 16 is fixed to the transition shaft 10, and then the fixing sleeve 7 is sleeved on the outside of the cardan shaft 16, and the fixing sleeve 7 is locked with the water jacket 14. Locking the guide rail 8 to the water seal sleeve 14, and enabling the universal shaft 16 to slide on the fixed sleeve 7 along the guide rail 8, so that the movable sealing sleeve 6 is retracted to be close to one end of the water seal sleeve 14, and a connecting flange on one side, close to the transition shaft sleeve 5, of the universal shaft 16 is exposed; after the universal shaft 16 is connected and locked with the transition shaft sleeve 5, the movable sealing sleeve 6 is pushed to be in contact with the transition shaft sleeve 5, and the movable sealing sleeve 6 and the transition shaft sleeve 5 are locked by using a hoop; after the connection is finished, a compressed air inlet and a compressed air outlet are connected, and the access of the compressed air prevents water from entering the whole water seal system after the water seal sleeve 14 is leaked; once the sealing is invalid, the compressed air can blow water out of the water seal system in time, and leakage can be found in time.
When the outboard engine operates, transition axle sleeve 5 fixed mounting is on screw output shaft 3, and screw output shaft 3 drives cardan shaft 16 through the bearing in transition axle sleeve 5 and rotates, and cardan shaft 16 links together with transition axle 10 and rotates through the bearing in water seal cover 14, and elastic coupling 9 rotates together with transition axle 10, because elastic coupling 9 is together fixed with dynamometer 11, and power output tests in dynamometer 11 this moment.
After the test support, the outboard engine assembly 4, the dynamometer 11, the outboard engine assembly fixing device and the connection device of the outboard engine assembly 4 and the test bench are connected, the temperature of water in the water tank 13 can be adjusted through the water temperature and liquid level sensor 17 according to the requirements of test working conditions, the height of the water level in the water tank 13 is adjusted through the water inlet 21, the overflow port 20 and the water outlet 22, and then the comprehensive performance test of the outboard engine assembly is carried out.
The practical application condition is as follows: the utility model discloses having produced, having participated in the comprehensive properties test of outboard engine assembly, service conditions is good.
To sum up, the utility model adopts a three-dimensional flexible fastening scheme by designing a whole set of water seal system, using the universal shaft for connection and using the outboard engine assembly, so as to avoid the transmission shaft between the propeller output shaft and the dynamometer from being soaked in water for a long time, greatly reduce the requirement on the alignment degree, and eliminate the limit of the water tank on the transition shaft when the dynamometer and the propeller output shaft pass through the water tank in alignment; the test bench for the outboard engine assembly effectively solves the problems of high requirement on centering precision, limited centering position of a transmission shaft and poor stability and reliability of the bench, and solves the problem that the propeller shaft is easy to fatigue fracture due to high requirement on centering degree in the test of the outboard engine assembly.
Claims (7)
1. A test bench for outboard engine assembly performance comprises a test support, a dynamometer (11) for testing the outboard engine assembly performance, an outboard engine assembly fixing device and a connecting water seal system of an outboard engine assembly (4) and the test support; the method is characterized in that: the outboard engine assembly (4) is arranged on the outboard engine assembly fixing device, and an output shaft (3) of the outboard engine propeller penetrates through the connecting water seal system through the transmission shaft to be connected with the dynamometer (11); the connecting water seal system comprises a fixed sleeve (7) which is locked with a water seal sleeve (14) and sleeved outside the universal shaft (16), a movable sealing sleeve (6) which is arranged outside the fixed sleeve (7) and locked with the transition shaft sleeve (5) by a hoop, the transition shaft sleeve (5) fixedly arranged on the outboard engine propeller output shaft (3) and the universal shaft (16) connected with the transition shaft (10) and the transition shaft sleeve (5); the water seal sleeve (14) is also provided with a guide rail (8), and the movable sealing sleeve (6) can slide on the fixed sleeve (7) along the guide rail (8); the propeller output shaft (3) and the transition shaft sleeve (5) are on the same axis.
2. The outboard engine assembly performance test rig of claim 1, wherein: the test support comprises a water tank (13) arranged at the lower end of the support (1), a water seal sleeve (14) fixedly installed with the water tank (13), an elastic coupling (9) connected with a dynamometer (11) and fixed with a transition shaft (10), and a bearing (15) fixedly installed in the water seal sleeve (14); when the outboard engine assembly (4) goes up and down the rack each time, the elastic coupling (9), the transition shaft (10), the dynamometer (11), the water seal sleeve (14) and the bearing (15) are fixed.
3. The outboard engine assembly performance test rig of claim 1, wherein: the outboard engine assembly fixing device comprises a support (1) with a flexible block arranged at a contact position with an outboard engine, a flexible holding block (2) which is used for locking the outboard engine assembly (4) together with the support (1), and a back plate (12) for suspending the outboard engine assembly (4).
4. The outboard engine assembly performance test rig of claim 1, wherein: the water envelope (14) is also provided with a compressed air inlet (18) and a compressed air outlet (19).
5. The outboard engine assembly performance test rig of claim 2, wherein: the water tank (13) is provided with an overflow port (20), a water inlet (21) and a water outlet (22).
6. The outboard engine assembly performance test rig of claim 2, wherein: and a water temperature and liquid level sensor (17) for testing water temperature is also arranged in the water tank (13).
7. The outboard engine assembly performance test rig of claim 1, wherein: the transmission shaft comprises a transition shaft (10) and a universal shaft (16), wherein a connecting flange on one side of the universal shaft (16) is fixedly arranged on the transition shaft (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021266740.7U CN212621471U (en) | 2020-07-02 | 2020-07-02 | Outboard engine assembly performance test bench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021266740.7U CN212621471U (en) | 2020-07-02 | 2020-07-02 | Outboard engine assembly performance test bench |
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| Publication Number | Publication Date |
|---|---|
| CN212621471U true CN212621471U (en) | 2021-02-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021266740.7U Active CN212621471U (en) | 2020-07-02 | 2020-07-02 | Outboard engine assembly performance test bench |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212621471U (en) |
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2020
- 2020-07-02 CN CN202021266740.7U patent/CN212621471U/en active Active
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