CN220153781U - Propeller thrust testing device - Google Patents
Propeller thrust testing device Download PDFInfo
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- CN220153781U CN220153781U CN202321103404.4U CN202321103404U CN220153781U CN 220153781 U CN220153781 U CN 220153781U CN 202321103404 U CN202321103404 U CN 202321103404U CN 220153781 U CN220153781 U CN 220153781U
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- propeller
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- pressure sensor
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- 238000012360 testing method Methods 0.000 title claims abstract description 41
- 239000000758 substrate Substances 0.000 claims abstract description 53
- 230000005540 biological transmission Effects 0.000 claims description 4
- 238000005259 measurement Methods 0.000 abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 238000012546 transfer Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000001514 detection method Methods 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a propeller thrust testing device, which comprises an opening arranged in the middle of a mounting substrate; the two bearing seats are arranged on the bearing surface of the mounting substrate and are respectively fixed on two opposite sides of the opening; two ends of the rotating shaft are respectively connected with the two bearing seats; the adapter block is fixed in the middle of the rotating shaft, and the bottom of the adapter block is opposite to the opening; the connecting component is fixed at the bottom of the adapter block and penetrates through the opening, and the end part of the connecting component is used for being connected with the propeller to be tested; the sensor fixing beam is positioned at the bottom side of the mounting substrate and horizontally fixed on the side surface of the connecting component, and the extending direction of the sensor fixing beam is the same as the thrust direction of the propeller to be tested; the pressure sensor is fixed on the bearing surface of the sensor fixing beam, and the measuring surface is contacted with the bottom surface of the mounting substrate; the adjusting component is respectively connected with the adapter block and the mounting substrate and is positioned in the opposite direction of the pressure sensor and used for adjusting the position of the pressure sensor. Simple structure, flexible use and higher measurement accuracy.
Description
Technical Field
The utility model relates to the field of propeller testing, in particular to a propeller thrust testing device.
Background
Along with popularization and application of underwater vehicles, more and more fields are applied to underwater vehicle detection, such as dam detection, terrain detection, hydrological measurement, submarine cable detection and the like. These use environments require that the underwater vehicle can realize full driving, i.e. six degrees of freedom are provided with propulsion devices, so that more and more underwater vehicles are driven by externally hung propellers, and the devices assemble a driving motor and the propellers into a whole to be installed outside a product. When the propeller design production is completed, the thrust characteristics thereof need to be tested, including thrust testing and torque testing. The existing testing device is used for measuring in the air, adopts a tension meter and a torque meter for measuring, is not suitable for direct underwater measurement, cannot limit the axial direction completely in the running process of the propeller, and has safety risks; the measurement is carried out by adopting a circulating water tank, the screw propeller is driven to rotate by adopting mechanisms such as an external drive, a coupling, a commutator and the like, the optical axis movement and the torque measurement are measured by a dynamometer, the torque measurement is carried out by a torque sensor, the structure is complex, the operation and the installation are complex, and the device is not suitable for the test of the externally hung screw propeller.
Aiming at the problem that the propeller test is inconvenient in the prior art, no effective solution exists at present.
Disclosure of Invention
In order to solve the problems, the utility model provides a propeller thrust testing device, which feeds back the propeller thrust to a sensor based on a lever principle through a pressure sensor, so as to obtain a thrust value, and gives a specific load torque value to a motor based on a voltage and current value obtained by testing the propeller in water, so that the motor has the same power as the propeller in water in working, and a torque value at a corresponding rotating speed can be obtained, thereby solving the problem of inconvenient propeller testing in the prior art.
In order to achieve the above object, the present utility model provides a propeller thrust testing apparatus, comprising: the mounting substrate is provided with an opening in the middle; the two bearing seats are arranged on the bearing surface of the mounting substrate and are respectively fixed on two opposite sides of the opening; the two ends of the rotating shaft are respectively connected with the two bearing seats; the switching block is fixed in the middle of the rotating shaft, and the bottom of the switching block is opposite to the opening; the connecting component is fixed at the bottom of the adapter block and penetrates through the opening, and the end part of the connecting component is used for being connected with the propeller to be tested; the sensor fixing beam is positioned at the bottom side of the mounting substrate and horizontally fixed on the side surface of the connecting assembly, and the extending direction of the sensor fixing beam is the same as the thrust direction of the propeller to be tested; the pressure sensor is fixed on the bearing surface of the sensor fixing beam, and the measuring surface is in contact with the bottom surface of the mounting substrate; and the adjusting component is respectively connected with the adapter block and the mounting substrate, is positioned in the opposite direction of the pressure sensor and is used for adjusting the position of the pressure sensor.
Further optionally, the adjusting assembly includes: one end of the limiting plate is connected with the adapter block, and the other end of the limiting plate is connected with the mounting substrate through an adjusting bolt; the elastic piece is sleeved on the outer side of the adjusting bolt.
Further optionally, two levels are orthogonally installed on the bearing surface of the installation substrate at positions corresponding to the pressure sensor; and a level gauge is arranged on the upper surface of the limiting plate.
Further optionally, the elastic member is a spring.
Further optionally, each bearing housing includes: the bearing support is connected with the mounting substrate, and the middle part of the bearing support is provided with a hole for accommodating a bearing; the bearing cover is fixed on the side face of the bearing bracket and is used for accommodating the end part of the rotating shaft to be connected with the bearing through the bearing cover.
Further optionally, the bearing is a deep groove ball bearing.
Further optionally, the connection assembly includes: the adapter plate is connected with the bottom of the adapter block through the opening; and one end of the fixing piece is connected with the bottom of the adapter plate, and the other end of the fixing piece is used for clamping the propeller to be tested.
Further optionally, the fixing part is a clamp, and the clamping hole of the clamp is adjustable in size.
Further optionally, the pressure sensor is connected to the sensor fixing beam through a force transfer adapter.
On the other hand, the utility model also provides a propeller thrust testing method, which adopts the propeller thrust testing device to perform thrust testing and comprises the following steps: an external power supply is adopted to supply power to the propeller to be tested; monitoring working current, working voltage and rotating speed of the propeller to be tested in real time; reading the current pressure of the pressure sensor after the propeller to be tested stably works; calculating the thrust of the propeller to be tested according to the current pressure, the first vertical distance and the second vertical distance; the first vertical distance and the second vertical distance are measured in advance, the first vertical distance is the vertical distance between the center of the pressure sensor and the center of the rotating shaft, and the second vertical distance is the vertical distance between the center of the rotating shaft of the propeller to be tested and the center of the rotating shaft.
The technical scheme has the following beneficial effects:
(1) The structure is simple, and the use and maintenance are convenient;
(2) The universality is strong, and the clamp can be adjusted to adapt to propeller measurement of different sizes;
(3) The measuring accuracy is high, the structure position adjusting function is realized, and the parallelism between the sensor and the propelling direction can be ensured;
(4) The environmental adaptability is strong, and the thrust of the propeller in water and air can be realized;
(5) The safety is high, and each structure is fixed relatively when working, can not take place relative movement.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a propeller thrust testing device according to an embodiment of the present utility model;
fig. 2 is a flowchart of a propeller thrust testing method according to an embodiment of the present utility model.
Reference numerals: 1-mounting a substrate; 2-bearing seats; 201-a bearing support; 202-a bearing; 203-a bearing cap; 3-rotating shaft; 4-a transfer block; a 5-connection assembly; 501-a transfer beam; 502-an adapter plate; 503-fixing piece; 6-a sensor fixing beam; 7-a pressure sensor; 8-an adjustment assembly; 801-limiting plates; 802-adjusting bolts; 803-an elastic element; 9-level gauge; 10-a force transmission adapter; 11-positioning bolts.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In order to solve the problem of inconvenient propeller testing, an embodiment of the present utility model provides a propeller thrust testing device, and fig. 1 is a schematic structural diagram of the propeller thrust testing device provided in the embodiment of the present utility model, as shown in fig. 1, where the device includes: the mounting substrate 1, the middle part of the mounting substrate 1 is provided with an opening; the two bearing seats 2 are arranged on the bearing surface of the mounting substrate 1 and are respectively fixed on two opposite sides of the opening; the two ends of the rotating shaft 3 are respectively connected with the two bearing seats 2; the adapter block 4 is fixed in the middle of the rotating shaft 3, and the bottom of the adapter block 4 is opposite to the opening; the connecting component 5 is fixed at the bottom of the adapter block 4 and penetrates through the opening, and the end part of the connecting component 5 is used for being connected with the propeller to be tested; the sensor fixing beam 6 is positioned at the bottom side of the mounting substrate 1 and horizontally fixed on the side surface of the connecting component 5, and the extending direction of the sensor fixing beam 6 is the same as the thrust direction of the propeller to be tested; a pressure sensor 7, the pressure sensor 7 is fixed on the bearing surface of the sensor fixing beam 6, and the measuring surface is contacted with the bottom surface of the mounting substrate 1; the adjusting component 8 is respectively connected with the adapter block 4 and the mounting substrate 1, is positioned in the opposite direction of the pressure sensor 7 and is used for adjusting the position of the pressure sensor 7.
As shown in fig. 1, the mounting substrate 1 is open at the middle and is substantially square.
The two bearing seats 2 are respectively fixed on two opposite sides of the opening of the mounting substrate 1, and the two bearing seats 2 are symmetrically arranged by taking the central axis of the opening as an axis. Specifically, each bearing seat 2 is fixed on the mounting substrate 1 by a screw, and a dismounting function can be realized.
Two bearing seats 2 are respectively connected to the both ends of pivot 3, and the pivot 3 is the level setting after connecting, can rotate under the not spacing condition.
The adapter block 4 is fixed in the middle of the rotating shaft 3 through a positioning screw 11, an adjusting component 8 is fixed on the side face of the adapter block, and a connecting component 5 is connected to the bottom face of the adapter block.
The connecting component 5 passes through the opening of the mounting substrate 1 and is connected with the propeller to be detected, and the free end of the connecting component 5 is provided with a clamping hole for fixing the propeller to be detected, and the propeller to be detected is in a horizontal state when being fixed.
The sensor fixing beam 6 is horizontally arranged on the side face of the connecting component 5 at the bottom side of the mounting substrate 1, and the extending direction of the sensor fixing beam is opposite to that of the propeller to be tested and is consistent with the thrust direction of the propeller to be tested.
The pressure sensor 7 is fixed to the bearing surface of the sensor fixing beam 6, and the top surface (measurement surface) is in contact with the mounting substrate 1 in an initial state.
The adjusting component 8 is arranged at a position corresponding to the propeller to be measured and is used for connecting the adapter block 4 with the mounting substrate 1, and can drive the rotating shaft 3 to rotate when the adapter block is adjusted so as to adjust the position of the pressure sensor 7 and enable the pressure sensor 7 to be in contact with the mounting substrate 1 in an initial state.
During thrust testing, the propeller to be tested rotates to generate thrust, and based on the lever principle, the connecting assembly 5, the sensor and the pressure sensor 7 are sequentially driven, so that the measuring surface of the pressure sensor 7 is tightly pressed against the bottom surface of the mounting substrate 1, pressure indication appears, and the thrust of the propeller to be tested can be obtained according to the pressure indication. In addition, based on the voltage and current value obtained by the test when the propeller works in water, a specific load torque value is given to the motor, so that the motor has the same power as the power when the propeller works in water, and a torque value at a corresponding rotating speed can be obtained.
As an alternative embodiment, the adjusting assembly 8 comprises: the limiting plate 801, one end of the limiting plate 801 is connected with the adapter block 4, and the other end is connected with the mounting substrate 1 through the adjusting bolt 802; the elastic piece 803, the elastic piece 803 is overlapped outside the adjusting bolt 802.
The limiting plate 801 is horizontally arranged, one end of the limiting plate is connected with the adapter 4, and the other end of the limiting plate is connected with the mounting substrate 1 through the adjusting bolt 802.
The adjusting bolt 802 is disposed perpendicularly to the mounting substrate 1, and the relative position of the limiting plate 801 and the mounting substrate 1 can be controlled by rotating the adjusting bolt 802.
An elastic member 803 is sleeved outside the adjusting bolt 802 to ensure the relative position of the adjusting bolt 802 and the limiting plate 801.
Specifically, when the adjusting bolt 802 is screwed into the mounting substrate 1, the limiting plate 801 moves toward the mounting substrate 1; conversely, when the adjusting bolt 802 is away from the mounting substrate 1, the limiting plate 801 moves in a direction away from the mounting substrate 1.
As an alternative embodiment, two levels 9 are orthogonally mounted on the bearing surface of the mounting substrate 1 at positions corresponding to the pressure sensors 7; a level 9 is mounted on the upper surface of the limiting plate 801.
In order to accurately ensure levelness, in this embodiment, two orthogonal level gauges 9 are disposed on the mounting substrate 1, where one of the level gauges is consistent with the extending direction of the sensor fixing beam 6, and is the thrust direction of the propeller to be detected. In addition, a level 9 is also provided on the upper surface of the limiting plate 801, and the level 9 is kept horizontal when the limiting plate 801 is adjusted by the control adjusting bolt 802.
As an alternative embodiment, the elastic member 803 is a spring.
As an alternative embodiment, each bearing housing 2 comprises: the bearing support 201 is connected with the mounting substrate 1, and the middle part of the bearing support 201 is provided with a hole for accommodating the bearing 202; a bearing cover 203, the bearing cover 203 is fixed to the side surface of the bearing bracket 201, and is used for accommodating the end part of the rotating shaft 3 and is connected with the bearing 202.
The bearing support 201 is arched, two sides are fixed on the mounting substrate 1 through screws, and the middle part is provided with holes. The central openings of the two bearing holders 201 are coaxial.
A bearing 202 is accommodated in the bore of each bearing support 201 for connection with the end of the spindle 3.
The bearing cover 203 is fixed to the side of the bearing holder 201 by screws, and the rotating shaft 3 is connected to the bearing 202 through the bearing cover 203.
As an alternative embodiment, the bearing 202 is a deep groove ball bearing 202.
As an alternative embodiment, the connection assembly 5 includes: the transfer beam 501, one end of the transfer beam 501 is connected with the bottom of the transfer block 4, and the other end passes through the opening to be connected with the transfer plate 502; and one end of the fixing piece 503 is connected with the bottom of the adapter plate 502, and the other end of the fixing piece 503 is used for clamping the propeller to be tested.
The two sides of the adapter plate 502 are respectively connected with the adapter beam 501 and the fixing piece 503, the adapter beam 501 is connected with the adapter block 4, and the fixing piece 503 is used for clamping the propeller to be tested.
As an alternative embodiment, the fixing member 503 is a clip, and the size of the clipping hole of the clip can be adjusted.
As an alternative embodiment, the pressure sensor 7 is connected to the sensor support beam 6 via a force transmission adapter 10.
As a specific embodiment, the installation process of the propeller thrust testing device is as follows:
firstly, a deep groove ball bearing 202 is installed in a bearing bracket 201, and a bearing cover 203 is fastened by screws; the adapter block 4 is installed in the middle of the rotating shaft 3 and is positioned and connected by a positioning bolt; after the rotating shaft 3 is mounted on the inner ring of the deep groove ball bearing 202, the whole body is fastened to the mounting substrate 1 together with the bearing seat 2; the lower screw of the adapter block 4 is sequentially connected with the adapter beam 501, the adapter plate 502 and the clamp; a sensor fixing beam 6 is arranged below the left side of the mounting substrate 1, the inner side of the sensor fixing beam 6 is connected with a pressure sensor 7 through a screw, and a force transmission adapter 10 is arranged in the middle of the left side of the adapter beam 501; two gradienters 9 are orthogonally arranged above the left side of the mounting substrate 1, and the gradienters 9 are arranged above the limiting plate 801; the limiting plate 801 is connected with the mounting substrate 1 by an adjusting bolt 802, and an adjusting spring is arranged outside the adjusting bolt 802; finally, the screw is fastened by a clamp, and the limiting plate 801 is adjusted by the adjusting bolt 802 so that the level 9 is kept horizontal.
As an alternative implementation manner, an embodiment of the present utility model provides a method for testing a propeller thrust, where the method for testing a propeller thrust is performed by using the device for testing a propeller thrust, and fig. 2 is a flowchart of the method for testing a propeller thrust provided by the embodiment of the present utility model, and as shown in fig. 2, the method includes:
s1, adopting an external power supply to supply power to a propeller to be tested;
s2, monitoring working current, working voltage and rotating speed of the propeller to be tested in real time;
s3, after the propeller to be tested stably works, reading the current pressure of the pressure sensor;
s4, calculating the thrust of the propeller to be tested according to the current pressure, the first vertical distance and the second vertical distance; the first vertical distance and the second vertical distance are measured in advance, the first vertical distance is the vertical distance between the center of the pressure sensor and the center of the rotating shaft, and the second vertical distance is the vertical distance between the center of the rotating shaft of the propeller to be tested and the center of the rotating shaft.
The method comprises the steps of supplying power to a propeller motor by an external power supply, monitoring working current, working voltage and rotating speed of the propeller, and measuring pressure F by a pressure sensor after the propeller motor works stably, wherein the propeller thrust T=FxL1/L2 exists. As shown in fig. 1, L1 is the vertical distance between the center of the pressure stress sensor and the center of the rotating shaft, and L2 is the vertical distance between the center of the rotating shaft of the propeller and the center of the rotating shaft. After the working voltage is determined, different working currents can be adjusted and set, corresponding rotating speeds are monitored, and further propeller thrust characteristic curves under different working conditions are obtained.
Torque testing may also be performed: the motor dynamometer is connected with an output shaft of the propeller driving motor, a certain torque load is applied to the motor dynamometer, voltage obtained during propeller thrust test is applied to drive the propeller driving motor, driving current is gradually increased, and when the driving current and the rotating speed are the same as the test value in water, the torque load of the dynamometer at the moment is propeller torque. The torque characteristic curve of the propeller can be obtained by measuring the torque values of the dynamometer under different working conditions.
The technical scheme has the following beneficial effects:
(1) The structure is simple, and the use and maintenance are convenient;
(2) The universality is strong, and the clamp can be adjusted to adapt to propeller measurement of different sizes;
(3) The measuring accuracy is high, the structure position adjusting function is realized, and the parallelism between the sensor and the propelling direction can be ensured;
(4) The environmental adaptability is strong, and the thrust of the propeller in water and air can be realized;
(5) The safety is high, and each structure is fixed relatively when working, can not take place relative movement.
The foregoing description of the embodiments of the present utility model further provides a detailed description of the objects, technical solutions and advantages of the present utility model, and it should be understood that the foregoing description is only illustrative of the embodiments of the present utility model and is not intended to limit the scope of the present utility model, and any modifications, equivalent substitutions, improvements, etc. that fall within the spirit and principles of the present utility model should be included in the scope of the present utility model.
Claims (9)
1. A propeller thrust testing apparatus, comprising:
the mounting substrate is provided with an opening in the middle;
the two bearing seats are arranged on the bearing surface of the mounting substrate and are respectively fixed on two opposite sides of the opening;
the two ends of the rotating shaft are respectively connected with the two bearing seats;
the switching block is fixed in the middle of the rotating shaft, and the bottom of the switching block is opposite to the opening;
the connecting component is fixed at the bottom of the adapter block and penetrates through the opening, and the end part of the connecting component is used for being connected with the propeller to be tested;
the sensor fixing beam is positioned at the bottom side of the mounting substrate and horizontally fixed on the side surface of the connecting assembly, and the extending direction of the sensor fixing beam is the same as the thrust direction of the propeller to be tested;
the pressure sensor is fixed on the bearing surface of the sensor fixing beam, and the measuring surface is in contact with the bottom surface of the mounting substrate;
and the adjusting component is respectively connected with the adapter block and the mounting substrate, is positioned in the opposite direction of the pressure sensor and is used for adjusting the position of the pressure sensor.
2. The propeller thrust testing apparatus of claim 1, wherein the adjustment assembly comprises:
one end of the limiting plate is connected with the adapter block, and the other end of the limiting plate is connected with the mounting substrate through an adjusting bolt;
the elastic piece is sleeved on the outer side of the adjusting bolt.
3. The propeller thrust testing apparatus of claim 2, wherein:
two levels are orthogonally arranged on the bearing surface of the mounting substrate at the position corresponding to the pressure sensor;
and a level gauge is arranged on the upper surface of the limiting plate.
4. The propeller thrust testing apparatus of claim 2, wherein:
the elastic piece is a spring.
5. The propeller thrust testing apparatus of claim 1, wherein each bearing housing comprises:
the bearing support is connected with the mounting substrate, and the middle part of the bearing support is provided with a hole for accommodating a bearing;
the bearing cover is fixed on the side face of the bearing bracket and is used for accommodating the end part of the rotating shaft to be connected with the bearing through the bearing cover.
6. The propeller thrust testing apparatus of claim 5, wherein:
the bearing is a deep groove ball bearing.
7. The propeller thrust testing apparatus of claim 1, wherein the connection assembly comprises:
the adapter plate is connected with the bottom of the adapter block through the opening;
and one end of the fixing piece is connected with the bottom of the adapter plate, and the other end of the fixing piece is used for clamping the propeller to be tested.
8. The propeller thrust testing apparatus of claim 7, wherein:
the fixing piece is a clamp, and the clamping hole of the clamp is adjustable in size.
9. The propeller thrust testing apparatus of claim 1, wherein:
the pressure sensor is connected with the sensor fixing beam through a force transmission adapter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321103404.4U CN220153781U (en) | 2023-05-09 | 2023-05-09 | Propeller thrust testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321103404.4U CN220153781U (en) | 2023-05-09 | 2023-05-09 | Propeller thrust testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220153781U true CN220153781U (en) | 2023-12-08 |
Family
ID=89010120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321103404.4U Active CN220153781U (en) | 2023-05-09 | 2023-05-09 | Propeller thrust testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220153781U (en) |
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2023
- 2023-05-09 CN CN202321103404.4U patent/CN220153781U/en active Active
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