CN113624387A - Hydrostatic thrust test platform of underwater propulsor - Google Patents
Hydrostatic thrust test platform of underwater propulsor Download PDFInfo
- Publication number
- CN113624387A CN113624387A CN202110967440.4A CN202110967440A CN113624387A CN 113624387 A CN113624387 A CN 113624387A CN 202110967440 A CN202110967440 A CN 202110967440A CN 113624387 A CN113624387 A CN 113624387A
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- China
- Prior art keywords
- mounting seat
- pressure gauge
- seat
- arm
- test platform
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/12—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring axial thrust in a rotary shaft, e.g. of propulsion plants
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0028—Force sensors associated with force applying means
- G01L5/0038—Force sensors associated with force applying means applying a pushing force
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- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Analytical Chemistry (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention relates to a still water thrust test platform of an underwater propeller, which comprises a water pool, a walking platform, a plurality of cross beams and a thrust test mechanism, wherein a first mounting seat is arranged on the circumference of the water pool; the thrust testing mechanism comprises a rotating shaft and a pressure gauge mounting seat, bearing seats used for being connected with the mounting seat II are arranged at two ends of the rotating shaft, a rotating force arm and a pressure arm are fixed on a shaft body of the rotating shaft, a clamp is arranged at the free end of the rotating force arm, two ends of the pressure gauge mounting seat are mounted on the mounting seat II, and a pressure gauge is fixed on the pressure gauge mounting seat; has the advantages that: the horizontal position of the thrust testing mechanism is adjustable, the rotating force arm with adjustable length is matched, the propeller can be adjusted freely underwater, the environment of the propeller when the underwater water inlet side and the water outlet side are blocked and the propeller is close to the water bottom can be simulated, and then the influence of the environment on the thrust is read.
Description
Technical Field
The invention relates to the field of underwater propellers, in particular to a hydrostatic thrust testing platform of an underwater propeller.
Background
The underwater propeller is a power device of most underwater equipment, and the hydrostatic thrust of the underwater propeller is a core design parameter. Usually, the hydrostatic thrust of the underwater propeller is calculated, but due to the influence of various resistances, errors and the like, the real value of the hydrostatic thrust is often deviated from the calculated value, and the deviation may influence the overall performance of the served underwater equipment. Therefore, a device is needed for accurately measuring the thrust value of the underwater propeller under the condition of still water.
At present, few proposals about thrust tests of underwater propellers can be found, and the following defects exist in the available proposal structure: 1. when the underwater propeller is replaced, the fixing frame needs to be integrally taken out of water for replacement, which is very inconvenient; 2. the scheme structure is too complex, so that more interaction between structural parts is caused, and certain influence on a test result can be caused, so that an unplanned error is brought; 3. the propeller can not move under the influence of the fixed installation of the structural member on the underwater position, and when the underwater propeller needs to be changed in the underwater position, only another set of test structure can be manufactured again, which is time-consuming and labor-consuming.
Based on this, the present disclosure is thus directed.
Disclosure of Invention
The invention aims to provide a hydrostatic thrust test platform for an underwater propeller, which has a simple structure, is convenient for dismounting the underwater propeller and can adjust the position of a tested propeller in water.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a still water thrust test platform for an underwater propeller comprises a pool, a walking platform, a plurality of cross beams and a thrust test mechanism, wherein a first mounting seat is arranged on the circumference of the pool, the walking platform and the cross beams are arranged above the pool through the first mounting seat, and second mounting seats are arranged on two sides of the walking platform and the cross beams;
the thrust testing mechanism comprises a rotating shaft and a pressure gauge mounting seat, bearing seats used for being connected with a mounting seat II are arranged at two ends of the rotating shaft, a rotating force arm and a pressure arm are fixed on a shaft body of the rotating shaft, a clamp is arranged at the free end of the rotating force arm, two ends of the pressure gauge mounting seat are installed on the mounting seat II, a pressure gauge is fixed on the pressure gauge mounting seat, and the pressure gauge is located on the rotating track of the free end of the pressure arm.
Furthermore, a steel structure frame is arranged on the periphery of the pool, and the first mounting seat is arranged on the steel structure frame beam.
Furthermore, the first mounting seat is a hole seat provided with a mounting hole, and both ends of the walking platform and the two ends of the span beam in the length direction are provided with long holes matched with the first mounting seat.
The device further comprises a first driving mechanism, wherein the first mounting seat is a slide rail seat, the two ends of the walking platform and the two ends of the span beam in the length direction are connected to the first mounting seat in a sliding mode, and the first driving mechanism is used for driving the walking platform and the span beam to slide on the first mounting seat.
Furthermore, the second mounting seat is a hole seat provided with a mounting hole, and the bearing seat and the pressure gauge mounting seat are both provided with long holes matched with the second mounting seat.
Further, including actuating mechanism two, mount pad two is the slide rail seat, the equal sliding connection of bearing frame and pressure gauge mount pad is on mount pad two, actuating mechanism two is used for driving bearing frame and pressure gauge mount pad and slides on mount pad two.
Furthermore, the length of the rotating force arm and the pressure arm is adjustable.
Furthermore, the rotating force arm and the pressure arm respectively comprise an inner thread through pipe and a plurality of groups of short pipes which have the same length and are provided with pipe threads at two ends.
Furthermore, the rotating arm of force and the pressure arm are both electric control telescopic cylinders.
Further, the pressure arm is in a horizontal position when pressed against the pressure gauge.
The invention has the advantages that: through setting up mount pad two, realize that thrust accredited testing organization's horizontal position is adjustable, the rotatory arm of force that length can be adjusted in the cooperation has realized the arbitrary regulation of propeller position under water, can simulate the propeller and intake the side under water, go out the environment when water side is obstructed and the propeller is close to the bottom, and then carry out the reading to the influence of above-mentioned environment to its thrust size.
Drawings
FIG. 1 is a schematic view of the constitution of the present invention in example 1;
FIG. 2 is a schematic view of the structure of the walking board of FIG. 1;
FIG. 3 is a schematic view of the construction of the bridge of FIG. 1;
FIG. 4 is a schematic view of the configuration of the thrust testing mechanism of FIG. 1;
description of the reference symbols
The device comprises a water pool 1, a walking platform 2, a span beam 3, a pressure gauge 4, a thrust testing mechanism 5, a first mounting seat 6 and a steel structure frame 7;
a walking main beam 21, a walking bottom plate 22, a walking handrail 23 and a second mounting seat 24;
a bridge girder 31;
the pressure gauge comprises a bearing seat 51, a rotating shaft 52, a rotating arm 53, a pressure gauge mounting seat 54, a clamp 55, a pressure arm 56, an inner wire straight-through 57 and a short pipe 58.
Detailed Description
The present invention will be described in further detail with reference to examples.
Example 1
The embodiment provides a hydrostatic thrust test platform for an underwater thruster, which comprises a water pool 1, a walking platform 2, a span beam 3, a pressure gauge 4 and a thrust test mechanism 5, as shown in fig. 1. The horizontal force generated by the underwater propeller is converted into vertical downward pressure through the thrust testing mechanism 5, and then the reading is carried out through the pressure gauge 4, so that the measurement of the thrust value of the underwater propeller is realized.
The periphery in pond 1 is equipped with steel structural framework 7, and steel structural framework 7's top is equipped with round C shaped steel roof beam, is equipped with mount pad 6 on the C shaped steel roof beam, and mount pad 6 in this embodiment is the hole seat that is equipped with the mounting hole. The steel structural frame 7 can reinforce the strength of the pool 1 and can also bear the weight of the superstructure.
As shown in fig. 2, the walking board 2 is made of a welded steel structure, the walking board main beams 21 on both sides in the width direction are C-shaped steel with upward openings, the two ends in the length direction are respectively provided with a long hole, and the walking board main beams are connected and fixed with the first mounting seat 6 through bolts, and the front and rear positions can be adjusted according to the use condition. A second mounting seat 24 is fixed in the groove of the walking main beam 21, and the second mounting seat 24 in this embodiment is a hole seat provided with a mounting hole. A walking bottom plate 22 is arranged between the two walking main beams 21, and walking handrails 23 positioned at two sides of the walking bottom plate 22 are fixed on the walking main beams 21.
As shown in fig. 1 and 3, the pool 1 of the embodiment is provided with two cross beams 3, each cross beam 3 is formed by welding two cross beam main beams 31, wherein the cross beam main beams 31 on two sides are angle irons with opposite side openings, two ends in the length direction are respectively provided with a long hole, the long holes are matched and fixed with the first mounting seat 6 through bolts, and the front and rear positions can be adjusted according to the use condition. A second mounting seat 24 which is the same as the main walking board beam 21 is fixed in the inner opening of the main cross beam 31.
As shown in fig. 4, the thrust testing mechanism 5 includes a rotating shaft 52, a pressure gauge mounting seat 54, and bearing seats 51 located at two ends of the rotating shaft 52, a bearing connected to the rotating shaft 52 is disposed in each bearing seat 51, a long hole is formed in each bearing seat 51, and in this embodiment, the two bearing seats 51 are respectively fixed on the second mounting seats 24 of the two cross beams 3 through bolts. During testing, the fixing position of the bearing seat 51 can be selected according to actual tested conditions and requirements, and fine adjustment of the position of the bearing seat 51 can be realized by arranging the long hole on the bearing seat 51. The shaft body of the rotating shaft 52 is fixedly provided with a rotating force arm 53 and a pressure arm 56 which are vertical to each other, the free end of the rotating force arm 53 is detachably connected with a clamp 55 for fixing an underwater propeller, and the size of the clamp 55 can be changed according to the size of the propeller to be measured. The two ends of the pressure gauge mounting seat 54 are also provided with long holes, and the long holes on the two sides are respectively fixed on the second mounting seats 24 of the two cross beams 3 through bolts. The pressure gauge 4 is fixed to the pressure gauge mounting seat 54, and when the rotating shaft 52 rotates, the free end of the pressure arm 56 can press against the pressure gauge 4. The pressure gauge 4 can be adjusted by arranging the long hole on the pressure gauge mounting seat 54, so that the pressure arm 56 can accurately press on the pressure gauge 4.
Through bolted connection, realize that thrust accredited testing organization 5's position is adjustable to can simulate the propeller and intake the environment of side and play water side under water. Further, the length of the rotating arm 53 and the pressure arm 56 can be adjusted, and the adjustment in this embodiment is manual adjustment. The rotating arm 53 and the pressure arm 56 both comprise an internal thread through hole 57 and a plurality of groups of short pipes 58 with the same length and pipe threads at two ends, and the total length of the short pipes can be adjusted by only adjusting the number of the short pipes 58. Thus, the environment of the simulated propeller when the simulated propeller is close to the water bottom can be realized.
The pressure gauge mounting base 54 is mounted on the pressure gauge 4 at a level lower than the level of the shaft 52 to ensure that the pressure arm 56 is in a horizontal position after pressing against the surface of the pressure gauge 4. Because the pressure arm 56 is only in a horizontal position, it is not necessary to add a trigonometric function resulting from the angle of the arm angle (which is very difficult to read) to convert thrust from pressure readings.
The working principle of this embodiment is as follows:
firstly, injecting clear water with enough height into a pool 1, respectively installing a walking platform 2 and a span beam 3 on the pool 1, installing and adjusting a thrust testing mechanism 5 to a proper position, and finally fixing the positions of the walking platform 2 and the span beam 3 through bolts to ensure that the whole mechanism is rigidly connected;
then the fixing bolts at the two sides of the pressure gauge mounting base 54 are loosened, and the pressure gauge 4 is pulled towards the direction far away from the rotating shaft 52 until the distance is enough to pull the arm of force to rotate out of the water. Then the hoop 55 is pulled out of the water surface through the rotating force arm 53, the hoop 55 is loosened, the hoop 55 is screwed after the propeller is installed, the propeller is completely fixed at the tail end of the rotating force arm 53 and then reversely rotates the rotating force arm 53 to enter water, meanwhile, the pressure gauge installation seat 54 is pulled until the pressure arm 56 can accurately press on the pressure gauge 4, and finally the pressure gauge installation seat 54 is fixed;
when the thruster is started, the thrust generated by the thruster acts on the rotating arm 53 and is transmitted to the pressure arm 56 through the rotating shaft 52, and finally acts on the pressure gauge 4, and the thrust of the thruster is converted by reading the pressure gauge 4 and multiplying by a factor (coefficient = the distance from the center of the rotating shaft 52 to the center of the thruster/the distance from the center of the rotating shaft 52 to the center of the pressure gauge 4).
Example 2
The principle of the present embodiment is similar to that of embodiment 1, except that the position adjustment of the walking board 2, the cross beam 3 and the thrust testing mechanism 5 and the length adjustment of the rotating arm 53 and the pressure arm 56 are all completed manually. For realizing automatic regulation, this embodiment all sets the slide rail seat with mount pad one 6 and mount pad two 24 to, has set up actuating mechanism one and actuating mechanism two simultaneously, walk platform 2 and span 3 length direction's both ends sliding connection on mount pad one 6, actuating mechanism one is used for the drive to walk platform 2 and span 3 and slide on mount pad one 6, bearing frame 51 and the equal sliding connection of pressure gauge mount pad 54 are on mount pad two 24, actuating mechanism two is used for driving bearing frame 51 and pressure gauge mount pad 54 to slide on mount pad two 24. The rotary arm 53 and the pressure arm 56 are both arranged into electric control telescopic cylinders, so that the automatic real-time adjustment of the underwater position of the whole set of mechanism can be realized.
The above-mentioned embodiments are merely illustrative of the inventive concept and are not intended to limit the scope of the invention, which is defined by the claims and the insubstantial modifications of the inventive concept can be made without departing from the scope of the invention.
Claims (10)
1. The utility model provides an underwater propulsor still water thrust test platform which characterized in that: the device comprises a water pool, a walking platform, a plurality of cross beams and a thrust testing mechanism, wherein a first mounting seat is arranged on the circumferential direction of the water pool, the walking platform and the cross beams are arranged above the water pool through the first mounting seat, and second mounting seats are arranged on two sides of the walking platform and the cross beams;
the thrust testing mechanism comprises a rotating shaft and a pressure gauge mounting seat, bearing seats used for being connected with a mounting seat II are arranged at two ends of the rotating shaft, a rotating force arm and a pressure arm are fixed on a shaft body of the rotating shaft, a clamp is arranged at the free end of the rotating force arm, two ends of the pressure gauge mounting seat are installed on the mounting seat II, a pressure gauge is fixed on the pressure gauge mounting seat, and the pressure gauge is located on the rotating track of the free end of the pressure arm.
2. The underwater propulsor hydrostatic thrust test platform of claim 1, wherein: the periphery of the pool is provided with a steel structure frame, and the first mounting seat is arranged on the steel structure frame beam.
3. The underwater propulsor hydrostatic thrust test platform of claim 1, wherein: the first mounting seat is a hole seat provided with a mounting hole, and both ends of the walking platform and the two ends of the span beam in the length direction are provided with long holes matched with the first mounting seat.
4. The underwater propulsor hydrostatic thrust test platform of claim 1, wherein: the device comprises a first driving mechanism, wherein the first mounting seat is a slide rail seat, the two ends of the walking platform and the two ends of the span beam in the length direction are connected to the first mounting seat in a sliding mode, and the first driving mechanism is used for driving the walking platform and the span beam to slide on the first mounting seat.
5. The underwater propulsor hydrostatic thrust test platform of claim 1, wherein: and the second mounting seat is a hole seat provided with a mounting hole, and the bearing seat and the pressure gauge mounting seat are provided with long holes matched with the second mounting seat.
6. The underwater propulsor hydrostatic thrust test platform of claim 1, wherein: the two-stage driving mechanism is characterized by comprising a second driving mechanism, wherein the second mounting seat is a sliding rail seat, the bearing seat and the pressure gauge mounting seat are connected to the second mounting seat in a sliding mode, and the second driving mechanism is used for driving the bearing seat and the pressure gauge mounting seat to slide on the second mounting seat.
7. The underwater propulsor hydrostatic thrust test platform of claim 1, wherein: the length of the rotating force arm and the pressure arm is adjustable.
8. The underwater propulsor hydrostatic thrust test platform of claim 7, wherein: the rotating force arm and the pressure arm both comprise an internal thread straight-through and a plurality of groups of short pipes with the same length and pipe threads at two ends.
9. The underwater propulsor hydrostatic thrust test platform of claim 7, wherein: the rotary force arm and the pressure arm are both electric control telescopic cylinders.
10. The underwater propulsor hydrostatic thrust test platform of claim 1, wherein: the pressure arm is in a horizontal position when pressed on the pressure gauge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110967440.4A CN113624387A (en) | 2021-08-23 | 2021-08-23 | Hydrostatic thrust test platform of underwater propulsor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110967440.4A CN113624387A (en) | 2021-08-23 | 2021-08-23 | Hydrostatic thrust test platform of underwater propulsor |
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| Publication Number | Publication Date |
|---|---|
| CN113624387A true CN113624387A (en) | 2021-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110967440.4A Pending CN113624387A (en) | 2021-08-23 | 2021-08-23 | Hydrostatic thrust test platform of underwater propulsor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114166398A (en) * | 2021-12-07 | 2022-03-11 | 中船重工(重庆)西南装备研究院有限公司 | Dead thrust test platform of shaftless propeller |
-
2021
- 2021-08-23 CN CN202110967440.4A patent/CN113624387A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114166398A (en) * | 2021-12-07 | 2022-03-11 | 中船重工(重庆)西南装备研究院有限公司 | Dead thrust test platform of shaftless propeller |
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