Dynamic instrument and method for testing performance of azimuth propeller

Abstract

A dynamometer and method for testing the performance of an azimuth thruster, relating to the field of measurement. The dynamometer for testing the performance of an azimuth thruster comprises a mounting module and a pod module. The mounting module comprises a platform base connected to a mounting base plate and a module cover. The platform base is connected to a rotatable rotating platform and a plurality of tension and pressure sensors connected to the mounting base plate. The module cover is provided with a coaxially connected bellows coupling and an intermediate connecting shaft, and a power source for driving the bellows coupling to rotate. The pod module comprises a pod housing, a horizontal transmission shaft connected in sequence, a push-torque integrated sensor and a propeller mounting shaft, a vertical transmission shaft connected to the horizontal transmission shaft, and a transmission sleeve sleeved on the vertical transmission shaft. The transmission sleeve is connected to the pod housing. The transmission sleeve and the transmission sleeve can respectively pass through the mounting base plate, the platform base, and the rotating platform and then be connected to the rotating platform and the intermediate connecting shaft. The dynamometer for testing the performance of an azimuth thruster can comprehensively detect the mechanical properties of an azimuth thruster.

Description

Technical Field

[0001] The present application relates to the field of measurement, and in particular to a dynamometer and method for testing the performance of an azimuth thruster. Background Art

[0002] An azimuth thruster is a propeller that uses a transmission mechanism such as an umbrella gear device and a worm gear device to enable the propeller to rotate 360 ​​degrees around the vertical axis. It has the dual functions of propulsion and ship control. The azimuth thruster can arbitrarily change the direction of thrust as the position changes, allowing the ship to turn around and advance and retreat freely on the spot, greatly improving maneuverability and maneuverability. Ships equipped with azimuth thrusters eliminate the need for rudders and shaft systems, which can save a large amount of cabin space. Ships equipped with azimuth thrusters (pods) have good maneuverability and do not need to reverse the main engine when the ship moves backward, which has led to widespread promotion.

[0003] For the study of the hydrodynamic performance of azimuth propulsion (pods), there is no suitable experimental measurement equipment to facilitate the research. Open-water performance tests of azimuth propulsion (pods) and self-propulsion tests of ship models equipped with azimuth propulsion (pods) lack complete experimental measurement equipment to assist in the research. Currently, the method is basically achieved by using ducted propeller testing. However, this test method involves the addition of a shaft system, which affects the measurement results. In addition, in some cases where the propeller bow is tilted due to layout requirements, the extended line of the propeller axis does not intersect with the hull. Even using the ducted propeller test method, the propeller cannot be powered, making the measurement impossible. Summary of the Invention

[0004] The purpose of this application is to provide a dynamometer and method for testing the performance of an azimuth propeller, which has the advantages of easy loading and unloading and high testing efficiency, can comprehensively measure the force conditions of the azimuth propeller during operation, and at the same time has the normal functions of the azimuth propeller.

[0005] This application is implemented as follows:

[0006] The present application provides a dynamometer for testing the performance of an azimuth thruster, which comprises:

[0007] The mounting module includes a mounting base, a platform base connected to the mounting base, and a module cover tube. The platform base is connected to a rotatable rotating platform and a rotating mechanism for driving the rotating platform to rotate. A bellows coupling and an intermediate connecting shaft connected to the bellows coupling are provided in the module cover tube. The intermediate connecting shaft is provided with a connecting hole. The module cover tube is connected to a power source for driving the bellows coupling to rotate. A plurality of tension and pressure sensors are connected between the mounting base and the platform base. The mounting base, the platform base, and the rotating platform are respectively provided with coaxially arranged base plate holes, platform holes, and rotating holes.

[0008] The pod module includes a pod housing, a horizontal transmission shaft rotatably connected to the pod housing, a push-torque sensor connected to the horizontal transmission shaft, a propeller mounting shaft connected to the push-torque sensor, a vertical transmission shaft with one end extending through the pod housing, and a transmission sleeve sleeved on the vertical transmission shaft. The horizontal transmission shaft and the vertical transmission shaft are connected by a pair of meshing bevel gears, and the transmission sleeve is connected to the pod housing.

[0009] Among them, the transmission sleeve is configured to be inserted into the rotating hole through the bottom plate hole and the platform hole and then be detachably connected to the rotating platform; when the transmission sleeve is connected to the rotating platform, the vertical transmission shaft is inserted into and clamped into the connecting hole of the middle connecting shaft.

[0010] In some optional embodiments, the top of the module cover is connected to a projectile top plate, and an orthogonal connection frame is provided at the bottom of the projectile top plate. The two oppositely arranged side edges of the orthogonal connection frame are respectively connected to the projectile top plate through upper spring plates, and the other two oppositely arranged side edges of the orthogonal connection frame are respectively connected to the platform base through lower spring plates.

[0011] In some optional implementation schemes, a thrust rod seat corresponding to the tension and pressure sensors is provided on the platform base, the thrust rod seat is provided with a slide groove and a thrust rod sliding through the slide groove, the thrust rod is threadedly connected to a thrust zeroing bolt for pressing the thrust rod seat, and the two ends of the tension and pressure sensor are respectively connected to the platform base and the corresponding thrust rod.

[0012] In some optional embodiments, each thrust rod seat is connected to a zero adjustment card via at least two connecting bolts. When the connecting bolts rotate, the corresponding zero adjustment card moves axially along the thrust rod to press or stop pressing the thrust rod.

[0013] In some optional embodiments, the rotating platform is threadedly connected to a plurality of locking bolts that can move radially thereof; after the transmission sleeve is inserted into the rotating hole, the locking bolts move radially along the rotating platform when rotating to connect or separate the transmission sleeve and the rotating platform by threading or disengaging the transmission sleeve.

[0014] In some optional embodiments, a slip ring is provided on the fixed sleeve on the horizontal transmission shaft, and a brush that slides with the slip ring is provided on the inner wall of the pod shell. The slip ring is electrically connected to the push-torque integrated sensor, and the brush is connected to a brush signal line that passes through the pod shell.

[0015] In some optional implementation schemes, an electrical sealing box is provided in the pod shell, the horizontal transmission shaft and the push-torque integrated sensor are provided in the electrical sealing box, the propeller mounting shaft and the vertical transmission shaft can be rotatably passed through the electrical sealing box respectively, and the electrical sealing box is provided with a watertight joint for extending the power brush signal line.

[0016] The present application also provides a method for testing the performance of an azimuth propeller, which is performed using the aforementioned azimuth propeller performance test dynamometer and includes the following steps:

[0017] Fix the mounting base of the mounting module to the ship model, insert the transmission sleeve of the pod module through the base plate holes and the platform holes on the mounting base and the platform base in sequence, and then insert it into the rotating hole on the rotating platform, and then detachably connect it to the rotating platform, so that the vertical transmission shaft is inserted into and clamped into the connecting hole of the middle connecting shaft;

[0018] The control power source drives the bellows coupling to rotate, driving the intermediate connecting shaft to rotate, causing the vertical transmission shaft connected to the connecting hole to rotate and driving the horizontal transmission shaft to rotate through the meshing bevel gears, causing the horizontal transmission shaft to drive the push-torque integrated sensor and the propeller mounting shaft to rotate, so that the propeller installed on the propeller mounting shaft works. At the same time, the control rotation mechanism drives the rotating platform to rotate, driving the transmission sleeve and the pod housing to rotate, so as to control the propeller to rotate around the vertical axis.

[0019] Receive data detected by the pull-pressure sensor and the push-torsion integrated sensor.

[0020] The beneficial effects of the present application are: the azimuth propeller performance test dynamometer and method provided in the present application include a detachably connected installation module and a pod module, which can facilitate the operator to connect the installation module to the ship model and install the propeller to the pod module respectively, and then detachably connect the pod module to the installation module for testing, thereby facilitating loading and unloading to improve test efficiency, and at the same time being able to measure the propeller forward thrust, torque and the forward thrust and lateral thrust of the propeller to a fixed position or a test ship when the azimuth propeller is working, for open water performance test and self-propulsion test of the azimuth propeller, and at the same time have the normal function of the azimuth propeller and can be used for ship manipulation experiments, unmanned control ships and unmanned driving technology research. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 A schematic diagram of the structure of a dynamometer for testing the performance of an azimuth thruster provided in an embodiment of the present application from a first perspective;

[0023] Figure 2 A schematic diagram of the structure of a dynamometer for testing the performance of an azimuth thruster provided in an embodiment of the present application from a second perspective;

[0024] Figure 3 A schematic diagram of the structure of the azimuth propeller performance test dynamometer provided in an embodiment of the present application from a third perspective;

[0025] Figure 4 A schematic diagram of the structure of the azimuth propeller performance test dynamometer provided in an embodiment of the present application with some pod housings and propellers omitted;

[0026] Figure 5 A schematic diagram of the structure of the azimuth thruster performance test dynamometer provided in an embodiment of the present application, with some module covers omitted;

[0027] Figure 6 A schematic cross-sectional view of the dynamometer for testing the performance of an azimuth thruster according to an embodiment of the present application.

[0028] In the figure: 100, mounting base; 101, base plate hole; 110, platform base; 111, platform hole; 120, module cover; 121, transmitter; 130, rotating platform; 131, rotating hole; 132, locking bolt; 140, bellows coupling; 150, intermediate connecting shaft; 151, connecting hole; 160, power source; 170, tension and pressure sensor; 180, projectile top plate; 181, orthogonal connecting frame; 182, upper spring plate; 183, lower spring plate; 190, thrust rod seat ;191. Slide groove;192. Thrust rod;193. Thrust zeroing bolt;194. Connecting bolt;195. Zeroing card plate;210. Pod shell;220. Horizontal transmission shaft;221. Bevel gear;230. Push-torque integrated sensor;231. Sensor cover;240. Vertical transmission shaft;250. Propeller mounting shaft;260. Transmission sleeve;270. Slip ring;280. Brush;290. Electrical sealing box;291. Watertight joint;300. Propeller;310. Spinner cap. DETAILED DESCRIPTION

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in the present application without creative work are within the scope of protection of the present application.

[0031] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0032] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of this application is typically placed when in use. These terms are intended only to facilitate the description of this application and simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0033] Furthermore, terms such as "horizontal," "vertical," and "overhanging" do not necessarily imply that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0034] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0035] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0036] The following is a further detailed description of the characteristics and performance of the azimuth propeller performance test dynamometer and method of the present application in conjunction with the embodiments.

[0037] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6 As shown, the embodiment of the present application provides a full-rotation propeller performance test dynamometer, which includes a detachably connected mounting module and a pod module; wherein the mounting module includes a mounting base plate 100, the top surface of the mounting base plate 100 is connected to a platform base 110 and a module cover tube 120 covered on the platform base 110, and a mounting cavity is formed between the module cover tube 120 and the mounting base plate 100, the top of the platform base 110 is connected to a rotating platform 130 that can rotate around a vertical axis and a rotating mechanism for driving the rotating platform 130 to rotate, the rotating mechanism includes a rotating motor and a transmission gear set, the outer wall of the rotating platform 130 is provided with a gear ring, and the output shaft of the rotating motor is connected to the rotating platform 130. The module cover 120 is provided with a bellows coupling 140 and an intermediate connecting shaft 150 coaxially connected to the bellows coupling 140, and a connecting hole 151 is provided at the bottom of the intermediate connecting shaft 150. The top of the module cover 120 is connected to a power source 160 for driving the bellows coupling 140 to rotate. Two tension and pressure sensors 170 are connected between the mounting base 100 and the platform base 110. The platform base 110 is provided with a thrust rod seat 190 corresponding to the tension and pressure sensors 170. The thrust rod seat 190 is provided with a slide groove 191 and a thrust rod 192 sliding through the slide groove 191. The thrust rod 192 is screwed The thread is connected with a thrust zeroing bolt 193. When the thrust zeroing bolt 193 rotates, it moves axially along the corresponding thrust rod 192 to press or stop pressing the thrust rod seat 190. Each thrust rod seat 190 is connected to a zeroing card plate 195 through two connecting bolts 194. The connecting bolts 194 and the thrust rod 192 are arranged in parallel. When the connecting bolts 194 rotate, they move axially to drive the corresponding zeroing card plate 195 to move axially along the connecting bolts 194 through the bolt head to press or stop pressing the thrust rod 192. The two ends of the tension pressure sensor 170 are respectively connected to the platform base 110 and the corresponding thrust rod 192. The top of the module cover 120 is connected to the elastic body top plate 18 0, an orthogonal connection frame 181 is provided at the bottom of the projectile top plate 180, and two oppositely arranged side edges of the orthogonal connection frame 181 are respectively connected to the projectile top plate 180 through upper spring plates 182, and the other two oppositely arranged side edges of the orthogonal connection frame 181 are respectively connected to the platform base 110 through lower spring plates 183; the mounting base 100, the platform base 110 and the rotating platform 130 are respectively provided with a base plate hole 101, a platform hole 111 and a rotating hole 131 coaxially arranged from bottom to top; the module cover tube 120 is connected to a transmitter 121. In this embodiment, the power source 160 is a right-angle gear box whose output shaft is connected to the bellows coupling 140.

[0038] The pod module includes a pod shell 210, an electrical sealing box 290 fixedly arranged in the pod shell 210, a horizontal transmission shaft 220 arranged horizontally and rotatably arranged in the electrical sealing box 290, a push-torsion integrated sensor 230 arranged in the electrical sealing box 290 and coaxially connected to the horizontal transmission shaft 220, a propeller mounting shaft 250 with one end passing through the pod shell 210 and the electrical sealing box 290 and coaxially connected to the push-torsion integrated sensor 230, a vertical transmission shaft 240 vertically arranged after the top passes through the pod shell 210 and the electrical sealing box 290, and a transmission sleeve 260 sleeved on the vertical transmission shaft 240. The drive shaft 240 is connected to the pod housing 210 through a pair of meshing bevel gears 221. The transmission sleeve 260 is connected to the pod housing 210. A slip ring 270 is fixedly mounted on the horizontal drive shaft 220. A brush 280 is provided on the inner wall of the pod housing 210, which slides with the slip ring 270. The slip ring 270 is electrically connected to the push-torque sensor 230. The brush 280 is connected to a brush signal line. The electrical sealing box 290 is provided with a watertight connector 291 for extending the brush signal line. The electrical sealing box 290 also includes a sensor shield 231 that is mounted on the outside of the push-torque sensor 230. The brush signal line and the signal line of the tension and pressure sensor 170 are respectively connected to the transmitter 121. The propeller 300 is fixedly mounted on the propeller mounting shaft 250. A spinner cap 310 is also connected to the end of the propeller mounting shaft 250 away from the push-torque sensor 230 to fix the axial position of the propeller 300.

[0039] Among them, the transmission sleeve 260 can be inserted into the rotating hole 131 through the base plate hole 101 and the platform hole 111 and then be detachably connected to the rotating platform 130. The rotating platform 130 is threadedly connected with four locking bolts 132 that can move radially thereof, and the four locking bolts 132 are arranged at intervals along the circumference of the rotating platform 130; after the transmission sleeve 260 is inserted into the rotating hole 131, the locking bolts 132 move radially along the rotating platform 130 when rotating to connect or disconnect the transmission sleeve 260 to connect or separate the transmission sleeve 260 and the rotating platform 130 by threading; when the transmission sleeve 260 is connected to the rotating platform 130, the vertical transmission shaft 240 is inserted into and clamped in the connecting hole 151 of the intermediate connecting shaft 150, so that when the intermediate connecting shaft 150 rotates around the axis, the clamped vertical transmission shaft 240 is driven to rotate synchronously through the connecting hole 151.

[0040] The present application also provides a method for testing the performance of an azimuth propeller, which is performed using the aforementioned azimuth propeller performance test dynamometer and includes the following steps:

[0041] Holes are opened in advance on the ship model for the transmission sleeve 260 and the vertical transmission shaft 240 to pass through, and PVC pipes are installed to prevent water leakage. The mounting base 100 of the mounting module is fixed to the ship model with bolts. The propeller 300 is installed on the propeller mounting shaft 250 of the pod module, and the propeller cap 310 is installed on the propeller mounting shaft 250 to fix the propeller 300. Then, the transmission sleeve 260 of the pod module is passed through the opening from the bottom of the ship model and then inserted through the bottom plate hole 101 and the platform hole 111 on the mounting base 100 and the platform base 110 in sequence. The rotating hole 131 on the rotating platform 130 is inserted and the top of the vertical transmission shaft 240 is clamped into the connection hole 151 of the intermediate connecting shaft 150. The rotating platform 130 is then rotated through the three locking bolts 132 connected by threads, so that the three locking bolts 132 move radially along the rotating platform 130 to press against the transmission sleeve 260 to lock the transmission sleeve 260 and the rotating platform 130. A power motor is fixed to the top of the module cover 120, and the output shaft of the power motor is connected to the input end of the right-angle gearbox serving as the power source 160 using a coupling.

[0042] The power motor is controlled to start, and the bellows coupling 140 is driven to rotate through the power source 160, driving the intermediate connecting shaft 150 to rotate, so that the vertical transmission shaft 240 engaged with the connecting hole 151 rotates and drives the horizontal transmission shaft 220 to rotate through a pair of meshing bevel gears 221, so that the horizontal transmission shaft 220 drives the push-torque integrated sensor 230 and the propeller mounting shaft 250 to rotate, so that the propeller installed on the propeller mounting shaft 250 works. At the same time, the output shaft of the rotating motor in the rotating mechanism is controlled to rotate, and the gear ring on the outer wall of the rotating platform 130 is driven to rotate through the transmission gear set, thereby driving the rotating platform 130 to rotate, driving the transmission sleeve 260 and the pod housing 210 to rotate, so as to control the propeller to rotate around the vertical axis.

[0043] An external data collector is connected to the tension and pressure sensor 170 and the brush signal line via a data line, and the data collector is connected to the transmitter 121 to receive data detected by the tension and pressure sensor 170 and the push-twist integrated sensor 230 .

[0044] The full-rotation propeller performance test dynamometer and method provided in the embodiment of the present application include a detachably connected installation module and a pod module, which can facilitate the operator to connect the installation base plate 100 of the installation module to the ship model and install the propeller on the pod module respectively, and then insert the vertical transmission shaft 240 and the transmission sleeve 260 of the pod module through the base plate hole 101 and the platform hole 111 of the installation base plate 100 and the platform base 110 and then insert them into the rotation hole 131 of the rotating platform 130, and then rotate the locking bolt 132 connected to the rotating platform 130 to make the locking bolt 132 move radially along the rotating platform 130 to press the transmission sleeve 260, and then connect and fix the transmission sleeve 260 and the rotating platform 130 to carry out the test, thereby facilitating loading and unloading to improve the test. Test efficiency, at the same time, during the test, the power source 160 is used to drive the bellows coupling 140 to rotate and drive the intermediate connecting shaft 150 to rotate, so that the vertical transmission shaft 240 connected to the connecting hole 151 rotates and drives the horizontal transmission shaft 220 to rotate through a pair of meshing bevel gears 221, so that the horizontal transmission shaft 220 drives the push-torque integrated sensor 230 and the propeller mounting shaft 250 to rotate, so that the propeller installed on the propeller mounting shaft 250 works, and at the same time, the rotation mechanism is controlled to drive the rotating platform 130 to rotate, drive the transmission sleeve 260 and the pod shell 210 to rotate to control the propeller to rotate around the vertical axis, so that the thrust and torque generated when the propeller works are detected by the push-torque integrated sensor 230, and the push-torque integrated sensor 230 converts the detected data The data signal is transmitted to the slip ring 270 fixed on the outer wall of the horizontal transmission shaft 220 through the data line passing through the inner hole of the horizontal transmission shaft 220, and the detection signal line is led out to the collector through the watertight joint 291 set on the electrical sealing box 290 through the brush 280 that slides with the slip ring 270. At the same time, the positive thrust generated by the rudder propeller module as a whole and the lateral force generated in most cases will be transmitted to the platform base 110 through the rotating platform 130. Since the platform base 110 is connected to the thrust rod 192 fixed on the thrust rod seat 190 through the pull-pressure sensor 170, the platform base 110 is connected to the top plate 180 of the projectile and the module cover tube 120 through the lower spring piece 183, the orthogonal connecting frame 181 and the upper spring piece 182, so that the platform base 110 produces The generated micro-deformation displacements in the horizontal and vertical directions are overcome and responded to by the thrust rod 192 and the tension and pressure sensor 170, so that the tension and pressure sensor 170 in the response direction senses the two forces in the horizontal and vertical directions at the corresponding position and measures them, and the signal output value detected by the tension and pressure sensor 170 is collected by the instrument. The full-rotation propeller performance test dynamometer and method provided in the embodiment of the present application can measure the propeller forward thrust, torque and the forward thrust and lateral thrust of the propeller to a fixed position or a test ship when the full-rotation propeller is working, so as to be used for the open water performance test and self-propulsion test of the full-rotation propeller, and at the same time, it has the normal function of the full-rotation propeller and can be used for ship manipulation experiments, unmanned control ships and unmanned driving technology research.

[0045] In addition, the platform base 110 is provided with a thrust rod seat 190 corresponding to the tension and pressure sensor 170 one by one, and the thrust rod seat 190 is provided with a slide groove 191 and a thrust rod 192 sliding through the slide groove 191. The thrust rod 192 is connected to a thrust zeroing bolt 193 through a thread. When the thrust zeroing bolt 193 rotates, it moves axially along the corresponding thrust rod 192 to press or stop pressing the thrust rod seat 190. Each thrust rod seat 190 is connected to a zeroing card plate 195 through two connecting bolts 194. The connecting bolts 194 and the thrust rod 192 are arranged in parallel. When the connecting bolts 194 rotate, they move axially to drive the corresponding zeroing card plate 195 along the axial direction of the connecting bolt 194 through the bolt head. Moving to press or stop pressing the thrust rod 192 can facilitate the operator to move the thrust rod 192 along the slide groove 191 to pull up the pull pressure sensor 170 to return the detection value of the pull pressure sensor 170 to zero, and then the thrust zeroing bolt 193 and the connecting bolt 194 can be rotated to make the thrust zeroing bolt 193 move axially along the thrust rod 192 to press the thrust rod seat 190 to limit the thrust rod 192 to one end close to the thrust rod seat 190, and after the two connecting bolts 194 move axially, push the zeroing card 195 to move the thrust rod 192 away from one end of the thrust rod seat 190, thereby fixing the position of the thrust rod 192 to keep the initial detection value of the pull pressure sensor 170 at zero.

[0046] The embodiments described above are part of the embodiments of the present application, rather than all of the embodiments. The detailed description of the embodiments of the present application is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

Claims

1. A dynamometer for testing the performance of an azimuth propeller, characterized in that: It includes: The mounting module comprises a mounting base, a platform base connected to the mounting base, and a module cover cylinder, the platform base being connected to a rotatable rotating platform and a rotating mechanism for driving the rotating platform to rotate, a bellows coupling and an intermediate connecting shaft connected to the bellows coupling being provided in the module cover cylinder, the intermediate connecting shaft being provided with a connecting hole, the module cover cylinder being connected to a power source for driving the bellows coupling to rotate, a plurality of tension and pressure sensors being connected between the mounting base and the platform base, the mounting base plate, the platform base, and the rotating platform being respectively provided with coaxially arranged base plate holes, platform holes, and rotating holes; A pod module includes a pod housing, a horizontal transmission shaft rotatably connected to the pod housing, a push-torque sensor connected to the horizontal transmission shaft, a propeller mounting shaft connected to the push-torque sensor, a vertical transmission shaft with one end extending through the pod housing, and a transmission sleeve sleeved on the vertical transmission shaft, wherein the horizontal transmission shaft and the vertical transmission shaft are connected by a pair of meshing bevel gears, and the transmission sleeve is connected to the pod housing; Wherein, the transmission sleeve is configured to be inserted into the rotating hole through the bottom plate hole and the platform hole and then be detachably connected to the rotating platform; when the transmission sleeve is connected to the rotating platform, the vertical transmission shaft is inserted into and clamped into the connecting hole of the intermediate connecting shaft.

2. The azimuth propeller performance test dynamometer according to claim 1, characterized in that: The top of the module cover is connected to the elastic body top plate, and the bottom of the elastic body top plate is provided with an orthogonal connection frame. The two oppositely arranged side edges of the orthogonal connection frame are respectively connected to the elastic body top plate through upper spring plates, and the other two oppositely arranged side edges of the orthogonal connection frame are respectively connected to the platform base through lower spring plates.

3. The azimuth propeller performance test dynamometer according to claim 1, characterized in that: The platform base is provided with a thrust rod seat corresponding to the tension and pressure sensors one by one. The thrust rod seat is provided with a slide groove and a thrust rod sliding through the slide groove. The thrust rod is threadedly connected to a thrust zeroing bolt for pressing the thrust rod seat. The two ends of the tension and pressure sensor are respectively connected to the platform base and the corresponding thrust rod.

4. The azimuth propeller performance test dynamometer according to claim 3, characterized in that: Each of the thrust rod seats is connected to a zero adjustment card plate via at least two connecting bolts. When the connecting bolts rotate, the corresponding zero adjustment card plate is driven to move axially along the thrust rod to press or stop pressing the thrust rod.

5. The azimuth propeller performance test dynamometer according to claim 1, characterized in that: The rotating platform is threadedly connected to a plurality of locking bolts that can move radially thereof; after the transmission sleeve is inserted into the rotating hole, the locking bolts move radially along the rotating platform when rotating to connect or disconnect the transmission sleeve and the rotating platform by threading.

6. The azimuth propeller performance test dynamometer according to claim 1, characterized in that: A slip ring is provided on the fixed sleeve of the horizontal transmission shaft, and a brush that slides with the slip ring is provided on the inner wall of the pod shell. The slip ring is electrically connected to the push-torque integrated sensor, and the brush is connected to a brush signal line that passes through the pod shell.

7. The azimuth propeller performance test dynamometer according to claim 6, characterized in that: An electrical sealing box is provided in the pod shell, the horizontal transmission shaft and the push-torque integrated sensor are provided in the electrical sealing box, the propeller mounting shaft and the vertical transmission shaft are rotatably passed through the electrical sealing box respectively, and the electrical sealing box is provided with a watertight joint for the brush signal line to extend out.

8. A method for testing the performance of an azimuth propeller, characterized in that: The method is carried out using a dynamometer for testing the performance of an azimuth propeller according to any one of claims 1 to 7, and comprises the following steps: Fix the mounting base of the mounting module on the ship model, insert the transmission sleeve of the pod module through the base plate holes and the platform holes on the mounting base and the platform base in sequence, insert it into the rotating hole on the rotating platform, and then detachably connect it to the rotating platform, so that the vertical transmission shaft is inserted into and clamped into the connecting hole of the middle connecting shaft; The power source is controlled to drive the bellows coupling to rotate, driving the intermediate connecting shaft to rotate, so that the vertical transmission shaft connected to the connecting hole rotates and drives the horizontal transmission shaft to rotate through the meshing bevel gears, so that the horizontal transmission shaft drives the push-torque integrated sensor and the propeller mounting shaft to rotate, so that the propeller mounted on the propeller mounting shaft works, and at the same time, the rotating mechanism is controlled to drive the rotating platform to rotate, driving the transmission sleeve and the pod housing to rotate, so as to control the propeller to rotate around the vertical axis; Receive data detected by the pull-pressure sensor and the push-torsion integrated sensor.

Images