An underwater propeller water-tightness testing mechanism

Abstract

This utility model discloses a watertightness testing mechanism for an underwater thruster, comprising a test frame, a test platform, a swing arm, a mounting plate, an X-axis drive device, and a Z-axis drive assembly. The test frame is mounted on a water tank, and the test platform is mounted on the test frame. The middle part of the swing arm is hinged to the test platform. The X-axis drive device is mounted on the test platform, and the upper end of the swing arm is connected to the drive end of the X-axis drive device. The lower end of the swing arm passes through the test frame. The Z-axis drive assembly is located near the lower end of the swing arm, and the drive end of the Z-axis drive assembly is connected to the mounting plate. The underwater thruster watertightness testing mechanism, through the swing arm, mounting plate, X-axis drive device, and Z-axis drive assembly, can smoothly and accurately control the swing angle and diving depth of the underwater thruster, thereby ensuring the accuracy and repeatability of the underwater thruster watertightness test. Furthermore, it realistically simulates the working state of the underwater thruster, avoiding the risk of water ingress due to vibration during actual dynamic use.

Description

Technical Field

[0001] This utility model relates to the field of underwater thruster testing equipment, and in particular to an underwater thruster watertightness testing mechanism. Background Technology

[0002] An underwater thruster is a device that provides power to underwater equipment, replacing human propulsion with mechanical power and significantly increasing underwater movement speed. In existing technologies, to ensure the long-term stable operation of underwater thrusters at a calibrated water depth and to prevent short circuits, corrosion, and damage to internal circuit components due to accidental water ingress, a watertightness test is required before shipment. However, existing watertightness testing equipment performs static tests and cannot accurately simulate the watertightness performance of underwater thrusters under operating conditions. This results in some underwater thrusters that pass static tests still facing the risk of water ingress during actual dynamic use due to factors such as vibration and attitude changes. Utility Model Content

[0003] The purpose of this invention is to propose a watertightness testing mechanism for underwater thrusters, so as to solve the problem that existing underwater thruster watertightness testing equipment cannot truly simulate the watertightness performance of underwater thrusters in working condition.

[0004] To achieve this objective, the present invention adopts the following technical solution: This utility model provides a watertightness testing mechanism for underwater thrusters, including a test frame, a test platform, a swing arm, a mounting plate, an X-axis drive device, and a Z-axis drive assembly; The test frame is erected on the water tank, and the test platform is set on the test frame; the middle part of the swing arm is hinged to the test platform; the X-axis drive device is set on the test platform, and the upper end of the swing arm is connected to the drive end of the X-axis drive device; the X-axis drive device is used to drive the swing arm to swing at both ends in the X-axis direction; the lower end of the swing arm passes through the test frame; the Z-axis drive assembly is set near the lower end of the swing arm, and the drive end of the Z-axis drive assembly is connected to the mounting plate; the Z-axis drive assembly is used to drive the mounting plate to move along the Z-axis direction; the mounting plate is provided with an underwater thruster mounting position.

[0005] In the underwater thruster watertightness testing mechanism, the Z-axis drive assembly includes a Z-axis drive device and a connecting plate. The Z-axis drive device is located on one side of the swing arm, and the drive end of the Z-axis drive device is connected to the connecting plate. The Z-axis drive device is connected to the mounting plate through the connecting plate.

[0006] In the underwater thruster watertightness testing mechanism, the Z-axis drive assembly further includes a slider and a connecting rod. The other side of the swing arm is provided with a guide groove along the Z-axis direction. The slider is slidably assembled in the guide groove. One end of the connecting rod is connected to the top surface of the connecting plate, and the other end of the connecting rod is connected to the slider.

[0007] The underwater thruster watertightness testing mechanism also includes a Y-axis drive assembly, which includes a Y-axis hinge seat and a Y-axis drive device. The top of the Y-axis hinge seat is connected to a connecting plate. The bottom of the Y-axis hinge seat is provided with a hinge member, and two hinge members are centrally located along the X-axis direction. The middle portions of both ends of the mounting plate in the X-axis direction are respectively hinged to the hinge members at their corresponding ends. The Y-axis drive device is located at one end of the Y-axis hinge seat in the Y-axis direction, and the drive end of the Y-axis drive device is hinged to the near end of one end of the mounting plate. The Y-axis drive device is used to drive the mounting plate to swing in the Y-axis direction.

[0008] In the underwater thruster watertightness testing mechanism, the test platform includes a fixed plate and a fixed hinge seat; the fixed plate is installed on the test frame and is provided with clearance holes; the X-axis drive device is disposed on the top surface of the fixed plate; the upper end of the swing arm passes through the clearance holes and is connected to the drive end of the X-axis drive device. The fixed hinge seat is disposed on the bottom surface of the fixed plate and is located on the outer periphery of the clearance hole; the middle part of the swing arm is hinged to the fixed hinge seat.

[0009] In the underwater thruster watertightness testing mechanism, the fixed hinge seat includes an integrally formed first hinge plate, a second hinge plate, and a first hinge shaft; the first hinge plate is disposed at one end of the clearance hole in the Y-axis direction, and the second hinge plate is disposed at the other end of the clearance hole in the Y-axis direction; the first hinge plate has a first through hole and a second through hole, one end of the first hinge shaft is fixed to the first through hole, and the other end of the first hinge shaft is fixed to the second through hole, and the swing arm is hinged to the fixed hinge seat through the first hinge shaft.

[0010] In the underwater thruster watertightness testing mechanism, the test frame includes a crossbeam and a support; the crossbeam is provided with a support at both ends near its ends; the support includes a connecting frame and a support connecting rod, the top of the connecting frame is connected to the crossbeam, the bottom of the connecting frame is connected to the support connecting rod, and the bottom of the support connecting rod is provided with an installation groove for embedding in the side wall of the pool. The test bench is mounted on a crossbeam frame, and the lower end of the swing arm passes through the crossbeam frame.

[0011] One of the technical solutions of this utility model can have the following beneficial effects: The underwater thruster watertightness testing mechanism, through its swing arm, mounting plate, X-axis drive device, and Z-axis drive assembly, can smoothly and accurately control the swing angle and diving depth of the underwater thruster, thereby ensuring the accuracy and repeatability of the underwater thruster watertightness test. Furthermore, it realistically simulates the working state of the underwater thruster, avoiding the risk of water ingress due to vibration, attitude changes, and other factors during actual dynamic use. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of one embodiment of the present utility model; Figure 2 yes Figure 1 A magnified view of a section at point A in the middle; Figure 3 This is a schematic diagram of the working state of one embodiment of the present invention; Figure 4 This is a schematic diagram of the hinge seat in one embodiment of the present invention; In the attached diagram: 1. Test frame; 2. Test platform; 3. Swing arm; 4. Mounting plate; 5. X-axis drive device. 11. Crossbeam frame; 12. Support bracket; 21. Fixed plate; 22. Fixed hinge seat; 61. Z-axis drive device; 62. Connecting plate; 63. Slider; 64. Connecting rod; 65. Guide groove; 71. Y-axis hinge seat; 72. Y-axis drive device; 73. Hinge component; Connecting frame 121, bracket connecting rod 122; mounting groove 123; clearance hole 210; first hinge plate 221, second hinge plate 222, first hinge shaft 223. Detailed Implementation

[0013] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0014] In the description of this utility model, it should be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" and "second" may explicitly or implicitly include one or more of these features, used to distinguish descriptive features, without any order or emphasis.

[0015] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0016] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0017] Please refer to Figures 1-4 This utility model provides a watertightness testing mechanism for underwater thrusters, including a test frame 1, a test platform 2, a swing arm 3, a mounting plate 4, an X-axis drive device 5, and a Z-axis drive assembly; The test frame 1 is mounted on the water tank, and the test platform 2 is mounted on the test frame 1. The middle part of the swing arm 3 is hinged to the test platform 2. The X-axis drive device 5 is mounted on the test platform 2, and the upper end of the swing arm 3 is connected to the drive end of the X-axis drive device 5. The X-axis drive device 5 is used to drive the swing arm 3 to swing at both ends in the X-axis direction. The lower end of the swing arm 3 passes through the test frame 1. The Z-axis drive assembly is located near the lower end of the swing arm 3, and the drive end of the Z-axis drive assembly is connected to the mounting plate 4. The Z-axis drive assembly is used to drive the mounting plate 4 to move along the Z-axis direction. The mounting plate 4 is provided with an underwater thruster mounting position.

[0018] Mounting plate 4 provides a mounting station for the underwater thruster. The X-axis drive unit 5 drives the swing arm 3 to swing, allowing the thruster, mounted at the end of the swing arm 3, to change its pitch angle in the water, simulating the real-world pitching and tilting motion of the underwater thruster. The Z-axis drive assembly controls the vertical movement of the underwater thruster, simulating its sealing performance at different depths. The depth that the underwater thruster watertightness testing mechanism can simulate is affected by the depth of the pool and the travel of the Z-axis drive assembly; these factors can be selected according to specific conditions. Test frame 1 is used to fix the entire mechanism to the pool, and test platform 2 is used to mount and fix the swing arm 3 and X-axis drive unit 5 to test frame 1.

[0019] During the watertightness test, the underwater thruster is first installed at the underwater thruster installation station. Then, the X-axis drive device 5 is controlled to swing at a specified angle, while the Z-axis drive component is controlled to move according to a specified stroke to simulate the working state of the underwater thruster. Subsequently, the underwater thruster is removed from the underwater thruster installation station and its exterior is wiped dry. Then, the outer shell is disassembled, and the interior of the underwater thruster is observed for any water stains. The watertightness test is then completed.

[0020] The underwater thruster watertightness testing mechanism, through the swing arm 3, mounting plate 4, X-axis drive device 5, and Z-axis drive assembly, can smoothly and accurately control the swing angle and diving depth of the underwater thruster, thereby ensuring the accuracy and repeatability of the underwater thruster watertightness test; and, it realistically simulates the working state of the underwater thruster, avoiding the risk of water ingress due to vibration, attitude changes, and other factors in actual dynamic use of the underwater thruster.

[0021] Specifically, the Z-axis drive assembly includes a Z-axis drive device 61 and a connecting plate 62. The Z-axis drive device 61 is disposed on one side of the swing arm 3. The drive end of the Z-axis drive device 61 is connected to the connecting plate 62. The Z-axis drive device 61 is connected to the mounting plate 4 through the connecting plate 62.

[0022] With the above structure, the connecting plate 62 is moved along the Z-axis by the Z-axis drive device 61, thereby driving the mounting plate 4 and the underwater thruster on the mounting plate 4 to move along the Z-axis.

[0023] Specifically, the Z-axis drive assembly further includes a slider 63 and a connecting rod 64. The other side of the swing arm 3 is provided with a guide groove 65 along the Z-axis direction. The slider 63 is slidably assembled in the guide groove 65. One end of the connecting rod 64 is connected to the top surface of the connecting plate 62, and the other end of the connecting rod 64 is connected to the slider 63.

[0024] The above structure, through the guide groove 65, slider 63 and connecting rod 64, plays a guiding role, preventing the connecting plate 62 and mounting plate 4 from moving in other directions, and enhancing the stability of the Z-axis drive assembly during Z-axis movement.

[0025] Preferably, it further includes a Y-axis drive assembly, which includes a Y-axis hinge seat 71 and a Y-axis drive device 72; the top of the Y-axis hinge seat 71 is connected to the connecting plate 62; the bottom of the Y-axis hinge seat 71 is provided with a hinge member 73, and two hinge members 73 are centrally arranged along the X-axis direction, and the middle portions of both ends of the mounting plate 4 in the X-axis direction are respectively hinged to the corresponding hinge member 73; the Y-axis drive device 72 is disposed at one end of the Y-axis hinge seat 71 in the Y-axis direction, and the driving end of the Y-axis drive device 72 is hinged to one end of the mounting plate 4 near the end, and the Y-axis drive device 72 is used to drive the mounting plate 4 to swing in the Y-axis direction.

[0026] The connecting rod 64 and the driving end of the Z-axis drive device 61 are respectively fixed to the top surface of the connecting plate 62. The connecting plate 62 drives the Y-axis hinge seat 71 to move. The connecting plate 62 can evenly apply tension or thrust to the Y-axis hinge seat 71 to avoid the center of gravity of the Y-axis hinge seat 71 from shifting to one side, which would cause structural deformation.

[0027] Y-axis drive device 72 is used to drive mounting plate 4 to swing in the Y-axis direction, thereby simulating the Y-axis tilt that occurs when an underwater thruster is working, which is closer to the working conditions of an underwater thruster and further simulates the working state of an underwater thruster.

[0028] Furthermore, the test platform 2 includes a fixed plate 21 and a fixed hinge seat 22; the fixed plate 21 is installed on the test frame 1, and the fixed plate 21 is provided with a clearance hole 210; the X-axis drive device 5 is disposed on the top surface of the fixed plate 21; the upper end of the swing arm 3 passes through the clearance hole 210 and is connected to the drive end of the X-axis drive device 5. The fixed hinge seat 22 is disposed on the bottom surface of the fixed plate 21, and the fixed hinge seat 22 is located on the outer periphery of the clearance hole 210; the middle part of the swing arm 3 is hinged to the fixed hinge seat 22.

[0029] In one specific embodiment of this utility model, when no test is performed, the extension line of the fixed connecting rod 64 is perpendicular to the central axis of the swing arm 3.

[0030] The fixing plate 21 serves to fix the fixed hinge seat 22 and the X-axis drive device 5 to the test frame 1. The fixed hinge seat 22 is used to fix the swing arm 3. The clearance hole 210 is used to provide clearance space to avoid interference between the upper end of the swing arm 3 and the fixing plate 21, which would cause measurement errors.

[0031] Furthermore, the fixed hinge seat 22 includes an integrally formed first hinge plate 221, a second hinge plate 222, and a first hinge shaft 223; the first hinge plate 221 is disposed at one end of the clearance hole 210 in the Y-axis direction, and the second hinge plate 222 is disposed at the other end of the clearance hole 210 in the Y-axis direction; the first hinge plate 221 is provided with a first through hole and a second through hole, one end of the first hinge shaft 223 is fixed to the first through hole, and the other end of the first hinge shaft 223 is fixed to the second through hole, and the swing arm 3 is hinged to the fixed hinge seat 22 through the first hinge shaft 223.

[0032] The first hinge plate 221 and the second hinge plate 222 cooperate to fix the first hinge shaft 223, so that the swing arm 3 is hinged to the fixed hinge seat 22 through the first hinge shaft 223. With the above structure, the movement of the swing arm 3 is smoother, reducing jamming, abnormal noise and wear problems caused by structural deformation or gaps.

[0033] Specifically, the test frame 1 includes a crossbeam frame 11 and a support 12; the crossbeam frame 11 is provided with a support 12 at both ends near its ends; the support 12 includes a connecting frame 121 and a support connecting rod 122, the top of the connecting frame 121 is connected to the crossbeam frame 11, the bottom of the connecting frame 121 is connected to the support connecting rod 122, and the bottom of the support connecting rod 122 is provided with a mounting groove 123, which is used to be embedded in the side wall of the pool; The test bench 2 is mounted on the crossbeam frame 11, and the lower end of the swing arm 3 passes through the crossbeam frame 11.

[0034] The crossbeam frame 11 is used to mount the test platform 2 and connects to the supports 12 on both sides. The supports 12 are used to install the underwater thruster watertightness testing mechanism as a whole in the water tank. The mounting groove 123 at the bottom of the support connecting rod 122 is used to embed into the side wall of the water tank, making the fixing structure of the support 12 more stable and preventing the underwater thruster watertightness testing mechanism from shifting due to the thrust of the underwater thruster watertightness testing mechanism during the test, which would affect the measurement accuracy. In practical applications, it can also be fixed to the side wall of the water tank using expansion bolts provided with the support connecting rod 122.

[0035] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without inventive effort, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A watertightness testing mechanism for underwater thrusters, characterized in that, Includes test fixture, test table, swing arm, mounting plate, X-axis drive unit and Z-axis drive assembly; The test frame is erected on the water tank, and the test platform is set on the test frame; the middle part of the swing arm is hinged to the test platform; the X-axis drive device is set on the test platform, and the upper end of the swing arm is connected to the drive end of the X-axis drive device; the X-axis drive device is used to drive the swing arm to swing at both ends in the X-axis direction; the lower end of the swing arm passes through the test frame; the Z-axis drive assembly is set near the lower end of the swing arm, and the drive end of the Z-axis drive assembly is connected to the mounting plate; the Z-axis drive assembly is used to drive the mounting plate to move along the Z-axis direction; the mounting plate is provided with an underwater thruster mounting position.

2. The underwater thruster watertightness testing mechanism according to claim 1, characterized in that, The Z-axis drive assembly includes a Z-axis drive device and a connecting plate. The Z-axis drive device is disposed on one side of the swing arm. The drive end of the Z-axis drive device is connected to the connecting plate. The Z-axis drive device is connected to the mounting plate through the connecting plate.

3. The underwater thruster watertightness testing mechanism according to claim 2, characterized in that, The Z-axis drive assembly also includes a slider and a connecting rod. The other side of the swing arm is provided with a guide groove along the Z-axis direction. The slider is slidably assembled in the guide groove. One end of the connecting rod is connected to the top surface of the connecting plate, and the other end of the connecting rod is connected to the slider.

4. The underwater thruster watertightness testing mechanism according to claim 3, characterized in that, It also includes a Y-axis drive assembly, which includes a Y-axis hinge base and a Y-axis drive device; the top of the Y-axis hinge base is connected to a connecting plate; the bottom of the Y-axis hinge base is provided with a hinge member, and two hinge members are centrally arranged along the X-axis direction. The middle portions of both ends of the mounting plate in the X-axis direction are respectively hinged to the hinge members at their corresponding ends; the Y-axis drive device is located at one end of the Y-axis hinge base in the Y-axis direction, and the drive end of the Y-axis drive device is hinged to the near end of one end of the mounting plate. The Y-axis drive device is used to drive the mounting plate to swing in the Y-axis direction.

5. The underwater thruster watertightness testing mechanism according to claim 1, characterized in that, The test bench includes a fixed plate and a fixed hinge seat; the fixed plate is mounted on the test frame and has clearance holes; the X-axis drive device is disposed on the top surface of the fixed plate; the upper end of the swing arm passes through the clearance holes and is connected to the drive end of the X-axis drive device. The fixed hinge seat is disposed on the bottom surface of the fixed plate and is located on the outer periphery of the clearance hole; the middle part of the swing arm is hinged to the fixed hinge seat.

6. The underwater thruster watertightness testing mechanism according to claim 5, characterized in that, The fixed hinge seat includes an integrally formed first hinge plate, a second hinge plate, and a first hinge shaft; the first hinge plate is disposed at one end of the clearance hole in the Y-axis direction, and the second hinge plate is disposed at the other end of the clearance hole in the Y-axis direction; the first hinge plate has a first through hole and a second through hole, one end of the first hinge shaft is fixed to the first through hole, and the other end of the first hinge shaft is fixed to the second through hole, and the swing arm is hinged to the fixed hinge seat through the first hinge shaft.

7. The underwater thruster watertightness testing mechanism according to claim 1, characterized in that, The test frame includes a crossbeam and a support; the crossbeam is provided with a support at both ends near its ends; the support includes a connecting frame and a support connecting rod, the top of the connecting frame is connected to the crossbeam, the bottom of the connecting frame is connected to the support connecting rod, and the bottom of the support connecting rod is provided with an installation groove for embedding in the side wall of the pool. The test bench is mounted on a crossbeam frame, and the lower end of the swing arm passes through the crossbeam frame.

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