Underwater propeller device

Abstract

The utility model relates to the technical field of propellers, and particularly discloses an underwater propeller device which comprises a propeller assembly and a mechanical arm assembly, the propeller assembly comprises a first shell, an outer spline is arranged on the first shell, the mechanical arm assembly comprises a second shell and a stepping motor located in the second shell, and the outer spline is arranged on the second shell. An internal spline is arranged on the side, close to the first shell, of the second shell, the external spline is inserted into one end of the internal spline, an output shaft of the stepping motor is connected with the other end of the internal spline, the stepping motor can drive the propeller body to rotate and adjust the advancing direction through the internal spline and the external spline, and when the external spline is inserted into the internal spline, the external spline and the internal spline are mutually coupled. Connection stability is good, relative movement is not prone to being generated, and working efficiency is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of underwater propellers, in particular to an underwater propeller device. Background Art

[0002] An underwater thruster is a power device used to drive underwater equipment to move. It generally includes a thruster body and a mechanical arm. The thruster body is used to provide power to push the whole to move. The mechanical arm connects the thruster body and also drives the thruster body to turn and adjust the forward direction. Therefore, the thruster body is required to be rotatably set on the mechanical arm.

[0003] In the prior art, in order to achieve a rotatable connection between the thruster body and the robotic arm, a coupling or the like is conventionally used for connection. However, rotatably connected components such as couplings may produce a small relative movement, which may easily affect work efficiency. Summary of the invention

[0004] The present utility model is made in consideration of the above-mentioned problems. The purpose of the utility model is to provide an underwater thruster device, which is connected by a spline, and the connection is more stable, preventing relative displacement and avoiding affecting the working efficiency of the thruster.

[0005] In order to achieve the above object, the utility model provides an underwater propulsion device, comprising:

[0006] A propeller assembly, comprising a first housing and a first motor and a propeller located in the first housing, wherein the first housing has at least one opening, the propeller is connected to an output shaft of the first motor and faces the opening, and an external spline is provided on one side of the first housing;

[0007] A robotic arm assembly includes a second shell and a second motor located in the second shell. An internal spline that is compatible with the external spline is provided on a side of the second shell close to the first shell. The internal spline is rotatably arranged on the second shell. The external spline can be inserted into one end of the internal spline, and the output shaft of the second motor can be connected to the other end of the internal spline.

[0008] According to the above-mentioned underwater propulsion device, a motor installation area is provided in the second shell, and a channel which can be connected with the motor installation area is provided on the second shell, the internal spline has a first end and a second end, the first end of the internal spline can be rotatably installed in the channel, the second motor is installed in the motor installation area, the output shaft of the second motor can be connected with the second end of the internal spline, and the external spline can be inserted into the first end of the internal spline.

[0009] According to the above-mentioned underwater propeller device, a sealing ring is provided on the outer side of the second end of the inner spline, and the sealing ring can be attached to one end of the channel to seal the channel.

[0010] According to the underwater propeller device described above, a control area is further provided in the second shell, a PCB board is provided in the control area, the second motor is configured as a stepper motor, and the PCB board is electrically signal-connected to the stepper motor.

[0011] According to the above-mentioned underwater propeller device, the first motor is configured as a DC motor, and the DC motor is electrically connected to the PCB board via electric wires.

[0012] According to the underwater thruster device described above, the DC motor is fixed in the first shell through a base, the base is provided with a first threading hole, and the second shell is provided with a second threading hole. One end of the wire is connected to the DC motor, and the other end of the wire passes through the first threading hole and the second threading hole in sequence and is connected to the PCB board.

[0013] According to the underwater propulsion device described above, a accommodating cavity is provided in the first shell, the first motor and the propeller are both located in the accommodating cavity, and two openings are provided on the first shell, both openings are provided with hollow-shaped baffles, and the first shell is provided with multiple hollows to expose the accommodating cavity.

[0014] The utility model has the following beneficial effects:

[0015] 1. The connection between the thruster assembly and the mechanical arm assembly is achieved through the connection between the external spline and the internal spline. After the external spline and the internal spline are assembled, they will be coupled with each other. It is not easy for the external spline and the internal spline to have relative displacement, so the stability is better and the working efficiency of the thruster is avoided;

[0016] 2. A sealing ring is provided on the outer side of the second end of the inner spline, which can be used to seal the gap of the channel to prevent liquid from entering the robot arm along the channel and corroding the stepper motor;

[0017] 3. A plurality of hollows are provided on the first shell and are used to connect the accommodating cavity, so that when the propeller rotates, the liquid can flow smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the embodiment;

[0019] Figure 2 1 is a schematic diagram of assembling a DC motor, a propeller and a base of an embodiment;

[0020] Figure 3 is a cross-sectional view of a second housing of the embodiment;

[0021] Figure 4 It is a schematic diagram of the internal spline and external spline assembly structure of the embodiment.

[0022] In the figure:

[0023] 1. propeller assembly; 11. first shell; 111. external spline; 112. hollowing; 12. DC motor; 13. propeller; 14. base; 15. baffle;

[0024] 2. Robot arm assembly; 21. Second housing; 211. Internal spline; 212. Motor mounting area; 213. Control area; 214. Second threading hole; 215. Channel. DETAILED DESCRIPTION

[0025] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0026] like Figure 1-4 As shown, an underwater propeller device includes a propeller assembly 1 and a mechanical arm assembly 2. The propeller assembly 1 is used to push the underwater equipment as a whole to move, and the mechanical arm assembly 2 is used to connect the propeller assembly 1 and can drive the propeller assembly 1 to turn, thereby adjusting the travel direction of the underwater equipment.

[0027] Specifically, the propeller assembly 1 includes a first housing 11 and a first motor and a propeller 13 located in the first housing 11. The first housing 11 has at least one opening. The propeller 13 is connected to the output shaft of the first motor and faces the opening. An external spline 111 is provided on one side of the first housing 11. The mechanical arm assembly 2 includes a second housing 21 and a second motor located in the second housing 21. An internal spline 211 adapted to the external spline 111 is provided on one side of the second housing 21 close to the first housing 11. The internal spline 211 is rotatably arranged on the second housing 21, and the external spline 111 can be inserted into the internal spline 111. One end of the spline 211, the output shaft of the second motor can be connected to the other end of the inner spline 211, the first motor drives the propeller 13 to rotate, thereby providing power for displacement, driving the mechanical arm assembly 2 and the underwater equipment connected to the mechanical arm assembly 2 to displace, the output shaft of the second motor drives the inner spline 211 to rotate, and drives the outer spline 111 and the first shell 11 to rotate through the inner spline 211, thereby realizing the direction adjustment of the propeller assembly 1 and adjusting the forward direction, and when the outer spline 111 is inserted into the inner spline 211, they are coupled with each other, and relative movement is not easy to occur, thereby ensuring work efficiency.

[0028] Specifically, a motor mounting area 212 is provided in the second shell 21, and a channel 215 which can be connected to the motor mounting area 212 is provided on the second shell 21. The inner spline 211 has a first end and a second end. The first end of the inner spline 211 can be rotatably installed in the channel 215. The second motor is installed in the motor mounting area 212. The output shaft of the second motor can be connected to the second end of the inner spline 211. The outer spline 111 can be inserted into the first end of the inner spline 211. The channel 215 is used to provide support for the inner spline 211 so that it can rotate. At the same time, the second motor is accommodated by the motor mounting area 212 so that it is close to the inner spline 211, which is convenient for driving the inner spline 211 to rotate. When the inner spline 211 rotates, it will drive the outer spline 111 to rotate together.

[0029] In order to prevent water from corroding the second motor, a sealing ring is provided on the outer side of the second end of the inner spline 211. The sealing ring can be attached to one end of the channel 215 to seal the channel 215 to prevent liquid from flowing out of the gap in the channel and avoid corroding the output shaft of the second motor and the second motor body.

[0030] In order to control the second motor, a control area 213 is further provided in the second shell 21, and a PCB board is provided in the control area 213. The second motor is configured as a stepper motor, and the PCB board is electrically connected to the stepper motor. In this embodiment, a Bluetooth or other wireless receiving module can be provided on the PCB board. After the controller sends a signal, the PCB board can control the stepper motor to start or shut down through the signal, so as to accurately control the rotation angle of the thruster assembly 1.

[0031] Similarly, the first motor is set to be a DC motor 12, which is electrically connected to the PCB board through wires. The DC motor 12 is also controlled by the PCB board to turn on and off, and its rotation efficiency is controlled, thereby controlling the travel speed of the underwater equipment.

[0032] In order to facilitate the threading of the wires, the DC motor 12 is fixed in the first shell 11 through the base 14, the base 14 is provided with a first threading hole, and the second shell 21 is provided with a second threading hole 214. One end of the wire is connected to the DC motor 12, and the other end of the wire passes through the first threading hole and the second threading hole 214 in sequence and is connected to the PCB board.

[0033] In order not to increase resistance to the rotation of the propeller 13 and ensure smooth water flow, a accommodating cavity is provided in the first shell 11, and the first motor and the propeller 13 are both located in the accommodating cavity, and two openings are provided on the first shell 11, and baffles 15 in the shape of hollows 112 are provided on the two openings, and multiple hollows 112 are provided on the first shell 11 to expose the accommodating cavity. The multiple hollows 112 can ensure the smooth flow of water, avoid the resistance caused by the unsmooth water flow, and reduce the energy consumption of the propeller 13. At the same time, the baffle 15 can play a certain protective role on the propeller 13 and the first motor to avoid entanglement of debris.

[0034] The technical solution of the utility model is described in detail above in conjunction with the accompanying drawings, and the described embodiments are used to help understand the idea of ​​the utility model. The specific embodiments described herein are merely examples of the spirit of the utility model. A person skilled in the art of the utility model may make various modifications or supplements to the described specific embodiments or replace them in a similar manner, but this will not deviate from the spirit of the utility model or exceed the scope defined by the attached claims.

[0035] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0036] In addition, in the present invention, the descriptions of "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0037] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

Claims

1. An underwater propulsion device, characterized in that: include: A propeller assembly, comprising a first housing and a first motor and a propeller located in the first housing, wherein the first housing has at least one opening, the propeller is connected to an output shaft of the first motor and faces the opening, and an external spline is provided on one side of the first housing; A robotic arm assembly includes a second shell and a second motor located in the second shell. An internal spline that is compatible with the external spline is provided on a side of the second shell close to the first shell. The internal spline is rotatably arranged on the second shell. The external spline can be inserted into one end of the internal spline, and the output shaft of the second motor can be connected to the other end of the internal spline.

2. An underwater propulsion device according to claim 1, characterized in that: A motor mounting area is provided in the second shell, and a channel which can be connected to the motor mounting area is provided on the second shell, the internal spline has a first end and a second end, the first end of the internal spline can be rotatably installed in the channel, the second motor is installed in the motor mounting area, the output shaft of the second motor can be connected to the second end of the internal spline, and the external spline can be inserted into the first end of the internal spline.

3. An underwater propulsion device according to claim 2, characterized in that: A sealing ring is provided on the outer side of the second end of the inner spline, and the sealing ring can be attached to one end of the channel to seal the channel.

4. An underwater propulsion device according to claim 1, characterized in that: A control area is further provided in the second shell, a PCB board is provided in the control area, the second motor is configured as a stepper motor, and the PCB board is electrically signal-connected to the stepper motor.

5. An underwater propulsion device according to claim 4, characterized in that: The first motor is configured as a DC motor, and the DC motor is electrically connected to the PCB board via wires.

6. An underwater propulsion device according to claim 5, characterized in that: The DC motor is fixed in the first shell through a base, a first threading hole is provided on the base, and a second threading hole is provided on the second shell. One end of the wire is connected to the DC motor, and the other end of the wire passes through the first threading hole and the second threading hole in sequence and is connected to the PCB board.

7. An underwater propulsion device according to claim 1, characterized in that: A accommodating cavity is provided in the first shell, the first motor and the propeller are both located in the accommodating cavity, and the first shell is provided with two openings, both openings are provided with hollow-shaped baffles, and the first shell is provided with multiple hollows to expose the accommodating cavity.

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