A powertrain

Abstract

The present invention discloses a power assembly, which is installed in the body of a dredging robot and is used to provide driving force in the dredging robot. The power assembly includes a body water tank structure installed on the bottom surface of the body, a plurality of shock-absorbing pads are provided on the inner bottom surface of the body, a motor pump group is fixedly installed on the shock-absorbing end of the shock-absorbing pad for reducing the vibration of the motor pump group, the body water tank structure and the bottom surface of the body are both provided with tank openings at the same position, and the inner bottom surface of the body is provided with a cooling water tank cover for sealing the tank opening. In the present invention, the body water tank structure, the cooling water suction pipe, the cooling water pump, the cooling water inlet pipe and the cooling water return pipe form a closed internal circulation cooling system, which transfers the heat generated during the operation of the water-cooled motor to the cooling water. When the robot is operating normally, the body water tank structure is immersed in water, thereby transferring the heat to the external water body, forming an open cooling system.

Description

Technical Field

[0001] The present invention relates to the technical field of powertrain, and specifically relates to a powertrain. Background Art

[0002] The powertrain is the core component of the robot. All actions and automatic monitoring functions are completed by providing energy to the power unit. For the powertrain in underwater confined spaces, not only the power form should be considered, but also the cooling method and shock absorption and noise reduction. Existing powertrains in underwater confined spaces generally use an external cooling water pump and an open circulation system, that is, the surrounding water is directly pumped into the power unit through the cooling water pump. However, when the equipment space is limited and the water pump cannot be arranged or the water contains a lot of sand and gravel impurities, this solution has obvious defects, and the flow channel is easy to be blocked and easily rusted. Summary of the invention

[0003] The object of the present invention is to provide a power assembly to solve the cooling method and vibration and noise reduction problems proposed in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a power assembly installed in the body of a dredging robot for providing driving force in the dredging robot, the power assembly comprising a body water tank structure installed on the bottom surface of the body, a plurality of shock-absorbing pads are provided on the inner bottom surface of the body, a motor pump group is fixedly installed on the shock-absorbing end of the shock-absorbing pad to reduce the vibration of the motor pump group, the body water tank structure and the bottom surface of the body are both provided with tank openings at the same position, the inner bottom surface of the body is provided with a cooling water tank cover for sealing the tank opening, and the suction end of the motor pump group is fixedly connected to a cooling water suction pipe One end of the cooling water suction pipe is provided, and the other end of the cooling water suction pipe passes through the bottom surface of the vehicle body and extends into the interior of the vehicle body water tank structure, so as to absorb the cooling water in the vehicle body water tank structure; the output end of the motor pump group is provided with one end of a cooling water inlet pipe, and the other end of the cooling water inlet pipe is fixedly connected to the input end of the motor pump group, so as to circulate the cooling water in the motor pump group; the return end of the motor pump group is fixedly connected with one end of a cooling water return pipe, and the other end of the cooling water return pipe passes through the bottom surface of the vehicle body and extends into the interior of the vehicle body water tank structure, so as to recover the cooling water after absorbing heat into the vehicle body water tank structure.

[0005] Preferably, the motor pump group includes a water-cooled motor mounted on a shock-absorbing pad, the water-cooled motor is bolted to a bell-shaped cover at one end of the output shaft, the bell-shaped cover is bolted to a hydraulic oil pump at one end, the output shaft of the water-cooled motor is connected to the input shaft of the hydraulic oil pump via a coupling, one end of the hydraulic oil pump is bolted to a cooling water pump, the input shaft of the cooling water pump is connected to the output shaft of the hydraulic oil pump via a key, the suction end of the cooling water pump is connected to one end of a cooling water suction pipe, the output end of the cooling water pump is connected to one end of a cooling water inlet pipe, the other end of the cooling water inlet pipe is connected to the input end of the water-cooled motor, and the return end of the water-cooled motor is connected to one end of a cooling water return pipe.

[0006] Preferably, the side wall of the bell-shaped jar is penetrated with ventilation holes for dissipating heat.

[0007] Preferably, the vehicle body water tank structure is a welded closed water tank.

[0008] Preferably, the shock-absorbing pad is fixedly mounted on the inner bottom surface of the vehicle body via a mounting base.

[0009] Preferably, the shock-absorbing pad is a double-headed stud structure.

[0010] Compared with the prior art, the beneficial effects of the present invention are: a power assembly, when the cooling water pump is running, the cooling water suction pipe draws cooling water from the vehicle body water tank structure, enters the cooling water flow channel in the motor cavity through the cooling water inlet pipe, and then returns to the vehicle body water tank structure through the cooling water return pipe, the cooling water suction pipe and the cooling water return pipe are respectively arranged on both sides of the surface of the vehicle body water tank structure, ensuring that the cooling water has a sufficient flow distance in the vehicle body water tank structure, thereby enhancing the heat exchange effect.

[0011] The vehicle body water tank structure, cooling water suction pipe, cooling water pump, cooling water inlet pipe and cooling water return pipe form a closed internal circulation cooling system, which transfers the heat generated during the operation of the water-cooled motor to the cooling water. When the robot is operating normally, the vehicle body water tank structure is immersed in water, thereby transferring the heat to the external water body, forming an open cooling system.

[0012] In order to effectively fix the motor pump unit and reduce the vibration generated during the operation of the water-cooled motor, a mounting base with a strong elbow plate and a shock-absorbing pad are designed. The shock-absorbing pad is a double-headed stud structure, which can effectively reduce vibration transmission after installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of the motor pump unit of the present invention located inside the vehicle body;

[0014] Figure 2 It is a schematic cross-sectional structure diagram of one side of the vehicle body of the present invention;

[0015] Figure 3 It is a schematic diagram of the three-dimensional structure of the motor pump unit of the present invention.

[0016] In the figure: 201-body water tank structure, 202-shock-absorbing pad, 203-motor pump group, 2031-water-cooled motor, 2032-bell cover, 2033-hydraulic oil pump, 2034-cooling water pump, 204-cooling water tank cover, 205-cooling water suction pipe, 206-cooling water inlet pipe, 207-cooling water return pipe, 208-installation base. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] See also Figure 1-3 The present invention provides a technical solution: a power assembly installed in the body of a dredging robot and used to provide driving force for the power elements on the dredging robot. The body also protects the power assembly. The power assembly includes a body water tank structure 201 installed on the bottom surface of the body. The body water tank structure 201 is sealed and welded to the body. A plurality of shock-absorbing pads 202 are provided on the inner bottom surface of the body. A motor pump group 203 is fixedly installed on the shock-absorbing end of the shock-absorbing pad 202. The shock-absorbing pad 202 can reduce the vibration generated during the operation of the motor pump group 203. The body water tank structure 201 and the bottom surface of the body are both provided with tank openings at the same position. A cooling water tank cover 204 with a sealed tank opening is provided on the inner bottom surface of the vehicle body, and the suction end of the motor pump group 203 is fixedly connected to one end of a cooling water suction pipe 205, and the other end of the cooling water suction pipe 205 passes through the bottom surface of the vehicle body and extends into the interior of the vehicle body water tank structure 201, and the output end of the motor pump group 203 is provided with one end of a cooling water inlet pipe 206, and the other end of the cooling water inlet pipe 206 is fixedly connected to the input end of the motor pump group 203, and the return end of the motor pump group 203 is fixedly connected to one end of a cooling water return pipe 207, and the other end of the cooling water return pipe 207 passes through the bottom surface of the vehicle body and extends into the interior of the vehicle body water tank structure 201.

[0019] Specifically, the motor pump group 203 includes a water-cooled motor 2031 installed on the shock-absorbing pad 202. The water-cooled motor 2031 is located at one end of the output shaft and is bolted to a bell-shaped cover 2032. One end of the bell-shaped cover 2032 is bolted to a hydraulic oil pump 2033. The output shaft of the water-cooled motor 2031 is connected to the input shaft of the hydraulic oil pump 2033 through a coupling. One end of the hydraulic oil pump 2033 is bolted to a cooling water pump 2034. The input shaft of the cooling water pump 2034 is connected to the output shaft of the hydraulic oil pump 2033 through a key. During operation, the water-cooled motor converts electrical energy into kinetic energy of the output shaft, which is output to the input shaft of the hydraulic oil pump 2033. The output shaft of the hydraulic oil pump 2033 is then output to the input shaft of the cooling water pump 2034, thereby driving the circulation of cooling water and hydraulic oil. The suction end of the cooling water pump 2034 is connected to one end of the cooling water suction pipe 205, the output end of the cooling water pump 2034 is connected to one end of the cooling water inlet pipe 206, the other end of the water inlet pipe 206 is connected to the input end of the water-cooled motor 2031, and the return end of the water-cooled motor 2031 is connected to one end of the cooling water return pipe 207. When the cooling water pump 2034 is running, the cooling water suction pipe 205 draws cooling water from the vehicle body water tank structure 201, enters the cooling water flow channel in the inner cavity of the water-cooled motor 2031 through the cooling water inlet pipe 206, and then returns to the vehicle body water tank structure 201 through the cooling water return pipe 207. The cooling water suction pipe 205 and the cooling water return pipe 207 are respectively arranged at both ends of the vehicle body water tank structure 201 to ensure that the cooling water has a sufficient flow distance in the vehicle body water tank structure 201 to enhance the heat exchange effect.

[0020] The vehicle body water tank structure 201, the cooling water suction pipe 205, the cooling water pump 2034, the cooling water inlet pipe 206 and the cooling water return pipe 207 form a closed internal circulation cooling system, which transfers the heat generated during the operation of the water-cooled motor 2031 to the cooling water. When the robot is operating normally, the vehicle body water tank structure 201 is immersed in water, thereby transferring the heat to the external water body, forming an open cooling system.

[0021] Specifically, there are ventilation holes on the side wall of the bell-shaped cover 2032, which facilitate the timely heat dissipation of the mechanical seal at the output end of the water-cooled motor 2031 and the coupling in the bell-shaped cover 2032 during operation.

[0022] Specifically, the vehicle body water tank structure 1 is a welded closed water tank.

[0023] Specifically, the shock-absorbing pad 202 is fixedly mounted on the inner bottom surface of the vehicle body through the mounting base 208. The mounting base 208 is also designed with a strong toggle plate to enhance its stability and firmness.

[0024] Specifically, the shock-absorbing pad 202 is a double-headed stud structure, which can effectively reduce vibration transmission after installation.

[0025] Working principle: When the cooling water pump 2034 in the present invention is in operation, the cooling water suction pipe 205 draws cooling water from the vehicle body water tank structure 201, enters the cooling water flow channel of the inner cavity of the water-cooled motor 2031 through the cooling water inlet pipe 206, and then returns to the vehicle body water tank structure 201 through the cooling water return pipe 207. The cooling water suction pipe 205 and the cooling water return pipe 207 are respectively arranged on both sides of the surface of the vehicle body water tank structure 201 to ensure that the cooling water has enough flow distance in the vehicle body water tank structure 201 to enhance the heat exchange effect. The vehicle body water tank structure 201, the cooling water suction pipe 205, the cooling water pump 2034, the cooling water inlet pipe 206 and the cooling water return pipe 207 form a closed internal circulation cooling system, which transfers the heat generated during the operation of the water-cooled motor 2031 to the cooling water. When the robot is operating normally, the vehicle body water tank structure 201 is immersed in water, thereby transferring the heat to the external water body, forming an open cooling system.

[0026] In order to effectively fix the motor pump unit and reduce the vibration generated during the operation of the water-cooled motor, a mounting base with a strong elbow plate and a shock-absorbing pad are designed. The shock-absorbing pad is a double-headed stud structure, which can effectively reduce vibration transmission after installation.

[0027] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "fixed" should be understood in a broad sense, for example, it 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. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the instructions and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A power assembly installed in the body of a dredging robot for providing driving force in the dredging robot, characterized in that: The power assembly comprises a vehicle body water tank structure (201) mounted on the bottom surface of the vehicle body, a plurality of shock absorbing pads (202) are provided on the inner bottom surface of the vehicle body, a motor pump group (203) is fixedly mounted on the shock absorbing end of the shock absorbing pad (202) for reducing the vibration of the motor pump group (203), a tank opening is provided at the same position of the vehicle body water tank structure (201) and the bottom surface of the vehicle body, a cooling water tank cover plate (204) for sealing the tank opening is provided on the inner bottom surface of the vehicle body, one end of a cooling water suction pipe (205) is fixedly connected to the suction end of the motor pump group (203), the other end of the cooling water suction pipe (205) passes through the bottom surface of the vehicle body and extends into the interior of the vehicle body water tank structure (201), for absorbing the cooling water in the vehicle body water tank structure (201). Cooling water, the output end of the motor pump group (203) is provided with one end of a cooling water inlet pipe (206), the other end of the cooling water inlet pipe (206) is fixedly connected to the input end of the motor pump group (203) and is used to circulate the cooling water in the motor pump group (203), the return end of the motor pump group (203) is fixedly connected to one end of a cooling water return pipe (207), the other end of the cooling water return pipe (207) passes through the bottom surface of the vehicle body and extends into the interior of the vehicle body water tank structure (201), and is used to recover the cooling water after absorbing heat into the vehicle body water tank structure (201), the shock absorbing pad (202) is fixedly mounted on the inner bottom surface of the vehicle body through a mounting base (208), and the shock absorbing pad (202) is a stud structure; The motor pump assembly (203) comprises a water-cooled motor (2031) mounted on a shock-absorbing pad (202); one end of the output shaft of the water-cooled motor (2031) is bolted to a bell-shaped housing (2032); one end of the bell-shaped housing (2032) is bolted to a hydraulic oil pump (2033); the output shaft of the water-cooled motor (2031) is connected to the input shaft of the hydraulic oil pump (2033) via a coupling; one end of the hydraulic oil pump (2033) is bolted to a cooling water pump (2034); The input shaft of the cooling water pump (2034) is connected to the output shaft of the hydraulic oil pump (2033) via a key; the suction end of the cooling water pump (2034) is connected to one end of a cooling water suction pipe (205); the output end of the cooling water pump (2034) is connected to one end of a cooling water inlet pipe (206); the other end of the cooling water inlet pipe (206) is connected to the input end of the water-cooled motor (2031); and the return end of the water-cooled motor (2031) is connected to one end of a cooling water return pipe (207).

2. A power assembly according to claim 1, characterized in that: The side wall of the bell-shaped cover (2032) is penetrated with ventilation holes for dissipating heat.

3. A power assembly according to claim 1, characterized in that: The vehicle body water tank structure (1) is a welded closed water tank.

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