A direct-current speed reduction motor for photovoltaic rotary tracking

Abstract

The utility model discloses a kind of DC speed reducer motor for photovoltaic rotary tracking, belong to DC speed reducer motor technical field. Including motor body, speed reducer, shell, rear end cover, outlet and breather valve, the motor body is coated with shell outside, its one side is connected with speed reducer, the other side is sealed by rear end cover, the lower part of the rear end cover is provided with outlet and breather valve, and the port of both is vertically downward. By the power cord and signal line from motor side below, and in combination with the design of downward breather valve, effectively prevent rainwater from pouring along cable or directly invading using gravity drainage principle, significantly improve the whole machine waterproof performance and environmental adaptability. The utility model structure is reasonable, sealing reliable, installation and maintenance are convenient, can be widely used in rotary solar tracking device of photovoltaic power generation system, improve system operation stability and service life.

Description

Technical Field

[0001] This utility model belongs to the field of DC geared motor technology, specifically relating to a DC geared motor for photovoltaic rotary tracking. Background Technology

[0002] In solar photovoltaic power generation systems, the photovoltaic cyclone tracking system significantly improves power generation efficiency by automatically tracking the sun's azimuth angle, while the DC geared motor is the core drive component that achieves precise rotation. Because it operates outdoors for extended periods, the motor must withstand harsh environments such as high temperatures, rain, ultraviolet radiation, and humidity, requiring extremely high levels of waterproofing and operational reliability.

[0003] Currently, most mainstream products adopt a tail-out wiring structure, with power and signal cables exiting from the rear of the motor, relying on rubber seals or waterproof connectors for protection. However, rubber seals are prone to aging and cracking under prolonged exposure to sun and rain, leading to seal failure. Furthermore, when the motor is installed tilted or upside down, rainwater may flow back into the motor along the cable sheath, causing short circuits in the windings, damage to the control circuit, or bearing corrosion, resulting in motor malfunction or even system shutdown. In addition, tail-out wiring is inconvenient in some installation scenarios, and the sealing effect depends on the on-site installation process, leading to high maintenance costs. While some existing technologies include side-out wiring motors, their outlets are mostly located in the middle or upper part of the motor side, still posing a risk of rainwater flowing in along the cable. Moreover, they lack coordinated design with structures such as vent valves, failing to fundamentally solve the sealing reliability problem for long-term outdoor operation.

[0004] Therefore, there is an urgent need for a DC geared motor with a reasonable structure, reliable sealing, and suitable for long-term outdoor operation, in order to improve the overall stability and service life of the photovoltaic rotary tracking system. Utility Model Content

[0005] The purpose of this invention is to overcome the above-mentioned defects in the prior art and provide a DC geared motor for photovoltaic rotary tracking. By changing the direction of the motor output wires, the power lines and signal lines are led out from the side of the motor housing and the output ports are arranged downwards. By utilizing gravity and structural guidance, rainwater is effectively prevented from entering the motor through the cable, significantly improving the motor's waterproof performance, operational reliability and service life.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A DC geared motor for photovoltaic rotary tracking includes a motor body, a reduction mechanism, a housing, a rear end cover, a cable outlet, and a vent valve. The motor body is covered by a housing, one side of which is connected to the reduction mechanism, and the other side is sealed by the rear end cover. The lower part of the rear end cover is provided with a cable outlet and a vent valve, and both ports face vertically downward.

[0007] Preferably, the outlet is a waterproof aviation plug, used to connect to external power supply and control lines.

[0008] Optionally, the outlet is a direct lead-in structure, with the motor winding leads leading out from the lower side and sealed with weather-resistant silicone rubber to form a sealing layer.

[0009] Preferably, a protective sleeve is provided at the connection between the outer shell and the rear end cover. The protective sleeve is an elastic sealing sleeve or an injection-molded protective ring, which is used to enhance the waterproof and dustproof performance of the joint area and prevent moisture from penetrating along the gap.

[0010] Preferably, the outer shell adopts a heat shrink tubing structure and is made of polyolefin, polyvinyl chloride or polytetrafluoroethylene, which has excellent weather resistance, UV resistance and flame retardant properties.

[0011] Preferably, the vent valve has a hydrophobic microporous vent membrane structure.

[0012] Beneficial effects: By placing the outlet and vent valve on the side of the motor and arranging them downwards, this utility model fundamentally eliminates the risk of rainwater intrusion, significantly improves the motor's waterproof sealing performance and outdoor environmental adaptability, effectively avoids insulation damage and short circuit problems caused by water ingress, extends the service life of the motor under harsh working conditions such as photovoltaic rotary tracking systems, makes operation safer and more reliable, and makes installation and maintenance more convenient. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the first embodiment of the present utility model; Figure 2 This is a front view of the first embodiment of the present invention; Figure 3 This is a left view of the first embodiment of the present invention, showing the outlet and the vent valve arranged downwards; Figure 4 This is a partial schematic diagram of the second embodiment of the present invention, showing the direct lead structure; Explanation of reference numerals in the attached figures: 1. Speed ​​reduction mechanism; 2. Housing; 3. Rear end cover; 4. Cable outlet; 5. Vent valve; 6. Protective sleeve. Detailed Implementation

[0014] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of this application and are therefore intended to limit the scope of protection of this application.

[0015] This embodiment primarily implements a DC geared motor for photovoltaic rotary tracking. By placing the cable outlet and vent valve on the side of the motor and arranging them downwards, the risk of rainwater intrusion is fundamentally eliminated, significantly improving the motor's waterproof sealing performance and outdoor environmental adaptability, and effectively avoiding insulation damage and short circuit problems caused by water ingress. The specific solution is as follows: Example 1

[0016] like Figure 1-3 As shown, a DC geared motor for photovoltaic rotary tracking includes a motor body, a reduction mechanism 1, a housing 2, a rear end cover 3, a cable outlet 4, and a vent valve 5. The motor body is encapsulated in the housing 2, with the reduction mechanism 1 connected to one side and the rear end cover 3 sealing and fixing the other side.

[0017] In the above embodiment, a cable outlet 4 and a vent valve 5 are integrated at the lower part of the rear cover 3, with both ports facing vertically downwards. The cable outlet 4 uses an IP67-rated waterproof aviation plug to enable quick plug-and-play connection between the power cord and the Hall feedback signal line; the vent valve 5 has a hydrophobic microporous breathable membrane structure, allowing gas to pass through while blocking liquid water from entering, used to balance the internal and external atmospheric pressure of the motor and prevent condensation or deformation of the seals caused by temperature changes.

[0018] In the above embodiments, the outer shell 2 is made of polytetrafluoroethylene heat shrink tubing, which has excellent weather resistance and low surface energy characteristics, reducing dirt adhesion. A rubber sleeve 6 is provided at the joint between the outer shell 2 and the rear cover 3 to further improve the sealing reliability of the connection area.

[0019] When it rains, the rainwater flows down the motor casing. When it reaches the cable outlet, because the outlet faces downwards, the rainwater cannot enter the hole. Even if a small amount of water droplets adhere to the cable sheath, they will flow towards the ground under gravity and will not flow back into the motor.

[0020] During operation, even in heavy rainfall, rainwater flowing along the outer casing to the cable outlet area is prevented from entering the channels because the outlet faces downwards. Even if a small amount of water adheres to the cable sheath, it will flow towards the ground under gravity and cannot flow back into the motor. The downward-facing design of the vent valve also prevents rainwater from directly impacting the diaphragm, ensuring stable long-term ventilation. Example 2

[0021] like Figure 4 As shown, an economical implementation method is provided for low-cost projects. The difference from Embodiment 1 is that the outlet 4 uses a direct lead-in method. After the motor winding lead-in wires are led out from below the rear cover side, they are encapsulated with weather-resistant silicone rubber to form an integrated sealing layer, achieving seamless protection.

[0022] This structure eliminates the need for a plug assembly, reducing material costs and assembly complexity. It is suitable for arid or semi-arid regions with low annual rainfall and easy maintenance. The cured silicone exhibits good elasticity and adhesive strength, effectively buffering vibration stress and preventing moisture intrusion.

[0023] This utility model provides a DC geared motor for photovoltaic rotary tracking, which has a reasonable structure, reliable sealing, and is suitable for long-term outdoor operation, thereby improving the overall stability and service life of the photovoltaic rotary tracking system.

[0024] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application.

Claims

1. A DC geared motor for photovoltaic rotary tracking, characterized in that: It includes a motor body, a reduction mechanism (1), a housing (2), a rear cover (3), a cable outlet (4), and a vent valve (5). The motor body is covered by the housing (2), with the reduction mechanism (1) connected to one side and the rear cover (3) sealing the other side. The cable outlet (4) and the vent valve (5) are arranged side by side at the lower part of the rear cover (3), and both ports face vertically downward.

2. The DC geared motor for photovoltaic rotary tracking according to claim 1, characterized in that: The outlet (4) is a waterproof aviation plug.

3. The DC geared motor for photovoltaic rotary tracking according to claim 1, characterized in that: The outlet (4) is a direct lead-in structure, with the motor winding lead-in leading out from the lower side and sealed by weather-resistant silicone rubber to form a sealing layer.

4. The DC geared motor for photovoltaic rotary tracking according to claim 1, characterized in that: The connection between the outer shell (2) and the rear cover (3) is provided with a protective sleeve (6).

5. A DC geared motor for photovoltaic rotary tracking according to claim 4, characterized in that: The sheath (6) is an elastic sealing sheath or an injection-molded protective ring.

6. A DC geared motor for photovoltaic rotary tracking according to claim 4, characterized in that: The outer shell (2) is a heat shrink tubing structure, and the material is one of polyolefin, polyvinyl chloride or polytetrafluoroethylene.

7. A DC geared motor for photovoltaic rotary tracking according to any one of claims 1-6, characterized in that: The breathable valve (5) is a hydrophobic microporous breathable membrane structure.

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