Waterproof structure of motor in agricultural machinery industry

Abstract

The utility model discloses a waterproof structure of a motor in the agricultural machinery industry, a stator is located in a shell and fixed with the shell, a rotor penetrates through the stator, a front end cover assembly and a rear end cover assembly to be respectively matched with two ends of the shell, two ends of the rotor are respectively connected with the front end cover assembly and the rear end cover assembly, and a protective cover is composed of a cylinder and a cover plate. The cover plate is fixed with one end of the cylinder body, the inner wall surface of the other end of the cylinder body is a conical surface, an annular mounting part is arranged on the circumferential surface of the rear end cover assembly, the sealing ring is matched with the annular mounting part, and after the other end of the cylinder body is matched with the rear end cover assembly, the sealing ring is pressed between the conical surface and the rear end cover assembly. A sealing cavity is formed between the protecting cover and the rear end cover assembly, one end of the rotor is located in the sealing cavity, the encoders are installed at one end of the rear end cover assembly and one end of the rotor respectively, a first hole is formed in the cover plate, the sealing assembly is matched with the first hole, and the leading-out cable is connected with the stator and the encoders respectively. The waterproof structure is simple in structure, better in waterproof effect and high in universality.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a waterproof structure of a motor in the agricultural machinery industry. Background Art

[0002] As electric motors become increasingly common in our daily lives, across various sectors, including household appliances, industrial production, transportation, and healthcare, they are making significant contributions to energy conservation, efficiency improvement, and environmental protection. With the rapid development of science and technology, the application areas of electric motors will continue to expand, bringing even greater convenience to people's lives.

[0003] But at the same time, due to the wide range of motor usage scenarios and different usage conditions, higher requirements are also placed on various aspects of motor performance, especially waterproof capabilities. Motors with higher waterproof capabilities can better resist water intrusion, so they can operate stably and reliably in humid, rainy or underwater environments, avoiding failures or damage caused by moisture, improving operational stability and reducing failure rates.

[0004] The motor currently used in the agricultural machinery industry has the following structure: it includes a housing, a stator, a rotor, a front cover assembly, and a rear cover assembly. The stator is located in the housing and is fixed to the housing. The stator is annular, and the rotor passes through the stator. After the two ends of the rotor are connected to the front cover assembly and the rear cover assembly respectively, the rotor can rotate relative to the stator. The front cover and the rear cover are respectively fixed to the two ends of the housing.

[0005] For the motor with the above structure, if a component such as an encoder is set on the rotor, the usual practice is to use a cover to cover the encoder separately, and the cover is fixed to the end cover. For this structure, the cover only provides basic protection for the encoder, making the encoder less waterproof. When used in a humid environment such as agricultural machinery, it is easy to cause damage to the motor. Utility Model Content

[0006] The utility model provides a waterproof structure for a motor in the agricultural machinery industry. The utility model has a simple structure, better waterproof effect and strong versatility.

[0007] The technical solutions to the above technical problems are as follows:

[0008] The cam is secured to the chassis and has two camshafts that are secured to the chassis by means of a screw thread insert and a screw thread insert that engages with the chassis to allow the chassis to move forwards and backwards, and the cam is secured to the chassis by means of a screw thread insert.

[0009] Furthermore, it also includes equal height screws. The cover plate is provided with a step hole. After the equal height screws pass through the step hole and are threadedly connected to the rear end cover assembly, the protective cover and the rear end cover assembly are fastened into one.

[0010] Furthermore, it also includes a rubber sheath, which is sleeved on the equal height screw, one end of the rubber sheath abuts against the rear end cover assembly, and the other end of the rubber sheath abuts against the cover plate.

[0011] Furthermore, the sealing assembly includes a waterproof rubber ring and a cable rubber ring, at least part of the waterproof rubber ring is conical, the first hole consists of a circular hole section and a conical hole section, the waterproof rubber ring cooperates with the conical hole section, and the cable rubber ring cooperates with the circular hole section.

[0012] Furthermore, it also includes a waterproof component, which is sleeved on the cylinder, the rear end cover assembly and the shell.

[0013] An annular mounting portion is provided at the rear end cover assembly of the utility model. After the sealing ring is installed on the annular mounting portion, a protective cover matching the shell size is installed on the outer side of the rear end cover assembly. The inner wall surface of the other end of the cylinder of the protective cover is a conical surface. The sealing ring is pressed between the conical surface and the rear end cover assembly, which can effectively prevent water from seeping in.

[0014] The protective cover is locked to the motor's rear end cap with screws of equal height, ensuring a tight fit. A waterproof connector is provided on the cover, which applies pressure to the cable rubber ring, ensuring a tight, sealed fit between the ring and the first hole. This pressure ensures that the rubber ring adheres to the contact surface and better secures the cable.

[0015] In summary, the above structure meets the waterproof requirements of the motor and can be effectively used in humid environments such as agricultural machinery, greatly improving its stability and reducing the failure rate. Using a conventional motor as the main body for improvement, it has a simple structure, mature technology, stable operation, good low-speed performance, low manufacturing cost, easy maintenance, and high market acceptance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional diagram of the waterproof structure of a motor in the agricultural machinery industry.

[0017] Figure 2 The present invention is a cross-sectional view of a waterproof structure of a motor in the agricultural machinery industry in the first direction.

[0018] Figure 3 This is a cross-sectional view of a waterproof structure of a motor in the agricultural machinery industry in the second direction.

[0019] Figure 4 For Figure 1 Schematic diagram after some parts are hidden.

[0020] Figure 5 for Figure 3 Enlarged view of the P part in the figure.

[0021] Figure 6 A perspective view of the protective cover.

[0022] Symbols in the accompanying drawings:

[0023] Shell 1, stator 2, recess 2a, rotor 3, front cover assembly 4, boss 4a, rear cover assembly 5, protective cover 6, cylinder 6a, cover plate 6b, conical surface 6c, first hole 6d, contour screw 7, sealing ring 8, waterproof rubber ring 9, cable rubber ring 10, sealing cavity 11, rubber sheath 12, waterproof component 13, waterproof connector 14, tightening screw 15, lead-out cable X. DETAILED DESCRIPTION

[0024] The present invention will be described in further detail below with reference to the accompanying drawings and specific implementations.

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate directions or positional relationships are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0027] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0028] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0029] like Figures 1 to 6 As shown, the utility model is a waterproof structure of a motor in the agricultural machinery industry, including a housing 1, a stator 2, a rotor 3, a front cover assembly 4, a rear cover assembly 5, a lead-out cable X, and an encoder. The stator 2 is located in the housing 1 and is fixed to the housing 1. The rotor 3 passes through the stator 2. The front cover assembly 4 and the rear cover assembly 5 are respectively matched with the two ends of the housing 1. The two ends of the rotor 3 are respectively connected to the front cover assembly 4 and the rear cover assembly 5. The front cover assembly 4 and the rear cover assembly 5 are both composed of an end cover body and a bearing. A bearing chamber is provided on the end cover body, and the bearing is matched with the bearing chamber.

[0030] A boss 4a is provided on the axial end face of the end cover body. The bosses 4a on the front end cover assembly 4 and the rear end cover assembly 5 are located in the shell 1 and are clearance-matched with the shell 1. The axial end faces at both ends of the shell 1 are respectively pressed against the axial end faces of the front end cover assembly 4 and the rear end cover assembly 5.

[0031] The present invention also includes a tightening screw 15. A relief recess 2a is provided on the stator 2. Mounting holes are provided on the front end cover assembly 4 and the rear end cover assembly 5. The tightening screw 15 passes through the mounting hole on the rear end cover assembly 5, the relief recess 2 and the threaded hole on the front end cover assembly 4, so that the front end cover assembly 4 and the rear end cover assembly 5 are fastened together.

[0032] The present invention further includes a protective cover 6, a sealing ring 8, and a sealing assembly. The protective cover 6 is composed of a barrel 6a and a cover plate 6b. The cover plate 6b is fixed to one end of the barrel 6a. The inner wall surface of the other end of the barrel 6a is a conical surface 6c. The rear end cover assembly 5 is provided with an annular mounting portion on its circumference. The sealing ring 8 cooperates with the annular mounting portion. The annular mounting portion can be an annular groove or an annular boss. After the other end of the barrel 6a cooperates with the rear end cover assembly 5, the sealing ring 8 is compressed between the conical surface 6c and the rear end cover assembly 5, forming a sealed cavity 11 between the protective cover 6 and the rear end cover assembly 5. One end of the rotor 3 is located within the sealed cavity 11. The encoder is respectively mounted on one end of the rear end cover assembly 5 and the rotor 3. The cover plate 6b is provided with a first hole 6d. The sealing assembly cooperates with the first hole 6d. A lead-out cable X is connected to the stator 2 and the encoder, respectively. The lead-out cable X passes through the sealing assembly.

[0033] Since a sealed cavity 11 is formed between the protective cover 6 and the rear end cover assembly 5, and the space of the sealed cavity 11 is sufficiently large, after the encoder is located in the sealed cavity 11, the encoder is installed on the rear end cover assembly 5 and the end of the rotor 3, respectively. For example, the encoder's code disk is installed on the end of the rotor 3, and the rest of the encoder is installed on the rear end cover assembly 5. The encoder provides a closed-loop feedback signal, which improves the monitoring and control of the motor position and speed and is applied to higher-level applications. After the encoder is protected, the barrel 6a cooperates with the rear end cover assembly 5 so that the sealing ring 8 is compressed between the conical surface 6c and the rear end cover assembly 5, thereby achieving a seal between the barrel 6a and the rear end cover assembly 5. In addition, a sealing assembly is installed in the first hole 6d on the cover plate 6b, so that the lead-out cable X passing through the sealing assembly is sealed. This solves the sealing problem after the encoder is installed. After the sealing ring is installed, the protective cover 6 and the rear end cover assembly 5 cooperate with each other to improve the sealing effect and waterproof performance.

[0034] The present invention further includes contour screws 7. The cover plate 6b is provided with stepped holes 6e. Conformal screws 7 pass through stepped holes 6e and are threadedly connected to the rear end cover assembly 5, thereby securing the protective cover 6 and the rear end cover assembly 5 together. The contour screws, with their higher machining precision, high tensile strength, and superior support, secure the protective cover 6 and the rear end cover assembly 5, improving the seal and preventing water from entering the protective cover.

[0035] The present invention also includes a rubber sheath 12, which is fitted over the contour screw 7. One end of the rubber sheath 12 abuts against the rear end cover assembly 5, while the other end abuts against the cover plate 6b. In actual production, the lead-out cable X inevitably comes into contact with the contour screw 7. The vibration generated during motor operation can easily cause friction between the lead-out cable X and the contour screw 7, leading to wear and tear on the cable, which can cause short circuits and leakage, resulting in motor failure. The present invention, by installing the rubber sheath 12 over the contour screw 7, effectively prevents this type of malfunction and improves motor operation stability.

[0036] The sealing assembly includes a waterproof rubber ring 9 and a cable rubber ring 10. At least a portion of the waterproof rubber ring 9 is tapered. The first hole 6d consists of a circular hole segment and a tapered hole segment. The waterproof rubber ring 9 engages with the tapered hole segment, while the cable rubber ring 10 engages with the circular hole segment. This structure utilizes the squeezing effect of pressure on the waterproof rubber ring 9 to improve the sealing effect. The squeezing of the cable rubber ring 10 allows the lead cable X to be better wrapped.

[0037] The sealing assembly also includes a waterproof joint 14, the inner wall of the circular hole segment is provided with an internal thread, the outer wall of the waterproof joint 14 is provided with an external thread, the waterproof joint 14 is provided with a through hole, which is a stepped hole. The waterproof joint 14 is threadedly connected to the circular hole segment, and the cable rubber ring 10 is located in the stepped hole of the waterproof joint 14. During installation, the waterproof joint 14 generates an extrusion force on the waterproof rubber ring 9.

[0038] The present invention also includes a waterproof component 13, which fits over the barrel 6a, the rear end cover assembly 5, and the housing 1. This creates a seal between the joints of the protective cover 6 and the rear end cover assembly 5, and between the rear end cover assembly 5 and the housing 1. In the present invention, the waterproof component 13 is a rubber sealing tape, which utilizes its excellent sealing properties to effectively prevent the infiltration of liquid substances such as water.

Claims

1. A waterproof structure for a motor in the agricultural machinery industry, comprising a housing (1), a stator (2), a rotor (3), a front cover assembly (4), a rear cover assembly (5), a lead cable (X), and an encoder, wherein the stator (2) is located in the housing (1) and is fixed to the housing (1), the rotor (3) passes through the stator (2), the front cover assembly (4) and the rear cover assembly (5) are respectively matched with the two ends of the housing (1), and the two ends of the rotor (3) are respectively connected to the front cover assembly (4) and the rear cover assembly (5), characterized in that: The invention also includes a protective cover (6), a sealing ring (8), and a sealing assembly. The protective cover (6) is composed of a cylinder (6a) and a cover plate (6b). The cover plate (6b) is fixed to one end of the cylinder (6a). The inner wall surface of the other end of the cylinder (6a) is a conical surface (6c). An annular mounting portion is provided on the circumference of the rear end cover assembly (5). The sealing ring (8) cooperates with the annular mounting portion. After the other end of the cylinder (6a) cooperates with the rear end cover assembly (5), the sealing ring (8) is pressed against the conical surface (6c). 6c) and the rear end cover assembly (5), a sealed cavity (11) is formed between the protective cover (6) and the rear end cover assembly (5), one end of the rotor (3) is located in the sealed cavity (11), the encoder is respectively mounted on one end of the rear end cover assembly (5) and the rotor (3), a first hole (6d) is provided on the cover plate (6b), the sealing assembly cooperates with the first hole (6d), a lead-out cable (X) is respectively connected to the stator (2) and the encoder, and the lead-out cable (X) passes through the sealing assembly.

2. The waterproof structure of a motor in the agricultural machinery industry according to claim 1, characterized in that: It also includes a height screw (7), and the cover plate (6b) is provided with a step hole (6e). After the height screw (7) passes through the step hole (6e) and is threadedly connected to the rear end cover assembly (5), the protective cover (6) and the rear end cover assembly (5) are fastened into one.

3. The waterproof structure of a motor in the agricultural machinery industry according to claim 2, characterized in that: It also includes a rubber sheath (12), which is sleeved on the equal height screw (7), one end of the rubber sheath (12) abuts against the rear end cover assembly (5), and the other end of the rubber sheath (12) abuts against the cover plate (6b).

4. The waterproof structure of a motor in the agricultural machinery industry according to claim 1, characterized in that: The sealing assembly comprises a waterproof rubber ring (9) and a cable rubber ring (10); at least a portion of the waterproof rubber ring (9) is conical; the first hole (6d) is composed of a circular hole section and a conical hole section; the waterproof rubber ring (9) cooperates with the conical hole section, and the cable rubber ring (10) cooperates with the circular hole section.

5. The waterproof structure of a motor in the agricultural machinery industry according to claim 1, characterized in that: It also includes a waterproof component (13), which is sleeved on the cylinder (6a), the rear end cover assembly (5) and the housing (1).

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