Agricultural engine generator convenient to maintain

Abstract

The utility model relates to the technical field of generator, concretely relates to a farm machine generator convenient to maintain, including generator body, the rear end of generator body is equipped with mounting bracket, the top of mounting bracket is equipped with the mounting groove, the inboard wall of mounting groove is equipped with a plurality of installation base, is equipped with first threaded hole on installation base, the first ventilation net is installed in the mounting groove, the second threaded hole that is equipped with with first threaded hole adaptation is equipped on the first ventilation net, when the first ventilation net is installed in the mounting groove, first threaded hole and second threaded hole are coincident state and first threaded hole and second threaded hole are connected with the same bolt, the periphery of mounting bracket top is equipped with a plurality of insertion hole, the side of mounting bracket is equipped with the second ventilation net, the top of second ventilation net is equipped with a plurality of threaded rods, when the second ventilation net is installed in the side of mounting bracket, threaded rod is inserted in the insertion hole, and the threaded rod is connected with the nut in the insertion hole part threadedly, the maintenance difficulty of the application is effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of generator technology, specifically to an agricultural generator that is easy to maintain. Background Technology

[0002] Traditional motor rear covers are primarily used in non-agricultural applications, secured to the regulator and rectifier bridge with bolts and nuts, and equipped with ventilation holes for heat dissipation. However, when used in agricultural machinery, their protective capabilities are insufficient, allowing external debris to easily enter the cover, clogging the ventilation holes and affecting motor cooling. Furthermore, cleaning the rear cover requires disassembly, which is inconvenient and increases maintenance difficulty.

[0003] Chinese Patent Publication No. CN222234549U discloses an agricultural generator, which includes a front cover, a rear cover, a stator assembly, a rotor assembly, a rectifier bridge, a regulator, and a rear cover. The stator assembly and rotor assembly are installed in the space formed by the front cover and the rear cover. The rectifier bridge, regulator, and rear cover are fixed to the rear end face of the rear cover. The rear cover consists of an axial end face and a circumferential end face. The axial end face includes an axial ventilation surface covering the rectifier bridge. Its frame structure has multiple upper ventilation holes with embedded metal braided mesh, allowing airflow but blocking debris larger than 2.5mm from entering. The regulator is completely enclosed by the surrounding structure formed by the axial end face and the circumferential end face, leaving only terminal clearance holes for the output terminals to extend, preventing debris from entering through the gap between the regulator and the rear cover. The circumferential end face has a circumferential ventilation surface with metal braided mesh, covering the side air inlet and fitting snugly with the fixing part of the rear cover to eliminate gaps. The rear cover uses a metal woven mesh to reduce the gaps, combined with an enclosed structure and a tight-fitting design, to prevent debris from entering the interior and avoid clogging the ventilation holes, thereby maintaining heat dissipation efficiency and reducing maintenance requirements. However, if either the axial or circumferential ventilation surface of the device is blocked, the entire cover must be disassembled to clean the ventilation holes, which increases the difficulty of maintenance.

[0004] Therefore, the present invention aims to provide an agricultural generator that is easy to maintain in order to solve the above-mentioned problems. Utility Model Content

[0005] To address the aforementioned issues, a maintenance-friendly agricultural generator is provided. Its modular ventilation structure design solves the problem of traditional complete disassembly and maintenance of the protective cover. The generator features a mounting slot and base at the top of the mounting frame. The first ventilation screen is fixed to the base's threaded holes with bolts, covering the top air inlet. The second side ventilation screen is fixed to the threaded rod with nuts via insertion holes, forming a lateral ventilation barrier. Both ventilation screens are detachable; when one side is blocked, only the corresponding ventilation screen bolts or nuts need to be removed for cleaning or replacement, without the need to completely remove the protective cover.

[0006] To address the problems of existing technologies, this utility model provides an easy-to-maintain agricultural generator, including a generator body. A mounting frame is provided at the rear end of the generator body. A mounting groove is formed at the top of the mounting frame. Several mounting bases are provided on the inner side wall of the mounting groove. A first threaded hole is formed on each mounting base. A first ventilation screen is installed in the mounting groove. The first ventilation screen has a second threaded hole that matches the first threaded hole. When the first ventilation screen is installed in the mounting groove, the first and second threaded holes coincide, and the same bolt is threaded into both the first and second threaded holes. Several insertion holes are formed around the top periphery of the mounting frame. A second ventilation screen is installed on the side of the mounting frame. Several threaded rods are formed at the top of the second ventilation screen. When the second ventilation screen is installed on the side of the mounting frame, the threaded rods are inserted into the insertion holes, and a nut is threaded onto the portion of the threaded rod extending out of the insertion hole.

[0007] Preferably, the bottom of the first ventilation mesh is provided with a first limiting ring that is adapted to the mounting groove and the mounting base. When the first ventilation mesh is installed in the mounting groove, the first limiting ring fits against the outer wall of the mounting base.

[0008] Preferably, the top of the second ventilation net is provided with a protective wall. When the second ventilation net is installed on the side of the mounting frame, the protective wall is attached to the outer side wall of the mounting frame, and a rubber sealing ring is provided between the outer side wall of the mounting frame and the protective wall.

[0009] Preferably, a through hole is provided at the center of the first ventilation mesh, and a first cleaning plate is rotatably connected in the through hole. A brush is provided on the side of the first cleaning plate near the first ventilation mesh.

[0010] Preferably, the first ventilation mesh has a guide block on its side, and the first cleaning plate has a guide groove at the position corresponding to the guide block, with the guide block inserted into the guide groove.

[0011] Preferably, a second cleaning plate is installed on the outer side of the second ventilation net, a guide rail is provided at the bottom of the second ventilation net, a guide groove is provided at the bottom of the second cleaning plate, the guide rail is inserted into the guide groove, and a brush is provided on one end of the second cleaning plate near the second ventilation net.

[0012] Preferably, the top of the second ventilation mesh is provided with a limiting circular block, and the top of the second cleaning plate is provided with a limiting circular groove that matches the limiting circular block, and the limiting circular block is inserted into the limiting circular groove.

[0013] Preferably, both ends of the guide rail and the guide block are provided with anti-detachment blocks to prevent the second cleaning plate from falling off.

[0014] The advantages of this utility model compared to the prior art are:

[0015] 1. This utility model forms a detachable double-layer ventilation structure by connecting the mounting groove at the top of the mounting bracket to the bolt of the first ventilation mesh and the side insertion hole to the threaded rod and nut of the second ventilation mesh, so that the first ventilation mesh and the second ventilation mesh can be disassembled and maintained independently, avoiding the need to disassemble the entire cover and reducing the difficulty of maintenance.

[0016] 2. This utility model adopts a first ventilation mesh with a central through-hole connecting a rotatable first cleaning plate and a second ventilation mesh with an outer guide rail connecting a slidable second cleaning plate. By rotating or moving the brush horizontally to clean the mesh holes, blockages can be cleared without disassembling the ventilation mesh, maintaining ventilation efficiency and reducing downtime for maintenance.

[0017] 3. This utility model uses a combination of a first limiting ring, a guide block and a guide groove, a limiting block and a limiting groove, and an anti-detachment block to constrain the movement trajectory of the cleaning plate and the installation position of the ventilation screen, preventing parts from shifting, falling off, or being damaged by vibration, thereby improving the stability of cleaning operations and the service life of the equipment. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of an agricultural machinery generator that is easy to maintain, according to this utility model.

[0019] Figure 2 This is an exploded view of the first ventilation screen of an agricultural machinery generator that is easy to maintain, according to this utility model.

[0020] Figure 3 This is a three-dimensional schematic diagram of the first cleaning plate of an agricultural machinery generator that is easy to maintain, according to this utility model.

[0021] Figure 4 This is a three-dimensional schematic diagram of the second ventilation screen of an agricultural machinery generator that is easy to maintain, according to this utility model.

[0022] Figure 5 This is a disassembly diagram of the second cleaning plate of an agricultural machinery generator that is easy to maintain, according to this utility model.

[0023] Figure 6 This is a partial cross-sectional view of the second ventilation screen of an agricultural machinery generator that is easy to maintain, according to this utility model.

[0024] Figure 7 yes Figure 6 Enlarged view of a portion of point A in the middle.

[0025] Figure 8 yes Figure 6 Enlarged view of section B in the middle.

[0026] The following are the labels in the diagram: 1. Generator body; 2. Mounting bracket; 3. Mounting slot; 4. Mounting base; 5. First ventilation screen; 6. Plug-in hole; 7. Second ventilation screen; 8. Threaded rod; 9. First limiting ring; 10. Protective wall; 11. First cleaning plate; 12. Guide block; 13. Guide groove; 14. Second cleaning plate; 15. Guide rail; 16. Guide groove; 17. Limiting block; 18. Limiting groove; 19. Anti-detachment block. Detailed Implementation

[0027] To further understand the features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments.

[0028] Reference Figures 1-8 As shown: An easy-to-maintain agricultural generator includes a generator body 1. The generator body 1 has a mounting bracket 2 at its rear end. The mounting bracket 2 has a mounting groove 3 at its top. The inner side wall of the mounting groove 3 has several mounting bases 4. The mounting bases 4 have first threaded holes. A first ventilation mesh 5 is installed in the mounting groove 3. The first ventilation mesh 5 has a second threaded hole that matches the first threaded hole. When the first ventilation mesh 5 is installed in the mounting groove 3, the first threaded hole and the second threaded hole are overlapped and the same bolt is threaded into the first threaded hole and the second threaded hole. The top periphery of the mounting bracket 2 has several insertion holes 6. A second ventilation mesh 7 is installed on the side of the mounting bracket 2. The top of the second ventilation mesh 7 has several threaded rods 8. When the second ventilation mesh 7 is installed on the side of the mounting bracket 2, the threaded rods 8 are inserted into the insertion holes 6, and the threaded part of the threaded rod 8 that extends out of the insertion hole 6 is threaded with a nut.

[0029] In existing technologies, if either or both of the axial ventilation surfaces are blocked, the entire protective cover must be disassembled to clean the ventilation holes, increasing maintenance difficulty. To solve this problem, in this application, a mounting bracket 2 located at the rear end of the generator body 1 is used to fix and install the ventilation structure. The mounting groove 3 at the top of the mounting bracket 2 is used to accommodate the first ventilation mesh 5, and several mounting bases 4 on the inner sidewall of the mounting groove 3 provide support and positioning. The first threaded hole on the mounting base 4 and the second threaded hole on the first ventilation mesh 5 are connected by bolts. When the bolts are screwed into the overlapping first and second threaded holes, the first ventilation mesh 5 is fixed in the mounting groove 3, ensuring its stable position and removability.

[0030] Several insertion holes 6 are provided around the top periphery of the mounting bracket 2 for engaging with the threaded rods 8 of the second ventilation mesh 7. When the second ventilation mesh 7 is mounted on the mounting bracket 2, the threaded rods 8 at its top are inserted into the corresponding insertion holes 6, and the portion of the threaded rods 8 protruding from the insertion holes 6 is tightened with nuts to secure the second ventilation mesh 7 to the side of the mounting bracket 2.

[0031] The first ventilation mesh 5 and the second ventilation mesh 7 cover the top and sides of the mounting frame 2, respectively, forming a double-layer ventilation structure. External air enters the generator through the mesh openings of the first ventilation mesh 5 and the second ventilation mesh 7, aiding in heat dissipation and preventing larger debris from entering. The bolt and nut connection method facilitates the disassembly of the first ventilation mesh 5 and the second ventilation mesh 7 for cleaning or replacement, ensuring convenient maintenance.

[0032] Reference Figures 1-3 As shown: The bottom of the first ventilation mesh 5 is provided with a first limiting ring 9 that is adapted to the mounting groove 3 and the mounting base 4. When the first ventilation mesh 5 is installed in the mounting groove 3, the first limiting ring 9 fits against the outer side wall of the mounting base 4.

[0033] The shape and size of the first limiting ring 9 at the bottom of the first ventilation mesh 5 match the contours of the mounting groove 3 and the mounting base 4. When the first ventilation mesh 5 is placed inside the mounting groove 3, the edge of the first limiting ring 9 will fit tightly against the outer wall surface of the mounting base 4, forming physical contact.

[0034] The fitting action of the first limiting ring 9 restricts the lateral movement or offset of the first ventilation mesh 5 within the mounting groove 3, ensuring accurate alignment of the first ventilation mesh 5 within the mounting groove 3. This fitting action makes it easier to align the first threaded hole and the second threaded hole during installation, reducing adjustment time.

[0035] Reference Figures 1-6 As shown: The second ventilation net 7 is provided with a protective wall 10 at its top. When the second ventilation net 7 is installed on the side of the mounting frame 2, the protective wall 10 is attached to the outer side wall of the mounting frame 2. A rubber sealing ring is provided between the outer side wall of the mounting frame 2 and the protective wall 10.

[0036] The protective wall 10 at the top of the second ventilation net 7 completely fits against the outer wall of the mounting frame 2 when the second ventilation net 7 is installed on the side of the mounting frame 2. The contact surface between the protective wall 10 and the outer wall of the mounting frame 2 is filled with a rubber sealing ring, which is compressed and tightly clamped between the two.

[0037] The rubber sealing ring undergoes elastic deformation under compression, filling the tiny gap between the protective wall 10 and the outer wall of the mounting bracket 2 to form a sealing interface. This sealing interface prevents external dust, moisture, or debris from entering the generator through the joint between the protective wall 10 and the outer wall of the mounting bracket 2, while also reducing the transmission of noise caused by vibration.

[0038] Reference Figures 1-3 As shown: A through circular hole is provided at the center of the first ventilation net 5, and a first cleaning plate 11 is rotatably connected in the through circular hole. A brush is provided on the side of the first cleaning plate 11 near the first ventilation net 5.

[0039] The through-hole at the center of the first ventilation mesh 5 is used to accommodate and fix the rotating connection structure of the first cleaning plate 11. The first cleaning plate 11 achieves rotational freedom through the axis of the through-hole, allowing the first cleaning plate 11 to rotate around the central axis of the through-hole.

[0040] When the first cleaning plate 11 rotates around the through hole, the brush on the side closest to the first ventilation screen 5 contacts the mesh surface of the first ventilation screen 5. During rotation, the brush sweeps across the mesh surface of the first ventilation screen 5, removing dust, debris, or other impurities adhering to the mesh to prevent clogging. To prevent dust and debris from being swept into the motor body 1, the first ventilation screen 5 can be removed before cleaning.

[0041] Reference Figures 1-3 As shown: The first ventilation mesh 5 is provided with a guide block 12 on its side, and the first cleaning plate 11 is provided with a guide groove 13 at the position corresponding to the guide block 12, and the guide block 12 is inserted into the guide groove 13.

[0042] The guide block 12 on the side of the first ventilation screen 5 cooperates with the guide groove 13 on the first cleaning plate 11 at the corresponding position. When the first cleaning plate 11 is installed on the first ventilation screen 5 through the through hole, the guide block 12 is inserted into the guide groove 13 of the first cleaning plate 11 to form a sliding connection.

[0043] The sliding trajectory of the guide block 12 within the guide groove 13 restricts the rotation direction of the first cleaning plate 11, ensuring its stable rotation around the axis of the through hole and preventing radial offset or tilting of the first cleaning plate 11 during rotation. The clearance fit between the guide block 12 and the guide groove 13 allows the first cleaning plate 11 to rotate smoothly, while simultaneously transmitting some of the rotational force through the contact surface, reducing the single-point force at the connection between the first cleaning plate 11 and the through hole.

[0044] Reference Figures 4-8 As shown: A second cleaning plate 14 is installed on the outer side of the second ventilation net 7. A guide rail 15 is provided at the bottom of the second ventilation net 7. A guide groove 16 is opened at the bottom of the second cleaning plate 14. The guide rail 15 is inserted into the guide groove 16. A brush is provided on one end of the second cleaning plate 14 near the second ventilation net 7.

[0045] The second cleaning plate 14, installed on the outer side of the second ventilation screen 7, is connected to the guide rail 15 at the bottom of the second ventilation screen 7 via a guide groove 16 at the bottom. When the second cleaning plate 14 is installed on the outer side of the second ventilation screen 7, the guide rail 15 is inserted into the guide groove 16 of the second cleaning plate 14, forming a sliding guide structure.

[0046] The sliding trajectory of the guide rail 15 within the guide groove 16 restricts the movement direction of the second cleaning plate 14, allowing the second cleaning plate 14 to move horizontally along the extension path of the guide rail 15. During movement, the brush on the side of the second cleaning plate 14 closest to the outer surface of the second ventilation mesh 7 remains in contact with the mesh surface of the second ventilation mesh 7, removing dust or debris adhering to the mesh surface. To prevent dust and debris from being swept into the motor body 1, the second ventilation mesh 7 can be removed before cleaning.

[0047] Reference Figures 4-8 As shown: The second ventilation mesh 7 is provided with a limiting block 17 at the top, and the second cleaning plate 14 is provided with a limiting groove 18 that is adapted to the limiting block 17 at the top, and the limiting block 17 is inserted into the limiting groove 18.

[0048] The limiting circular block 17 at the top of the second ventilation mesh 7 matches the shape and size of the limiting circular groove 18 at the top of the second cleaning plate 14. When the second cleaning plate 14 is installed on the outer surface of the second ventilation mesh 7, the limiting circular block 17 is inserted into the limiting circular groove 18 to form a sliding limiting structure.

[0049] The sliding trajectory of the limiting block 17 within the limiting groove 18, together with the guide rail 15 at the bottom of the second ventilation mesh 7 and the guide groove 16 at the bottom of the second cleaning plate 14, constrains the movement direction of the second cleaning plate 14, ensuring that the second cleaning plate 14 can only slide smoothly along the horizontal extension direction of the guide rail 15. The cooperation between the limiting block 17 and the limiting groove 18 further restricts the displacement or tilting of the second cleaning plate 14 in the vertical direction, maintaining a stable relative position between the second cleaning plate 14 and the outer surface of the second ventilation mesh 7.

[0050] Reference Figures 4-8 As shown: The guide rail 15 and the guide block 12 are provided with anti-detachment blocks 19 at both ends to prevent the second cleaning plate 14 from falling off.

[0051] The anti-detachment blocks 19, located at both ends of the guide rail 15 and the guide block 12, physically block the second cleaning plate 14 as it slides along the guide rail 15, by contacting the ends of the guide groove 16 and the limiting groove 18 of the second cleaning plate 14. When the second cleaning plate 14 slides to the end of the guide rail 15 or the limiting block 17, the anti-detachment blocks 19 contact the end faces of the guide groove 16 or the limiting groove 18 of the second cleaning plate 14, preventing the second cleaning plate 14 from continuing to move in the original direction.

[0052] The blocking effect of the anti-detachment block 19 restricts the sliding range of the second cleaning plate 14 within the effective length of the guide rail 15 and the limiting block 17, preventing the second cleaning plate 14 from detaching from the guide rail 15 or the limiting block 17 due to excessive movement.

[0053] Working principle: The mounting bracket 2 at the rear end of the generator body 1 mounts the first ventilation screen 5 through the mounting groove 3 at the top. The mounting base 4 on the inner wall of the mounting groove 3 is bolted to the second threaded hole of the first ventilation screen 5 through the first threaded hole. The side of the mounting bracket 2 is connected to the threaded rod 8 and nut of the second ventilation screen 7 through the insertion hole 6, forming a double-layer ventilation structure. The first limiting ring 9 at the bottom of the first ventilation screen 5 fits against the outer wall of the mounting base 4 to limit lateral displacement. A rubber sealing ring is provided between the protective wall 10 at the top of the second ventilation screen 7 and the outer wall of the mounting bracket 2 to seal the gap. The through circular hole in the center of the first ventilation screen 5 connects to the rotatable first cleaning plate 11, whose brushes clean the screen surface as it rotates. The guide block 12 on the side of the first ventilation screen 5 cooperates with the guide groove 13 of the first cleaning plate 11 to constrain the rotation trajectory. The second cleaning plate 14 on the outer side of the second ventilation mesh 7 is slidably connected to the guide rail 15 via the bottom guide groove 16. The top limiting block 17 cooperates with the limiting groove 18 to limit vertical displacement. The anti-detachment blocks 19 at both ends of the guide rail 15 and the limiting block 17 prevent the second cleaning plate 14 from sliding beyond its travel range and falling off. Bolts, nuts and limiting structures enable the ventilation mesh to be disassembled and maintained, and the brush and sliding cleaning structure keep the mesh openings unobstructed.

[0054] The above embodiments only illustrate one or more implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. An easy-to-maintain agricultural generator, comprising a generator body (1), characterized in that, The generator body (1) has a mounting bracket (2) at its rear end. The mounting bracket (2) has a mounting groove (3) at its top. The inner side wall of the mounting groove (3) has several mounting bases (4). The mounting bases (4) have a first threaded hole. The mounting groove (3) has a first ventilation mesh (5). The first ventilation mesh (5) has a second threaded hole that matches the first threaded hole. When the first ventilation mesh (5) is installed in the mounting groove (3), the first threaded hole and the second threaded hole are in an overlapping state and the same bolt is threaded into the first threaded hole and the second threaded hole. The mounting bracket (2) has several insertion holes (6) around its top periphery. The mounting bracket (2) has a second ventilation mesh (7) installed on its side. The second ventilation mesh (7) has several threaded rods (8) at its top. When the second ventilation mesh (7) is installed on the side of the mounting bracket (2), the threaded rods (8) are inserted into the insertion holes (6), and the threaded rods (8) that protrude from the insertion holes (6) are threaded into nuts.

2. The agricultural generator that is easy to maintain according to claim 1, characterized in that, The bottom of the first ventilation mesh (5) is provided with a first limiting ring (9) that is adapted to the mounting groove (3) and the mounting base (4). When the first ventilation mesh (5) is installed in the mounting groove (3), the first limiting ring (9) fits against the outer wall of the mounting base (4).

3. The agricultural generator that is easy to maintain according to claim 1, characterized in that, The second ventilation net (7) is provided with a protective wall (10) at the top. When the second ventilation net (7) is installed on the side of the mounting frame (2), the protective wall (10) is attached to the outer side wall of the mounting frame (2). A rubber sealing ring is provided between the outer side wall of the mounting frame (2) and the protective wall (10).

4. The agricultural generator that is easy to maintain according to claim 1, characterized in that, The first ventilation mesh (5) has a through hole at its center, and a first cleaning plate (11) is rotatably connected in the through hole. The first cleaning plate (11) has a brush on the side near the first ventilation mesh (5).

5. The agricultural generator that is easy to maintain according to claim 4, characterized in that, The first ventilation mesh (5) has a guide block (12) on its side, and the first cleaning plate (11) has a guide groove (13) at the position corresponding to the guide block (12), and the guide block (12) is inserted into the guide groove (13).

6. The agricultural generator that is easy to maintain according to claim 1, characterized in that, A second cleaning plate (14) is installed on the outer side of the second ventilation net (7). A guide rail (15) is provided at the bottom of the second ventilation net (7). A guide groove (16) is provided at the bottom of the second cleaning plate (14). The guide rail (15) is inserted into the guide groove (16). A brush is provided on one end of the second cleaning plate (14) near the second ventilation net (7).

7. The agricultural generator that is easy to maintain according to claim 6, characterized in that, The second ventilation net (7) is provided with a limiting block (17) at the top, and the second cleaning plate (14) is provided with a limiting groove (18) that is adapted to the limiting block (17) at the top, and the limiting block (17) is inserted into the limiting groove (18).

8. The agricultural generator that is easy to maintain according to claim 6, characterized in that, The guide rail (15) and guide block (12) are provided with anti-detachment blocks (19) at both ends to prevent the second cleaning plate (14) from falling off.

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