Friction clutch for pneumatic pesticide sprayer

Abstract

The utility model discloses a friction type clutch for a pneumatic pesticide sprayer, which relates to the technical field of clutches, and comprises a shell and a shell cover arranged at the end part of the shell, a plurality of friction plates and a plurality of second steel sheets are arranged in the shell, one second steel sheet is arranged between every two friction plates, and the shell cover is arranged at the end part of the shell. And one second steel sheet is attached to the bottom of the friction sheet at the bottommost part. Through cooperation of parts such as the elastic block and the like, when the pressing plate resets and does not press the first steel sheet, the elastic block does not bear external force any more so as to push the movable column to form thrust on the friction plate, and therefore the friction plate can be separated from the second steel sheet; the friction force between the second steel sheet and the friction sheet in the rotating process is reduced through the balls, so that the second steel sheet can be completely separated from the friction sheet in the process that the second steel sheet is not subjected to pressure, the phenomenon that the second steel sheet is not completely separated from the friction sheet is avoided, and the follow-up power cut-off effect is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of clutches, in particular to a friction clutch used for an air-conveying pesticide sprayer. Background Art

[0002] As a highly efficient agricultural plant protection equipment, air-blow sprayers are widely used in modern agriculture. They use high-power fans to atomize liquid pesticides into fine droplets, allowing the liquid pesticides to cover the front and back of crop leaves and the inside of tree canopies, ensuring that pests and diseases are effectively controlled. The clutch of an air-blow sprayer is a mechanical device used to transmit or cut off the power connection between the engine and the transmission system. By controlling the transmission of power, it can realize the start and stop, gear shifting and load adjustment of the equipment.

[0003] Existing wet clutches are usually composed of the following main components: clutch housing (this is the outer shell of the wet clutch, connected to the engine crankshaft), the housing contains friction plates and steel plate assemblies, and is immersed in lubricating oil. The main function of the housing is to provide a closed space for oil cooling and lubrication, friction plates (or friction discs) (the friction plates are the core components for transmitting power, with friction materials to increase friction with the steel plates. The friction plates usually have splines, are embedded in the inner wall of the housing, and rotate synchronously with the housing), steel plates (steel plates are metal plates placed alternately between friction plates, usually connected to the input shaft of the transmission through splines, and rotate synchronously with the input shaft. The friction between the steel plates and the friction plates realizes power transmission), pressure plate (or pressure plate) (the pressure plate is responsible for pressing the friction plates and steel plates together. The pressure plate usually applies pressure through a spring assembly to ensure that the friction plates and steel plates are tightly engaged to achieve power transmission), spring assembly (the spring assembly is used to provide pressure to the pressure plate. Wet clutches often use multiple coil springs or diaphragm springs to apply uniform pressure. Tightening force. The friction plate and steel plate are compressed by the pressure of the spring, and power can be transmitted), release mechanism (including release lever, release bearing and other components. When the clutch needs to be disengaged, the release mechanism reduces the pressure on the friction plate and steel plate by pulling the pressure plate, so that they are no longer in contact, thereby cutting off the power transmission), lubricating oil (the wet clutch works in a sealed housing, and the lubricating oil fills the entire housing. The lubricating oil plays a role in cooling and lubricating, preventing the friction plate and steel plate from overheating and wear. Since the wet clutch works in oil, the heat dissipation effect is better, which is suitable for high-load and high-speed working environments). During the process of the steel plate retreating and separating, the friction plate in the wet clutch may be temporarily adsorbed on the steel plate due to the adhesion of the oil and the residual friction, causing the friction plate to be driven by the steel plate to rotate together. This phenomenon is called "drag phenomenon" in the wet clutch, which may cause incomplete clutch separation and affect the effect of power cutting. For this reason, we provide a friction clutch for air-conveying sprayers to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a friction clutch for an air-conveying sprayer in order to solve the problem that the friction plate in a wet clutch may be temporarily adsorbed on the steel plate due to the adhesion force of the oil and the residual friction force during the retreat and separation process of the steel plate, causing the friction plate to be driven to rotate together with the steel plate.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a friction clutch for an air-conveying sprayer, comprising: a shell and a shell cover installed at the end of the shell, a plurality of friction plates and a plurality of second steel plates installed inside the shell, a second steel plate is arranged between every two of the friction plates, and a second steel plate is attached to the bottom of the bottom friction plate, and a first steel plate is attached to the top of the top friction plate; a pressure plate, the pressure plate is arranged on one side of the first steel plate, a connecting column is fixedly connected to the inner side of the pressure plate, and one end of the connecting column passes through the plurality of second steel plates and one first steel plate and extends to the outside thereof.

[0006] As a further solution of the present invention: a guide column is fixedly connected to the inner side of the pressure plate, and one end of the guide column passes through the outside of the first steel sheet, a compression spring is installed between the pressure plate and the first steel sheet, and the compression spring is wrapped around the outer wall of the guide column.

[0007] As a further solution of the present invention: a plurality of protrusions are fixedly connected to the inner side of the shell, and the inner sides of the plurality of friction plates are provided with grooves matching the protrusions. The friction plates are placed inside the shell and limited by the protrusions.

[0008] As a further solution of the present invention: an auxiliary guiding mechanism for reducing friction is provided on the inner side of the second steel sheet, and the auxiliary guiding mechanism includes a groove opened on the inner side of the second steel sheet, and a movable column is slidably connected to the inner side of the groove, and a ball is embedded in the top of the movable column.

[0009] As a further solution of the present invention: the auxiliary guiding mechanism further includes a circular ring fixedly connected to the outer wall of the movable column, and an elastic block is installed between the circular ring and the compression spring.

[0010] As a further solution of the present invention: four movable columns and four rolling balls are provided on the inner side of the second steel sheet, and the four movable columns and the four rolling balls are distributed at equal distances around the second steel sheet.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] By arranging the cooperation of parts such as the elastic block, when the pressure plate is reset and no longer presses the first steel plate, the elastic block is no longer subjected to external force, thereby pushing the movable column to form a thrust on the friction plate, so that the friction plate can be separated from the second steel plate. The friction between the second steel plate and the friction plate is reduced by the ball bearing during the rotation process, so that the second steel plate can be completely separated from the friction plate when not under pressure, avoiding incomplete separation of the second steel plate and the friction plate, thereby ensuring the effect of subsequent power cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of the utility model;

[0014] Figure 2 This is a schematic diagram of the friction plate installation of the present utility model;

[0015] Figure 3 This is a schematic diagram of the second steel sheet structure of the present utility model;

[0016] Figure 4 This is a schematic diagram of the compression spring structure of the present utility model;

[0017] Figure 5 This is an exploded view of the friction plate and the second steel plate of the utility model;

[0018] Figure 6 This is a cross-sectional view of the friction plate and the second steel plate of the present utility model;

[0019] Figure 7 For this utility model Figure 6 Enlarged view of point B in the middle.

[0020] In the figure: 1. Shell; 2. Shell cover; 3. Pressure plate; 4. First steel sheet; 5. Friction plate; 6. Bump; 7. Second steel sheet; 8. Connecting column; 9. Guide column; 10. Compression spring; 11. Ring; 12. Movable column; 13. Elastic block; 14. Ball; 15. Groove. DETAILED DESCRIPTION

[0021] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0022] See also Figures 1 to 7In the embodiment of the present invention, a friction clutch for an air-conveying sprayer includes: a housing 1 and a housing cover 2 installed at the end of the housing 1. A plurality of friction plates 5 and a plurality of second steel plates 7 are installed inside the housing 1. A second steel plate 7 is provided between every two friction plates 5, and a second steel plate 7 is attached to the bottom of the bottom friction plate 5, and a first steel plate 4 is attached to the top of the top friction plate 5; a pressure plate 3, which is provided on one side of the first steel plate 4, and a connecting column 8 is fixedly connected to the inner side of the pressure plate 3. , and one end of the connecting column 8 passes through multiple second steel sheets 7 and a first steel sheet 4 and extends to the outside thereof. A guide column 9 is fixedly connected to the inner side of the pressure plate 3, and one end of the guide column 9 passes through the outside of the first steel sheet 4. A compression spring 10 is installed between the pressure plate 3 and the first steel sheet 4, and the compression spring 10 is wound around the outer wall of the guide column 9. Multiple protrusions 6 are fixedly connected to the inner side of the shell 1, and the inner sides of the multiple friction plates 5 are provided with grooves matching the protrusions 6. The friction plates 5 are placed inside the shell 1 and limited by the protrusions 6.

[0023] In this embodiment: First, the first steel sheet 4 and the plurality of second steel sheets 7 are splined on the transmission input shaft by steel sheets. This connection method can fix the rotational synchronization of the first steel sheet 4 and the plurality of second steel sheets 7, but does not limit the axial sliding of the first steel sheet 4 and the plurality of second steel sheets 7, which enables the first steel sheet 4 and the plurality of second steel sheets 7 to move in the axial direction when subjected to the pressure of the pressure plate 3, to be compressed or separated. In summary, the above is the prior art and is therefore not fully reflected in the drawings of this scheme. When the pressure plate 3 is pressed toward the first steel sheet 4 by the thrust, the first steel sheet 4 is compressed by the compression spring 10, thereby This creates compression between the multiple friction plates 5 and the multiple second steel plates 7, so that after the friction plates 5 are compressed, when the pressure plate 3 is applied to the friction plates 5 and the second steel plates 7, the friction plates 5 and the second steel plates 7 will be compressed together in the axial direction to form a close contact. Since the spline connection allows the first steel plate 4 and the second steel plate 7 to slide in the axial direction, the first steel plate 4 and the second steel plate 7 can move slightly with the pressure of the pressure plate 3 to achieve the effect of complete contact between the friction plates 5 and the second steel plates 7. When the first steel plate 4 and the multiple second steel plates 7 can be driven to rotate by the rotation of the transmission input shaft, the compressed second steel plates 7 can drive the housing 1 to rotate.

[0024] Please refer to Figure 6-7An auxiliary guiding mechanism for reducing friction is provided on the inner side of the second steel sheet 7. The auxiliary guiding mechanism includes a groove 15 opened on the inner side of the second steel sheet 7. A movable column 12 is slidably connected to the inner side of the groove 15. A ball 14 is embedded in the top of the movable column 12. The auxiliary guiding mechanism also includes a ring 11 fixedly connected to the outer wall of the movable column 12. An elastic block 13 is installed between the ring 11 and the compression spring 10. Four movable columns 12 and four balls 14 are provided on the inner side of the second steel sheet 7, and the four movable columns 12 and the four balls 14 are distributed equidistantly around the second steel sheet 7.

[0025] In this embodiment: when the pressure plate 3 is reset and no longer presses the first steel plate 4, the elastic block 13 is no longer subjected to external force, thereby pushing the movable column 12 to form a thrust on the friction plate 5, so that the friction plate 5 can be separated from the second steel plate 7, and the friction between the second steel plate 7 and the friction plate 5 during the rotation process is reduced by the ball 14, so that the second steel plate 7 can be completely separated from the friction plate 5 without being subjected to pressure, avoiding incomplete separation of the second steel plate 7 and the friction plate 5, thereby ensuring the effect of subsequent power cutting.

[0026] The above is only a preferred specific implementation method of the present invention, but the scope of protection of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the scope of protection of the present invention.

Claims

1. A friction clutch for an air-conveying pesticide sprayer, characterized in that: include: A housing (1) and a housing cover (2) mounted at the end of the housing (1); a plurality of friction plates (5) and a plurality of second steel plates (7) are mounted inside the housing (1); a second steel plate (7) is disposed between every two friction plates (5); a second steel plate (7) is bonded to the bottom of the bottommost friction plate (5), and a first steel plate (4) is bonded to the top of the topmost friction plate (5); A pressure plate (3), the pressure plate (3) is arranged on one side of the first steel sheet (4), a connecting column (8) is fixedly connected to the inner side of the pressure plate (3), and one end of the connecting column (8) passes through multiple second steel sheets (7) and one first steel sheet (4) and extends to the outside thereof.

2. A friction clutch for an air-blow sprayer according to claim 1, characterized in that: A guide column (9) is fixedly connected to the inner side of the pressure plate (3), and one end of the guide column (9) passes through the outside of the first steel sheet (4). A compression spring (10) is installed between the pressure plate (3) and the first steel sheet (4), and the compression spring (10) is wound around the outer wall of the guide column (9).

3. The friction clutch for an air-blow pesticide sprayer according to claim 1, characterized in that: A plurality of protrusions (6) are fixedly connected to the inner side of the housing (1), and grooves matching the protrusions (6) are provided on the inner sides of the plurality of friction plates (5). The friction plates (5) are placed inside the housing (1) and are limited by the protrusions (6).

4. A friction clutch for an air-blow sprayer according to claim 2, characterized in that: An auxiliary guiding mechanism for reducing friction is provided on the inner side of the second steel sheet (7), the auxiliary guiding mechanism comprising a groove (15) provided on the inner side of the second steel sheet (7), a movable column (12) being slidably connected to the inner side of the groove (15), and a ball (14) being embedded in the top of the movable column (12).

5. The friction clutch for an air-blow sprayer according to claim 4, characterized in that: The auxiliary guiding mechanism further comprises a circular ring (11) fixedly connected to the outer wall of the movable column (12), and an elastic block (13) is installed between the circular ring (11) and the compression spring (10).

6. The friction clutch for an air-blow sprayer according to claim 4, characterized in that: Four movable columns (12) and four rolling balls (14) are arranged on the inner side of the second steel sheet (7), and the four movable columns (12) and the four rolling balls (14) are distributed at equal distances around the second steel sheet (7).

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