Electric stepless angle adjusting frame for combine harvester cleaning screen

Abstract

The utility model provides a combine harvester cleaning screen angle electric stepless adjusting frame relates to combine harvester technical field. This combine harvester cleaning screen angle electric stepless adjusting frame, including the mounting frame, the both sides symmetrical of mounting frame are provided with the fixed frame, the inner chamber of mounting frame is provided with screen, the inboard wall of fixed frame is seted up and moves the groove, the left and right sides surface wall symmetry of mounting frame front end is fixed with the pivot, the pivot and corresponding one side's moving groove activity cooperation. The utility model discloses through setting adjusting assembly, replaces traditional manual adjustment mode, makes screen can be electrically driven and carries out angle regulation, has solved the problem that transmission cleaning screen is inconvenient, time -consuming and low -efficiency when adjusting, through setting fixed mechanism, forms effective clamping to screen, makes screen can be stably fixed in the inner chamber of mounting frame, and the mechanism is convenient to use after fixing, provides great convenience when maintaining, cleaning to screen.

Description

Technical Field

[0001] This application relates to the field of combine harvester technology, and in particular to an electric continuously variable adjustment frame for the cleaning screen angle of a combine harvester. Background Technology

[0002] A combine harvester, also known as a combine harvester, is a machine that harvests crops in combination. In the early 1950s, it was called a combine harvester. It is a harvesting machine that can complete the harvesting, threshing, stalk separation, and removal of debris of cereal crops in one operation, and directly obtain the grains from the field.

[0003] In the cleaning system of a combine harvester, the tilt angle of the cleaning screen directly affects the grain separation effect and operating efficiency. Current technologies for adjusting the tilt angle of the cleaning screen have significant drawbacks: traditional manual adjustment requires stopping the machine, disassembling the cover plate, and manually loosening / tightening bolts, which relies on operator experience and is time-consuming and labor-intensive. Mechanical adjustment mechanisms (such as a four-bar linkage) suffer from poor stability and low adjustment accuracy, making them unsuitable for adapting to real-time changes in field conditions. Utility Model Content

[0004] This application provides an electric stepless adjustment frame for the angle of the cleaning screen of a combine harvester, in order to solve the problems of inconvenient angle adjustment and inconvenient replacement of the cleaning screen in the prior art.

[0005] This application provides an electric stepless adjustment frame for the cleaning screen angle of a combine harvester, including a mounting frame. Fixed frames are symmetrically arranged on both sides of the mounting frame. A screen is provided in the inner cavity of the mounting frame. A moving groove is opened on the inner side wall of the fixed frame. Rotating shafts are symmetrically fixed on the left and right side walls near the front end of the mounting frame. The rotating shafts are movably engaged with the moving groove on the corresponding side.

[0006] Two sets of adjustment components are symmetrically arranged on the lower side of the rear end of the mounting frame and are used to adjust the tilt angle of the mounting frame.

[0007] Four sets of fixing mechanisms are respectively set on the upper surface of the mounting frame near the four inner corners, and are used to fix the screen.

[0008] Preferably, the cross-section of the fixing frame is T-shaped, and the fixing frame has a plurality of evenly distributed mounting holes.

[0009] Preferably, the adjustment component includes:

[0010] A support plate is fixed to the inner wall of the mounting hole and near the rear end of the mounting frame. An electric push rod is fixedly installed on the upper surface of the support plate. A connecting block is fixedly installed at the top end of the telescopic rod of the electric push rod. A rotating block is rotatably installed on the connecting block and is fixed to the lower surface of the mounting frame.

[0011] Preferably, the lower part of the inner cavity of the mounting frame is symmetrically fixed with side plates, and the lower surface of the screen is in close contact with the upper surface of the side plates.

[0012] Preferably, the fixing mechanism includes:

[0013] A fixed base is fixedly installed on the upper surface of the mounting frame. The lower surface of the fixed base has a sliding groove 1 and a sliding groove 2. A fixed block is slidably installed in the sliding groove 1, and a sliding plate is slidably installed in the sliding groove 2. A spring 1 is fixed to the side of the sliding plate away from the fixed block. A pull rod 1 is inserted and installed on the outer wall of the fixed base away from the fixed block. The pull rod 1 passes through the sliding groove 2 and extends into the sliding groove 1 to be fixed to the fixed block. The pull rod 1 is fixedly connected to the sliding plate. A limiting component for limiting the sliding plate is provided on the upper part of the fixed base.

[0014] Preferably, the limiting component includes:

[0015] A limiting groove is formed on the inner top surface of the sliding groove two. A limiting block is slidably installed in the limiting groove. A pull rod two is inserted and installed on the upper surface of the fixed seat, and the bottom end of the pull rod two passes through the upper surface of the fixed seat and extends into the limiting groove to be fixed with the limiting block. A plurality of evenly distributed positioning holes are formed on the side wall of the pull rod two. A positioning groove is formed in the inner cavity of the fixed seat. A positioning block is slidably installed in the inner cavity of the positioning groove. A spring two is provided between the positioning block and the positioning groove.

[0016] Preferably, the end of the positioning block near the second pull rod has a hemispherical structure, and the positioning block is movably fitted with the positioning hole. Beneficial effects

[0017] Considering the problems of inconvenient angle adjustment and replacement of existing cleaning screens, an adjustment component is set up. By using the cooperation of electric push rods, connecting blocks, and rotating blocks, the traditional manual adjustment method is replaced, allowing the screen to be electrically driven for angle adjustment. This solves the problems of inconvenience, time consumption, and low efficiency in adjusting traditional transmission cleaning screens. By setting up a fixing mechanism, the screen is effectively clamped by the cooperation of the rotating shaft and the side plate, so that the screen can be stably fixed in the inner cavity of the mounting frame. At the same time, the fixed mechanism is easy to use, which greatly facilitates the maintenance and cleaning of the screen.

[0018] The above description is merely an overview of the technical solutions of the embodiments of this application. In order to better understand the technical means of the embodiments of this application and to implement them in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the embodiments of this application more obvious and understandable, specific implementation methods of this application are described below. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of the electric stepless adjustment frame for the cleaning screen angle of the combine harvester of this utility model.

[0021] Figure 2 This is an exploded view of the overall structure of the electric stepless adjustment frame for the cleaning screen angle of the combine harvester of this utility model.

[0022] Figure 3 This is a schematic diagram of the adjustment component in the electric stepless adjustment frame for the cleaning screen angle of the combine harvester of this utility model.

[0023] Figure 4 This is a schematic diagram of the fixing mechanism in the electric stepless adjustment frame for the cleaning screen angle of the combine harvester of this utility model.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Mounting frame; 2. Fixing bracket; 3. Screen; 4. Moving groove; 5. Rotating shaft; 6. Mounting hole; 7. Support plate; 8. Electric push rod; 9. Connecting block; 10. Rotating block; 11. Side plate; 12. Fixing seat; 13. Slide groove one; 14. Slide groove two; 15. Fixing block; 16. Slide plate; 17. Spring one; 18. Pull rod one; 19. Limiting block; 20. Pull rod two; 21. Positioning hole; 22. Positioning groove; 23. Positioning block; 24. Spring two. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims and drawings of this application are intended to cover non-exclusive inclusion.

[0028] The term "embodiment" as used herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of the phrase "embodiment" in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0029] The directional terms appearing in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of this application. For example, in the description of this application, terms such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0030] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, "connection" or "joining" in mechanical structures can refer to a physical connection, such as a fixed connection, for example, a connection fixed by fasteners, such as a connection fixed by screws, bolts, or other fasteners; a physical connection can also be a detachable connection, such as a snap-fit ​​or interlocking connection; a physical connection can also be an integral connection, such as a connection formed by welding, bonding, or integral molding. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0031] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0032] This utility model provides, for example Figure 1-4 The electric stepless adjustment frame for the cleaning screen angle of the combine harvester shown includes a mounting frame 1, fixed frames 2 are symmetrically arranged on both sides of the mounting frame 1, a screen 3 is arranged in the inner cavity of the mounting frame 1, a moving groove 4 is opened on the inner side wall of the fixed frame 2, and a rotating shaft 5 is symmetrically fixed on the left and right side surface walls near the front end of the mounting frame 1, and the rotating shaft 5 is rotatably engaged with the moving groove 4 on the corresponding side.

[0033] Two sets of adjustment components are symmetrically arranged on the lower side of the rear end of the mounting frame 1, and are used to adjust the tilt angle of the mounting frame 1.

[0034] Four sets of fixing mechanisms are respectively set on the upper surface of the mounting frame 1 near the four inner corners, and are used to fix the screen 3.

[0035] The fixed frame 2 has a T-shaped cross-section and multiple evenly distributed mounting holes 6 on it. By setting the mounting holes 6, the fixed frame 2 can be easily fixed and installed in the inner cavity of the combine harvester.

[0036] The adjustment components include:

[0037] Support plate 7 is fixed to the inner wall of mounting hole 6 and near the rear end of mounting frame 1. Electric push rod 8 is fixedly installed on the upper surface of support plate 7. Connecting block 9 is fixedly installed at the top of telescopic rod of electric push rod 8. Rotating block 10 is rotatably installed on connecting block 9 and fixed to the lower surface of mounting frame 1. By setting electric push rod 8, connecting block 9 is lifted. Through the rotational cooperation between connecting block 9 and rotating block 10 and the cooperation between rotating shaft 5 and moving groove 4 on the other side of mounting frame 1, the end of mounting frame 1 away from rotating shaft 5 can be lifted upward by electric push rod 8, thereby changing the tilt angle of mounting frame 1 and screen 3.

[0038] Among them, the lower part of the inner cavity of the mounting frame 1 is symmetrically fixed with side plates 11, and the lower surface of the screen 3 is closely attached to the upper surface of the side plate 11. By setting the side plate 11, it is easy to fix the screen 3 in the inner cavity of the side plate 11.

[0039] The fixed mechanism includes:

[0040] A fixed base 12 is fixedly installed on the upper surface of the mounting frame 1. The lower surface of the fixed base 12 is provided with a first groove 13 and a second groove 14. A fixed block 15 is slidably installed in the first groove 13, and a sliding plate 16 is slidably installed in the second groove 14. A spring 17 is fixed on the side of the sliding plate 16 away from the fixed block 15. A pull rod 18 is inserted and installed on the outer wall of the fixed base 12 away from the fixed block 15. The pull rod 18 passes through the second groove 14 and extends into the first groove 13 to be fixed to the fixed block 15. The pull rod 18 is fixedly connected to the sliding plate 16. A limiting component for limiting the sliding plate 16 is provided on the upper part of the fixed base 12. Four sets of fixing mechanisms are respectively set at the four corners of the screen 3. During operation, the lower surface of the fixed block 15 is tightly attached to the upper surface of the screen 3. Through the cooperation of the fixed block 15 and the side plate 11, the screen 3 is effectively clamped, so that the screen 3 can be stably fixed in the inner cavity of the mounting frame 1.

[0041] The limiting components include:

[0042] A limiting groove is formed on the inner top surface of the slide groove 14. A limiting block 19 is slidably installed in the limiting groove. A pull rod 20 is inserted into the upper surface of the fixed seat 12, and the bottom end of the pull rod 20 passes through the upper surface of the fixed seat 12 and extends into the limiting groove to be fixed with the limiting block 19. The side wall of the pull rod 20 has multiple evenly distributed positioning holes 21. The inner cavity of the fixed seat 12 has a positioning groove 22. A positioning block 23 is slidably installed in the inner cavity of the positioning groove 22. A spring 24 is set between the positioning block 23 and the positioning groove 22. When the fixed block 15 retracts, the limiting block 19 falls down and can lock the slide plate 16 facing the fixed block 15, preventing the slide plate 16 from pushing the fixed block 15 out of the slide groove 13 under the action of the spring 17. By setting the limiting component, the fixed block 15 can be stably retracted in the slide groove 13, saving manpower and providing great convenience.

[0043] The positioning block 23 has a hemispherical structure at the end near the second pull rod 20. The positioning block 23 is in movable cooperation with the positioning hole 21. When the second pull rod 20 is subjected to force and slides upward or downward, the positioning block 23 can be squeezed by the second pull rod 20 and pushed by the second spring 24, so as to continuously fall into the new positioning hole 21 and form a new positioning.

[0044] Working principle: When using the electric stepless adjustment frame for the cleaning screen angle of this combine harvester, when it is necessary to adjust the tilt angle of the screen 3, the electric push rod 8 is activated. The telescopic rod of the electric push rod 8 moves up or down, thereby driving the rear end of the mounting frame 1 to move up and down through the connecting block 9 and the rotating block 10. Due to the cooperation between the moving groove 4 at the other end of the mounting frame 1 and the rotating shaft 5, the mounting frame 1 can move backward or forward within the moving groove 4, and at the same time, the rear end of the mounting frame 1 moves up or down, thereby changing the tilt angle of the screen 3.

[0045] When the screen 3 needs to be repaired or disassembled, the operator pulls the pull rod 18 outward. The pull rod 18 moves the slide plate 16 and the fixing block 15 outward. At the same time, the slide plate 16 compresses the spring 17 until the fixing block 15 is completely retracted into the slide groove 13. At this time, the operator presses down the pull rod 20. The pull rod 20 moves the limiting block 19 to the side of the slide plate 16 near the fixing block 15 and limits the slide plate 16. At this time, the fixing block 15 and the upper surface of the screen 3 no longer form a constraint. Personnel can lift the screen 3 upwards to remove it from the inner cavity of the mounting frame 1. The same applies during installation. When the screen 3 is completely inside the inner cavity of the mounting frame 1, pull the second pull rod 20 upwards. At this time, the limiting block 19 moves upwards along with the second pull rod 20. After the sliding plate 16 loses the constraint of the limiting block 19, it is pushed inwards by the elasticity of the first spring 17. At this time, the fixing block 15 forms a new constraint with the upper surface of the screen 3, and the screen 3 is fixed in the inner cavity of the mounting frame 1.

[0046] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit it. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A combined harvester cleaning sieve angle electric stepless adjustment frame, comprising a mounting frame (1), characterized in that: The mounting frame (1) is symmetrically provided with fixing frames (2) on both sides. The inner cavity of the mounting frame (1) is provided with a screen (3). The inner side wall of the fixing frame (2) is provided with a moving groove (4). The mounting frame (1) is symmetrically fixed with rotating shafts (5) on the left and right side surfaces near the front end. The rotating shafts (5) are movably engaged with the moving grooves (4) on the corresponding side. Two sets of adjustment components are symmetrically arranged on the lower side of the rear end of the mounting frame (1) and are used to adjust the tilt angle of the mounting frame (1). Four sets of fixing mechanisms are respectively set on the upper surface of the mounting frame (1) near the four inner corners, and are used to fix the screen (3).

2. The electric stepless adjustment frame for the angle of the combine harvester cleaning screen according to claim 1, characterized in that: The cross-section of the fixing frame (2) is T-shaped, and the fixing frame (2) has a plurality of evenly distributed mounting holes (6).

3. The electric stepless adjustment frame for the angle of the combine harvester cleaning screen according to claim 1, characterized in that: The adjustment component includes: A support plate (7) is fixed on the inner wall of the mounting hole (6) and close to the rear end of the mounting frame (1). An electric push rod (8) is fixedly installed on the upper surface of the support plate (7). A connecting block (9) is fixedly installed at the top of the telescopic rod of the electric push rod (8). A rotating block (10) is rotatably installed on the connecting block (9), and the rotating block (10) is fixed to the lower surface of the mounting frame (1).

4. The electric stepless adjustment frame for the angle of the combine harvester cleaning screen according to claim 1, characterized in that: The lower part of the inner cavity of the mounting frame (1) is symmetrically fixed with side plates (11), and the lower surface of the screen (3) is closely attached to the upper surface of the side plate (11).

5. The electric stepless adjustment frame for the angle of the combine harvester cleaning screen according to claim 1, characterized in that: The fixing mechanism includes: A fixed seat (12) is fixedly installed on the upper surface of the mounting frame (1). The lower surface of the fixed seat (12) is provided with a sliding groove 1 (13) and a sliding groove 2 (14). A fixed block (15) is slidably installed in the sliding groove 1 (13). A sliding plate (16) is slidably installed in the sliding groove 2 (14). A spring 1 (17) is fixed on the side of the sliding plate (16) away from the fixed block (15). A pull rod 1 (18) is inserted into the outer wall of the fixed seat (12) away from the fixed block (15). The pull rod 1 (18) passes through the sliding groove 2 (14) and extends to the sliding groove 1 (13) to be fixed to the fixed block (15). The pull rod 1 (18) is fixedly connected to the sliding plate (16). A limiting component for limiting the sliding plate (16) is provided on the upper part of the fixed seat (12).

6. The electric stepless adjustment frame for the angle of the combine harvester cleaning screen according to claim 5, characterized in that: The limiting component includes: A limiting groove is provided on the inner top surface of the sliding groove (14). A limiting block (19) is slidably installed in the limiting groove. A pull rod (20) is inserted into the upper surface of the fixed seat (12). The bottom end of the pull rod (20) passes through the upper surface of the fixed seat (12) and extends into the limiting groove to be fixed with the limiting block (19). A plurality of evenly distributed positioning holes (21) are provided on the side wall of the pull rod (20). A positioning groove (22) is provided in the inner cavity of the fixed seat (12). A positioning block (23) is slidably installed in the inner cavity of the positioning groove (22). A spring (24) is provided between the positioning block (23) and the positioning groove (22).

7. The electric stepless adjustment frame for the angle of the combine harvester cleaning screen according to claim 6, characterized in that: The positioning block (23) has a hemispherical structure at one end near the second pull rod (20), and the positioning block (23) is in movable cooperation with the positioning hole (21).

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