Harvester cleaning sieve with adjustable opening degree and harvester

Abstract

The utility model relates to the technical field of harvester cleaning sieve opening adjustment, in particular to an opening-adjustable harvester cleaning sieve and a harvester. The harvester cleaning sieve comprises a cleaning sieve body and a sieve piece motor. The screening piece motor comprises a motor push rod at the output end and a manual knob arranged on a motor shell. The motor push rod is connected with the screen piece through a transmission mechanism, and the opening degree of the screen piece can be adjusted through stretching or retracting of the motor push rod. And the manual knob can adjust the expansion degree of the motor push rod. When a driver drives the combine harvester to harvest crops, the driver can control the opening degree of the screen piece of the cleaning screen in a cab through a control switch of the screen piece motor or a manual knob, the motor push rod of the screen piece motor can stretch out or retract in the two modes, and therefore the opening degree of the screen piece is adjusted. If the motor breaks down and the control switch of the motor cannot be used, a driver can make emergency adjustment through a manual knob, and operation of the driver is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of the opening degree adjustment of a cleaning sieve of a harvester, in particular to a cleaning sieve of a harvester with adjustable opening degree and a harvester. Background Art

[0002] With the continuous development of agricultural mechanization, the way of agricultural production and harvesting has gradually changed from manual to mechanical, which has greatly improved the agricultural production efficiency, and the number of execution motors on combine harvesters is also increasing continuously.

[0003] When harvesting grain crops, the opening degree of the cleaning sieve of a combine harvester is one of the important factors affecting the cleaning quality. The so-called opening degree of the cleaning sieve refers to the opening angle of the sieve plate. At present, the mainstream cleaning sieves of combine harvesters on the market are adjusted by manually adjusting bolts or by a motor driving bolts. The disadvantage of this adjustment is that it is necessary to manually use a wrench to adjust each time. If the motor is damaged, it is necessary to disassemble the motor and then manually adjust it, which is time-consuming and laborious. Summary of the Utility Model

[0004] The utility model aims to improve the problem of inconvenient adjustment of the opening degree of the cleaning sieve in the background art, and provides a cleaning sieve of a harvester with adjustable opening degree.

[0005] The implementation manner of the cleaning sieve of the harvester is as follows:

[0006] It includes a cleaning sieve body and a sieve plate motor;

[0007] The sieve plate motor includes a motor push rod at the output end and a manual knob arranged on the motor housing;

[0008] The motor push rod is connected with the sieve plate of the cleaning sieve body through a transmission mechanism, and the extension or retraction of the motor push rod can adjust the opening degree of the sieve plate;

[0009] The manual knob can adjust the telescopic degree of the motor push rod.

[0010] In a preferred embodiment, the transmission mechanism includes a connecting rod, a plurality of sieve plate adjusting rods and a plurality of sieve shafts; the motor push rod is connected with the connecting rod, the connecting rod is connected with each sieve plate adjusting rod, each sieve plate adjusting rod is respectively rotatably connected with a plurality of sieve shafts, and the sieve plates are respectively installed on the sieve shafts.

[0011] In a preferred embodiment, two or more sieve plate motors are arranged in parallel.

[0012] In a preferred embodiment, the cleaning sieve body includes a cleaning sieve frame, the transmission mechanism and the sieve plates are arranged in the cleaning sieve frame, and the sieve plate motor is installed at one end of the cleaning sieve frame close to the cab of the harvester.

[0013] In a preferred embodiment, the harvester cleaning screen further comprises an extension rod; the extension rod is connected to the manual knob, so that the extension rod and the manual knob can rotate in conjunction.

[0014] In a preferred embodiment, a knob or a handle is provided at the end of the extension rod.

[0015] For a harvester cleaning screen without an extension rod, the utility model further provides a harvester, which is implemented as follows: comprising a harvester cleaning screen as described in a cab;

[0016] The manual knob and the control switch of the screen motor are both located in the cab.

[0017] In a preferred embodiment, the screen motor passes through the wall of the cab so that the manual knob is located in the cab.

[0018] In a preferred embodiment, a sealing structure is provided at the connection between the screen motor and the chamber wall.

[0019] With respect to the harvester cleaning screen with an extension rod, the utility model further provides another harvester, comprising a cab and the harvester cleaning screen;

[0020] The end of the extension rod and the control switch of the screen motor are both located in the cab.

[0021] Compared with the prior art, the utility model has the following beneficial effects:

[0022] When the driver drives the combine harvester to harvest crops, the driver can control the opening of the cleaning screen through the control switch of the screen motor or the manual knob in the cab. Both methods can extend or retract the motor push rod of the screen motor to adjust the screen opening; if the motor fails and the motor control switch cannot be used, the driver can make emergency adjustments through the manual knob, which is convenient for the driver's operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 A schematic structural diagram of a harvester cleaning screen with a screen motor provided by the utility model from a first perspective;

[0025] Figure 2 Structural schematic diagram of the second perspective of the cleaning sieve of the harvester with a sieve motor provided by the present utility model;

[0026] Figure 3 Structural schematic diagram of the sieve motor provided by the present utility model;

[0027] Reference numerals in the figure:

[0028] 1 - Sieve motor;

[0029] 11 - Motor push rod;

[0030] 12 - Manual knob;

[0031] 2 - Cleaning sieve frame;

[0032] 3 - Connecting rod;

[0033] 4 - Sieve adjusting rod;

[0034] 5 - Sieve shaft;

[0035] 6 - Sieve. Specific implementation manners

[0036] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. The components of the embodiments of the present utility model described and labeled in the accompanying drawings can be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the present utility model to be protected, but merely represents the selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the scope of protection of the present utility model.

[0038] It should be noted that: Similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0039] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present utility model is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation on the present utility model. In addition, terms such as "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0040] In addition, terms such as "horizontal", "vertical", "hanging" do not mean that the component is required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0041] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0042] The following will describe in detail some embodiments of the present utility model with reference to the drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0043] The structure of the threshing sieve with adjustable opening degree provided in this embodiment is as Figures 1 to 3 shown, and mainly includes a threshing sieve body and a sieve sheet motor.

[0044] The sieve sheet motor 1 includes a motor push rod 11 at the output end and a manual knob 12 arranged on the motor housing; the motor push rod 11 is connected to the sieve sheet 6 of the threshing sieve body through a transmission mechanism, and the extension or retraction of the motor push rod 11 can adjust the opening degree of the sieve sheet 6; the manual knob 12 can also adjust the telescopic degree of the motor push rod 11.

[0045] A combine harvester provided in this embodiment includes a cab and the above-mentioned threshing sieve of the combine harvester;

[0046] The manual knob 12 and the control switch of the sieve sheet motor 11 are both located in the cab.

[0047] When the driver drives the combine harvester to harvest crops, the driver can control the opening of the cleaning screen 6 through the control switch of the screen motor 11 or the manual knob 12 in the cab. Both methods can extend or retract the motor push rod 11 of the screen motor 1, thereby adjusting the opening of the screen 6; if the motor fails and the control switch of the screen motor 11 cannot be used, the driver can make emergency adjustments through the manual knob 12, which is convenient for the driver's operation.

[0048] In this embodiment, the cleaning screen body includes a cleaning screen frame 2, a transmission mechanism and a screen plate 6 are arranged in the cleaning screen frame 2, and a screen plate motor 1 is installed at one end of the cleaning screen frame close to the harvester cab.

[0049] The transmission mechanism includes a connecting rod 3, several screen adjustment rods 4 and several screen shafts 5; the motor push rod 11 is connected to the connecting rod 3, the connecting rod 3 is connected to each screen adjustment rod 4, each screen adjustment rod 4 is rotatably connected to multiple screen shafts 5, and a screen 6 is installed on each screen shaft 5.

[0050] The motor push rod 11 of the screen motor 1 extends or retracts, which can drive the connecting rod 3 to make linear motion synchronously. The linear motion of the connecting rod 3 can drive the screen adjustment rod 4 connected thereto to make linear motion, thereby driving each screen shaft 5 to rotate. The rotation of the screen shaft 5 drives each screen 6 to rotate, thereby realizing the opening adjustment.

[0051] In order to make the adjustment of the opening of the screen more reliable, reduce the load of the screen motor and increase the service life of the screen motor, two or more screen motors can be used to perform zone control on the screen 6 of the cleaning screen. More than two screen motors 2 are arranged in parallel and can work synchronously to reduce the load of a single screen motor; they can also be connected in zones and work independently to reduce the number of screens 6 to be controlled by a single screen motor, which can also have the effect of reducing the load of a single screen motor.

[0052] In this embodiment, in order to allow the driver to adjust the opening of the cleaning screen in the cab, the rear end of the screen motor 1 needs to pass through the wall of the cab so that the manual knob 12 is located in the cab.

[0053] In order to ensure the sealing of the cab, in a preferred embodiment, a sealing structure is provided at the connection between the screen motor 1 and the wall of the cab.

[0054] Because the installation position of the screen motor 1 is usually in the corner of the cab, it is not convenient to operate. Therefore, in another implementation of this embodiment, in order to make it more convenient for the driver to manually adjust the screen motor 1, the harvester cleaning screen can also include an extension rod. One end of the extension rod is connected to the manual knob 12, so that the extension rod and the manual knob 12 can rotate in conjunction.

[0055] A knob or a handle can also be provided at the end of the extension rod, enabling the driver to conveniently and labor - savingly adjust the sieve motor 1.

[0056] The harvester corresponding to this embodiment includes a cab and a harvester cleaning sieve; the end of the extension rod and the control switch of the sieve motor are both located inside the cab. In this way, the end of the extension rod can be set at a position easily accessible by the driver, facilitating the driver's operation.

[0057] The extension rod can also adopt a multi - stage transmission method, so that the extension rod is not limited to the shape of a straight rod.

[0058] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, various modifications and changes can be made to the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A harvester cleaning screen with adjustable opening, characterized in that: Including cleaning screen body and screen motor; The sieve motor comprises a motor push rod at the output end and a manual knob arranged on the motor housing; The motor push rod is connected to the screen plate of the cleaning screen body through a transmission mechanism, and the extension or retraction of the motor push rod can adjust the opening of the screen plate; The manual knob can adjust the extension and retraction degree of the motor push rod.

2. The harvester cleaning screen according to claim 1, characterized in that: The transmission mechanism includes a connecting rod, a plurality of screen adjustment rods and a plurality of screen shafts; the motor push rod is connected to the connecting rod, the connecting rod is rotatably connected to each of the screen adjustment rods, each of the screen adjustment rods is rotatably connected to a plurality of the screen shafts, and the screen is installed on each of the screen shafts.

3. The harvester cleaning screen according to claim 1, characterized in that: The screen motors are two or more arranged in parallel.

4. The harvester cleaning screen according to claim 1, characterized in that: The cleaning screen body comprises a cleaning screen frame, the transmission mechanism and the screen plate are arranged in the cleaning screen frame, and the screen plate motor is installed at one end of the cleaning screen frame close to the harvester cab.

5. The harvester cleaning screen according to claim 1, characterized in that: It also includes an extension rod; the extension rod is connected to the manual knob, and the extension rod and the manual knob can rotate in conjunction.

6. The harvester cleaning screen according to claim 5, characterized in that: A knob or a handle is arranged at the end of the extension rod.

7. A harvester, characterized in that: A harvester cleaning screen comprising a cab and any one of claims 1 to 4; The manual knob and the control switch of the screen motor are both located in the cab.

8. The harvester according to claim 7, characterized in that: The screen motor passes through the wall of the cab so that the manual knob is located in the cab.

9. The harvester cleaning screen according to claim 8, characterized in that: A sealing structure is provided at the connection between the screen motor and the chamber wall.

10. A harvester, characterized in that: It comprises a cab and a harvester cleaning screen as claimed in claim 5 or 6; The end of the extension rod and the control switch of the screen motor are both located in the cab.

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