Cutter driving device and harvester

Abstract

The invention provides a cutter driving device and a harvester, and relates to the field of cutter driving. The cutting knife driving devices are symmetrically arranged, and each cutting knife driving device comprises an assembling assembly, a driving assembly and a driving assembly, the electromagnetic assembly is arranged in the assembling assembly and can continuously generate an electromagnetic field; and the magnet assembly is arranged in the assembling assembly, the electromagnetic assembly is arranged on the peripheral side of the magnet assembly in a sleeving mode, and the magnet assembly can generate a permanent magnetic field interacting with the electromagnetic field so as to form traveling waves used for driving the cutting knife to do reciprocating linear motion. The excitation force generated by the driving mode is small, so that the vibration excitation can be reduced; in addition, the cutting knife driving device adopts a symmetrically arranged structure, so that the inertial impact force generated in the operation process of the cutting knife can be reduced to the greatest extent. In this way, the service life of parts and the driving comfort of a driver can be effectively guaranteed.

Description

Technical Field

[0001] The present application relates to the field of cutter drive, and in particular to a cutter drive device and a harvester. Background Art

[0002] The harvesting table is the main component of the harvesting machinery, which is responsible for the tasks of cutting and feeding crops. The cutter and its drive mechanism are one of the core components of the harvesting table. The quality of its performance not only affects the quality of cutting, but also has an important impact on the service life of the components and the overall performance of the vehicle.

[0003] For the cutting knife, its left and right reciprocating linear movement is mainly achieved through the cutting knife driving mechanism. The cutting knife driving mechanism currently on the market is basically dominated by the swing drive form represented by the swing ring box. However, the swing ring box will generate unbalanced inertial impact force during the left and right swinging movement, which will reduce the service life of components, and the large vibration transmitted to the cab will affect the driving comfort of the operator. Summary of the invention

[0004] In view of this, the purpose of the present application is to provide a cutter drive device and a harvester to solve the problem that the existing cutter drive mechanism generates unbalanced inertial impact force, thereby reducing the service life of components and affecting operating comfort.

[0005] According to the above purpose, a first aspect of the present invention provides a cutting knife driving device, wherein the cutting knife driving device is symmetrically arranged, and the cutting knife driving device comprises:

[0006] An assembly component capable of being connected to a cutting knife;

[0007] An electromagnetic component, disposed inside the assembly component and capable of continuously generating an electromagnetic field; and

[0008] The magnet assembly is arranged inside the assembly assembly and the electromagnetic assembly is sleeved on the outer peripheral side of the magnet assembly. The magnet assembly can generate a permanent magnetic field that interacts with the electromagnetic field to form a traveling wave for driving the cutting knife to reciprocate linear motion.

[0009] Preferably, the assembly assembly includes a first assembly portion and a second assembly portion, the electromagnetic assembly includes a first electromagnetic component group and a second electromagnetic component group respectively located inside the first assembly portion and the second assembly portion; the magnet assembly includes a first magnet component group and a second magnet component group respectively located inside the first assembly portion and the second assembly portion;

[0010] The first assembly portion and the second assembly portion are symmetrically arranged, the first electromagnetic component group and the second electromagnetic component group are symmetrically arranged, and the first magnet component group and the second magnet component group are symmetrically arranged.

[0011] Preferably, the first assembly portion includes a first housing and a first connecting shaft, a first through hole corresponding to the first connecting shaft is formed at a first end of the first housing in the axial direction, so that the first end of the first connecting shaft can extend to the outside of the first housing through the first through hole; and a second end of the first housing in the axial direction is formed as an open structure;

[0012] The first assembly portion further includes first vibration-damping blocks disposed at both ends of the interior of the first housing.

[0013] Preferably, the first electromagnetic component group includes a plurality of first cores and a plurality of first windings, and the first cores and the first windings are both formed into an annular structure; the first electromagnetic component group is nested in the inner wall of the first shell and the first electromagnetic component is located between the two first vibration damping blocks.

[0014] Preferably, along the axial direction of the first shell, the first cores and the first windings are arranged alternately in sequence;

[0015] Alternatively, a groove is formed on the outer surface of the first core, and the first winding is correspondingly wound inside the groove.

[0016] Preferably, the first magnet component group is sleeved on the outer side of the first connecting shaft, and a magnetic gap is formed between the outer side of the first magnet component group and the inner side of the first electromagnetic component group.

[0017] Preferably, along the axial direction of the first connecting shaft, the first magnet assembly includes first permanent magnets and first magnetic poles that are alternately arranged in sequence; and the polarities of the ends of any two adjacent permanent magnets that are close to each other are the same.

[0018] Preferably, the second assembly part includes a second shell, a second connecting shaft and second vibration damping blocks arranged at both ends of the interior of the second shell; the second electromagnetic component group includes multiple second iron cores and multiple second windings; the second magnet component group includes multiple second permanent magnets and second magnetic poles.

[0019] Preferably, the second end of the first shell in the axial direction and the first end of the second shell in the axial direction are provided with a plurality of connecting parts corresponding to each other, and the first shell and the second shell are detachably connected through the connecting parts and connecting pieces corresponding to the connecting parts.

[0020] According to a second aspect of the present invention, there is provided a harvester, wherein the harvester is provided with the cutter drive device as described above.

[0021] According to the cutter drive device and harvester of the present invention, the electromagnetic component and the magnet component are arranged in the assembly component, and then the device is connected to the cutter through the assembly component; when the electromagnetic component is powered, it can generate a continuous electromagnetic field, which interacts with the permanent magnetic field generated by the magnet component, that is, it can form a traveling wave to drive the cutter to reciprocate in a straight line. The excitation force generated by this driving mode is small, so that vibration excitation can be reduced; in addition, the cutter drive device of the present invention adopts a symmetrically arranged structure, so that the inertial impact force generated during the operation of the cutter can be minimized. In this way, the service life of the components and the operating comfort of the driver can be effectively guaranteed.

[0022] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application, 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 present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 is a cross-sectional view of a cutter driving device according to an embodiment of the present invention;

[0025] Figure 2 is a cross-sectional view along the AA direction according to an embodiment of the present invention;

[0026] Figure 3 is a cross-sectional view along the BB direction according to an embodiment of the present invention;

[0027] Figure 4 is a cross-sectional view taken along the CC direction according to an embodiment of the present invention.

[0028] Icon: 110-first shell; 111-first connecting shaft; 112-first vibration damping block; 120-second shell; 121-second connecting shaft; 122-second vibration damping block; 130-axial end seal; 210-first winding; 211-first iron core; 220-second winding; 222-second iron core; 310-first permanent magnet; 311-first magnetic pole; 320-second permanent magnet; 321-second magnetic pole; 410-connecting part; 420-magnetic gap. DETAILED DESCRIPTION

[0029] The following specific embodiments are provided to help the reader obtain a comprehensive understanding of the methods, devices and / or systems described herein. However, after understanding the disclosure of the present application, various changes, modifications and equivalents of the methods, devices and / or systems described herein will be apparent. For example, the order of operations described herein is merely an example, and is not limited to the order set forth herein, but in addition to the operations that must occur in a particular order, changes that will be apparent after understanding the disclosure of the present application may be made. In addition, in order to improve clarity and brevity, descriptions of features known in the art may be omitted.

[0030] The features described herein may be implemented in different forms and should not be interpreted as being limited to the examples described herein. Rather, the examples described herein have been provided only to illustrate some of the many possible ways of implementing the methods, devices and / or systems described herein that will be apparent after understanding the disclosure of the present application.

[0031] Throughout the specification, when an element (such as a layer, a region, or a substrate) is described as being “on”, “connected to”, “bound to”, “over”, or “covering” another element, it may be directly “on”, “connected to”, “bound to”, “over”, or “covering” another element, or one or more other elements may be present between them. In contrast, when an element is described as being “directly on”, “directly connected to”, “directly bound to”, “directly over”, or “directly covering” another element, there may be no other elements present between them.

[0032] As used herein, the term "and / or" includes any one of the associated listed items and any combination of any two or more items.

[0033] Although terms such as "first," "second," and "third" may be used herein to describe various members, components, regions, layers, or portions, these members, components, regions, layers, or portions are not limited by these terms. Rather, these terms are only used to distinguish one member, component, region, layer, or portion from another member, component, region, layer, or portion. Therefore, without departing from the teachings of the examples described herein, the first member, component, region, layer, or portion referred to may also be referred to as the second member, component, region, layer, or portion.

[0034] For ease of description, spatial relational terms such as "above", "upper", "below", and "lower" may be used herein to describe the relationship of one element to another element as shown in the accompanying drawings. Such spatial relational terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. For example, if the device in the accompanying drawings is turned over, an element described as being "above" or "upper" relative to another element will subsequently be "below" or "lower" relative to the other element. Therefore, the term "above" includes both "above" and "below" orientations depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relational terms used herein will be interpreted accordingly.

[0035] The terms used herein are only used to describe various examples and are not used to limit the present disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms "include", "comprise" and "have" list the stated features, quantities, operations, components, elements and / or their combinations that exist, but do not exclude the existence or addition of one or more other features, quantities, operations, components, elements and / or their combinations.

[0036] Variations in the shapes shown in the drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the drawings but include variations in shapes that occur during manufacturing.

[0037] The features of the examples described herein may be combined in various ways that will be apparent after understanding the disclosure of the present application. In addition, although the examples described herein have various configurations, other configurations are possible as will be apparent after understanding the disclosure of the present application.

[0038] According to a first aspect of the present invention, there is provided a cutting knife driving device, such as Figures 1 to 4 As shown, the cutter drive device in this embodiment is symmetrically arranged, and includes an assembly component, an electromagnetic component and a magnet component. Hereinafter, the specific connection relationship and positional relationship of each component of the above-mentioned components of the cutter drive device according to the present invention will be described in detail.

[0039] like Figure 1As shown, the assembly component in this embodiment includes a first assembly part and a second assembly part, the electromagnetic component includes a first electromagnetic component group and a second electromagnetic component group respectively located inside the first assembly part and the second assembly part; the magnet component includes a first magnet component group and a second magnet component group respectively located inside the first assembly part and the second assembly part. The symmetrical arrangement of this drive device actually means: the first assembly part and the second assembly part are symmetrically arranged, the first electromagnetic component group and the second electromagnetic component group are symmetrically arranged, and the first magnet component group and the second magnet component group are symmetrically arranged. In this way, the drive device can minimize the inertial impact force generated during the operation of the cutting knife.

[0040] Specifically, Figure 1 and Figure 4 As shown, the first assembly part includes a first shell 110 and a first connecting shaft 111. The first shell 110 is formed into a cylindrical structure, and a first through hole corresponding to the first connecting shaft 111 is formed at the first end in the axial direction thereof (the first shell 110 can be composed of a main body and an end cover, and the first through hole can be formed at the center of the end cover), so that the first end of the first connecting shaft 111 can extend to the outside of the first shell 110 through the first through hole, so that the first connecting shaft 111 can be connected to the cutting knife (the connection method is not fixed, as long as it can drive the cutting knife to move stably), and because the working environment of the device is relatively harsh, the first end of the first shell 110 is also provided with an axial end seal 130 to prevent dust or debris from entering the shell and affecting the working performance of each component, thereby ensuring the use effect of the following electromagnetic assembly and magnet assembly.

[0041] Furthermore, the first connecting shaft 111 in this embodiment can be extended and retracted through the first through hole, that is, the first connecting shaft 111 can perform linear motion (an inherent function of the linear motor, which will not be described in detail), and the controller combined with an appropriate control algorithm can achieve stepless speed regulation of the first connecting shaft 111. In addition, the second end of the first housing 110 in the axial direction is formed into an open structure so that it can be assembled correspondingly with the first end of the second housing 120 described below.

[0042] Furthermore, the first assembly portion also includes first vibration-damping blocks 112 disposed at both ends of the first shell 110, which can further weaken the vibration generated during the operation of the device, thereby effectively ensuring the service life of various components and the operating comfort of the driver.

[0043] In this embodiment, if Figures 1 to 3As shown, the first electromagnetic component group includes a plurality of first cores 211 and a plurality of first windings 210. The first windings 210 are used to generate an electromagnetic field, and the first cores 211 can increase the magnetic flux and reduce the hysteresis loss so as to form a magnetic circuit, thereby improving the performance of the device. The first cores 211 and the first windings 210 are both formed into an annular structure. The first electromagnetic component group is nested in the inner wall of the first shell 110 and is located between the two first vibration damping blocks. The connection method between the first electromagnetic component group and the first shell 110 is not fixed. For example, it can be connected to the first shell 110 stably by concave-convex matching or snap-on connection. In this way, when the first winding 210 is powered, the first electromagnetic component group can generate a continuous electromagnetic field.

[0044] Specifically, Figure 1 As shown, along the axial direction of the first shell 110, the first core 211 and the first winding 210 are alternately arranged in sequence, however, the arrangement of the first core 211 and the first winding 210 is not limited thereto, for example, a groove may be provided on the outer surface of the first core 211, the groove being arranged radially around the outer side of the first core 211, and the first winding 210 being correspondingly wound around the inside of the groove.

[0045] In this embodiment, the first magnet component group is sleeved on the outer side of the first connecting shaft 111 by means of interference fit, that is, the first magnet component group and the first connecting shaft 111 move linearly synchronously; in addition, a magnetic gap 420 is formed between the outer side of the first magnet component group and the inner side of the first electromagnetic component group, and the magnetic gap 420 can reduce the magnetic resistance to improve the operating efficiency of the device. Along the axial direction of the first connecting shaft 111, the first magnet component group includes first permanent magnets 310 and first magnetic poles 311 arranged alternately in sequence, and as shown in FIG. Figure 1 As shown, the polarities of the ends of any two adjacent permanent magnets close to each other are the same. The magnet assembly can generate a permanent magnetic field that interacts with the electromagnetic field to form a traveling wave for driving the cutting knife to reciprocate linearly.

[0046] Similarly, the second assembly part includes a second housing 120, a second connecting shaft 121, and second vibration-damping blocks 122 disposed at both ends of the interior of the second housing 120; the second electromagnetic component group includes a plurality of second iron cores 222 and a plurality of second windings 220; and the second magnet component group includes a plurality of second permanent magnets 320 and second magnetic poles 321. Based on the symmetrical arrangement structure of the present drive device, the specific structures of the second assembly part, the second electromagnetic component group, and the second magnet component group are not described in detail.

[0047] In this embodiment, if Figure 1 and Figure 4As shown, a plurality of connecting parts 410 corresponding to each other are provided at the second end of the axial direction of the first shell 110 and the first end of the axial direction of the second shell 120 (the connecting parts 410 are correspondingly provided around the first shell 110 and the second shell 120), and the first shell 110 and the second shell 120 are detachably connected through the connecting parts 410 and the connecting members corresponding to the connecting parts 410. The connecting members may be screws or studs, in which case the connecting parts 410 are formed with corresponding threaded holes; or the connecting members may also be formed as buckles or pins, etc.

[0048] In addition, under the premise of satisfying the strength and reliability of the device, the first connecting shaft 111 and the second connecting shaft 121 can be configured as a hollow structure to reduce the overall weight of the device.

[0049] According to the above-mentioned cutter drive device and harvester of the present invention, the electromagnetic component and the magnet component are arranged in the assembly component, and then the device is connected to the cutter through the assembly component; when the electromagnetic component is powered, it can generate a continuous electromagnetic field, which interacts with the permanent magnetic field generated by the magnet component, that is, it can form a traveling wave to drive the cutter to reciprocate in a straight line. The excitation force generated by this driving mode is small, so that vibration excitation can be reduced; in addition, the cutter drive device of the present invention adopts a symmetrically arranged structure, which controls the running phase of the first connecting shaft 111 and the second connecting shaft 121 through a controller and combined with an appropriate control algorithm, and reciprocates and runs in a straight line at about 180 degrees, so as to minimize the inertial impact force generated during the operation of the cutter. In this way, the service life of the components and the operating comfort of the driver can be effectively guaranteed.

[0050] According to a second aspect of the present invention, there is provided a harvester, wherein the harvester is provided with the cutter drive device as described above.

[0051] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the present application, which are used to illustrate the technical solutions of the present application, rather than to limit them. The protection scope of the present application is not limited thereto. Although the present application is described in detail with reference to the above-described embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the above-described embodiments within the technical scope disclosed in the present application, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be described in the protection scope of the claims.

Claims

1. A cutting knife driving device, characterized in that: The cutting knife driving device is symmetrically arranged, and the cutting knife driving device comprises: An assembly component capable of being connected to a cutting knife; An electromagnetic component, disposed inside the assembly component and capable of continuously generating an electromagnetic field; and The magnet assembly is arranged inside the assembly assembly and the electromagnetic assembly is sleeved on the outer peripheral side of the magnet assembly. The magnet assembly can generate a permanent magnetic field that interacts with the electromagnetic field to form a traveling wave for driving the cutting knife to reciprocate linear motion.

2. The cutting knife driving device according to claim 1, characterized in that: The assembly assembly includes a first assembly portion and a second assembly portion, the electromagnetic assembly includes a first electromagnetic component group and a second electromagnetic component group respectively located inside the first assembly portion and the second assembly portion; the magnet assembly includes a first magnet component group and a second magnet component group respectively located inside the first assembly portion and the second assembly portion; The first assembly portion and the second assembly portion are symmetrically arranged, the first electromagnetic component group and the second electromagnetic component group are symmetrically arranged, and the first magnet component group and the second magnet component group are symmetrically arranged.

3. The cutting knife driving device according to claim 2, characterized in that: The first assembly portion includes a first shell and a first connecting shaft, wherein a first through hole corresponding to the first connecting shaft is formed at a first end of the first shell in an axial direction, so that the first end of the first connecting shaft can extend to the outside of the first shell through the first through hole; and a second end of the first shell in an axial direction is formed as an open structure; The first assembly portion further includes first vibration-damping blocks disposed at both ends of the interior of the first housing.

4. The cutting knife driving device according to claim 3, characterized in that: The first electromagnetic component group includes a plurality of first iron cores and a plurality of first windings, wherein the first iron cores and the first windings are both formed into an annular structure; the first electromagnetic component group is nested in the inner wall of the first shell and the first electromagnetic component is located between the two first vibration damping blocks.

5. The cutting knife driving device according to claim 4, characterized in that: Along the axial direction of the first shell, the first iron cores and the first windings are arranged alternately in sequence; Alternatively, a groove is formed on the outer surface of the first core, and the first winding is correspondingly wound inside the groove.

6. The cutting knife driving device according to claim 5, characterized in that: The first magnet component group is sleeved on the outer side of the first connecting shaft, and a magnetic gap is formed between the outer side of the first magnet component group and the inner side of the first electromagnetic component group.

7. The cutting knife driving device according to claim 6, characterized in that: Along the axial direction of the first connecting shaft, the first magnet assembly includes first permanent magnets and first magnetic poles that are alternately arranged in sequence; the polarities of the ends of any two adjacent permanent magnets that are close to each other are the same.

8. The cutting knife driving device according to claim 7, characterized in that: The second assembly part includes a second shell, a second connecting shaft and second vibration damping blocks arranged at both ends of the interior of the second shell; the second electromagnetic component group includes multiple second iron cores and multiple second windings; the second magnet component group includes multiple second permanent magnets and second magnetic poles.

9. The cutting knife driving device according to claim 8, characterized in that: The second end of the first shell in the axial direction and the first end of the second shell in the axial direction are provided with a plurality of connecting parts corresponding to each other, and the first shell and the second shell are detachably connected through the connecting parts and connecting pieces corresponding to the connecting parts.

10. A harvester, characterized in that: The harvester is provided with a cutter drive device as described in any one of claims 1 to 9.

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