Cutter driving device and harvester

Abstract

The invention provides a cutter driving device and a harvester, and relates to the field of cutter driving. According to the cutting knife driving device, the electromagnetic assembly and the magnet assembly are arranged in the assembling assembly, and then the cutting knife driving device is connected with the cutting knife through the assembling assembly; when power is supplied to the electromagnetic assembly, the electromagnetic assembly can generate a continuous electromagnetic field, the electromagnetic field interacts with a permanent magnetic field generated by the magnet assembly, namely traveling waves can be formed to drive the cutting knife to do reciprocating linear motion, exciting force generated by the driving mode is small, and therefore vibration excitation can be reduced; in addition, the cutting knife driving device is further provided with a vibration reduction assembly, the vibration reduction assembly specifically comprises an adjustable damping vibration reduction system, through the adjustable damping vibration reduction system, vibration (namely impact force) can be buffered, the damping can be adjusted according to the requirements of actual working conditions, and the vibration can be attenuated as quickly as possible. In this way, the service life of parts can be prolonged, and the operation comfort of the cutting knife can be 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 cutter, its left and right reciprocating linear operation is mainly achieved through the cutter drive mechanism. The cutter drive 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 operator's comfort. 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 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;

[0008] A magnet assembly is arranged inside the assembly assembly and the electromagnetic assembly is sleeved on the outer circumference 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 linearly; and

[0009] Vibration reduction components, including adjustable damping vibration reduction systems.

[0010] Preferably, the assembly component comprises a shell having a cavity formed therein, and a first end and a second end of the shell in an extending direction are both provided with corresponding end covers.

[0011] Preferably, the assembly component further comprises a connecting shaft disposed in the cavity, wherein the axial direction of the connecting shaft is the same as the extension direction of the shell; the end cap located at the first end in the extension direction of the shell is formed with a through hole corresponding to the connecting shaft, and the first end in the axial direction of the connecting shaft passes through the through hole so as to be connected to the cutting knife;

[0012] A sealing member is also provided at the through hole.

[0013] Preferably, the electromagnetic assembly comprises a plurality of iron cores and windings, the iron cores and windings are both formed into an annular structure, and the electromagnetic assembly is nested in the inner wall of the shell.

[0014] Preferably, along the extension direction of the shell, the iron core and the winding are arranged alternately in sequence;

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

[0016] Preferably, the magnet assembly is sleeved on the outer side of the connecting shaft, and a magnetic gap is formed between the outer side of the magnet assembly and the inner side of the electromagnetic assembly;

[0017] Along the axial direction of the connecting shaft, the magnet assembly includes permanent magnets and magnetic poles that are alternately arranged in sequence.

[0018] Preferably, the adjustable damping vibration reduction system is nested in the inner wall of the shell; and along the extension direction of the shell, two groups of the adjustable damping vibration reduction systems are respectively distributed at both ends of the electromagnetic component; a magnetic isolation plate is arranged between the adjustable damping vibration reduction system and the end of the electromagnetic component.

[0019] Preferably, the adjustable damping vibration reduction system includes a vibration reduction spring, an electromagnetic coil and a magnetorheological elastomer; the vibration reduction spring is nested in the inner wall of the shell; the electromagnetic coil is arranged on the inner wall of the vibration reduction spring; the magnetorheological elastomer is arranged on the inner wall of the electromagnetic coil.

[0020] Preferably, the vibration damping assembly further comprises a vibration damping block which is fitted on one side of the two end covers located in the cavity.

[0021] 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.

[0022] 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, and the electromagnetic field 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 relatively small, so that the vibration excitation can be reduced; in addition, the cutter drive device of the present invention is also provided with a vibration reduction component, which specifically includes an adjustable damping vibration reduction system. Through the adjustable damping vibration reduction system, not only can the vibration (i.e., the impact force) be buffered, but also the damping size can be adjusted according to the needs of the actual working conditions to attenuate the vibration as quickly as possible. In this way, the service life of the components can be improved, and the operating comfort of the cutter can be guaranteed.

[0023] 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

[0024] 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.

[0025] Figure 1 is a cross-sectional view of a cutter driving device according to an embodiment of the present invention;

[0026] Figure 2 is a cross-sectional view of a cutter driving device along the AA direction according to an embodiment of the present invention;

[0027] Figure 3 is a cross-sectional view of a cutter driving device along the BB direction according to an embodiment of the present invention;

[0028] Figure 4 2 is a cross-sectional view of a cutter driving device according to an embodiment of the present invention taken along the CC direction.

[0029] Icons: 11-shell; 12-connecting shaft; 13-seal; 210-winding; 211-core; 310-permanent magnet; 311-magnetic pole; 312-magnetic gap; 410-damping spring; 411-electromagnetic coil; 412-magnetorheological elastomer; 413-damping block; 414-magnetic isolation plate. DETAILED DESCRIPTION

[0030] 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.

[0031] 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.

[0032] 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.

[0033] As used herein, the term "and / or" includes any one of the associated listed items and any combination of any two or more items.

[0034] 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.

[0035] 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.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] According to a first aspect of the present invention, there is provided a cutting knife driving device, such as Figure 1 As shown, the cutter drive device in this embodiment includes an assembly component, an electromagnetic component, a magnet component and a vibration reduction component, and the electromagnetic component, the magnet component and the vibration reduction component are all connected to the assembly component to ensure the integrity of the overall structure of the plate drive device. Hereinafter, the specific connection relationship and position relationship of each component of the above-mentioned components of the cutter drive device according to the present invention will be described in detail.

[0040] like Figures 1 to 4 As shown, the assembly assembly in this embodiment can be connected to the cutter to achieve the technical effect of the drive device driving the cutter to reciprocate. Figure 1As shown, the assembly component includes a shell 11 formed with a cavity, and the first end and the second end of the extension direction of the shell 11 are both provided with corresponding end caps. The shell 11 in this embodiment is formed into a cylindrical structure, but is not limited thereto, for example, it can also be set as a rectangular parallelepiped structure. Further, the assembly component also includes a connecting shaft 12 arranged in the cavity, and the axial direction of the connecting shaft 12 is the same as the extension direction of the shell 11; the end cap located at the first end of the extension direction of the shell 11 is formed with a through hole corresponding to the connecting shaft 12, and the first end of the axial direction of the connecting shaft 12 passes through the through hole so as to be connected to the cutting knife; in addition, a sealing member 13 is also provided at the through hole to prevent dust or debris from entering the shell 11 and affecting the working performance of each component, thereby ensuring the use effect of the following electromagnetic assembly and magnet assembly.

[0041] In this way, the connecting shaft 12 in this embodiment can be extended and retracted through the through hole, that is, the connecting shaft 12 can move linearly, and the controller combined with an appropriate control algorithm can achieve stepless speed regulation of the connecting shaft 12. In addition, under the premise of meeting the strength and reliability of the device, the connecting shaft 12 can be set to a hollow structure to reduce the overall weight of the device.

[0042] In this embodiment, if Figures 1 to 3 As shown, the electromagnetic assembly includes a plurality of iron cores 211 and a plurality of windings 210. The windings 210 are used to generate an electromagnetic field, and the iron 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 iron cores 211 and the windings 210 are both formed into an annular structure. The electromagnetic assembly is nested in the inner wall of the shell 11. It should be noted that the connection method between the electromagnetic assembly and the shell 11 is not fixed. For example, it can be connected to the shell 11 in a stable manner by concave-convex matching or snap-on connection. In this way, when the windings 210 are powered, the electromagnetic assembly can generate a continuous electromagnetic field.

[0043] More specifically, if Figures 1 to 3 As shown, along the axial direction of the shell 11, the iron core 211 and the winding 210 are alternately arranged in sequence, but the arrangement of the iron core 211 and the winding 210 is not limited to this. For example, a groove can also be provided on the outer surface of the iron core 211, and the groove is arranged around the outer side of the iron core 211 along the radial direction of the iron core 211, and the winding 210 is correspondingly wound inside the groove.

[0044] In addition, in this embodiment, Figure 1As shown, the magnet assembly is sleeved on the outer side of the connecting shaft 12 by means of interference fit, that is, the magnet assembly can move linearly synchronously with the connecting shaft 12. Furthermore, a magnetic gap 312 is formed between the outer side of the magnet assembly and the inner side of the above-mentioned electromagnetic assembly, and the magnetic gap 312 can reduce the magnetic resistance to improve the operating efficiency of the device. Along the axial direction of the connecting shaft 12, the magnet assembly includes permanent magnets 310 and magnetic poles 311 arranged alternately in sequence. The magnet assembly can generate a permanent magnetic field that interacts with the electromagnetic field to form a traveling wave for driving the connecting shaft 12 to move linearly back and forth, so that the connecting shaft 12 can achieve the technical effect of driving the cutting knife to move back and forth.

[0045] In this embodiment, if Figure 1 and Figure 4 As shown, the vibration reduction assembly includes an adjustable damping vibration reduction system, which is nested in the inner wall of the shell 11, and along the extension direction of the shell 11, two groups of the adjustable damping vibration reduction systems are respectively distributed at both ends of the electromagnetic assembly. Furthermore, a magnetic isolation plate 414 is also provided between the adjustable damping vibration reduction system and the end of the electromagnetic assembly. Specifically, the adjustable damping vibration reduction system includes a vibration reduction spring 410, an electromagnetic coil 411 and a magnetorheological elastomer 412; the vibration reduction spring 410 is nested in the inner wall of the shell 11 to play a role in buffering vibration; the electromagnetic coil 411 is arranged at the inner wall of the vibration reduction spring 410, and the magnetorheological elastomer 412 is arranged at the inner wall of the electromagnetic coil 411.

[0046] That is to say, the electromagnetic coil 411 is wound around the outer peripheral side of the magnetorheological elastomer 412 so that the electromagnetic coil 411 can provide a variable magnetic field for the magnetorheological elastomer 412. That is, the current of the electromagnetic coil 411 can be adjusted according to the needs of the actual working conditions (for example, the real-time required current can be calculated by the controller) to change the magnetic field strength acting on the magnetorheological elastomer 412, thereby changing the damping characteristics of the magnetorheological elastomer 412 to quickly attenuate vibrations.

[0047] It should be noted that the damping spring 410 and the magnetorheological elastomer 412 in this embodiment are arranged in parallel, or they can be arranged in series, as long as the above-mentioned technical effect can be achieved.

[0048] In addition, the vibration reduction assembly also includes a vibration reduction block 413 which is fitted on one side of the two end covers in the cavity, so as to further reduce the vibration generated during the operation of the device, thereby effectively ensuring the service life of each component and the operating comfort of the driver.

[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 linear motion. The excitation force generated by this driving mode is relatively small, so that vibration excitation can be reduced; in addition, the cutter drive device of the present invention is also provided with a vibration reduction component, which specifically includes an adjustable damping vibration reduction system, through which not only the vibration (i.e., impact force) can be buffered, but also the damping size can be adjusted according to the needs of the actual working conditions to attenuate the vibration as quickly as possible. In this way, the service life of the components can be improved, and the operating comfort of the cutter can be 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 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; A magnet assembly is arranged inside the assembly assembly and the electromagnetic assembly is sleeved on the outer circumference 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 linearly; and Vibration reduction components, including adjustable damping vibration reduction systems.

2. The cutting knife driving device according to claim 1, characterized in that: The assembly component comprises a shell body with a cavity formed therein, and a first end and a second end of the shell body in an extending direction are both provided with corresponding end covers.

3. The cutting knife driving device according to claim 2, characterized in that: The assembly assembly further includes a connecting shaft disposed in the cavity, wherein the axial direction of the connecting shaft is the same as the extension direction of the shell; the end cap located at the first end in the extension direction of the shell is formed with a through hole corresponding to the connecting shaft, and the first end in the axial direction of the connecting shaft passes through the through hole so as to be connected to the cutting knife; A sealing member is also provided at the through hole.

4. The cutting knife driving device according to claim 3, characterized in that: The electromagnetic assembly includes a plurality of iron cores and windings, the iron cores and windings are both formed into an annular structure, and the electromagnetic assembly is nested at the inner wall of the shell.

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

6. The cutting knife driving device according to claim 5, characterized in that: The magnet assembly is sleeved on the outer side of the connecting shaft, and a magnetic gap is formed between the outer side of the magnet assembly and the inner side of the electromagnetic assembly; Along the axial direction of the connecting shaft, the magnet assembly includes permanent magnets and magnetic poles that are alternately arranged in sequence.

7. The cutting knife driving device according to claim 3, characterized in that: The adjustable damping vibration reduction system is nested in the inner wall of the shell; and along the extension direction of the shell, two groups of the adjustable damping vibration reduction systems are respectively distributed at both ends of the electromagnetic component; a magnetic isolation plate is arranged between the adjustable damping vibration reduction system and the end of the electromagnetic component.

8. The cutting knife driving device according to claim 7, characterized in that: The adjustable damping vibration reduction system includes a vibration reduction spring, an electromagnetic coil and a magnetorheological elastomer; the vibration reduction spring is nested on the inner wall of the shell; the electromagnetic coil is arranged on the inner wall of the vibration reduction spring; and the magnetorheological elastomer is arranged on the inner wall of the electromagnetic coil.

9. The cutting knife driving device according to claim 8, characterized in that: The vibration reduction assembly also includes a vibration reduction block which is fitted on one side of the two end covers located in the cavity.

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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