Integrated knife rest and corn header

Abstract

The utility model provides an integrated knife rest and a corn header, which relates to the technical field of agricultural production devices, and comprises a rotating shaft, a hoop body, a fixed bearing, a lower cutterhead and an upper cutterhead, a connecting hole is formed in the center position of the hoop body, the rotating shaft penetrates through the connecting hole and drives the hoop body to rotate, a fixed bearing is fixedly connected to the top end of the hoop body and is cylindrical, and a lower cutter head and an upper cutter head are sequentially welded to the peripheral surface of the fixed bearing and are arranged in parallel. According to the integrated knife rest and the corn header, the technical problem that in the prior art, an upper layer and a lower layer are split clamping plates, so that a blade between the two layers of clamping plates longitudinally displaces and shakes is solved. And the technical effect of uniformly cutting the corn straws is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural production devices, in particular to an integrated knife rack and a corn cutting platform. Background Art

[0002] With the development of science and technology and modern agricultural technology, automated harvesting of crops has basically replaced manual harvesting. Corn harvester is a kind of agricultural machinery specially used for harvesting corn crops. It can complete a series of operations such as picking, threshing, separating and collecting corn. The picking and cutting table on the corn harvester is a key component. It is responsible for picking the mature corn ears and performing preliminary processing, laying the foundation for the subsequent threshing and separation work.

[0003] The bottom of the ear-picking header needs to be equipped with a cutter to cut the root of the corn stalk. In the existing technology, the upper and lower plywood of the knife holder for fixing the cutter are manufactured separately and independently, and the two plywood layers are respectively connected to the output shaft for synchronous rotation; but because they are not integrated, the distance between the two plywood layers cannot be guaranteed, which affects the coaxiality, causing the swinging blades between the two plywood layers to be longitudinally displaced or misaligned, resulting in uneven cutting of the corn stalks, affecting the neatness of the corn stalks after cutting. In addition, in actual work, when the knife holder is damaged, the plywood needs to be removed one by one, which will increase the time cost during disassembly and installation. Utility Model Content

[0004] The utility model aims to provide an integrated knife holder and corn cutting table to alleviate the technical problem in the prior art that the upper and lower layers are split plywood, which causes the blade between the two layers of plywood to vibrate longitudinally and causes uneven cutting of corn stalks.

[0005] The utility model provides an integrated tool holder, comprising: a rotating shaft, a hoop body, a fixed bearing, a lower tool disc and an upper tool disc;

[0006] A connecting hole is opened at the center of the hoop body, and the rotating shaft passes through the connecting hole and drives the hoop body to rotate. A fixed bearing is fixedly connected to the top of the hoop body. The fixed bearing is cylindrical, and the lower cutter disc and the upper cutter disc are welded on the outer peripheral surface of the fixed bearing in sequence. The lower cutter disc and the upper cutter disc are arranged in parallel.

[0007] Furthermore, an involute spline groove is provided on the inner surface of the connection hole at the center of the hoop body, and the rotating shaft is cooperatively connected with the involute spline groove.

[0008] Furthermore, the lower cutter disc and the upper cutter disc are in the shape of elliptical discs, and two groups of blades are fixedly connected between the lower cutter disc and the upper cutter disc, and the two groups of blades are respectively arranged on both sides of the hoop body.

[0009] Furthermore, first bolt holes are respectively provided on the surfaces of the lower cutter disc and the upper cutter disc, and the blade is clamped between the lower cutter disc and the upper cutter disc through bolts on the first bolt holes and is 180° under the action of rotating centrifugal force.

[0010] Furthermore, the lower cutter disc and the upper cutter disc are in a herringbone shape, and three groups of blades are fixedly connected between the lower cutter disc and the upper cutter disc.

[0011] Furthermore, second bolt holes are respectively provided on the surfaces of the lower cutter disc and the upper cutter disc, and the blade is clamped between the lower cutter disc and the upper cutter disc through the bolts on the second bolt holes and is at 120° under the action of the rotating centrifugal force.

[0012] Furthermore, the blade is in the shape of an elongated strip.

[0013] Furthermore, the blade is coated with an anti-wear layer.

[0014] Furthermore, one end of the rotating shaft away from the hoop body is transmission-connected to a transmission box.

[0015] The utility model also provides a corn cutting platform, comprising the above-mentioned integrated knife holder.

[0016] Beneficial effects:

[0017] The utility model provides an integrated tool holder and corn cutting platform, wherein a connecting hole is opened at the center of a hoop body, a rotating shaft passes through the connecting hole and drives the hoop body to rotate, and the output rotating shaft of the transmission box is directly connected to the hoop body to realize the transmission of torque;

[0018] A fixed bearing is fixedly connected to the top of the hoop body. The fixed bearing is cylindrical. The lower cutter disc and the upper cutter disc are welded to the outer peripheral surface of the fixed bearing in sequence. The lower cutter disc and the upper cutter disc are arranged in parallel. The existence of the fixed bearing welds the hoop body, the lower cutter disc and the upper cutter disc into an integrated structure. The spacing between the cutter discs is measured in advance, and the lower cutter disc and the upper cutter disc are radially and axially positioned and welded to the hoop. This not only controls the symmetry of the single piece, but also ensures the coaxiality, thereby effectively controlling the allowable unbalance of the tool holder, preventing the blade from longitudinal displacement and shaking, and uneven cutting of corn stalks.

[0019] The integrated tool holder provided by the utility model has the advantages of simple overall structure manufacturing, convenient disassembly and installation, and high reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 The structural schematic diagram of the integrated tool rest provided by the embodiment of the present utility model;

[0022] Figure 2 The sectional view of the integrated tool rest provided by the embodiment of the present utility model;

[0023] Figure 3 The bottom view of the integrated tool rest provided by the embodiment of the present utility model;

[0024] Figure 4 The top view of the one with a blade provided by an embodiment of the present utility model;

[0025] Figure 5 The top view of the one with a blade provided by another embodiment of the present utility model.

[0026] Icon: 100 - rotating shaft; 200 - hoop body; 201 - involute spline groove; 300 - fixed bearing; 400 - lower tool disc; 500 - upper tool disc; 600 - blade; 700 - first bolt hole; 800 - second bolt hole. Specific embodiments

[0027] 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. Apparently, the described embodiments are some but not all of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0028] 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 claimed present utility model, 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 protection scope of the present utility model.

[0029] 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.

[0030] 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 to 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.

[0031] In addition, terms such as "horizontal", "vertical", "hanging", etc. do not mean that the components are 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.

[0032] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "connected" 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 can be the communication inside two components. 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 situations.

[0033] 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.

[0034] As Figure 1 、 Figure 2 shown, this embodiment provides an integrated tool rest, including: a rotating shaft 100, a hoop body 200, a fixed bearing 300, a lower tool disk 400, and an upper tool disk 500;

[0035] A connection hole is provided at the central position of the hoop body 200, and an involute spline groove 201 is provided on the inner surface of the connection hole at the central position of the hoop body 200. An external spline is provided at the shaft end of the rotating shaft 100 and is connected in cooperation with the involute spline groove 201. Thus, the rotating shaft 100 passes through the connection hole and drives the hoop body 200 to rotate.

[0036] The clamp body 200, as a component connected to the rotating shaft 100, follows the rotation of the rotating shaft 100 to drive the entire tool holder to rotate, thereby realizing the transmission of torque and cutting corn stalks. Axial positioning and spline side clearance control can be achieved through clamping, and the lateral clearance between the splines can be controlled to reduce transmission instability or noise problems caused by excessive clearance.

[0037] A fixed bearing 300 is fixedly connected to the top of the hoop body 200. The fixed bearing 300 is cylindrical as a supporting point. A lower cutter disc 400 and an upper cutter disc 500 are welded to the outer surface of the fixed bearing 300 in sequence. The lower cutter disc 400 and the upper cutter disc 500 are arranged in parallel. The lower cutter disc 400 and the upper cutter disc are directly set with a good spacing, which helps to ensure the coaxiality between the cutter discs and ensure that the cutting surface is kept flat and consistent when cutting corn stalks.

[0038] like Figure 3 As shown, the integrated tool holder of the utility model welds the hoop body 200, the lower blade disc 400 and the upper blade disc 500 into an integrated structure. The lower blade disc 400 and the upper blade disc 500 are radially and axially positioned and welded to the hoop body 200, which not only controls the symmetry of the single piece, but also ensures the coaxiality, thereby effectively controlling the allowable unbalance of the tool holder and preventing the blade 600 from longitudinal displacement and shaking, resulting in uneven cutting of corn stalks.

[0039] In addition, when replacement is needed, the hoop body 200 can be directly separated from the rotating shaft 100, which is convenient and quick, and reduces time cost.

[0040] like Figure 4 As shown, as an embodiment of a blade, the lower blade disc 400 and the upper blade disc 500 are in the shape of an elliptical disc. The elliptical shape of the blade disc can make the blade 600 contact the corn stalk more evenly during rotation. Two groups of blades 600 are fixedly connected between the lower blade disc 400 and the upper blade disc 500. The two groups of blades 600 are respectively arranged on both sides of the hoop body 200. The symmetrical arrangement of the blades 600 helps to maintain the balance of the blade holder during rotation.

[0041] The lower blade disc 400 and the upper blade disc 500 are respectively provided with first bolt holes 700. The blade 600 is clamped between the lower blade disc 400 and the upper blade disc 500 by bolts on the first bolt holes 700, and is 180° under the action of the rotating centrifugal force. During the rotation of the blade holder, the centrifugal force causes the blade 600 to expand outward to form a cutting angle of 180°, which can maximize the cutting range of the blade.

[0042] like Figure 5 As shown, as an embodiment of a blade, the lower blade disc 400 and the upper blade disc 500 are in a herringbone shape, and three sets of blades 600 are fixedly connected between the lower blade disc 400 and the upper blade disc 500. The herringbone-shaped lower blade disc 400 and the upper blade disc 500 and the increase in the number of blades 600 can improve cutting efficiency.

[0043] The lower cutter head 400 and the upper cutter head 500 are respectively provided with second bolt holes 800 on their surfaces. The blade 600 is clamped between the lower cutter head 400 and the upper cutter head 500 by bolts through the second bolt holes 800 and is at 120° under the action of rotational centrifugal force. This layout helps to reduce the mutual interference between the three groups of blades 600.

[0044] In the embodiment of the present utility model, the blade 600 is strip-shaped. The blade 600 is coated with an anti-wear layer.

[0045] The strip-shaped blade 600 can cover a wider area when rotating, enabling the harvester to cut more straws at one time when passing through crops. In addition, the blade 600 is also coated with an anti-wear layer, which can improve the wear resistance of the blade 600, extend the service life of the blade, and reduce the maintenance cost.

[0046] One end of the rotating shaft 100 far from the hoop body 200 is drivingly connected with a transmission box, enabling the tool rest to rotate stably and cut straws.

[0047] The present utility model also provides a corn cutter platform, including the above-mentioned integral tool rest.

[0048] Based on the above embodiments, the working process of the integral tool rest provided by the embodiment of the present utility model is as follows:

[0049] First, a connection hole is provided at the central position of the hoop body 200, and an involute spline groove 201 is provided on the inner surface. The rotating shaft 100 passes through the connection hole and is in fit connection with the involute spline groove 201 to achieve accurate axial positioning.

[0050] A fixed bearing 300 is fixedly connected to the top end of the hoop body 200. The bearing is cylindrical, and the lower cutter head 400 and the upper cutter head 500 are sequentially welded to the outer peripheral surface thereof. These two cutter heads are arranged in parallel to ensure coaxiality. The blade 600 is fixed by bolts through the bolt holes (the first bolt hole 700 or the second bolt hole 800) on the surfaces of the lower cutter head 400 and the upper cutter head 500 and unfolds under the action of centrifugal force as required.

[0051] During the working process, the rotating shaft 100 is driven by the transmission box to drive the hoop body 200 and the lower cutter head 400 and the upper cutter head 500 welded thereto to rotate. The blade 600 unfolds for cutting under the action of rotational centrifugal force, enabling the blade to cut the corn straws evenly, maximizing the cutting range, and improving the harvesting efficiency. When the live blade needs to be replaced due to wear, the hoop body 200 can be directly separated from the rotating shaft 100, which is convenient and fast and reduces the time cost.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An integrated tool holder, characterized in that: include: A rotating shaft (100), a hoop body (200), a fixed bearing (300), a lower cutter disc (400) and an upper cutter disc (500); A connecting hole is provided at the center of the hoop body (200), the rotating shaft (100) passes through the connecting hole and drives the hoop body (200) to rotate, the fixed bearing (300) is fixedly connected to the top of the hoop body (200), the fixed bearing (300) is cylindrical, and the lower cutter disc (400) and the upper cutter disc (500) are welded to the outer peripheral surface of the fixed bearing (300) in sequence, and the lower cutter disc (400) and the upper cutter disc (500) are arranged in parallel.

2. The integrated tool holder according to claim 1, characterized in that: An involute spline groove (201) is provided on the inner surface of a connection hole at the center of the hoop body (200), and the rotating shaft (100) is cooperatively connected to the involute spline groove (201).

3. The integrated tool holder according to claim 1, characterized in that: The lower cutter disc (400) and the upper cutter disc (500) are in the shape of elliptical discs. Two groups of blades (600) are fixedly connected between the lower cutter disc (400) and the upper cutter disc (500). The two groups of blades (600) are respectively arranged on both sides of the hoop body (200).

4. The integrated tool holder according to claim 3, characterized in that: The surfaces of the lower cutter disc (400) and the upper cutter disc (500) are respectively provided with first bolt holes (700); the blade (600) is clamped between the lower cutter disc (400) and the upper cutter disc (500) by bolts on the first bolt holes (700) and is rotated at 180 degrees under the action of the centrifugal force.

5. The integrated tool holder according to claim 1, characterized in that: The lower cutter disc (400) and the upper cutter disc (500) are in a herringbone shape, and three groups of blades (600) are fixedly connected between the lower cutter disc (400) and the upper cutter disc (500).

6. The integrated tool holder according to claim 5, characterized in that: The surfaces of the lower cutter disc (400) and the upper cutter disc (500) are respectively provided with second bolt holes (800); the blade (600) is clamped between the lower cutter disc (400) and the upper cutter disc (500) by bolts on the second bolt holes (800) and is rotated at 120° under the action of the centrifugal force.

7. The integrated tool holder according to any one of claims 3 to 6, characterized in that: The blade (600) is in the shape of an elongated strip.

8. The integrated tool holder according to claim 7, characterized in that: The blade (600) is coated with an anti-wear layer.

9. The integrated tool holder according to claim 1, characterized in that: One end of the rotating shaft (100) away from the hoop body (200) is transmission-connected to a transmission box.

10. A corn cutting platform, characterized in that: It comprises the integrated tool holder as claimed in any one of claims 1 to 9.

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