Straw walker structure of harvester

Abstract

The utility model provides a harvester straw walker structure which comprises a straw walker body, a connecting shaft arm used for being matched with a crank is arranged at the bottom of the straw walker body, an auxiliary separating mechanism is arranged above the straw walker body and comprises a plurality of driving shafts, linkage wheels are arranged on the driving shafts, linkage rods are arranged on the linkage wheels, and the linkage rods are connected with the connecting shaft arm. The straw walker has the advantages that the separating capacity of the straw walker is improved, the straw walker main body is driven to move through transmission of the crankshaft, and the straw walker main body and the adjacent straw walker main body shake up and down so as to achieve shaking throwing of crops. And meanwhile, transmission of the driving shaft drives the nylon elastic teeth to perform reciprocating stirring, so that the stalks are stirred, the separation effect is improved, and the problem of key surface blockage is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of agricultural machinery, and particularly relates to a structure of a straw walker of a harvester. Background Art

[0002] On a combine harvester and a compound thresher, a separating device is generally installed. The function of the separating device is to separate the grains and broken ears carried by the straw discharged from the threshing device from the straw, and send the straw to the rear of the machine. The commonly used separating devices on threshers and combine harvesters are of two types: key type and platform type. In addition, separating wheel type and rotary drum type are also adopted. A well-structured separating device requires that its separating loss (the loss of grains carried away in the straw) should be within the range of 0.5-1.0% of the total weight of the threshed grains.

[0003] At present, the key-type straw walker is the most widely used separating device in combine harvesters. Its characteristic is that it has a strong ability to loosen the discharged materials. However, when the feeding amount increases or affected by the humidity of the crops, the stems are not easy to loosen, and there is a problem of unsmooth separation.

[0004] Therefore, in view of the deficiencies of the above solutions in actual production and implementation, they are corrected and improved. At the same time, in the spirit of pursuing excellence and with the assistance of professional knowledge and experience, and after various ingenious ideas and tests, the present utility model is created. A structure of a straw walker of a harvester is provided to solve the above problems. Content of the Utility Model

[0005] The utility model provides a structure of a straw walker of a harvester, which solves the problems in the prior art.

[0006] The technical solution of the utility model is realized as follows: A structure of a straw walker of a harvester includes: a straw walker main body, a connecting shaft arm for cooperating with a crank is arranged at the bottom of the straw walker main body, and an auxiliary separation mechanism is arranged above the straw walker main body.

[0007] As a preferred embodiment of the structure of a straw walker of a harvester, two cranks with equal radii are arranged at the bottom of the straw walker main body, and one of the cranks is a driving shaft, and one end is cooperatively connected with a driving device.

[0008] As a preferred embodiment of the structure of a straw walker of a harvester, a plurality of steps are arranged on the key surface of the straw walker main body, and there is a drop between each step.

[0009] By adopting the above scheme, the crankshaft drives to drive the movement of the straw walker main body. Among them, the straw walker main body and the adjacent straw walker main bodies shake up and down to realize the shaking and throwing of the crops, and the small discharged materials such as grains and broken ears will leak out from the key holes.

[0010] As a preferred embodiment of the structure of the straw walker of a harvester, the auxiliary separation mechanism includes a plurality of drive shafts, on which linkage wheels are arranged, on which linkage rods are arranged, and on which a plurality of nylon spring teeth are arranged.

[0011] As a preferred embodiment of the structure of the straw walker of a harvester, any one of the plurality of drive shafts is a driving shaft, and one end is connected to a driver in a matching manner.

[0012] As a preferred embodiment of the structure of the straw walker of a harvester, an eccentric shaft is arranged on the linkage wheel, a first shaft hole is arranged on the linkage rod corresponding to the eccentric shaft, the eccentric shaft is fitted in the first shaft hole, a positioning rod is arranged on the linkage rod, and the nylon spring teeth are fixed on the linkage rod.

[0013] As a preferred embodiment of the structure of the straw walker of a harvester, a second shaft hole is arranged on the nylon spring tooth corresponding to the linkage rod, a notch is arranged on the second shaft hole, an extension plate is arranged at the notch, a bolt assembly is arranged on the extension plate, and the nylon spring tooth is fixed on the linkage rod through the bolt assembly.

[0014] As a preferred embodiment of the structure of the straw walker of a harvester, the bolt assembly includes a bolt and a nut in threaded fit.

[0015] Adopting the above scheme, the drive shaft drives to drive the nylon spring teeth to reciprocally stir, so as to realize stirring the stalks, improving the separation effect, and avoiding the problem of key surface blockage.

[0016] After adopting the above technical scheme, the beneficial effect of the present utility model is: this structure has the ability to improve the separation ability of the straw walker, the transmission of the crankshaft drives the main body of the straw walker to move, wherein the main body of the straw walker and the adjacent main body of the straw walker vibrate up and down to realize the vibratory throwing of the stalks. At the same time, the transmission of the drive shaft drives the nylon spring teeth to reciprocally stir, so as to realize stirring the stalks, improving the separation effect, and avoiding the problem of key surface blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative labor.

[0018] Figure 1 It is a schematic diagram of the structure of the straw walker of the present utility model;

[0019] Figure 2 It is a bottom view of the structure of the straw walker of the present utility model;

[0020] Figure 3 This is a schematic structural diagram of the motion state of the auxiliary separation mechanism of the present utility model;

[0021] Figure 4 This is an exploded view of the cooperation relationship between the linkage wheel and the linkage rod of the present utility model;

[0022] Figure 5 This is a schematic structural diagram of the nylon spring teeth of the present utility model;

[0023] In the figure, 1 - threshing cylinder main body; 2 - coupling arm; 3 - drive shaft; 4 - linkage wheel; 5 - linkage rod; 6 - nylon spring teeth; 7 - eccentric shaft; 8 - first shaft hole; 9 - positioning rod; 10 - second shaft hole; 11 - extension plate; 12 - bolt assembly. Specific embodiments

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0025] As Figures 1-5 shown, a threshing cylinder structure of a harvester includes: a threshing cylinder main body 1, a coupling arm 2 for cooperating with a crank is arranged at the bottom of the threshing cylinder main body 1, and an auxiliary separation mechanism is arranged above the threshing cylinder main body 1.

[0026] Among them, two cranks with equal radii are arranged at the bottom of the threshing cylinder main body 1, and one of the cranks is a driving shaft, and one end is cooperatively connected to a driving device.

[0027] Among them, a plurality of steps are arranged on the key surface of the threshing cylinder main body 1, and there is a drop between each step.

[0028] Among them, the auxiliary separation mechanism includes a plurality of drive shafts 3, a linkage wheel 4 is arranged on the drive shaft 3, a linkage rod 5 is arranged on the linkage wheel 4, and a plurality of nylon spring teeth 6 are arranged on the linkage rod 5.

[0029] Among them, any one of the plurality of drive shafts 3 is a driving shaft, and one end is cooperatively connected to a driver.

[0030] Among them, an eccentric shaft 7 is arranged on the linkage wheel 4, a first shaft hole 8 is arranged on the linkage rod 5 corresponding to the eccentric shaft 7, the eccentric shaft 7 is fitted in the first shaft hole 8, a positioning rod 9 is arranged on the linkage rod 5, and the nylon spring teeth 6 are fixed on the linkage rod 5.

[0031] Among them, the nylon elastic tooth 6 is provided with a second shaft hole 10 corresponding to the linkage rod 5. A notch is provided on the second shaft hole 10, an extension plate 11 is provided at the notch, and a bolt assembly 12 is provided on the extension plate 11. The nylon elastic tooth 6 is fixed to the linkage rod 5 through the bolt assembly 12.

[0032] Among them, the bolt assembly 12 includes a bolt and a nut in threaded fit.

[0033] Working principle: The transmission of the crankshaft drives the threshing machine main body 1 to move. Among them, the threshing machine main body 1 and the adjacent threshing machine main bodies 1 vibrate up and down to realize the throwing of crop stalks. Each time the crop stalks are thrown, small threshed materials such as grains and broken ears will leak out from the keyhole. At the same time, the transmission of the drive shaft drives the nylon elastic teeth to reciprocally move, so as to realize the picking of the stalks, improve the separation effect, and avoid the problem of key surface blockage.

[0034] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention 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 should not be construed as a limitation to the present invention. In the description of the present invention, unless otherwise specified and limited, it should be noted that the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be the communication inside two elements. It can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific situations.

[0035] The above is only the preferred embodiment of the present invention, and it is not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A structure of a straw walker for a harvester, characterized in that Including: A straw walker main body (1), a coupling arm (2) for cooperating with a crank is arranged at the bottom of the straw walker main body (1), and an auxiliary separation mechanism is arranged above the straw walker main body (1).

2. The structure of a straw walker of a harvester according to claim 1, characterized in that, Two cranks with equal radii are arranged at the bottom of the straw walker main body (1), and one of the cranks is a driving shaft, and one end is cooperatively connected to a driving device.

3. The structure of a threshing machine's straw walker according to claim 1, characterized in that, A plurality of steps are arranged on the key surface of the straw walker main body (1), and there is a drop between each step.

4. A threshing machine straw walker structure according to claim 1, characterized in that, The auxiliary separation mechanism includes a plurality of driving shafts (3), a linkage wheel (4) is arranged on the driving shaft (3), a linkage rod (5) is arranged on the linkage wheel (4), and a plurality of nylon spring teeth (6) are arranged on the linkage rod (5).

5. The structure of a threshing machine's straw walker according to claim 4, characterized in that, Any one of the plurality of driving shafts (3) is a driving shaft, and one end is cooperatively connected to a driver.

6. The structure of a threshing machine straw walker according to claim 4, characterized in that, An eccentric shaft (7) is arranged on the linkage wheel (4), a first shaft hole (8) is arranged on the linkage rod (5) corresponding to the eccentric shaft (7), the eccentric shaft (7) is fitted in the first shaft hole (8), a positioning rod (9) is arranged on the linkage rod (5), and the nylon spring teeth (6) are fixed on the linkage rod (5).

7. The structure of a threshing machine straw walker according to claim 6, characterized in that, The nylon spring teeth (6) are provided with a second shaft hole (10) corresponding to the linkage rod (5), a notch is arranged on the second shaft hole (10), an extension plate (11) is arranged at the notch, and a bolt assembly (12) is arranged on the extension plate (11), and the nylon spring teeth (6) are fixed on the linkage rod (5) through the bolt assembly (12).

8. A threshing machine straw walker structure according to claim 7, characterized in that, The bolt assembly (12) includes a bolt and a nut in threaded fit.

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