Automatic adjusting mechanism for gap between concave plates of double-longitudinal-axial-flow combine harvester

Abstract

The utility model discloses an automatic concave plate gap adjusting mechanism of a double-longitudinal-axial-flow combine harvester, which comprises a double-axial-flow concave plate, an adjusting rod, a rotating shaft, an adjusting handle, an adjusting oil cylinder and a connecting handle, the double-axial-flow concave plate is positioned right below a threshing cylinder, the adjusting rod penetrates through the double-axial-flow concave plate and is fixedly connected with the double-axial-flow concave plate, and the rotating shaft is fixedly connected with the double-axial-flow concave plate. The rotating shaft is arranged below the double-axial-flow concave plate, the two ends of the rotating shaft are rotationally connected with the machine body, one end of the adjusting rod is connected with the rotating shaft through an adjusting handle, the rotating shaft is sleeved with the adjusting handle, one end of the adjusting handle is connected with the telescopic end of the adjusting oil cylinder, and the fixed end of the adjusting oil cylinder is connected with the support. According to the concave plate gap automatic adjusting mechanism of the double-longitudinal-axial-flow combine harvester, a driver can conveniently and rapidly adjust the gap between the double-axial-flow concave plate and the threshing cylinder, time and labor are saved, and the harvesting efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of harvesters, in particular to an automatic adjustment mechanism for the gap between concave plates of a double longitudinal axial flow combine harvester. Background Art

[0002] The concave plate gap is one of the important setting parameters of the combine harvester to ensure grain breakage and entrainment loss. It is closely related to crop threshing and separation. If the concave plate gap is too small during the harvesting process, the grain breakage rate will increase, and it will also easily cause blockage between the threshing drum and the concave plate gap, affecting the normal operation of the combine harvester; if the concave plate gap is too large, it will be difficult to thresh the grains from the plant ears, resulting in an increase in the impurity rate.

[0003] Most of the traditional double longitudinal axial flow combine harvesters use manual adjustment for the concave plate gap adjustment mechanism. This adjustment method requires the vehicle to be stopped before each adjustment, and then the adjustment handle or screw is manually adjusted to achieve the purpose of adjusting the concave plate gap. Although this adjustment method is simple and easy, the operation process is time-consuming and labor-intensive, especially in hot summer and cold winter, and it is also very inconvenient for the operator. Summary of the invention

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide an automatic adjustment mechanism for the gap between the concave plates of a double longitudinal axial flow combine harvester, which is convenient for the driver to quickly adjust the gap between the double axial flow concave plates and the threshing drum, saving time and effort, and can effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an automatic adjustment mechanism for the gap of concave plates of a double longitudinal axial flow combine harvester, comprising a double axial flow concave plate, wherein the double axial flow concave plate is located directly below a threshing drum, and further comprising an adjusting rod, a rotating shaft, an adjusting handle, an adjusting oil cylinder and a connecting handle, wherein the adjusting rod passes through the double axial flow concave plate and is fixedly connected thereto, the rotating shaft is arranged below the double axial flow concave plate, and both ends of the rotating shaft are rotatably connected to a machine body, one end of the adjusting rod is connected to the rotating shaft through an adjusting handle, the adjusting handle is sleeved on the rotating shaft and one end of the adjusting handle is connected to the telescopic end of the adjusting oil cylinder, the fixed end of the adjusting oil cylinder is connected to a bracket, the bracket is fixed to a side wall of the machine body, and the other end of the adjusting rod is connected to the rotating shaft through a connecting handle.

[0006] As a preferred technical solution of the utility model, the number of the adjusting rods is two, and the two adjusting rods are respectively arranged at the end and near the middle of the double axial flow concave plate.

[0007] As a preferred technical solution of the utility model, an angle sensor is provided on the adjustment handle, and an output end of the angle sensor is electrically connected to a control system of the cab.

[0008] Compared with the prior art, the beneficial effects of the utility model are as follows: the automatic adjustment mechanism of the concave plate gap of the double longitudinal axial flow combine harvester is reasonably designed and easy to operate. An adjustment rod is set to pass through the entire double axial flow concave plate, and the rotating shaft is located on the side wall of the vehicle as an adjustment fulcrum. The rotating shaft and the adjustment rod are connected by an adjustment handle and a connecting handle to form a bracket. Under the action of the adjustment cylinder, the double axial flow concave plate is lifted up as a whole according to the lever theorem, and then the gap between the double axial flow concave plate and the threshing drum is adjusted, thereby reducing the labor intensity of the operator and improving the harvesting efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is the front view of the utility model;

[0010] Figure 2 It is a bottom view of the utility model.

[0011] In the figure: 1 adjusting cylinder, 2 adjusting handle, 3 connecting handle, 4 rotating shaft, 5 adjusting rod, 6 double axial flow concave plate, 7 angle sensor, 8 bracket. DETAILED DESCRIPTION

[0012] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0013] See also Figure 1-2 The utility model provides a technical solution: an automatic adjustment mechanism for the gap between concave plates of a double longitudinal axial flow combine harvester, comprising a double axial flow concave plate 6, the double axial flow concave plate 6 being located directly below the threshing drum, and also comprising an adjustment rod 5, a rotating shaft 4, an adjustment handle 2, an adjustment cylinder 1 and a connecting handle 3, the adjustment rod 5 passes through the double axial flow concave plate 6 and is fixedly connected thereto, the rotating shaft 4 is a through shaft located on the side wall of the vehicle, and is located below the double axial flow concave plate 6, and both ends of the rotating shaft 4 are rotatably connected to the machine body, serving as a fulcrum for adjusting the double axial flow concave plate 6;

[0014] One end of the adjusting rod 5 is connected to the rotating shaft 4 through the adjusting handle 2, the adjusting handle 2 is sleeved on the rotating shaft 4 and one end of the adjusting handle 2 is hinged to the telescopic end of the adjusting cylinder 1, the fixed end of the adjusting cylinder 1 is connected to the bracket 8, the bracket 8 is fixed on the side wall of the machine body, and the other end of the adjusting rod 5 is connected to the rotating shaft 4 through the connecting handle 3. The extension of the piston rod of the adjusting cylinder 1 drives the adjusting handle 2 to rotate around the rotating shaft 4, thereby controlling the gap between the double axial flow concave plate 6 and the drum.

[0015] In order to improve the stability of lifting the double axial flow concave plate 6, two sets of the adjustment mechanism are arranged at the end and near the middle of the double axial flow concave plate 6.

[0016] In order to facilitate the operator's control, an angle sensor 7 is provided on the adjustment handle 2. The output end of the angle sensor 7 is electrically connected to the input end of the control system of the cab. The output end of the control system of the cab is connected to the input end of the adjustment cylinder 1. The control system converts the rotation angle of the adjustment handle 2 into the up and down movement of the dual-axial flow concave plate 6, thereby facilitating the operator to observe the gap between the dual-axial flow concave plate 6 and the threshing drum.

[0017] During use: When starting to adjust, the operator presses the button of the control system in the cab to start supplying oil to the adjusting cylinder 1, and the piston rod of the adjusting cylinder 1 extends or contracts, thereby driving the adjusting handle 2 to guide the adjusting rod 5 to move upward or downward with the rotating shaft 4 as the fulcrum, thereby driving the double axial flow concave plate 6 to move up and down, and according to the value transmitted by the angle sensor 7, observe the gap between the double axial flow concave plate 6 and the separation roller, and remind the operator to complete the operation.

[0018] The utility model can be conveniently operated, occupies little space when in use, is easy to operate and use; can effectively reduce the concave plate gap adjustment time, thereby improving the work efficiency of the harvester, while reducing the labor intensity of operators and improving convenience of use.

[0019] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A double longitudinal axial flow combine harvester concave plate gap automatic adjustment mechanism, comprising a double axial flow concave plate (6), wherein the double axial flow concave plate (6) is located directly below the threshing drum, and is characterized in that: The machine body also comprises an adjusting rod (5), a rotating shaft (4), an adjusting handle (2), an adjusting oil cylinder (1) and a connecting handle (3); the adjusting rod (5) passes through the double axial flow concave plate (6) and is fixedly connected thereto; the rotating shaft (4) is arranged below the double axial flow concave plate (6), and both ends of the rotating shaft (4) are rotatably connected to the machine body; one end of the adjusting rod (5) is connected to the rotating shaft (4) through the adjusting handle (2); the adjusting handle (2) is sleeved on the rotating shaft (4) and one end of the adjusting handle (2) is connected to the telescopic end of the adjusting oil cylinder (1); the fixed end of the adjusting oil cylinder (1) is connected to a bracket (8), and the bracket (8) is fixed on the side wall of the machine body; the other end of the adjusting rod (5) is connected to the rotating shaft (4) through the connecting handle (3).

2. The automatic adjustment mechanism for the concave plate gap of a double longitudinal axial flow combine harvester according to claim 1, characterized in that: The number of the adjusting rods (5) is two, and the two adjusting rods (5) are respectively arranged at the end and near the middle of the double axial flow concave plate (6).

3. The automatic adjustment mechanism for the concave plate gap of a double longitudinal axial flow combine harvester according to claim 1, characterized in that: The adjustment handle (2) is provided with an angle sensor (7), and the output end of the angle sensor (7) is electrically connected to the control system of the cab.

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