Threshing device with two-way pull wires and adjustable threshing clearance and combined harvester

Patent metadata

Field	Value
Publication number	US-11330764-B2
Application number	US-201916626908-A
Country	US
Kind code	B2
Filing date	Mar 26, 2019
Priority date	Mar 18, 2019
Publication date	May 17, 2022
Grant date	May 17, 2022

Abstract

A threshing device with two-way pull wires and adjustable threshing clearance includes a tensioning mechanism, and several grid bars in clearance fit with side plates, wherein the tensioning mechanism is mounted on the several grid bars so that the grid bars can move in radial and tangential directions in the clearance; the tensioning mechanism includes a tangential tensioning device and a radial tensioning device, wherein the radial tensioning device is mounted in the radial direction of any one of the grid bars, so that the grid bars can move in the radial direction in the clearance; the tangential tensioning device is mounted in series in the tangential direction of the grid bars, so that the grid bars can move in the tangential direction in the clearance. Further disclosed is a combined harvester, which includes the threshing device with two-way pull wires and adjustable threshing clearance.

First claim

The invention claimed is:

1. A threshing device with two-way pull wires and adjustable threshing clearance, the threshing device comprising:
a tensioning mechanism; and
several grid bars in clearance fit with side plates,
wherein, the tensioning mechanism is mounted on the several grid bars, so that the grid bars can move in radial and tangential directions in the clearance,
wherein the tensioning mechanism comprises a tangential tensioning device and a radial tensioning device,
wherein the radial tensioning device is mounted in the radial direction of any one of the grid bars, so that the grid bars can move in the radial direction in the clearance,
wherein the tangential tensioning device is mounted in series in the tangential direction of the grid bars, so that the grid bars can move in the tangential direction in the clearance.

2. The threshing device with two-way pull wires and adjustable threshing clearance according to claim 1 , wherein the radial tensioning device comprises radial pull wires and a power device,
wherein the radial pull wires are mounted on both sides of each grid bar in the radial respectively,
wherein the radial pull wires on both sides are connected with the power device, respectively, so that the radial pull wires are tensioned or loosened by means of the power device;
wherein the tangential tensioning device comprises tangential pull wires and a power device,
wherein the tangential pull wires pass through the grid bars in the tangential direction, and
wherein the tangential pull wires are connected with the power device, so that the tangential pull wires are tensioned or loosened by means of the power device.

3. The threshing device with two-way pull wires and adjustable threshing clearance according to claim 2 , wherein the power device comprises a rotating shaft and an electric motor, wherein the radial pull wires or tangential pull wires are fixed on the rotating shaft, and wherein the electric motor is configured to rotate the rotating shaft.

4. The threshing device with two-way pull wires and adjustable threshing clearance according to claim 2 , wherein the power device comprises an electric push rod and a pull rod, wherein the radial pull wires or the tangential pull wires are fixed on the pull rod, and wherein the electric push rod is configured to make the pull rod reciprocate.

5. The threshing device with two-way pull wires and adjustable threshing clearance according to claim 2 , further comprising guide devices, wherein each guide device is arranged between each grid bar, respectively, and the power device, and wherein the radial pull wires are guided to be parallel to each other by the guide devices, to ensure uniform stress on the radial pull wires simultaneously.

6. The threshing device with two-way pull wires and adjustable threshing clearance according to claim 5 , wherein each guide device comprises a guide mechanism and a fixing plate, wherein the guide mechanism is fixed to the fixing plate, wherein the fixing plate is mounted to a frame, wherein the radial pull wires pass through guide sleeves, so that the radial pull wires connected to the power device are parallel to each other, and wherein the guide mechanisms are guide sleeves or guide pulleys.

7. The threshing device with two-way pull wires and adjustable threshing clearance according to claim 2 , further comprising elastic gaskets, which are arranged in the radial and tangential directions of the grid bars, and are connected to the radial pull wires or tangential pull wires.

8. The threshing device with two-way pull wires and adjustable threshing clearance according to claim 7 , wherein the elastic gaskets comprise lower elastic gaskets, upper elastic gaskets, and right elastic gaskets,
wherein the radial pull wire comprises an upper segment of radial pull wire and an lower segment of radial pull wire,
wherein the upper segment of radial pull wire passes through one radial cross section of the grid bar and is connected to the lower elastic gasket,
wherein the lower segment of radial pull wire passes through the other radial cross section of the grid bar and is connected to the upper elastic gasket,
wherein the right elastic gaskets are arranged on both sides of the grid bar in the tangential direction, and the tangential pull wire passes through the right elastic gaskets, and
wherein the height of the right elastic gasket does not exceed the height of the grid bar.

9. A combined harvester comprising the threshing device with two-way pull wires and adjustable threshing clearance according claim 1 .

Assignees

• Univ Jiangsu

Inventors

• Ma Zheng
• Han Min
• Li Yaoming
• Xu Lizhang
• Ma Kechao
• Tang Zhong
• Lu En
• Liang Zhenwei

Classifications

• A01F12/28 Primary

  Devices for adjusting the concaves · CPC title

• A01F12/26

  Multi-part threshing concaves · CPC title

• A01D75/182

  Avoiding overload · CPC title

• A01F12/181

  Adjustable threshing mechanisms · CPC title

• A01D41/1274

  for drives · CPC title