CN-121970614-A - Rotation speed adjusting device for harvesting machine and harvesting machine

CN121970614ACN 121970614 ACN121970614 ACN 121970614ACN-121970614-A

Abstract

The application discloses a rotating speed adjusting device for a harvesting machine and the harvesting machine, comprising a driving gear train mechanism, a driven gear train mechanism, a first conveyor belt, an electric telescopic driving piece and a controller, wherein a first annular groove with adjustable width is formed on the driving gear train mechanism, a second annular groove is formed on the driven gear train mechanism and is in transmission connection with a rotating connecting shaft of the harvesting machine, two ends of the conveyor belt are clamped on the first annular groove and the second annular groove, the first conveyor belt can rotate under the driving of the driving gear train mechanism, the electric telescopic driving piece is in driving connection with the driving gear train mechanism, and the controller is configured to determine that a rotating speed adjusting signal is received, control the electric telescopic driving piece to execute telescopic operation according to the rotating speed adjusting signal, so that the rotating speed of the rotating connecting shaft is adjusted by adjusting the width of the first annular groove. The rotating speed adjusting device is simple in structure, the rotating speed of the cleaning fan can be conveniently adjusted without stopping the harvesting machine, and the cost is low.

Inventors

PENG WENLIN
ZOU XINJIE
QIU XIANGYU

Assignees

中联农业机械股份有限公司

Dates

Publication Date: 20260505
Application Date: 20251226

Claims (10)

1. A rotational speed adjustment device for a harvesting machine, the rotational speed adjustment device comprising: The driving gear train mechanism (1), wherein a first annular groove (101) with adjustable width is formed on the driving gear train mechanism (1); the driven wheel system mechanism (2) is provided with a second annular groove (201) and is in transmission connection with a rotating connecting shaft of the harvesting machine; One end of the first conveyor belt is sleeved on the driving gear train mechanism (1) and clamped on the first annular groove (101), the other end of the first conveyor belt is sleeved on the driven gear train mechanism (2) and clamped on the second annular groove (201), and the first conveyor belt can rotate under the driving of the driving gear train mechanism (1); An electric telescopic driving piece (3) is in driving connection with the driving gear train mechanism (1); A controller communicatively connected to the electric telescopic drive (3) and configured to: Determining that a rotation speed adjustment signal is received; Controlling the electric telescopic driving piece (3) to execute telescopic operation according to the rotating speed adjusting signal By adjusting the width of the first annular groove (101) to adjust the rotation connecting shaft Is a rotation speed of the motor.
2. The rotation speed adjustment device for a harvesting machine according to claim 1, further comprising a first operation device and a rotation speed detector, both in communication with the controller, the first operation device being for inputting a target rotation speed, the rotation speed detector being for detecting a current rotation speed of the rotation connection shaft, the rotation speed adjustment signal being a target rotation speed transmitted by the first operation device, the controlling the electric telescopic drive (3) to perform a telescopic operation according to the rotation speed adjustment signal comprising: Controlling the rotation speed detector to detect the current rotation speed of the rotation connecting shaft; calculating the rotation speed adjustment amount of the rotation connecting shaft according to the current rotation speed and the target rotation speed; and controlling the electric telescopic driving piece (3) to execute the telescopic operation according to the rotating speed adjustment amount.
3. The rotation speed adjustment device for a harvesting machine according to claim 2, wherein the controlling the electric telescopic drive (3) to perform the telescopic operation according to the rotation speed adjustment comprises: Acquiring a first corresponding relation between the rotation speed adjustment amount and a target width of the first annular groove (101); determining the target width according to the first corresponding relation and the rotating speed adjustment quantity; Acquiring a second correspondence between the target width and a target extension length of the electric telescopic driving piece (3); Determining the target extension length according to the target width and the second corresponding relation; The electric telescopic driving member (3) is controlled to perform the telescopic operation according to the target extension length.
4. The rotation speed adjustment device for a harvesting machine according to claim 1, further comprising a second operation device and a rotation speed detector for detecting a current rotation speed of the rotation connection shaft, wherein an operation key is provided on the second operation device, and the operation key and the rotation speed detector are both in communication connection with the controller, the rotation speed adjustment signal is a signal sent by the operation key that the operation key is in a pressed state, and the controlling the electric telescopic driving member (3) to perform a telescopic operation according to the rotation speed adjustment signal comprises: acquiring a single accumulated duration of the operation key in the pressed state; Determining that the single accumulated time length is greater than a first preset time length and less than a second preset time length; Determining that the rotating speed adjusting device is in a inching speed adjusting mode; acquiring a preset step value; Controlling the rotation speed detector to detect the current rotation speed of the rotation connecting shaft; calculating the target rotating speed of the rotating connecting shaft according to the current rotating speed and the preset step value; -controlling the electric telescopic drive (3) to perform the telescopic operation according to the target rotational speed.
5. The rotation speed adjustment device for a harvesting machine according to claim 4, wherein said controlling the electric telescopic drive (3) to perform the telescopic operation according to the target rotation speed comprises: calculating the rotation speed adjustment amount of the rotation connecting shaft according to the current rotation speed and the target rotation speed; Acquiring a first corresponding relation between the rotation speed adjustment amount and a target width of the first annular groove (101); determining the target width according to the first corresponding relation and the rotating speed adjustment quantity; Acquiring a second correspondence between the target width and a target extension length of the electric telescopic driving piece (3); Determining the target extension length according to the target width and the second corresponding relation; The electric telescopic driving member (3) is controlled to perform the telescopic operation according to the target extension length.
6. The rotation speed adjustment device for a harvesting machine according to claim 4, wherein the controlling the electric telescopic drive (3) to perform a telescopic operation according to the rotation speed adjustment signal further comprises: under the condition that the single accumulated time length is larger than the second preset time length, determining that the rotating speed adjusting device is in a long-press speed adjusting mode; Determining the telescopic operation duration of the electric telescopic driving piece (3) according to the single accumulated duration; and controlling the electric telescopic driving piece (3) to execute the telescopic operation according to the telescopic operation duration.
7. The rotation speed adjustment device for a harvesting machine according to claim 1, wherein the drive train mechanism (1) comprises: a first connecting shaft (102); A first fixed disc (103), wherein an axial protruding part (1031) and a fixed disc part (1032) are formed on the first fixed disc (103), the axial protruding part (1031) is rotatably sleeved on the first connecting shaft (102), and the fixed disc part (1032) is positioned on the outer periphery side of the axial protruding part (1031) and is connected with the axial protruding part (1031); The first movable disc (104) is movably sleeved on the axial protruding portion (1031) and connected with the telescopic end of the electric telescopic driving piece (3), and the first movable disc (104) and the fixed disc portion (1032) jointly form the first annular groove (101).
8. The rotation speed adjustment device for a harvesting machine according to claim 7, wherein the passive powertrain mechanism (2) comprises: A second connecting shaft (202) rotatably provided on one side of the first connecting shaft (102); The second fixed disc (203) is sleeved on the second connecting shaft (202) and is connected with the second connecting shaft (202); the second movable disc (204) is sleeved on the second connecting shaft (202) and forms the second annular groove (201) together with the second fixed disc (203); and the conveying belt wheel (205) is sleeved on the second connecting shaft (202) and connected with the second connecting shaft (202), and the conveying belt wheel (205) is in transmission connection with the rotating connecting shaft.
9. The rotation speed adjusting device for a harvesting machine according to claim 8, wherein the second movable disk (204) is movably sleeved on the second connecting shaft (202), and the driven wheel system mechanism (2) further comprises an elastic pressing piece (206) sleeved on the second connecting shaft (202) and respectively pressed on the second movable disk (204) and the conveying belt wheel (205) at two ends.
10. Harvesting machine, characterized in that it comprises a rotation speed adjustment device for a harvesting machine according to any one of claims 1-9.

Description

Rotation speed adjusting device for harvesting machine and harvesting machine Technical Field The application belongs to the technical field of harvesting machinery, and particularly relates to a rotating speed adjusting device for harvesting machinery and the harvesting machinery. Background The cleaning fan in the harvesting machine is a key component for separating and cleaning seeds, stalks, sundries and the like by generating cleaning air flow, and the rotating speed of the cleaning fan is required to be regulated to ensure the cleaning effect when crops with different water contents or varieties are harvested, so that lower cleaning loss in the harvesting process is realized. Most of the rotating speed adjusting devices of the existing cleaning fans are mechanical or hydraulic adjusting devices, the rotating speed of the mechanical adjusting devices cannot be adjusted in the operation process, the rotating mechanism position is manually changed to achieve the effect when the machine is stopped, and the hydraulic adjusting devices are high in cost due to the fact that the hydraulic adjusting devices need materials such as pumps, motors and oil pipes. Disclosure of Invention The application aims to provide a rotating speed adjusting device for a harvesting machine and the harvesting machine, which are simple in structure, low in cost and capable of conveniently adjusting the rotating speed of a cleaning fan without stopping the harvesting machine. In order to achieve the above object, a first aspect of the present application provides a rotation speed adjusting device for a harvesting machine, the rotation speed adjusting device comprising: The driving gear train mechanism is provided with a first annular groove with adjustable width; the driven wheel system mechanism is provided with a second annular groove and is in transmission connection with a rotating connecting shaft of the harvesting machine; One end of the first conveyor belt is sleeved on the driving gear train mechanism and clamped in the first annular groove, the other end of the first conveyor belt is sleeved on the driven gear train mechanism and clamped in the second annular groove, and the first conveyor belt can rotate under the driving of the driving gear train mechanism; The electric telescopic driving piece is in driving connection with the driving gear train mechanism; A controller communicatively coupled to the motorized telescopic drive and configured to: Determining that a rotation speed adjustment signal is received; Controlling the electric telescopic driving part to execute telescopic operation according to the rotating speed adjusting signal so as to adjust The width of the first annular groove adjusts the rotational speed of the rotational connection shaft. In an embodiment of the present application, the rotation speed adjustment device further includes a first operation device and a rotation speed detector, both in communication with the controller, the first operation device is configured to input a target rotation speed, the rotation speed detector is configured to detect a current rotation speed of the rotation connection shaft, the rotation speed adjustment signal is a target rotation speed sent by the first operation device, and controlling the electric telescopic driving member to perform a telescopic operation according to the rotation speed adjustment signal includes: the control rotation speed detector detects the current rotation speed of the rotating connecting shaft; Calculating the rotation speed adjustment quantity of the rotation connecting shaft according to the current rotation speed and the target rotation speed; and controlling the electric telescopic driving piece to execute telescopic operation according to the rotating speed adjustment quantity. In an embodiment of the present application, controlling the electric telescopic driving member to perform the telescopic operation according to the rotation speed adjustment amount includes: acquiring a first corresponding relation between the rotating speed adjustment quantity and the target width of the first annular groove; determining a target width according to the first corresponding relation and the rotation speed adjustment quantity; acquiring a second corresponding relation between the target width and the target extension length of the electric telescopic driving piece; Determining a target extension length according to the target width and the second corresponding relation; the electric telescopic driving piece is controlled to execute telescopic operation according to the target extension length. In an embodiment of the present application, the rotation speed adjusting device further includes a second operation device and a rotation speed detector for detecting a current rotation speed of the rotation connection shaft, the second operation device is provided with an operation key, the operation key and the rotation speed detector are both in commu