CN-121977064-A - Active control mechanism of three-dimensional transmission and design method thereof

CN121977064ACN 121977064 ACN121977064 ACN 121977064ACN-121977064-A

Abstract

The invention discloses an active control mechanism of a three-dimensional transmission and a design method thereof, wherein the active control mechanism comprises a sliding block, a ball screw, a contact fixing piece, an active motor, a control unit, a displacement sensor, a related wire harness and a main body structure of the three-dimensional transmission; the driving shaft is required to be axially perforated and grooved at a designated position, the ball screw is fixed in the hole of the driving shaft, the ball nut and the sliding block are connected through the contact and fixing piece and slide in the groove of the driving shaft, the driving motor controls the rotation direction and speed of the screw, the displacement sensor adopts a photoelectric sensor technology and can detect the displacement of the sliding block, and the control unit carries out an error adjustment motor according to the target transmission ratio and the time transmission ratio obtained by measurement and calculation and controls the sliding block to move to the designated position. Therefore, the three-dimensional ball umbrella arc cone transmission can be actively controlled, so that the three-dimensional ball umbrella arc cone transmission has stable transmission characteristics. The design method is not only suitable for the ball umbrella arc cone automatic transmission, but also provides an innovative solution for the field of the transmission, and promotes the technical progress in the field.

Inventors

ZENG ZHAODA
ZHANG YUNQING
WU JINGLAI
GUO JUN
WU ZEHAO
LIU LONGXI
YOU JIANHUI
ZHOU SHUITING
Dou Jingyang

Assignees

湖北信稳精密机械有限公司
广东信稳能控技术研究有限公司

Dates

Publication Date: 20260505
Application Date: 20240126

Claims (8)

1.A three-dimensional transmission active control mechanism and a design method thereof are characterized in that the three-dimensional transmission active control mechanism comprises a sliding block, a ball screw, a contact fixing piece, an active motor, a control unit, a displacement sensor, a related wire harness and a three-dimensional transmission main body structure, wherein a driving shaft is provided with an opening and grooving structure, the opening and grooving structure is arranged in the axial middle of the driving shaft, the grooving structure is arranged on the surface of the driving shaft and close to one end face of the driving shaft, a screw support piece is arranged on one side of the driving shaft, the screw support piece is used for bearing the ball screw, one end of the ball screw is connected with the screw support piece, the other end of the ball screw is firmly connected with the screw support piece through a threaded structure, the other end of the ball screw is in axial contact fixing with the sliding block for controlling the opening angle of a meshing arm, the sliding block is connected with the ball screw through an axial contact fixing mode and can move correspondingly along with the movement of the ball screw, the sliding block surface adopts a coating material with wear resistance to increase durability, the displacement sensor is connected with the ball screw, the motor is fixed on a box, driving device is used for realizing driving and control of the driving shaft through control by controlling the ball screw, and the driving unit comprises a memory, a processor and a communication interface, and active control device.
2. The active control mechanism of the three-dimensional transmission according to claim 1, wherein the open-pore structure of the driving shaft is cylindrical in shape, so that the ball screw can stably rotate and move in the driving shaft, and the open-pore structure is rectangular in shape, so that the sliding block can slide in the groove.
3. The positive control mechanism of a three-dimensional transmission according to claim 1, wherein the screw support employs ball bearings to provide increased load carrying capacity and stability, ensuring smoothness of ball screw motion. The ball screw is connected with the screw support piece by adopting a threaded structure so as to increase the firmness and stability of connection.
4. The positive control mechanism of a three-dimensional transmission according to claim 1, wherein the touch fastener is capable of being in touch-type engagement with the slider, the slider being capable of rolling on the fastener such that the rotational speeds of the touch fastener and the slider are different.
5. The active control mechanism of the three-dimensional transmission according to claim 1, wherein the displacement sensor adopts a photoelectric sensor technology, so that the displacement of the ball screw can be accurately measured, and accurate monitoring of the movement displacement of the sliding block is ensured.
6. The positive control mechanism of a stereoscopic transmission of claim 1, wherein the motor employs a stepper motor to achieve finer rotational control and higher motion resolution.
7. The active control mechanism of a three-dimensional transmission according to claim 1, wherein the control unit is a single-chip microcomputer control mechanism comprising a memory for storing control algorithms and related data, a processor for executing the control algorithms, a communication interface for receiving sensor data and communicating with an external system. The singlechip control mechanism is used for comparing the data of the displacement sensor with target demand data through receiving and processing the data of the displacement sensor, generating a control instruction for the motor and realizing closed-loop feedback control.
8. The three-dimensional transmission active control mechanism and the design method thereof according to claim 1, wherein the design steps are as follows: According to the requirement, open holes are formed in the axial direction of the driving shaft grooving; (a) According to the requirement, open holes are formed in the axial direction of the driving shaft grooving; (b) A screw rod supporting piece is arranged and connected with a ball screw rod; (c) The sliding block is connected with the ball screw and controls the opening angle of the meshing arm through the contact fixing piece; (d) Adding a displacement sensor to measure the displacement of the ball screw; (e) A motor arranged on the box body for controlling the rotation of the ball screw; (f) And a singlechip control mechanism is designed to realize active feedback regulation control of the motor.

Description

Active control mechanism of three-dimensional transmission and design method thereof Technical Field The invention provides an active control mechanism of a three-dimensional transmission and a design method thereof, which are core components in an optimization innovation scheme of a ball umbrella arc cone automatic transmission (patent number: 2021104647311), and can be widely applied to active control of various point-contact friction transmission devices. Background The spherical umbrella arc cone three-dimensional automatic transmission omits a transmission belt and a complex speed change control system, can realize stepless automatic speed change in a wider speed area, and has the advantages of smaller volume, lower energy loss, smooth operation, large speed ratio, simple maintenance and the like. But the three-dimensional automatic transmission of ball umbrella arc cone is mainly suitable for the passive speed change scene of input rotational speed and torque uncertainty, like wind power generation, and the input wind power can have very strong uncertainty along with the influence of various environments such as different seasons, different weather, etc., and the opening angle of meshing arm can be fine adjusted according to wind power size just using the three-dimensional automatic transmission of ball umbrella arc cone to change the transmission ratio. However, in many motor driving and fixed ratio transmission processes, it is required that the transmission has stable transmission characteristics, and if the opening angle of the meshing arm is not stably controlled, the continuous change of the transmission ratio occurs, so that the transmission cannot stably transmit, and thus the requirement cannot be met. Therefore, the related structure of the spherical umbrella arc cone three-dimensional transmission needs to be modified again, so that a proper active control mechanism can be added. In order to solve the problems, the invention particularly relates to an active control mechanism of a three-dimensional transmission and a design method thereof: 1. Through punching the middle of the driving shaft of the three-dimensional transmission, a certain space can be provided for accommodating the rotation and the movement of the ball screw, and meanwhile, a screw rod supporting piece is added on one side of the driving shaft and used for bearing the screw rod; 2. the sliding block for controlling the opening angle of the meshing arm is axially contacted and fixed with the ball screw, namely, the sliding block can be driven to move by the movement of the ball screw, so that the opening angle of the meshing arm can be driven to change; 3. the displacement sensor of the ball screw is added, so that the displacement of the ball screw in movement is determined, the movement displacement of the sliding block is judged, and the opening angle of the meshing arm is determined; 4. The rotation control of the ball screw is carried out through a motor fixed on the box body, so that the automation capacity of the system is further improved; 5. the singlechip control mechanism is added to perform active feedback regulation control on the motor, and the data of the sensor and the target demand data are utilized to perform accurate control on the motor. The invention solves the core problem that the automatic ball umbrella arc cone transmission cannot be controlled accurately, greatly expands the practical range of the automatic ball umbrella arc cone transmission and promotes the practical progress. Disclosure of Invention The invention aims to provide an active control mechanism of a three-dimensional transmission and a design method thereof, which are used for solving the problem that the transmission ratio of the spherical umbrella arc cone three-dimensional transmission is uncontrollable and stable transmission characteristics cannot be obtained. The aim of the invention is achieved by the following technical scheme: An active control mechanism of a three-dimensional transmission and a design method thereof comprise a sliding block, a ball screw, a contact fixing piece, an active motor, a control unit, a displacement sensor, related wire harnesses and a transmission main body structure. The three-dimensional transmission active control mechanism can realize active control of sliding of the sliding block on the transmission driving shaft by utilizing rolling of the ball screw. The sliding block is connected with the meshing arm of the spherical umbrella arc cone three-dimensional transmission through a connecting rod, the sliding block is sleeved on the driving shaft of the transmission in an empty mode, and the sliding block can drive the opening angle of the meshing arm to change along the axial sliding direction. The sliding block is fixedly connected with one end of the ball screw in a contact manner through the fixing piece, the positive and negative rotation of the ball screw drives the sliding block to move le