CN-121993568-A - Transmission device, fluid conveying equipment and automatic injection system

CN121993568ACN 121993568 ACN121993568 ACN 121993568ACN-121993568-A

Abstract

The application provides a transmission device, fluid conveying equipment and an automatic injection system, and belongs to the technical field of transmission. Comprises a first transmission shaft, a first transmission part, a second transmission part, a first rotating part, a second rotating part, a linear motion part and a distance sensor. The first transmission piece and the second transmission piece are all in a fan ring shape, and the first transmission piece and the second transmission piece are both installed on the first transmission shaft. The first rotating piece is in transmission fit with the linear motion part. When the first transmission member is in transmission engagement with the first rotation member, the second transmission member is separated from the second rotation member, with at least one distance sensor in a detection position and at least one distance sensor in a calibration position. When the first transmission piece is separated from the first rotation piece, the second transmission piece is in transmission fit with the second rotation piece, the second rotation piece rotates relative to the first rotation piece, and the distance sensors of the detection position and the calibration position are exchanged. The device can realize continuous and real-time monitoring of transmission precision while executing transmission tasks.

Inventors

DU YANG
Tang Qianling
PAN CHAO
MA RUILI
YU JIAXIN
ZHOU XUEJUAN

Assignees

四川玖谊源粒子科技有限公司

Dates

Publication Date: 20260508
Application Date: 20260409

Claims (9)

1. The transmission device is characterized by comprising a first transmission shaft, a first transmission piece, a second transmission piece, a first rotating piece, a second rotating piece, a linear motion part and a distance sensor; The first transmission piece and the second transmission piece are in a fan ring shape, and the first transmission piece and the second transmission piece are both arranged on the first transmission shaft; the outer annular wall of the first transmission member is provided with a first tooth part, and the outer annular wall of the second transmission member is provided with a second tooth part; The first rotating piece is in transmission fit with the linear motion part; The number of the distance sensors is at least two, and the distance sensors are arranged on the second rotating piece and are distributed at intervals along the rotating direction of the second rotating piece; The first transmission piece is used for being in transmission fit with the first rotation piece, the second transmission piece is used for being in transmission fit with the second rotation piece, and the rotation resistance of the first rotation piece is larger than that of the second rotation piece; When the first transmission piece is in transmission fit with the first rotation piece through the first tooth part, the second transmission piece is separated from the second rotation piece, the first rotation piece drives the linear movement part to move, at least one distance sensor is positioned at a detection position, and at least one distance sensor is positioned at a calibration position; when the first transmission piece is separated from the first rotation piece, the second transmission piece is in transmission fit with the second rotation piece through the second tooth part, the second rotation piece rotates relative to the first rotation piece, and the distance sensors of the detection position and the calibration position are exchanged; wherein the distance sensor at the detection position is used for detecting the position of the linear motion portion, and the distance sensor at the calibration position is used for executing a calibration procedure.
2. The transmission device according to claim 1, wherein the first rotating member is cylindrical, and the second rotating member is disposed in the first rotating member and rotatably engaged with the first rotating member; The inner annular wall of the first rotating member is fixedly connected with a matching ring, and the matching ring and the first rotating member are coaxially arranged; the second rotating piece is fixedly connected with a positioning rod, the positioning rod is perpendicular to the rotating axis of the second rotating piece, and each distance sensor is correspondingly provided with one positioning rod; The positioning rod is provided with a first rotating piece, a second rotating piece and a distance sensor, wherein the first rotating piece is arranged on the first rotating piece, the second rotating piece is arranged on the second rotating piece, and the distance sensor is arranged on the second rotating piece; Wherein the distance sensor located at the detection position is disposed toward the linear motion portion, and the distance sensor located at the calibration position is disposed toward the second rotation member.
3. The transmission of claim 2, wherein one end of the first rotating member is closed by a sealing plate and the second rotating member extends from an end of the first rotating member remote from the sealing plate beyond the first rotating member; the sealing plate is provided with a detection port for giving way to the distance sensor positioned at the detection position.
4. The transmission of claim 2, further comprising a slide rail and a reference member; The sliding rail is arranged at one side of the first rotating piece far away from the linear motion part and is arranged at intervals with the first rotating piece; The distance sensor in the calibration position is disposed toward the reference member; The first rotating part is in transmission fit with the reference part through the reciprocating driving mechanism, and in the process that the first transmission part is just matched with the first rotating part until the first transmission part is just separated from the first rotating part, the first rotating part drives the reference part to complete N times of complete reciprocating motions, wherein N is a positive integer.
5. The transmission of claim 4, wherein the sidewall of the first rotating member has an inner cavity that extends continuously in a ring shape along the circumference of the first rotating member; the inner annular wall of the first rotating part is provided with a matching hole communicated with the inner cavity, a lock tongue is slidably matched in the matching hole, and the lock tongue and the matching hole are in sliding seal; the outer annular wall of the first rotating piece is provided with a first communication port communicated with the inner cavity; The outer annular wall of the first rotating member is also sleeved with a first reference ring, the inner annular wall of the first reference ring is attached to the outer annular wall of the first rotating member, and the first rotating member is rotatably matched with the first reference ring; The inner annular wall of the first reference ring is provided with a first groove which continuously extends along the circumferential direction of the first reference ring to form a ring shape, and the first communication port is communicated with the first groove; The transmission device also comprises a third transmission piece and a second reference ring; The third transmission part is also in a fan ring shape and is matched with the first transmission shaft; The central angle degree corresponding to the second transmission piece is smaller than the central angle degree corresponding to the first rotation piece, the central angle degree corresponding to the first rotation piece is smaller than the central angle degree corresponding to the third transmission piece, and the sum of the central angle degree corresponding to the second transmission piece and the central angle degree corresponding to the third transmission piece is smaller than 360 degrees; The first cavity and the second cavity extend along the circumferential direction of the first transmission shaft, a first arc-shaped piece is slidably matched in the first cavity, a second arc-shaped piece is slidably matched in the second cavity, the first arc-shaped piece is slidably sealed with the first cavity, and a first elastic piece is abutted between the second arc-shaped piece and the inner end wall of the second cavity; the second transmission piece is arranged in the notch, and the first arc-shaped piece and the second arc-shaped piece are connected to the second transmission piece; under the action of the elasticity of the first elastic piece in a natural state, the second transmission piece is abutted against one side, close to the first cavity, of the notch; The second reference ring and the first transmission shaft are coaxially arranged, the second reference ring is attached to one side of the third transmission member, and the third transmission member is rotatably matched with the second reference ring; The side wall of the second reference ring, which is close to the third transmission member, is provided with a second groove which continuously extends into a ring shape along the circumferential direction of the second reference ring, and one side of the third transmission member, which is close to the second reference ring, is provided with a second communication port for communicating the second groove with the first cavity; A second elastic piece is connected between the lock tongue and the inner wall of the inner cavity, and the second elastic piece is in an elastic stretching state; A communicating pipe is connected between the first reference ring and the second reference ring, and the communicating pipe communicates the first groove with the second groove; The inner cavity, the first groove, the communicating pipe, the second groove and the first cavity are filled with liquid media; The second rotating piece is provided with a lock hole matched with the lock tongue; The second transmission piece is matched with the second rotation piece just until the second transmission piece is separated from the second rotation piece just, and the second transmission piece drives the second rotation piece to rotate for P weeks relative to the first rotation piece, wherein P is a positive integer; the maximum elastic force of the first elastic piece is smaller than the rotation resistance of the first rotating piece, and the maximum elastic force of the first elastic piece is also smaller than the rotation resistance of the second rotating piece; When the second transmission piece is abutted to one side, close to the first cavity, of the notch, the lock tongue is locked into the lock hole; When the second transmission piece is just matched with the second rotation piece, the second transmission piece pushes the second rotation piece to the other side of the notch; when the second transmission piece abuts against the other side of the notch, the lock tongue withdraws from the lock hole; when the second transmission piece is just separated from the second rotation piece, the first elastic piece drives the second transmission piece to rotate and reset relative to the third transmission piece, and the lock tongue is locked into the lock hole again.
6. The transmission of claim 5, wherein the first rotating member is fixedly connected to a second drive shaft; the transmission device also comprises a screw rod and a nut; The end face of one end of the screw rod is provided with a matching cavity extending along the axial direction of the screw rod, and the matching cavity and the screw rod are coaxially arranged; The second transmission shaft is matched in the matching cavity, and is in sliding fit with the screw rod along the axial direction of the second transmission shaft; The nut is sleeved on the screw rod and is in threaded fit with the screw rod; The linear motion part is connected to one end of the screw rod, which is far away from the second transmission shaft.
7. The transmission device according to claim 6, wherein the nut is further coaxially provided with an outer ring body, an inner diameter of the outer ring body is larger than an outer diameter of the nut, the outer ring body and the nut are fixedly connected by a connecting rib, and a gap between the outer ring body and the nut is used for giving way for detecting a position of the linear movement portion by the distance sensor.
8. A fluid delivery apparatus comprising a driver, a cylinder, a piston, and a transmission according to any one of claims 1 to 7; The piston is matched in the cylinder; the linear motion part of the transmission device is fixedly connected with the piston; the driver is in transmission fit with the first transmission shaft.
9. An automated bolus system comprising a controller and the fluid delivery device of claim 8; the cylinder of the fluid conveying device is a syringe; The driver of the fluid delivery device is electrically connected to and controlled by the controller.

Description

Transmission device, fluid conveying equipment and automatic injection system Technical Field The application relates to the technical field of transmission, in particular to a transmission device, fluid conveying equipment and an automatic injection system. Background Transmission devices are widely used in various industrial fields. For the transmission device, the transmission precision is one of the most important indexes, and the precision of related processes and working procedures is directly related. In a use scenario where the transmission accuracy is particularly high, in order to ensure the transmission accuracy of the transmission, the accuracy of the transmission is monitored in a time-based detection and calibration manner. This approach is not only labor intensive, but also still has a monitoring blind area, for example, a decline in accuracy occurs at a time point between two adjacent detection calibration works, which cannot be found in time, but which has actually had an influence on the relevant work, although it can be found at the next detection calibration. In view of this, the present application has been made. Disclosure of Invention The first object of the application is to provide a transmission device, which can realize continuous and real-time monitoring of transmission precision while executing transmission tasks, does not need manual intervention, reduces the working strength of staff, facilitates the real-time control of the transmission precision, and effectively ensures the timeliness of finding precision problems. A second object of the present application is to provide a fluid conveying apparatus, which can perform a fluid conveying task while continuously and real-timely monitoring conveying accuracy, without manual intervention, not only reduces the working strength of workers, but also facilitates real-time grasping of the conveying accuracy, and effectively ensures timeliness of finding conveying problems. The third object of the application is to provide an automatic bolus injection system, which can realize continuous and real-time monitoring of bolus injection precision while executing a bolus injection task, does not need manual intervention, reduces the working intensity of staff, facilitates the real-time mastering of the bolus injection precision, and effectively ensures the timeliness of finding bolus injection problems. Embodiments of the present application are implemented as follows: A transmission device comprises a first transmission shaft, a first transmission member, a second transmission member, a first rotation member, a second rotation member, a linear motion part and a distance sensor. The first transmission piece and the second transmission piece are all in a fan ring shape, and the first transmission piece and the second transmission piece are both installed on the first transmission shaft. The outer annular wall of the first transmission member is provided with a first tooth part, and the outer annular wall of the second transmission member is provided with a second tooth part. The first rotating piece is in transmission fit with the linear motion part. The distance sensors are at least two, and are arranged on the second rotating piece and distributed at intervals along the rotating direction of the second rotating piece. The first transmission piece is used for being in transmission fit with the first rotation piece. The second transmission piece is used for being in transmission fit with the second rotation piece. The rotation resistance of the first rotating member is larger than the rotation resistance of the second rotating member. When the first transmission piece is in transmission fit with the first rotation piece through the first tooth part, the second transmission piece is separated from the second rotation piece, and the first rotation piece drives the linear movement part to move, at the moment, at least one distance sensor is located at a detection position, and at least one distance sensor is located at a calibration position. When the first transmission piece is separated from the first rotation piece, the second transmission piece is in transmission fit with the second rotation piece through the second tooth part, the second rotation piece rotates relative to the first rotation piece, and the distance sensors of the detection position and the calibration position are exchanged. Wherein the distance sensor at the detection position is used for detecting the position of the linear motion part, and the distance sensor at the calibration position is used for executing the calibration procedure. Further, the first rotating member is cylindrical, and the second rotating member is disposed in the first rotating member and rotatably engaged with the first rotating member. The rotation axes of the first rotation piece and the second rotation piece are overlapped. The inner annular wall of the first rotating member is fixedly connected wit