An omnidirectional anti-collision system for stirring blades

Abstract

This invention relates to the field of medical device technology, specifically to an omnidirectional anti-collision system for a stirring blade, comprising a support assembly, a radial joint bearing, two elastic contacts, multiple tension springs, a flange shaft, a copper ring, a rotating device, and a stirring blade. Multiple tension springs are fixedly connected above the support assembly, the flange shaft is fixedly connected above the multiple tension springs, the copper ring is mounted on the flange shaft, the rotating device is mounted on the flange shaft, and the stirring blade is fixedly connected below the rotating device. When the stirring blade collides, the outer circle of the flange shaft, along with the inner ring of the radial joint bearing, tilts, causing the elastic contacts to disengage from the copper ring, forming an open circuit. The software uses this open circuit signal to determine that the instrument's stirring device is in a collision state and immediately stops the current operation. It can simultaneously sense collisions in any direction—vertically and horizontally (360°)—to prevent damage to the stirring blade.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to an omnidirectional anti-collision system for a stirring impeller. Background Technology

[0002] In the field of medical devices, in vitro diagnostic equipment obtains clinical diagnostic information by testing human samples (body fluids, tissues, etc.), thereby determining diseases or bodily functions. Currently, in vitro diagnostics is one of the most widely used diagnostic methods in the medical field. The process usually requires the mechanical components inside the testing equipment to complete a series of complex actions such as sampling, separation, mixing, cleaning, and reading. The stirring device is an important component of this type of instrument. The stirring device usually uses a stirring paddle to stir and mix the reagents and samples added to the reaction vessel, accelerating the reaction speed and ensuring the homogeneity of the solution meets the testing requirements. Whether the stirring paddle blades are working properly will directly affect the normal testing of the instrument. If human error or instrument malfunction occurs during the testing process, the stirring paddle blades may collide with obstacles, causing the stirring paddle to bend or break. The stirring paddle blades are specially manufactured and expensive instrument components. To avoid damage to the stirring paddle blades, anti-collision devices are usually set up for the stirring paddle blades. However, the existing anti-collision devices can only detect collisions in one direction, and the anti-collision performance is insufficient. Summary of the Invention

[0003] The purpose of this invention is to provide an omnidirectional anti-collision system for stirring blades, which can simultaneously detect collisions in any direction, both vertically and horizontally (360°).

[0004] To achieve the above objectives, the present invention provides an omnidirectional anti-collision system for agitator blades. The system includes a support assembly, a radial joint bearing, two elastic contacts, multiple tension springs, a flange shaft, a copper ring, a rotating device, and an agitator blade. The radial joint bearing is fixedly connected to the support assembly and is located inside the support assembly. The two elastic contacts are respectively fixedly connected to the support assembly and are located on the sides of the support assembly. The multiple tension springs are respectively fixedly connected to the support assembly and are located on the sides of the support assembly. The flange shaft is fixedly connected to the multiple tension springs, passes through the radial joint bearing, and is located on the side of the multiple tension springs away from the support assembly. The copper ring is fixedly connected to the flange shaft and is located on the side of the flange shaft closer to the two elastic contacts. The rotating device is fixedly connected to the flange shaft and passes through the flange shaft. The agitator blade is fixedly connected to the rotating device, passes through the radial joint bearing and the support assembly, and is located below the rotating device.

[0005] The omnidirectional anti-collision system for the stirring blades also includes an open retaining ring; the open retaining ring is fixedly connected to the flange shaft, located on the side of the flange shaft, and below the radial joint bearing.

[0006] The open retaining ring can axially limit the outer circle of the flange shaft, preventing the flange shaft from coming out of the inner ring of the radial spherical bearing.

[0007] The rotating device includes a motor and a coupling sleeve; the motor is fixedly connected to the flange shaft and located above the flange shaft; the coupling sleeve is fixedly connected to the output end of the motor and fixedly connected to the stirring blade, and located between the motor and the stirring blade, and the coupling sleeve passes through the flange shaft.

[0008] The motor can drive the coupling sleeve to rotate, thereby driving the stirring blade to rotate through the coupling sleeve.

[0009] The support assembly includes a support base and a support arm; the support base is fixedly connected to a plurality of tension springs and to the radial joint bearing, and is located on the side of the plurality of tension springs away from the flange shaft; the support arm is fixedly connected to the support base and is located on the side of the support base away from the plurality of tension springs.

[0010] The support base can limit the position of the radial joint bearing.

[0011] The support base includes a mounting base and a base plate; the mounting base is fixedly connected to a plurality of tension springs and to the radial joint bearing, and is located on the side of the plurality of tension springs away from the flange shaft; the base plate is fixedly connected to the mounting base and to the support arm, and is located between the mounting base and the support arm.

[0012] The mounting base is an insulator that can limit the movement of the radial spherical bearing, and the base plate can connect the mounting base to the support arm.

[0013] The base plate includes a plate body and a plurality of screws; the plate body is located between the mounting base and the support arm; the plurality of screws are respectively threaded to the plate body and to the mounting base, and respectively pass through the plate body and the mounting base.

[0014] The plate can be fixed to the mounting base by multiple screws, which facilitates assembly.

[0015] This invention discloses an omnidirectional anti-collision system for a stirring blade. When the stirring blade collides, the outer circle of the flange shaft, along with the inner ring of the radial spherical bearing, tilts. Simultaneously, the outer circle of the flange shaft slides within the inner ring of the radial spherical bearing, and the elastic contact disengages from the copper ring, forming an open circuit. The software uses this open circuit signal to determine that the instrument's stirring device is in a collision state and immediately stops the current operation. It can simultaneously detect collisions in any direction, both vertically and horizontally (360°), preventing damage to the stirring blade. Furthermore, the sway of the stirring blade is limited by the radial spherical bearing, and it can automatically reset under the action of the tension spring after the obstacle is removed. The reset accuracy is high, and the position of the stirring blade does not need to be readjusted after reset. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is an exploded view of an omnidirectional anti-collision system for a stirring impeller according to the present invention;

[0018] Figure 2 This is a schematic diagram of the support assembly, radial joint bearing, two elastic contacts, and multiple fastening screws of the present invention.

[0019] Figure 3 This is a cross-sectional view of the radial spherical bearing, multiple elastic contacts, multiple tension springs, flange shaft, copper ring, rotating device, stirring blade and mounting base of the present invention.

[0020] Figure 4 This is a cross-sectional view of the flange shaft, copper ring, rotating device, and stirring blade of the present invention;

[0021] Figure 5 This is a schematic diagram of the mounting base, plate, multiple screws, radial spherical bearing and two elastic contacts of the present invention.

[0022] Figure 6 This is a cross-sectional view of the two elastic contacts, the radial spherical bearing, and the mounting base of the present invention;

[0023] Figure 7 This is a schematic diagram of the structure of an omnidirectional anti-collision system for a stirring blade according to the present invention when it encounters an obstacle in the vertical direction;

[0024] Figure 8 This is a schematic diagram of the structure of an omnidirectional anti-collision system for a stirring blade of the present invention when it encounters an obstacle on the right side;

[0025] Figure 9 This is a schematic diagram of the structure of an omnidirectional anti-collision system for a stirring blade of the present invention when it encounters an obstacle on the left.

[0026] 1-Support assembly, 2-Radial spherical bearing, 3-Elastic contact, 4-Tension spring, 5-Flange shaft, 6-Copper ring, 7-Rotating device, 8-Agitator blade, 9-Open retaining ring, 11-Support base, 12-Support arm, 13-Mounting base, 14-Base plate, 71-Motor, 72-Coupling sleeve, 141-Plate body, 142-Screw, 143-Fasting screw, 1410-Oval hole. Detailed Implementation

[0027] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0028] In the description of this invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, in the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0029] Please see Figures 1-9This invention provides an omnidirectional anti-collision system for agitator blades: the omnidirectional anti-collision system for agitator blades includes a support assembly 1, a radial joint bearing 2, two elastic contacts 3, multiple tension springs 4, a flange shaft 5, a copper ring 6, a rotating device 7, and an agitator blade 8; the radial joint bearing 2 is fixedly connected to the support assembly 1 and is located inside the support assembly 1; the two elastic contacts 3 are respectively fixedly connected to the support assembly 1 and are respectively located on the side of the support assembly 1; the multiple tension springs 4 are respectively fixedly connected to the support assembly 1 and are respectively located on the side of the support assembly 1. The flange shaft 5 is fixedly connected to the side of the support assembly 1; it passes through the radial joint bearing 2 and is located on the side of the multiple tension springs 4 away from the support assembly 1; the copper ring 6 is fixedly connected to the flange shaft 5 and is located on the side of the flange shaft 5 near the two elastic contacts 3; the rotating device 7 is fixedly connected to the flange shaft 5 and passes through the flange shaft 5; the stirring blade 8 is fixedly connected to the rotating device 7, passes through the radial joint bearing 2 and the support assembly 1, and is located below the rotating device 7.

[0030] In this embodiment, the flange shaft 5 has an outer circle that penetrates the inner ring of the radial spherical bearing 2. The outer circle of the flange shaft 5 and the inner ring of the radial spherical bearing 2 are in a small clearance fit. The flange shaft 5 can slide axially within the inner ring of the radial spherical bearing 2 and can be precisely positioned by the inner ring of the radial spherical bearing 2 in the diametrical direction. The elastic contact 3 is an elastic body with good conductivity. The elastic contact 3 is fixed to the support assembly 1 by screws, and the contact portion is slightly higher than the support assembly 1.

[0031] When in use, when the stirring device does not encounter any obstacles, the flange shaft 5 is subjected to the tension of the circumferentially distributed tension springs 4, and the lower end face of the flange shaft 5 is in close contact with the upper end face of the support assembly 1. At this time, both elastic contacts 3 are in contact with the copper ring 6, forming a circuit. The software judges that the instrument stirring device is in normal working condition through this circuit signal.

[0032] When the stirring device moves downward and encounters an obstacle in the vertical direction, the stirring blade 8 collides with the obstacle in the vertical direction, the outer circle of the flange shaft 5 slides in the inner ring of the radial spherical bearing 2, and the flange shaft 5 is pushed upward. At this time, the two elastic contacts 3 and the copper ring 6 are disengaged, forming an open circuit. The software judges that the instrument stirring device is in a collision state through this open circuit signal, immediately stops the current action, and issues a collision warning.

[0033] When the stirring device is moving horizontally and encounters an obstacle on its right (see reference) Figure 8The stirring blade 8 collides horizontally with the obstacle, and the flange shaft 5, together with the inner ring of the radial spherical bearing 2, tilts at an angle α (reference). Figure 8 When the flange shaft 5 tilts, the outer circle of the flange shaft 5 slides in the inner ring of the radial spherical bearing 2. At this time, the elastic contact 3 on the left side disengages from the copper ring 6, forming an open circuit. The software judges that the instrument stirring device is in a collision state through this open circuit signal, immediately stops the current action, and issues a collision warning. After the obstacle is removed, the flange shaft 5 returns to its original position under the action of the tension spring 4. At this time, the lower end face of the flange shaft 5 is close to the upper end face of the support assembly 1. The axis of the flange shaft 5, together with the inner ring of the radial spherical bearing 2, coincides with the axis of the outer ring of the radial spherical bearing 2. The two elastic contacts 3 contact the copper ring 6, and a closed circuit is formed again.

[0034] When the stirring device is moving horizontally and encounters an obstacle on the left (see reference) Figure 9 The stirring blade 8 collides horizontally with the obstacle, and the flange shaft 5, together with the inner ring of the radial spherical bearing 2, tilts at an angle β (reference). Figure 9 When the flange shaft 5 tilts, the outer circle of the flange shaft 5 slides in the inner ring of the radial spherical bearing 2. At this time, the elastic contact 3 on the right side disengages from the copper ring 6, forming an open circuit. The software judges that the instrument stirring device is in a collision state through this open circuit signal, immediately stops the current action, and issues a collision warning. When the obstacle is removed, the flange shaft 5 returns to its original position under the action of the tension spring 4. At this time, the lower end face of the flange shaft 5 is close to the upper end face of the support assembly 1. The axis of the flange shaft 5, together with the inner ring of the radial spherical bearing 2, coincides with the axis of the outer ring of the radial spherical bearing 2. The two elastic contacts 3 contact the copper ring 6, and the circuit is restored.

[0035] In this way, collisions in both the vertical and horizontal 360° directions can be detected simultaneously, preventing damage to the stirring blade 8. Furthermore, the sway of the stirring blade 8 is limited by the radial joint bearing 2, and it can automatically reset under the action of the tension spring 4 after the obstacle is removed. The reset accuracy is high, and the position of the stirring blade 8 does not need to be readjusted after reset.

[0036] Furthermore, the omnidirectional anti-collision system for the stirring blade also includes an open retaining ring 9; the open retaining ring 9 is fixedly connected to the flange shaft 5, located on the side of the flange shaft 5, and below the radial spherical bearing 2.

[0037] In this embodiment, the open retaining ring 9 is installed on the outer circle of the flange shaft 5. The open retaining ring 9 can axially limit the outer circle of the flange shaft 5 and prevent the flange shaft 5 from coming out of the inner ring of the radial spherical bearing 2.

[0038] Furthermore, the rotating device 7 includes a motor 71 and a coupling sleeve 72; the motor 71 is fixedly connected to the flange shaft 5 and is located above the flange shaft 5; the coupling sleeve 72 is fixedly connected to the output end of the motor 71 and is fixedly connected to the stirring blade 8, and is located between the motor 71 and the stirring blade 8, and the coupling sleeve 72 passes through the flange shaft 5.

[0039] In this embodiment, the motor 71 can drive the coupling sleeve 72 to rotate, thereby driving the stirring blade 8 to rotate through the coupling sleeve 72.

[0040] Furthermore, the support assembly 1 includes a support base 11 and a support arm 12; the support base 11 is fixedly connected to the plurality of tension springs 4 respectively, and is fixedly connected to the radial joint bearing 2, and is located on the side of the plurality of tension springs 4 away from the flange shaft 5; the support arm 12 is fixedly connected to the support base 11, and is located on the side of the support base 11 away from the plurality of tension springs 4.

[0041] In this embodiment, the support base 11 can limit the position of the radial joint bearing 2.

[0042] Furthermore, the support base 11 includes a mounting base 13 and a base plate 14; the mounting base 13 is fixedly connected to a plurality of tension springs 4 and to the radial joint bearing 2, and is located on the side of the plurality of tension springs 4 away from the flange shaft 5; the base plate 14 is fixedly connected to the mounting base 13 and to the support arm 12, and is located between the mounting base 13 and the support arm 12.

[0043] In this embodiment, the mounting base 13 is an insulator that can limit the movement of the radial spherical bearing 2. The base plate 14 can connect the mounting base 13 to the support arm 12. The base plate 14 has a circular hole in the center, the diameter of which is smaller than that of the inner ring of the radial spherical bearing 2. This hole can limit the axial movement of the outer ring of the radial spherical bearing 2, but does not affect the swing of the flange shaft 5.

[0044] Furthermore, the base plate 14 includes a plate body 141 and a plurality of screws 142; the plate body 141 is located between the mounting base 13 and the support arm 12; the plurality of screws 142 are respectively threaded to the plate body 141 and respectively threaded to the mounting base 13, and respectively pass through the plate body 141 and the mounting base 13.

[0045] In this embodiment, both the plate 141 and the mounting base 13 are provided with a plurality of screw holes that match the screws 142. The plate 141 and the mounting base 13 can be fixed by the plurality of screws 142, which facilitates assembly.

[0046] Furthermore, the base plate 14 also includes a plurality of fastening screws 143; the plurality of fastening screws 143 are slidably connected to the plate body 141 and are respectively located on the side of the plate body 141.

[0047] In this embodiment, the support arm 12 is provided with a plurality of screw holes that match the fastening screws 143. By passing the fastening screws 143 through the plate 141 and screwing them into the screw holes of the support arm 12, the plate 141 and the support arm 12 can be fixed.

[0048] Furthermore, the plate 141 has a plurality of waist-shaped holes 1410; the plurality of waist-shaped holes 1410 are respectively located on the side of the bottom plate 14.

[0049] In this embodiment, the oblong hole 1410 is adapted to the fastening screw 143. By passing the fastening screw 143 through the plate 141 and screwing it into the screw hole of the support arm 12, the plate 141 and the support arm 12 can be fixed. The oblong hole 1410 has a certain length, so that the plate 141 can be finely adjusted in the length direction of the oblong hole 1410.

[0050] The above description discloses only one preferred embodiment of the present invention, and should not be construed as limiting the scope of the present invention. Those skilled in the art will understand that all or part of the processes of the above embodiments can be implemented, and equivalent changes made in accordance with the claims of the present invention are still within the scope of the invention.

Claims

1. An omnidirectional anti-collision system for agitator blades, characterized in that, The omnidirectional anti-collision system for the stirring blade includes a support assembly, a radial spherical bearing, two elastic contacts, multiple tension springs, a flange shaft, a copper ring, a rotating device, and stirring blades; the radial spherical bearing is fixedly connected to the support assembly and is located inside the support assembly; The two elastic contacts are respectively fixedly connected to the support assembly and are located on the side of the support assembly; The plurality of tension springs are respectively fixedly connected to the support assembly and are located on the side of the support assembly; The flange shaft is fixedly connected to multiple tension springs, passes through the radial spherical bearing, and is located on the side of the multiple tension springs away from the support assembly; the copper ring is fixedly connected to the flange shaft and is located on the side of the flange shaft near the two elastic contacts; the rotating device is fixedly connected to the flange shaft and passes through the flange shaft; the stirring blade is fixedly connected to the rotating device, passes through the radial spherical bearing and the support assembly, and is located below the rotating device; the flange shaft has an outer circle, the outer circle of the flange shaft passes through the inner ring of the radial spherical bearing, the outer circle of the flange shaft and the inner ring of the radial spherical bearing are in a small clearance fit, the flange shaft can slide axially in the inner ring of the radial spherical bearing, and can be positioned by the inner ring of the radial spherical bearing in the diametrical direction; the elastic contact is an elastomer and is conductive, the elastic contact is fixed to the support assembly by screws, and the contact portion is higher than the support assembly.

2. The omnidirectional anti-collision system for agitator blades as described in claim 1, characterized in that, The omnidirectional anti-collision system for the agitator blades also includes an open retaining ring; the open retaining ring is fixedly connected to the flange shaft, located on the side of the flange shaft, and below the radial joint bearing.

3. The omnidirectional anti-collision system for agitator blades as described in claim 1, characterized in that, The rotating device includes a motor and a coupling sleeve; the motor is fixedly connected to the flange shaft and is located above the flange shaft; the coupling sleeve is fixedly connected to the output end of the motor and to the stirring blade, and is located between the motor and the stirring blade, and the coupling sleeve passes through the flange shaft.

4. The omnidirectional anti-collision system for agitator blades as described in claim 1, characterized in that, The support assembly includes a support base and a support arm; the support base is fixedly connected to the plurality of tension springs and to the radial joint bearing, and is located on the side of the plurality of tension springs away from the flange shaft; the support arm is fixedly connected to the support base and is located on the side of the support base away from the plurality of tension springs.

5. The omnidirectional anti-collision system for agitator blades as described in claim 4, characterized in that, The support base includes a mounting base and a base plate; the mounting base is fixedly connected to a plurality of tension springs and to the radial spherical bearing, and is located on the side of the plurality of tension springs away from the flange shaft; the base plate is fixedly connected to the mounting base and to the support arm, and is located between the mounting base and the support arm.

6. The omnidirectional anti-collision system for agitator blades as described in claim 5, characterized in that, The base plate includes a plate body and a plurality of screws; the plate body is located between the mounting base and the support arm; the plurality of screws are respectively threaded to the plate body and respectively threaded to the mounting base, and respectively pass through the plate body and the mounting base.

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