CN115538230A

CN115538230A - Transverse and longitudinal bidirectional single-rail device based on magnetorheological fluid

Info

Publication number: CN115538230A
Application number: CN202211243190.0A
Authority: CN
Inventors: 张露云; 罗一平; 谷泽瑞; 梁丹阳
Original assignee: Shanghai University of Engineering Science
Current assignee: Shanghai University of Engineering Science
Priority date: 2022-10-11
Filing date: 2022-10-11
Publication date: 2022-12-30

Abstract

The invention relates to a transverse and longitudinal bidirectional monorail device based on magnetorheological fluid, which comprises a longitudinal monorail (1), a transverse monorail (2), a clamping jaw (7) and a steering mechanism positioned at the crossing center of the longitudinal monorail (1) and the transverse monorail (2); the steering mechanism comprises a rotating base (2), a shell (5) filled with magnetorheological fluid (51), a controllable power supply (6) and a driving motor (8); the bottom of the rotating base (2) is provided with a rotating shaft; the shell (5) is positioned on the rotating shaft; a coil (4) is fixed on the outer side of the shell (5); the coil is connected with a controllable power supply (6); the driving motor (8) is connected with the rotating base (2); the clamping jaws (7) move on the longitudinal single rail (1), the transverse single rail (2) and the rotating base (2). Compared with the prior art, the steering mechanism has the advantages of improving the efficiency, stably and controllably steering, prolonging the service life, being simple in structure and the like.

Description

Transverse and longitudinal bidirectional monorail device based on magnetorheological fluid

Technical Field

The invention relates to the field of small transportation rails, in particular to a transverse and longitudinal bidirectional monorail device based on magnetorheological fluid.

Background

With the development of rail technology, there are small-sized rails and micro-rails in terms of logistics, machinery, medical treatment, etc. in addition to the rail transportation. Wherein, the double track can easily realize 90 degrees of turning, but most of the single tracks only run in one direction. Therefore, in express delivery letter sorting, machining, can not realize horizontal and fore-and-aft two-way movement based on the single track, though can realize horizontal and fore-and-aft two-way movement but occupation space is many based on the double track, the radian is too big can cause the space waste when turning to.

As a novel material, the magnetorheological fluid has the advantages of strong applicability, small mass, less power loss, higher frequency responsivity, capability of forming the most appropriate damping force by combining the system condition in the using process and the like, and is widely based on the fields of automobiles, building structures, ocean platforms, bridges and the like. Chinese patent CN205222488U discloses a single-rail steering machine capable of steering at right angle, which drives an electric push rod to move through a motor, and further drives a rotating rail to rotate, so as to realize the right-angle steering of single-rail transmission in a steering mechanism. Although the device for driving the steering by using the motor has the advantages of high precision and convenience in adjustment, when the steering mechanism is steered at a small angle and a high speed, irreversible damage to the steering mechanism caused by overhigh rotating speed during emergency speed reduction exists, and if the rotating speed is reduced, the abrasion of parts is reduced, so that the working efficiency is reduced.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provide a transverse and longitudinal bidirectional monorail device based on magnetorheological fluid, which can realize transverse and longitudinal bidirectional movement, utilizes the magnetorheological fluid in a steering mechanism to control the steering speed, and prolongs the service life of the mechanism.

The purpose of the invention can be realized by the following technical scheme:

a transverse and longitudinal bidirectional monorail device based on magnetorheological fluid comprises a longitudinal monorail, a transverse monorail, clamping jaws and a steering mechanism; the steering mechanism is positioned at the crossing center of the longitudinal single rail and the transverse single rail; the steering mechanism comprises a rotating base, a shell and magnetorheological fluid; the bottom of the rotating base is provided with a rotating shaft; the shell is positioned on the rotating shaft; the clamping jaws move on the longitudinal single rail, the transverse single rail and the rotating base, and when the clamping jaws move onto the rotating base plate, the rotating base plate rotates 90 degrees along the rotating shaft to realize the transverse and longitudinal movement of the clamping jaws; the magnetorheological fluid is positioned in the shell and used for controlling the rotating speed of the rotating chassis.

Furthermore, grooves are formed in the longitudinal single rail, the transverse single rail and the rotating base.

Furthermore, the groove corresponds to the jaw, and is used for enabling the jaw to move on the longitudinal single rail, the transverse single rail and the rotating base only along the direction of the groove.

Furthermore, lubricating oil is smeared in gaps among the clamping jaws, the longitudinal single rail, the rotating base and the transverse single rail.

Further, a sealing rubber ring for preventing the magnetorheological fluid from flowing out is arranged between the rotating shaft and the shell.

Further, the shell is fixed on the rotating shaft through welding.

Furthermore, a coil is fixed on the outer side of the shell; the coil is tightly wound on the shell in a spiral shape and is used for generating a magnetic field parallel to the direction of the rotating shaft.

Further, the device also comprises a controllable power supply; the coil provides current through the controllable power supply to generate a magnetic field parallel to the direction of the rotating shaft, so that the magnetorheological fluid generates anti-shearing stress perpendicular to the direction of the rotating shaft.

Further, the device also comprises a driving motor; the rotary base is controlled to rotate through the driving motor, and the jaw is switched between a longitudinal single rail and a transverse single rail.

Furthermore, the longitudinal single rail, the rotating base and the transverse single rail are positioned on the same horizontal plane and have consistent height.

Compared with the prior art, the invention has the following beneficial effects:

1. according to the invention, through the design of the rotating base, the single rail can also realize the operation steering in both transverse and longitudinal directions, and the steering base can be more stably steered through the magnetorheological fluid, so that the steering acceleration and deceleration can be controlled, the abrasion of the rotating base is reduced, and the service life of the rotating base is prolonged.

2. The steering base, the transverse single rail and the longitudinal single rail are provided with grooves which are well matched with the clamping jaws, so that the clamping jaws cannot move perpendicular to the plane of the rails in the running process, and the steering base, the transverse single rail and the longitudinal single rail have better safety performance. And because the steering base exists, the simultaneous operation of multiple clamping claws on the track can be ensured, and the working efficiency is improved.

3. Compared with a double rail, the single rail has the advantages of small occupied area, strong flexibility, light rail weight, simple structure, low cost and easiness in manufacturing.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the structure of the rotating base part of the present invention;

fig. 3 is a schematic structural view of the manner of matching the rotating base and the clamping jaws of the present invention.

The numbers in the figures indicate:

1. the device comprises a longitudinal single rail, 2 a rotating base, 3 a transverse single rail, 4 a coil, 5 a shell, 51 magnetorheological fluid, 6 a controllable power supply, 7 a clamping jaw, 8 and a driving motor.

Detailed Description

The invention is described in detail below with reference to the figures and the specific embodiments. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.

Examples

As shown in fig. 1, 2 and 3, a transverse and longitudinal bidirectional monorail device based on magnetorheological fluid comprises a longitudinal monorail 1, a transverse monorail 3 and a steering mechanism; the steering mechanism is positioned at the crossing center of the longitudinal single rail 1 and the transverse single rail 2; the steering mechanism comprises a rotating base 2, a shell 5, magnetorheological fluid 51, a controllable power supply 6 and a driving motor 8; the bottom of the rotating base 2 is provided with a rotating shaft; a coil 4 is fixed on the outer side of the shell (5); the shell 5 is welded on the rotating shaft, so that the shell 5 and the coil 4 do not rotate along with the rotation of the rotating base 2; the magnetorheological fluid 51 is positioned in the shell; a sealing rubber ring is arranged between the rotating shaft and the shell 5 to prevent the magnetorheological fluid 51 from flowing out; the coil is connected with a controllable power supply 6; the driving motor 8 is connected with the rotating base 2; the clamping jaws 7 move on the longitudinal single rail 1, the transverse single rail 2 and the rotating base 2; the longitudinal single rail 1, the rotating base 2 and the transverse single rail 3 are positioned on the same horizontal plane and have the same height.

As shown in fig. 1 and 3, grooves are formed in the longitudinal single rail 1, the transverse single rail 3 and the rotating base 2, and the shapes of the grooves are matched with those of the protrusions on the clamping jaws 7, so that the clamping jaws 7 can only move in a plane along the grooves, and cannot move in a direction perpendicular to the plane of the rails, and the safety is better. And in the gaps between the clamping jaw 7 and the longitudinal monorail 1, between the rotating base 2 and between the clamping jaw 7 and the transverse monorail 3, lubricating oil is regularly smeared, and the friction force between the rails and the clamping jaw 7 can be reduced through precision machining of the contact surface.

When the claw 7 moves from left to right from the transverse single rail 3 to the position of the rotating base 2 at the intersection of the longitudinal single rail 1 and the transverse single rail 3, the rotating base 2 controls the next running direction of the claw 7. The target location of the claw 7 is above the longitudinal monorail 1, the driving motor 8 controls the rotating base 2 to rotate 90 degrees clockwise, and the claw 7 moves upwards along the longitudinal monorail 1, so that the transformation of the transverse and longitudinal movement directions is realized, the monorail can also realize the operation in the transverse and longitudinal directions, and the working efficiency is improved on the basis of saving space. And because the steering base 2 exists, a plurality of clamping jaws 7 can be ensured to run simultaneously on the longitudinal monorail 1 and the transverse monorail 3, and the working efficiency is further improved.

As shown in fig. 2, when the rotating base 2 rotates, the controllable power supply 6 externally connected to the coil 4 generates current to supply current to the coil 4 to generate a magnetic field. Since the coil 4 is tightly wound on the housing 5 in a spiral shape, the direction of the generated magnetic field is parallel to the direction of the rotating shaft, so that the magnetorheological fluid 51 generates a shear stress perpendicular to the direction of the rotating shaft. Control the rotational speed when rotating base 2 and rotating, prevent that the rotational speed from causing irreversible damage to rotating base 2 at the excessive speed, make steering mechanism more reliable, increased steering mechanism's life.

The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.

Claims

1. A transverse and longitudinal bidirectional monorail device based on magnetorheological fluid is characterized by comprising a longitudinal monorail (1), a transverse monorail (2), clamping jaws (7) and a steering mechanism; the steering mechanism is positioned at the crossing center of the longitudinal single rail (1) and the transverse single rail (2); the steering mechanism comprises a rotating base (2), a shell (5) and magnetorheological fluid (51); the bottom of the rotating base (2) is provided with a rotating shaft; the shell (5) is positioned on the rotating shaft; the clamping jaws (7) move on the longitudinal single rail (1), the transverse single rail (2) and the rotating base (2), and when the clamping jaws (7) move onto the rotating base plate (2), the rotating base plate (2) rotates for 90 degrees along the rotating shaft to realize the transverse and longitudinal movement of the clamping jaws (7); the magnetorheological fluid (51) is positioned in the shell and used for controlling the rotating speed of the rotating chassis (2).

2. The transverse and longitudinal bidirectional monorail device based on magnetorheological fluid according to claim 1, wherein grooves are formed in the longitudinal monorail track (1), the transverse monorail track (3) and the rotating base (2).

3. The magnetorheological fluid-based transverse and longitudinal bidirectional monorail device according to claim 2, wherein the grooves correspond to the claws (7) so that the claws (7) can only move on the longitudinal monorail (1), the transverse monorail (2) and the rotating base (2) along the groove direction.

4. The magnetorheological fluid-based transverse and longitudinal bidirectional monorail device according to claim 1, wherein lubricating oil is smeared in gaps among the clamping jaws (7), the longitudinal monorail (1), the rotating base (2) and the transverse monorail (3).

5. The device is characterized in that a sealing rubber ring for preventing the magnetorheological fluid (51) from flowing out is arranged between the rotating shaft and the shell (5).

6. A device according to claim 1, characterised in that said housing (5) is fixed to the rotating shaft by welding.

7. The device is characterized in that a coil (4) is fixed outside the shell (5); the coil (4) is tightly wound on the shell (5) in a spiral shape and is used for generating a magnetic field parallel to the direction of the rotating shaft.

8. The magnetorheological fluid-based transverse and longitudinal bidirectional monorail device according to claim 7, wherein the device further comprises a controllable power supply (6); the coil (4) provides current through the controllable power supply (6) to generate a magnetic field parallel to the direction of the rotating shaft, so that the magnetorheological fluid (51) generates anti-shearing stress vertical to the direction of the rotating shaft.

9. A device according to claim 1, characterized in that it further comprises a driving motor (8); the rotary base (2) is controlled to rotate through the driving motor (8), and the jaw (7) is switched between the longitudinal single rail (1) and the transverse single rail (3).

10. The transverse and longitudinal bidirectional monorail device based on magnetorheological fluid according to claim 1, wherein the longitudinal monorail track (1), the rotating base (2) and the transverse monorail track (3) are positioned on the same horizontal plane and have the same height.