CN111792556A

CN111792556A - Locking mechanism of horizontal jack based on magnetorheological fluid

Info

Publication number: CN111792556A
Application number: CN202010683933.0A
Authority: CN
Inventors: 周德军
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-07-16
Filing date: 2020-07-16
Publication date: 2020-10-20

Abstract

The invention relates to the technical field of hydraulic jack equipment and discloses a magnetorheological fluid-based horizontal jack locking mechanism. The locking mechanism of the horizontal jack based on the magnetorheological fluid has the advantages that the arrangement of the internal structure of the sliding support block enables the sliding support block to smoothly slide and rub between the inner walls of the support ring block to support the support ring block and parts on the support ring block, meanwhile, the circular through hole is formed in the sliding support block, so that the magnetorheological fluid filled in the support ring and the support main shaft can rotate on the inner walls of the support ring block at will under the characteristic that the magnetorheological fluid is not added with a magnetic field to form low viscosity, the influence of large resistance cannot be caused, and the smoothness of the horizontal jack in lifting or under loading is high.

Description

Locking mechanism of horizontal jack based on magnetorheological fluid

Technical Field

The invention relates to the technical field of hydraulic jack equipment, in particular to a magnetorheological fluid-based locking mechanism of a horizontal jack.

Background

The horizontal jack is used as a high-load and high-strength jacking device, and can lift a heavy load in a short stroke, so that the horizontal jack is widely applied to maintenance of load-bearing supports on a load-bearing vehicle or mobile equipment, but the pressure of the jack during jacking the load is from a hydraulic element, the duration of the maintenance work of the load-bearing supports on the load-bearing vehicle or the mobile equipment is not easily controlled by an operator, and sometimes the pressure can last for a long time, so that the hydraulic element in the horizontal jack is under a huge load-bearing load for a long time, a plunger and a sealing element in the horizontal jack are easily damaged, the horizontal jack slides downwards in the process of jacking the load, the pressure in the hydraulic element is increased under a long-time pressure-bearing load, and the stability is poor, even if the cylinder is exploded to lose the bearing effect, the load after the support is lost suddenly drops, and a great safety hazard exists for related workers and equipment.

Disclosure of Invention

Technical problem to be solved

The invention provides a locking mechanism of a horizontal jack based on magnetorheological fluid, which has the advantages of capability of locking a support piece to reduce the pressure of a hydraulic element when bearing load, capability of bearing heavier load for a long time, high stability and high safety, solves the problems that the pressure when the jack lifts the load is from the hydraulic element, the duration of the load bearing support maintenance work of a load-carrying vehicle or mobile equipment is not easy to be controlled by an operator, and sometimes can last for a long period of time, so that the hydraulic element in the horizontal jack is under huge load bearing load for a long time, the plunger and the sealing element in the horizontal jack are easily damaged, the horizontal jack slides downwards in the process of lifting the load, and the pressure in the hydraulic element is increased under long-time pressure bearing load, the stability becomes worse, even the cylinder is exploded to lose the bearing effect, and then the load after losing the support suddenly drops, and the problem of huge potential safety hazard exists for related staff and equipment.

(II) technical scheme

The invention provides the following technical scheme: the utility model provides a locking mechanism of horizontal jack based on magnetorheological suspensions, includes the horizontal jack main part, the middle part of horizontal jack main part inner chamber is equipped with the lifting truss, the inside of lifting truss is equipped with rotatory sleeve, the equal movable sleeve in both sides of rotatory sleeve inner chamber is equipped with the permanent magnetism and turns, the inside fixed sleeve that the permanent magnetism turned is equipped with the support ring, and one side fixed mounting at the back that the permanent magnetism turned has a control handle, the top and the bottom of supporting the ring all are equipped with shielding baffle, the fixed cover in inside of supporting the ring is equipped with the support ring piece, the inside movable sleeve of support ring piece is equipped with the slip supporting shoe, and the opposite side fixed mounting of slip supporting shoe has the support main shaft, the both ends of support main shaft respectively with the inside fixed connection of horizontal jack main.

Preferably, magnetorheological fluid is filled in an inner cavity formed between the support ring and the support spindle.

Preferably, the included angles between the permanent magnet rotating bodies and the two ends of the shielding baffle plate are 90 degrees, and the two groups of permanent magnet rotating bodies and the two groups of shielding baffle plates are symmetrically arranged.

Preferably, the top end of the sliding support block is of an arc structure with the same radian as the inner wall of the support ring block, and a circular through hole which is communicated from left to right is formed in the sliding support block.

Preferably, the arrangement position of the rotating sleeve is located at the bottom of the rotating sleeve and occupies one third of the total length.

Preferably, the number of the support ring blocks is set to six groups and the number of the sliding support blocks is set to eight groups, and at least three groups of the sliding support blocks can be in contact with the inner wall of the support ring block when the sliding support blocks rotate to any position.

(III) advantageous effects

The invention has the following beneficial effects:

1. the locking mechanism of the horizontal jack based on the magnetorheological fluid controls the state of the magnetorheological fluid by utilizing the on-off of the magnetic field of the permanent magnet rotator by the shielding baffle for the magnetorheological fluid between the supporting ring and the supporting main shaft and the arrangement of the permanent magnet rotator, the supporting ring and the upper shielding baffle, thereby controlling the relative sliding state between the sliding support block and the support ring block, providing strong and powerful blocking force for the lifting truss to prevent the lifting truss from rotating under the pressure of load, further effectively relieving the pressure on the hydraulic element, so that when the horizontal jack bears the load for a long time, will not damage the plunger and the sealing element inside, and will not bear high pressure for a long time, the phenomenon that the cylinder is exploded due to the increase of the internal pressure intensity and the load suddenly drops is caused, and the stability and the safety of the horizontal jack are effectively improved.

2. The locking mechanism of the horizontal jack based on the magnetorheological fluid has the advantages that the arrangement of the internal structure of the sliding support block enables the sliding support block to smoothly slide and rub between the inner walls of the support ring block to support the support ring block and parts on the support ring block, meanwhile, the circular through hole is formed in the sliding support block, so that the magnetorheological fluid filled in the support ring and the support main shaft can rotate on the inner walls of the support ring block at will under the characteristic that the magnetorheological fluid is not added with a magnetic field to form low viscosity, the influence of large resistance cannot be caused, and the smoothness of the horizontal jack in lifting or under loading is high.

Drawings

FIG. 1 is a schematic structural diagram of a horizontal jack body according to the present invention;

FIG. 2 is a schematic view of the internal structure of the rotating sleeve of the present invention;

FIG. 3 is a side view of a rotating sleeve of the present invention;

FIG. 4 is a schematic representation of the structure of the present invention prior to locking;

fig. 5 is a schematic diagram of the structure of the present invention after locking.

In the figure: 1. a horizontal jack main body; 2. lifting the truss; 3. rotating the sleeve; 4. a permanent magnet rotator; 5. a support ring; 6. a control handle; 7. a shielding baffle; 8. a support ring block; 9. a sliding support block; 10. the main shaft is supported.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, a locking mechanism of a horizontal jack based on magnetorheological fluid includes a horizontal jack main body 1, a lifting truss 2 is disposed in the middle of an inner cavity of the horizontal jack main body 1, a rotating sleeve 3 is disposed inside the lifting truss 2, permanent magnetic rotors 4 are movably sleeved on both sides of the inner cavity of the rotating sleeve 3, a supporting ring 5 is fixedly sleeved inside the permanent magnetic rotors 4, a control handle 6 is fixedly mounted on one side of the back of the permanent magnetic rotor 4, shielding baffles 7 are disposed on the top and bottom ends of the supporting ring 5, a supporting ring block 8 is fixedly sleeved inside the supporting ring 5, a sliding supporting block 9 is movably sleeved inside the supporting ring block 8, a supporting main shaft 10 is fixedly mounted on the other side of the sliding supporting block 9, and both ends of the supporting main shaft 10 are respectively and fixedly connected with the inside of the horizontal jack main body 1.

In the technical scheme, magnetorheological fluid is filled in an inner cavity formed between the support ring 5 and the support main shaft 10.

The magnetorheological fluid is a suspension formed by mixing micro soft magnetic particles with high magnetic conductivity and low magnetic hysteresis and non-magnetic conductive liquid, and the magnetorheological fluid has the characteristic of low viscosity under the condition of zero magnetic field; under the action of a strong magnetic field, the locking mechanism has the characteristics of high viscosity and low fluidity, so that the characteristic state of the locking mechanism is controlled by adding the magnetic field by utilizing the characteristics of the locking mechanism under the magnetic field, and strong and powerful blocking force is provided for the locking mechanism so as to reduce the bearing pressure of a hydraulic element.

In the technical scheme, included angles between the permanent magnet rotating bodies 4 and the two ends of the shielding baffle plates 7 are 90 degrees, and the two groups of permanent magnet rotating bodies 4 and the two groups of shielding baffle plates 7 are symmetrically arranged respectively.

Wherein, to arranging the setting of position between permanent magnet rotor 4 and shielding baffle 7 to utilize permanent magnet rotor 4 to exert magnetic field in order to control its state to magnetorheological suspensions wherein, make its locking that can be timely when bearing load uplift truss 2, with the pressure that reduces hydraulic component received, even when hydraulic component appears damaging or blow out the jar, can not lead to the load of jacking to appear the problem of falling suddenly.

In this technical scheme, the top of slip supporting shoe 9 establishes to the arc structure the same with the inner wall radian of support ring piece 8, and is equipped with the circular through-hole that link up about the inside of slip supporting shoe 9.

The arrangement of the internal structure of the sliding support block 9 enables the sliding support block to smoothly slide and rub between the inner walls of the support ring block 8 to support the support ring block 8 and parts thereon, and meanwhile, the circular through hole is formed in the sliding support block, so that the magnetorheological fluid filled in the sliding support block 9 can rotate on the inner walls of the sliding support block at will under the action of no magnetic field, and the sliding support block is not influenced by large resistance.

In this solution, the position of the rotating sleeve 3 is located at the bottom of the rotating sleeve and occupies one third of the total length.

The arrangement position of the rotating sleeve 3 is convenient for driving the rotating sleeve to rotate by using a hydraulic element, and provides stable and effective supporting force for a load-carrying vehicle or mobile equipment when the rotating sleeve bears the load.

In the technical scheme, the number of the supporting ring blocks 8 is set to six groups and the number of the sliding supporting blocks 9 is set to eight groups, and at least three groups of sliding supporting blocks 9 are contacted with the inner wall of the supporting ring blocks 8 when the sliding supporting blocks 9 rotate to any position.

The number of the supporting ring blocks 8 and the sliding supporting blocks 9 and the arrangement of the supporting main shaft 10 in any rotating angle enable the supporting main shaft 10 to provide stable and effective rotating supporting force for the supporting ring blocks 8 and parts on the supporting ring blocks through the sliding supporting blocks 9, the stability of the lifting truss 2 in rotation along with a hydraulic element is high, the phenomenon of circumferential jumping cannot occur, and abrasion of all parts in the self-locking mechanism in the rotating action process is effectively reduced.

The use method and the working principle of the embodiment are as follows:

referring to fig. 4, when the horizontal jack lifts a load, the control handle 6 is always located at an upper position, so that the positions of the permanent magnet rotor 4 and the shielding baffle 7 on the supporting ring 5 are staggered, so that the magnetic field in the permanent magnet rotor 4 is shielded by the shielding baffle 7 on the supporting ring 5, and accordingly the magnetorheological fluid between the supporting ring 5 and the supporting spindle 10 is in a low viscosity characteristic, and in the process of lifting the truss 2 by using a hydraulic element or lifting the truss 2 below, the supporting ring block 8 and the sliding support block 9 can relatively slide under the magnetorheological fluid in a low viscosity state, and the magnetorheological fluid can pass through the circular through hole in the sliding support block 9, so as to ensure that the sliding support block 9 can rotate along the inner wall of the supporting ring block 8 along with the lifting of the truss 2;

referring to fig. 5, when the horizontal jack lifts a load, the control handle 6 is moved to a lower position, so that the positions of the permanent magnet rotator 4 and the shielding baffle 7 on the supporting ring 5 coincide with each other, and the magnetic field in the permanent magnet rotator 4 cannot be shielded by the shielding baffle 7 on the supporting ring 5, so that the magnetorheological fluid between the supporting ring 5 and the supporting spindle 10 is in a high-viscosity solid-like state, and further the supporting ring block 8 and the sliding support block 9 cannot slide relatively under the magnetorheological fluid in the solid-like state to lock and lift the truss 2, thereby effectively reducing the load pressure on the hydraulic element.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a locking mechanism of horizontal jack based on magnetorheological suspensions, includes horizontal jack main part (1), its characterized in that: the middle part of the inner cavity of the horizontal jack main body (1) is provided with a lifting truss (2), a rotary sleeve (3) is arranged in the lifting truss (2), permanent magnetic rotating bodies (4) are movably sleeved on two sides of the inner cavity of the rotary sleeve (3), a supporting circular ring (5) is fixedly sleeved in each permanent magnetic rotating body (4), and one side of the back of the permanent magnet rotating body (4) is fixedly provided with a control handle (6), the top end and the bottom end of the supporting circular ring (5) are both provided with a shielding baffle (7), a supporting ring block (8) is fixedly sleeved in the supporting ring (5), a sliding supporting block (9) is movably sleeved in the supporting ring block (8), and the other side of the sliding supporting block (9) is fixedly provided with a supporting main shaft (10), and two ends of the supporting main shaft (10) are respectively fixedly connected with the inside of the horizontal jack main body (1).

2. The magnetorheological fluid-based horizontal jack locking mechanism according to claim 1, wherein: magnetorheological fluid is filled in an inner cavity formed between the supporting circular ring (5) and the supporting main shaft (10).

3. The magnetorheological fluid-based horizontal jack locking mechanism according to claim 1, wherein: the included angles between the two ends of the permanent magnet rotating bodies (4) and the two ends of the shielding baffle plates (7) are 90 degrees, and the two groups of permanent magnet rotating bodies (4) and the two groups of shielding baffle plates (7) are symmetrically arranged respectively.

4. The magnetorheological fluid-based horizontal jack locking mechanism according to claim 1, wherein: the top end of the sliding support block (9) is of an arc structure with the same radian as the inner wall of the support ring block (8), and a circular through hole which is communicated from left to right is formed in the sliding support block (9).

5. The magnetorheological fluid-based horizontal jack locking mechanism according to claim 1, wherein: the arrangement position of the rotating sleeve (3) is positioned at the bottom of the rotating sleeve and occupies one third of the total length.

6. The magnetorheological fluid-based horizontal jack locking mechanism according to claim 1, wherein: the number of the supporting ring blocks (8) is set to six groups, the number of the sliding supporting blocks (9) is set to eight groups, and at least three groups of sliding supporting blocks (9) can be in contact with the inner wall of the supporting ring blocks (8) when the sliding supporting blocks (9) rotate to any position.