CN111320066A - Electromagnetic hoisting disc capable of reducing workpiece shaking - Google Patents

Abstract

The invention discloses an electromagnetic hoisting plate for reducing the shaking of a workpiece, which relates to the technical field of hoisting devices. A lifting plate is slidably connected to the bottom of the spring, the two ends of the tension spring are fixedly connected to the bottom of the lifting platform and the top of the lifting plate respectively, and the outer peripheral side of the sliding column is fixedly connected with a first conductive strip in the vertical direction. A sliding block is fixedly connected to the inner side of the middle of the tension spring. When the workpiece within a certain scale is transported, if the workpiece mass is small, the internal current liquid can be solidified after the current liquid capsule is energized to clamp and transport the workpiece. When the workpiece is supported and wrapped by the solidified current sac, there will be no shaking during transportation, and the workpiece composed of non-ferromagnetic materials can be transported and shaken. In this state, there is no need to energize and start multiple electromagnetic columns. energy consumption.

Description

An electromagnetic lifting plate for reducing workpiece shaking

technical field

The invention relates to the technical field of lifting devices, in particular to an electromagnetic lifting tray for reducing the shaking of workpieces.

Background technique

In the process of processing workpieces in the factory workshop, it is generally necessary to use a lifting and handling device to transport the workpieces to be processed to different processing stations. It affects the efficiency of handling workpieces, and may cause damage and injury to surrounding components and personnel; and when handling workpieces in the workshop, generally one process only handles workpieces of similar scale, and a larger lifting device is not required at this time to fully meet different requirements. Handling requirements for large-scale workpieces.

SUMMARY OF THE INVENTION

The present invention proposes an electromagnetic lifting plate for reducing the shaking of the workpiece, which aims to solve the problem that the workpiece is prone to shaking or even falling along with the transportation movement in the traditional technology.

In order to achieve the above object, the present invention adopts the following technical solutions:

An electromagnetic lifting plate for reducing the shaking of a workpiece comprises a lifting seat, a sliding column is fixedly connected in the bottom of the lifting seat, a tension spring is sleeved on the sliding column, and a lifting plate is slidably connected at the bottom. The two ends of the tension spring are respectively fixedly connected to the bottom of the lifting base and the top of the lifting plate, the outer peripheral side of the sliding column is fixedly connected with a first conductive strip in the vertical direction, and the inner side of the middle of the tension spring is fixedly connected with a sliding block, so One end of the sliding block away from the tension spring is rotatably connected with a rotating contact, the outer peripheral side of the rotating contact is perpendicular to its own axis and is fixedly connected with a baffle plate, one side of the baffle is abutting on the sliding block, and the rotating contact A conductive sheet is fixedly connected to one side of the outer peripheral side perpendicular to the direction of the baffle plate, and the conductive sheet is in electrical contact with the first conductive strip;

The bottom of the lifting pan is fixedly connected with a plurality of electromagnetic columns, the bottom of the lifting pan is fixedly connected with a water bladder, the water bladder is filled with water, and the electrorheological liquid bladder is fixedly connected at the bottom of the water bladder, so the The electrorheological fluid bag is filled with electrorheological fluid, a plurality of magnetic strips are fixedly connected to the bottom surface of the electrorheological fluid bag, a plurality of guide posts are fixedly connected to the bottom peripheral side of the lifting plate perpendicular to the bottom surface, and a plurality of The guide posts are all provided with guide grooves, the inner side of the guide groove is fixedly connected with a second conductive strip, the side of the guide groove away from the second conductive strip is rotatably connected with a plurality of magnetic needles, and one end of the plurality of magnetic needles is fixedly connected with a plurality of magnetic needles. a conductive contact, the conductive contact is electrically connected to the second conductive strip;

A power supply is installed in the lifting tray, and a driving circuit is electrically connected to the power supply, and the driving circuit is electrically connected to the first conductive strip, the plurality of electromagnetic columns and the plurality of second conductive strips.

Preferably, the conductive sheet is initially located on the side of the rotary contact away from the first conductive strip, and the baffle is initially located at the bottom of the rotary contact and the side away from the conductive sheet is abutted on the sliding block.

Preferably, a plurality of the electromagnetic columns are evenly distributed on the lifting tray.

Preferably, a plurality of the magnetic strips are distributed on the bottom of the electrorheological fluid capsule in a circular array, and the magnetic south poles all point to the center of the bottom of the electrorheological fluid capsule.

Preferably, a plurality of the guide posts are evenly distributed on the circumference of the bottom of the hoisting plate, a plurality of magnetic needles are evenly spaced on the guide groove and the rotating plane passes through the central axis of the hoisting plate, and the conductive contacts are all located on the magnetic needle magnetic field. on Antarctica.

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

The present invention is aimed at workpieces of similar scale and with a maximum diameter slightly smaller than the diameter of the electrorheological fluid capsule connected on the lifting plate, and the workpiece is a workpiece composed of a ferromagnetic substance or a combined workpiece of a ferromagnetic substance and other substances. When the workpiece is transported;

First, the lifting plate moves down until it contacts the workpiece to be transported, and the power is turned on. At this time, the driving circuit only conducts multiple electromagnetic columns in one driving cycle. The workpiece squeezes the electrorheological fluid bag and approaches the bottom of the lifting pan;

The bottom of the electrorheological liquid capsule is squeezed and extends to the bottom of the workpiece. The magnetic south pole direction of the magnetic stripe connected to this part of the electrorheological liquid capsule changes to be away from the center of the bottom of the electrorheological liquid capsule, and rotates in the guide groove on the guide post close to it. The magnetic north pole of the connected magnetic needle is attracted by the magnetic south pole of the magnetic strip and rotates, and the conductive contact connected to the magnetic south pole of the magnetic needle is in electrical contact with the second conductive strip in the guide groove, so that the driving circuit turns on multiple electromagnetic fields in one driving cycle. The column and the electrorheological capsule, and the conduction ratio of the electrorheological capsule in the driving cycle gradually increases until the conduction ratio is 100%. At this time, the workpiece is gradually wrapped by the electrorheological capsule until only the electrorheological capsule is covered. Conduction to facilitate the clamping and support of the workpiece after the internal current fluid solidifies in the electrorheological fluid capsule after being energized;

If the electrorheological liquid capsule solidifies enough to clamp the workpiece after being energized, the handling work is completed in this state, and the workpiece is wrapped by the solidified electrorheological liquid capsule to prevent the workpiece from shaking. Workpieces made of non-ferromagnetic materials are handled and shaken;

If the electrorheological fluid capsule is not enough to clamp the workpiece after being energized and solidified, the workpiece will move downward under the action of gravity. At this time, the tension spring is reduced by the total tension of the electro-magnetic disk and the workpiece, the tension spring shrinks, and the slider on the tension spring The rotating contact on the rotating contact moves upward, and the rotating contact is rubbed by the first conductive strip and rotates, so that the conductive sheet on the rotating contact turns out and is in electrical contact with the first conductive strip, so that the driving circuit conducts at the same time in one driving cycle. Multiple electromagnetic columns and electro-rheological liquid sacs are connected. At this time, multiple electrified electromagnetic cylinders form a main attraction to the workpiece, and the electro-solidified electro-rheological liquid sacs form support for the peripheral side of the workpiece to prevent the workpiece from shaking.

To sum up, when handling a workpiece within a certain scale, if the quality of the workpiece is small, the internal current liquid can be solidified to clamp and transport the workpiece after the current liquid capsule is energized. At this time, the workpiece is subjected to the solidified current change. The liquid bag supports the package and will not shake during transportation, and can handle and prevent shaking of the workpiece composed of non-ferromagnetic materials. In this state, there is no need to energize multiple electromagnetic columns to reduce energy consumption; if the quality of the workpiece is relatively high The large, electrified electromagnetic column forms the main attraction to the workpiece, and the electrified and solidified electrorheological fluid capsule forms a support for the peripheral side of the workpiece, preventing the workpiece from shaking when the workpiece is transported.

Description of drawings

1 is a schematic structural diagram of a non-working state of an electromagnetic lifting plate that reduces the shaking of a workpiece proposed by the present invention;

FIG. 2 is a schematic cross-sectional view of A-A in FIG. 1 of an electromagnetic lifting plate that reduces the shaking of a workpiece proposed by the present invention;

FIG. 3 is an enlarged schematic diagram of part D in FIG. 2 of an electromagnetic lifting plate for reducing workpiece shaking proposed by the present invention;

FIG. 4 is an enlarged schematic diagram of part B in FIG. 1 of a kind of electromagnetic lifting plate that reduces the shaking of the workpiece proposed by the present invention;

FIG. 5 is a schematic bottom view of the electromagnetic lifting plate in FIG. 1 for reducing the shaking of the workpiece according to the present invention;

FIG. 6 is a schematic structural diagram of the working state of an electromagnetic lifting pan for reducing the shaking of a workpiece proposed by the present invention;

FIG. 7 is an enlarged schematic view of part E in FIG. 6 of an electromagnetic lifting plate for reducing workpiece shaking proposed by the present invention.

In the picture: 1 lifting base, 2 sliding column, 21 first conductive strip, 3 tension spring, 31 sliding block, 32 rotating contact, 321 baffle plate, 322 conductive sheet, 4 electro-magnetic disk, 5 power supply, 51 driving circuit, 6 electromagnetic columns, 7 water bladders, 8 electrorheological fluid bladders, 81 magnetic strips, 9 guide posts, 91 guide grooves, 92 second conductive bars, 93 magnetic needles, 931 conductive contacts.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments.

Referring to Figures 1-7, an electromagnetic lifting plate for reducing the shaking of the workpiece includes a lifting base 1, a sliding column 2 is fixedly connected to the bottom of the lifting base 1, and a tension spring 3 is sleeved on the sliding column 2 and the bottom slides An electro-magnetic disk 4 is connected, and both ends of the tension spring 3 are fixedly connected to the bottom of the lifting base 1 and the top of the electro-magnetic disk 4 respectively.

A first conductive strip 21 is fixed vertically on the outer peripheral side of the sliding column 2 , a sliding block 31 is fixedly connected to the inner side of the middle of the tension spring 3 , and a rotating contact 32 is rotatably connected to one end of the sliding block 31 away from the tension spring 3 , and the outer circumference of the rotating contact 32 A baffle 321 is fixedly connected to the side perpendicular to its own axial direction. One side of the baffle 321 abuts on the sliding block 31. The outer peripheral side of the rotating contact 32 is fixedly connected to one side perpendicular to the direction of the baffle 321, and a conductive sheet 322 is fixedly connected. in electrical contact with the first conductive strip 21,

The conductive sheet 322 is initially located on the side of the rotary contact 32 away from the first conductive strip 21 , and the baffle 321 is initially located at the bottom of the rotary contact 32 and abuts on the sliding block 31 on the side away from the conductive sheet 322 . When extending, that is, when the electromagnet 4 pulls up the workpiece, the rotating contact 32 slides on the first conductive strip 21 with the side without the conductive sheet 322 under the blocking of the baffle 321, and when the tension spring 3 contracts, the rotating contact 32 After the rotation, the conductive sheet 322 is electrically connected to the first conductive strip 21 .

A plurality of electromagnetic columns 6 are fixedly connected in the bottom of the electromagnetic disk 4, and the plurality of electromagnetic columns 6 are evenly distributed on the electromagnetic disk 4, so that the magnetic attraction force is evenly distributed.

The bottom of the electro-magnetic disk 4 is fixedly connected with a water bag 7, the water bag 7 is filled with water, and the bottom of the water bag 7 is fixedly connected with an electrorheological fluid bag 8, the water bag 7 forms a certain pressure on the electrorheological fluid bag 8, and provides an electrorheological fluid. The capsule 8 has enough deformation space.

The electrorheological fluid bag 8 contains electrorheological fluid. The electrorheological fluid is a kind of suspension under normal conditions, which can undergo liquid-solid transformation under the action of an electric field.

A plurality of magnetic strips 81 are fixedly connected to the bottom surface of the electrorheological liquid capsule 8 . The magnetic strips 81 are distributed on the bottom of the electrorheological liquid capsule 8 in a circular array, and the magnetic south poles all point to the center of the bottom of the electrorheological liquid capsule 8 .

The electro-magnetic disk 4 is fixedly connected with a plurality of guide posts 9 perpendicular to the bottom peripheral side of the bottom surface. A guide slot 91 is opened in the plurality of guide posts 9. The inner side of the guide slot 91 is fixedly connected with a second conductive strip 92, and the guide slot 91 is away from the second One side of the conductive strip 92 is rotatably connected with a plurality of magnetic needles 93 , and one end of the plurality of magnetic needles 93 is fixedly connected with a conductive contact 931 , and the conductive contact 931 is electrically connected with the second conductive strip 92 .

A plurality of guide posts 9 are evenly distributed on the bottom peripheral side of the electromagnetic disk 4, a plurality of magnetic needles 93 are evenly spaced on the guide groove 91 and are located on the rotation plane passing through the center axis of the electromagnetic disk 4, and the conductive contacts 931 are all located on the magnetic south pole of the magnetic needle 93. , the magnetic needle 93 is magnetically attracted by the magnetic strip 81, and the magnetic south pole of the magnetic needle 93 points to the electro-rheological fluid bag 8 in the initial state. The magnetic south pole is away from the center of the electrorheological fluid capsule 8 . At this time, the magnetic south pole of the magnetic needle 93 is repelled and then rotates so that the conductive contact 931 and the second conductive strip 92 are electrically connected.

A power supply 5 is installed in the electro-magnetic disk 4 . The power supply 5 is electrically connected with a driving circuit 51 , and the driving circuit 51 is electrically connected with the first conductive strips 21 , the plurality of electromagnetic columns 6 and the plurality of second conductive strips 92 .

The drive circuit 51 includes three drive states: an initial state, a half-load state and a full-load state. After the power supply 5 is started, the drive circuit 51 is in the initial state, that is, only a plurality of electromagnetic columns 6 are turned on in one drive cycle;

After the conductive contacts 931 and the second conductive strips 92 are electrically connected, the driving circuit 51 is turned into a half-load state, that is, the plurality of electromagnetic columns 6 and the electro-rheological fluid capsules 8 are turned on in sequence within one driving cycle, and the electro-rheological During the driving cycle, the conduction ratio of the sac 8 gradually increases until the conduction ratio is 100%;

After the conductive sheet 322 and the first conductive strips 21 are electrically connected, the driving circuit 51 is turned into a full-load state, that is, the plurality of electromagnetic columns 6 and the electrorheological fluid capsules 8 are simultaneously turned on in one driving cycle.

The principle of the present invention is now described as follows:

The present invention is aimed at a workpiece with a similar scale and a maximum diameter slightly smaller than the diameter of the electrorheological fluid capsule 8 connected to the top of the electromagnetic disk 4, and the workpiece is a workpiece composed of a ferromagnetic substance or a combined workpiece of a ferromagnetic substance and other substances. When the workpiece is transported;

First, the lifting base 1 and the electromagnet 4 are moved downward until they contact the workpiece to be transported, and the power supply 5 is activated. At this time, the drive circuit 51 is in the initial state, that is, only a plurality of electromagnetic columns 6 are turned on in one drive cycle, and a plurality of electromagnetic columns 6 are turned on. After the electromagnetic column 6 conducts electricity, a magnetic field is generated and a magnetic attraction force is generated on the workpiece, and the workpiece squeezes the electrorheological fluid capsule 8 and approaches the bottom of the electromagnetic disk 4;

After the bottom of the electrorheological fluid bag 8 is squeezed by the workpiece and partially extended to the bottom of the workpiece under the support of the water bag 7 , the magnetic south pole direction of the magnetic strip 81 connected to the electrorheological fluid bag 8 is changed to be away from the bottom of the electrorheological fluid bag 8 . At the center, the magnetic north pole of the magnetic needle 93, which is rotatably connected in the guide groove 91 on the guide post 9, is attracted by the magnetic south pole of the magnetic strip 81 and rotates. The two conductive strips 92 are in electrical contact, so that the driving circuit 51 changes from the initial state to the half-load state;

The driving circuit 51 turns on the plurality of electromagnetic columns 6 and the electrorheological liquid sacs 8 in turn in one driving cycle in a half-load state, and the conduction ratio of the electrorheological liquid sacs 8 gradually increases during the driving cycle until the conduction ratio is 100%. At this time, the workpiece is gradually wrapped by the electrorheological fluid capsule 8 until only the electrorheological fluid capsule 8 is turned on. Compared with the drive circuit 51 at the beginning of the transition, the workpiece is wrapped by more electrorheological fluid capsules 8, which is convenient for the electrorheological fluid capsule. 8. Clamping and supporting the workpiece after the internal current liquid solidifies after power-on;

If the electrorheological liquid capsule 8 is solidified enough to clamp the workpiece after being energized, the handling work is completed in this state, and the workpiece is wrapped by the solidified electrorheological liquid capsule 8 to prevent the workpiece from shaking. The workpiece made of non-ferromagnetic material can be transported and shaken, and in this state, there is no need to energize and start multiple electromagnetic columns 6, which reduces energy consumption;

If the electro-rheological fluid capsule 8 is not enough to clamp the workpiece after being energized and solidified, the workpiece will move downward under the action of gravity. At this time, the tension spring 3 is reduced by the total tension of the electro-magnetic disk 4 and the workpiece, the tension spring 3 contracts, and the tension spring The rotary contact 32 on the sliding block 31 on the 3 moves upward, and the rotary contact 32 is rubbed by the first conductive strip 21 and rotates, so that the conductive strip 322 on the rotary contact 32 rotates out and is electrically connected to the first conductive strip 21. contact to make the drive circuit 51 change from a half-load state to a full-load state;

When the drive circuit 51 is fully loaded, the plurality of electromagnetic columns 6 and the electrorheological fluid sacs 8 are simultaneously turned on in one drive cycle. 8. Form support for the peripheral side of the workpiece to prevent the workpiece from shaking when the workpiece is transported.

The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited to this. The equivalent replacement or change of the inventive concept thereof shall be included within the protection scope of the present invention.

Claims (5)

1. An electromagnetic lifting plate for reducing the shaking of a workpiece, comprising a lifting seat (1), characterized in that a sliding column (2) is fixedly connected in the bottom of the lifting seat (1), and the sliding column ( 2) The upper sleeve is provided with a tension spring (3) and the bottom is slidably connected with an electro-magnetic disk (4), and both ends of the tension spring (3) are fixedly connected to the bottom of the lifting base (1) and the top of the electro-magnetic disk (4) respectively. A first conductive strip (21) is fixedly connected to the outer peripheral side of the sliding column (2) in the vertical direction, and a sliding block (31) is fixedly connected to the inner side of the middle of the tension spring (3), and the sliding block (31) is far away from One end of the tension spring (3) is rotatably connected with a rotating contact (32), and a baffle (321) is fixedly connected to the outer peripheral side of the rotating contact (32) perpendicular to its own axial direction, and one side of the baffle (321) is in contact with the baffle (321). Relying on the sliding block (31), a conductive sheet (322) is fixedly connected to the outer peripheral side of the rotating contact (32) perpendicular to the direction of the baffle plate (321), and the conductive sheet (322) is connected to the first conductive strip. (21) Electrical contact; A plurality of electromagnetic columns (6) are fixedly connected to the bottom of the electro-magnetic disk (4), and a water bladder (7) is fixedly connected to the bottom of the electro-magnetic disk (4). An electrorheological fluid bag (8) is fixedly connected to the bottom of the water bag (7), the electrorheological fluid bag (8) is filled with electrorheological fluid, and a plurality of electrorheological fluids are fixedly connected to the bottom surface of the electrorheological fluid bag (8). A magnetic strip (81), the electro-magnetic disk (4) is fixedly connected with a plurality of guide posts (9) perpendicular to the bottom peripheral side of the bottom surface, and a plurality of the guide posts (9) are provided with guide grooves (91), so A second conductive strip (92) is fixedly connected to the inner side of the guide groove (91), and a plurality of magnetic needles (93) are rotatably connected to the side of the guide groove (91) away from the second conductive strip (92). (93) One end is fixedly connected with a conductive contact (931), and the conductive contact (931) is electrically connected to the second conductive strip (92); A power supply (5) is installed in the electro-magnetic disk (4), the power supply (5) is electrically connected with a driving circuit (51), and the driving circuit (51) is connected to the first conductive strip (21), a plurality of electromagnetic The pillars (6) and the plurality of second conductive strips (92) are all electrically connected. 2 . The electromagnetic lifting plate for reducing workpiece shaking according to claim 1 , wherein the conductive sheet ( 322 ) is initially located on the rotating contact ( 32 ) and away from the first conductive strip ( 21 ) in an initial state. 3 . On one side, the baffle plate (321) is initially located at the bottom of the rotating contact (32) and abuts on the sliding block (31) on the side away from the conductive sheet (322). 3. The electromagnetic lifting plate for reducing workpiece shaking according to claim 1, wherein a plurality of the electromagnetic columns (6) are evenly distributed on the electromagnetic disk (4). 4. The electromagnetic lifting plate for reducing workpiece shaking according to claim 1, wherein a plurality of the magnetic strips (81) are distributed at the bottom of the electrorheological fluid bag (8) in a circular array, and the magnetic strips (81) are arranged in a circular array. The south poles all point to the bottom center of the electrorheological sac (8). 5. The electromagnetic lifting plate for reducing workpiece shaking according to claim 1, wherein a plurality of the guide posts (9) are evenly distributed on the bottom peripheral side of the electromagnetic plate (4), and a plurality of magnetic needles (93) The conductive contacts (931) are evenly spaced on the guide groove (91) and the rotating plane passes through the central axis of the electromagnetic disk (4), and the conductive contacts (931) are all located on the magnetic south pole of the magnetic needle (93).

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