Permanent magnet lifting device

Abstract

The invention discloses a permanent magnet lifting device, and relates to the technical field of permanent magnet lifting, the permanent magnet lifting device comprises a base and an operating mechanism, the base is fixedly connected with a connecting column, the connecting column is sleeved with a plurality of vertically arranged permanent magnet units, and each permanent magnet unit comprises a fixed disc and a plurality of permanent magnets which are fixedly embedded in the fixed disc and are distributed in a circumferential array; the like magnetic poles of two adjacent permanent magnets in each permanent magnet unit face opposite directions; the permanent magnet unit located at the bottommost part is fixedly installed on the base, and the operating mechanism is used for driving the two adjacent permanent magnet units to generate relative rotation so that the permanent magnets between the two adjacent permanent magnet units can be switched between a staggered state and an opposite state. The lifting of the object can be realized only by reserving a gap between the object to be lifted and the ground without a larger space, and on the other hand, compared with the use of a forklift, the device can still enter the forklift to lift the object when the external space of the object to be lifted is narrow.

Description

Technical Field

[0001] The invention relates to the technical field of permanent magnet lifting, in particular to a permanent magnet lifting device. Background Art

[0002] With the development of the times and the advancement of technology, more and more energy-saving equipment has entered people's lives. Since permanent magnetic lifting devices do not consume much energy, they will not produce any pollutant emissions during operation, such as waste gas, waste water, waste residue, etc. This has positive significance for protecting the environment and reducing pollution.

[0003] In the prior art, forklifts or jacks are usually used to lift some equipment or objects. However, in some very narrow places where there are obstructions above the top of the object to be lifted, it is difficult for a forklift to enter. When it is necessary to inspect the bottom of the object to be lifted, it is inconvenient for a forklift to enter the narrow space to lift the object to be lifted. For a jack, a large space must be left between the object to be lifted and the ground. Summary of the invention

[0004] The purpose of the present invention is to provide a permanent magnetic lifting device to solve the deficiencies in the above-mentioned prior art.

[0005] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a permanent magnet lifting equipment, comprising a base, a connecting column is fixedly connected to the base, a plurality of vertically arranged permanent magnet units are sleeved on the connecting column, each of the permanent magnet units comprises a fixed disk and a plurality of permanent magnets fixedly embedded in the fixed disk and distributed in a circular array, and the like poles of two adjacent permanent magnets in each permanent magnet unit face opposite directions; the permanent magnet unit located at the bottom is fixedly installed on the base, a top cover located above each permanent magnet unit is sleeved on the connecting column, and a fork-lifting piece is fixedly connected to the top cover; and also includes an operating mechanism, which is used to drive relative rotation between two adjacent permanent magnet units so that the permanent magnets between the two adjacent permanent magnet units can switch between a misaligned state and a facing state.

[0006] Furthermore, the fork-lifting member includes a connecting plate and a horizontal extension portion, the top of the connecting plate is fixedly connected to the top cover, and the bottom of the connecting plate is fixedly connected to the horizontal extension portion.

[0007] Furthermore, the fork-lifting member includes: a connecting plate, which is fixedly connected to the top cover, a horizontal extension part, which is vertically slidably connected to the connecting plate; a screw rod, which is vertically fixedly connected to the horizontal extension part, and the screw rod passes through the through hole on the connecting plate and is threaded with an adjusting nut.

[0008] Furthermore, the fork-lifting member includes: a connecting plate, which is fixedly connected to the top cover, a horizontal extension part, which is vertically slidably connected to the connecting plate; a threaded sleeve rod, which is fixedly connected to the horizontal extension part; and a bolt, which passes through the through hole on the connecting plate and is threadedly connected to the threaded sleeve.

[0009] Furthermore, the operating mechanism includes: a connecting frame, which is fixedly mounted on the base, and is vertically slidably connected to the fixed disks of the odd-numbered permanent magnet units arranged from bottom to top; an arc-shaped rack, which is rotatably connected to the connecting frame with the connecting column as the axis, and is vertically slidably connected to the fixed disks of the even-numbered permanent magnet units arranged from bottom to top; a driving motor, which is fixedly mounted on the connecting frame, and has a gear coaxially fixedly connected to its rotating shaft that meshes with the arc-shaped rack.

[0010] Furthermore, each of the fixed disks is fixedly connected with an operating rod, the arc-shaped rack is fixedly connected with a first sliding rod, and a plurality of first sliding blocks are slidably connected to the first sliding rod, and each first sliding block is clamped with the operating rod of the fixed disk of each even-numbered permanent magnetic unit arranged from bottom to top, and a second sliding rod is fixedly connected to the connecting frame, and a plurality of second sliding blocks are slidably connected to the second sliding rod, and each second sliding block is clamped with the operating rod of the fixed disk of each odd-numbered permanent magnetic unit arranged from bottom to top.

[0011] Furthermore, both ends of each fixed disk are fixedly connected with sealed ends.

[0012] Furthermore, a lubrication ring is provided between the sealed end of the upper end of the fixed disk close to the bottom and the sealed end of the lower end of the fixed disk close to the top of two adjacent fixed disks.

[0013] Furthermore, a limiting nut is threaded onto the connecting column.

[0014] Compared with the prior art, the present invention provides a permanent magnet lifting device. The worker first slowly inserts the fork-lifting piece in the device into the gap between the object to be lifted and the ground, and then drives the two adjacent permanent magnet units to rotate relative to each other through the operating mechanism so that the permanent magnets between the two adjacent permanent magnet units are switched from a misaligned state to a facing state. In this process, the repulsive force between the two adjacent permanent magnet units gradually increases, and the permanent magnet unit close to the ground is restricted by the base in contact with the ground, and then the permanent magnet unit adjacent to it will gradually rise relative to the connecting column. Along with the gradual lifting of each permanent magnet unit, the top cover will also gradually rise, and the fork-lifting piece on the top cover will lift the object and slowly raise it, thereby achieving the lifting of the object.

[0015] On the one hand, compared to using a jack, only a gap is required between the object to be lifted and the ground, and a large space is not required to lift the object. On the other hand, compared to using a forklift, even if the external space of the object to be lifted is small, the device can still enter it to lift the object, reducing the limitations of the environment on the use of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0017] Figure 1 A schematic diagram of a partial explosion structure of a lifting device provided by an embodiment of the present invention;

[0018] Figure 2 A schematic structural plan view of the misaligned state and true alignment state of permanent magnets in adjacent permanent magnet units provided by an embodiment of the present invention;

[0019] Figure 3 A schematic diagram of the structure of a fork-lifting member provided in an embodiment of the present invention;

[0020] Figure 4 A schematic structural diagram of a lifting device with two permanent magnet units in a non-working state provided by an embodiment of the present invention;

[0021] Figure 5 A schematic structural diagram of a lifting device with three permanent magnet units in a non-working state provided by an embodiment of the present invention;

[0022] Figure 6 A schematic structural diagram of a lifting device with four permanent magnet units in a non-working state provided by an embodiment of the present invention;

[0023] Figure 7 A schematic diagram of the structure of a connecting column and a limiting nut provided in an embodiment of the present invention;

[0024] Figure 8 A schematic diagram of the structure of the operating mechanism provided in an embodiment of the present invention operating each permanent magnet unit in a non-operating state;

[0025] Fig. 9 A schematic diagram of the structure of the operating mechanism provided in an embodiment of the present invention operating each permanent magnet unit to be in a working state;

[0026] Fig.10 A schematic diagram of the structures of the first slider and the second slider provided in an embodiment of the present invention.

[0027] Description of reference numerals:

[0028] 1. Base; 11. Connecting column; 111. Top cover; 112. Limiting nut; 2. Permanent magnet unit; 21. Fixed disk; 211. End cap; 22. Permanent magnet; 3. Fork-lifting piece; 31. Connecting plate; 32. Horizontal extension part; 33. Screw rod; 331. Adjusting nut; 34. Threaded sleeve rod; 35. Bolt; 4. Operating mechanism; 41. Operating rod; 42. Connecting frame; 421. Second slide rod; 43. Arc rack; 431. First slide rod; 44. Driving motor; 45. Gear; 5. First slide bar; 6. Second slide bar; 7. Lubricating ring. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0030] See also Figure 1-10 A permanent magnet lifting device provided by an embodiment of the present invention comprises a base 1 and an operating mechanism 4, wherein a connecting column 11 is fixedly connected to the base 1, and a plurality of vertically arranged permanent magnet units 2 are sleeved on the connecting column 11, each permanent magnet unit 2 comprises a fixed disk 21 and a plurality of permanent magnets 22 fixedly embedded in the fixed disk 21 and distributed in a circumferential array, and the like magnetic poles of two adjacent permanent magnets 22 in each permanent magnet unit 2 face opposite directions; the permanent magnet unit 2 at the bottom is fixedly installed on the base 1, and a top cover 111 located above each permanent magnet unit 2 is sleeved on the connecting column 11, and the top cover 111 is provided on the top cover 111. A fork-lifting member 3 is fixedly connected to 11, specifically, the fork-lifting member 3 includes a connecting plate 31 and a horizontal extension portion 32, the top of the connecting plate 31 is fixedly connected to the top cover 111, and the bottom is fixedly connected to the horizontal extension portion 32; the operating mechanism 4 is used to drive the two adjacent permanent magnet units 2 to generate relative rotation so that the permanent magnet 22 between the two adjacent permanent magnet units 2 can switch between a misaligned state and a facing state, specifically, the operating mechanism 4 includes a plurality of operating rods 41, each operating rod 41 is fixedly connected to each fixed disk 21 in a one-to-one correspondence, and a limiting nut 112 is screwed on the connecting column 11.

[0031] Compared with the prior art, the present invention provides a permanent magnetic lifting device. The worker first selects the number of permanent magnetic units 2 according to the height to be raised of the object to be raised. After the number of permanent magnetic units 2 is determined, the limiting nut 112 on the connecting column 11 is rotated to sleeve the connecting disks of each permanent magnetic unit 2 on the connecting column 11 through the shaft sleeve. After the sleeve work of the permanent magnetic unit 2 is completed, the limiting nut 112 is screwed to the connecting column 11. The worker slowly inserts the horizontal extension part 32 of the fork lifting member 3 in the device into the gap between the object to be raised and the ground. After the connecting plate 31 abuts against the object so that the lifting device can no longer get closer to the object, the movement stops. If there are two permanent magnetic units 2, the worker fixes the operating rod 41 of the fixed disk 21 of the permanent magnetic unit 2 close to the ground with one hand, and slowly pulls the operating rod 41 of the fixed disk 21 of the permanent magnetic unit 2 close to the top cover 111 with the other hand (when pulling the operating rod 41, the operating rod 41 also rises vertically), so that the two permanent magnetic units 2 are relatively rotated so that the permanent magnets 22 between the two adjacent permanent magnetic units 2 are switched from the misaligned state to the facing state, and then a repulsive force is generated between the two permanent magnetic units 2. The permanent magnetic unit 2 close to the ground is restricted by the ground and cannot move, while the permanent magnetic unit 2 close to the top cover 111 can be pushed along the extension direction of the connecting column 11. The top cover 111 and the connecting plate 31 on the top cover 111 are moved, and the vertical movement of the connecting plate 31 causes the horizontal extension part 32 to move and thus lift the object; if the number of the permanent magnetic units 2 is three, the distance between the top cover 111 and the base 1 changes due to the change in the number of the permanent magnetic units 2. First, the top cover 111 needs to be replaced, and then for each permanent magnetic unit 2 arranged vertically from bottom to top, the worker controls the first fixed disk 21 to remain stationary, and controls the third fixed disk 21 not to rotate, and then slowly rotates the operating rod 41 of the second fixed disk 21 to cause relative rotation between the two adjacent permanent magnetic units 2 so that the permanent magnets 2 between the two adjacent permanent magnetic units 2 2 is switched from the misaligned state to the facing state, so that the permanent magnetic unit 2 close to the top cover 111 lifts the top cover 111 and then lifts the object through the fork-lifting member 3. During this process, the operating rod 41 on the second fixed disk 21 is also rising while being pulled, while the operating rod 41 on the third fixed disk 21 only rises vertically; if the number of permanent magnetic units 2 is four, and so on, the operator controls the operating rods 41 of the first and third fixed disks 21 and rotates the operating rods of the second and fourth fixed disks 21; it is worth mentioning that as the number of permanent magnetic units 2 changes, the position of the limit nut 112 needs to be adjusted as needed to prevent the limit nut 112 from hindering the work of the permanent magnetic unit 2.

[0032] On the one hand, compared to using a jack, only a gap is required between the object to be lifted and the ground, and a large space is not required to lift the object. On the other hand, compared to using a forklift, even if the external space of the object to be lifted is small, the device can still enter it to lift the object, reducing the limitations of the environment on the use of the device.

[0033] Among them, both ends of each fixed disk 21 are fixedly connected with a sealing end 211, and a lubricating ring 7 is arranged between the sealing end 211 at the upper end of the fixed disk 21 close to the bottom and the sealing end 211 at the lower end of the fixed disk 21 close to the top of the two adjacent fixed disks 21. The sealing end 211 can fix the permanent magnet 22 on the fixed disk 21, and the lubricating ring 7 can reduce the friction resistance encountered by the sealing end 211 of the fixed disk 21 during rotation.

[0034] As another embodiment provided by the present invention, referring to Figure 3 The fork-lifting member 3 includes a connecting plate 31, a horizontal extension portion 32 and a screw rod 33. The connecting plate 31 is fixedly connected to the top cover 111, and the horizontal extension portion 32 is vertically slidably connected to the connecting plate 31; the screw rod 33 is vertically fixedly connected to the horizontal extension portion 32, and the screw rod 33 passes through the through hole on the connecting plate 31 and is screwed with an adjusting nut 331; refer to Figure 8 , Fig. 9 as well as Fig.10 The operating mechanism 4 includes a connecting frame 42, an arcuate rack 43 and a driving motor 44. The connecting frame 42 is fixedly mounted on the base 1, and the connecting frame 42 is vertically slidably connected to the fixed disk 21 of the odd-numbered permanent magnet units 2 arranged from bottom to top of each permanent magnet unit 2; the arcuate rack 43 is rotatably connected to the connecting frame 42 with the connecting column 11 as the axis, and the arcuate rack 43 is vertically slidably connected to the fixed disk 21 of the even-numbered permanent magnet units 2 arranged from bottom to top of each permanent magnet unit 2; the driving motor 44 is fixedly mounted on the connecting frame 42, and a gear engaging with the arcuate rack 43 is coaxially fixedly connected to the rotating shaft of the driving motor 44. The gear 45 is connected to the connecting frame 42, and specifically, an operating rod 41 is fixedly connected to each fixed disk 21, a first sliding rod 431 is fixedly connected to the arc-shaped rack 43, and a plurality of first sliding blocks 5 are slidably connected to the first sliding rod 431, and each first sliding block 5 is clamped with the operating rod 41 of the fixed disk 21 of each even-numbered permanent magnetic unit 2 arranged from bottom to top, and a second sliding rod 421 is fixedly connected to the connecting frame 42, and a plurality of second sliding blocks 6 are slidably connected to the second sliding rod 421, and each second sliding block 6 is clamped with the operating rod 41 of the fixed disk 21 of each odd-numbered permanent magnetic unit 2 arranged from bottom to top.

[0035] The worker first selects the number of permanent magnetic units 2 according to the height to be raised of the object to be raised. After determining the number of permanent magnetic units 2, the worker rotates the limit nut 112 on the connecting column 11 to sleeve the connecting disks of each permanent magnetic unit 2 on the connecting column 11 through the shaft sleeve. After the sleeve work of the permanent magnetic unit 2 is completed, the limit nut 112 is screwed to the connecting column 11. Then, the worker rotates the nut to adjust the vertical distance between the connecting plate 31 of the top cover 111 and the horizontal extension portion 32 through the cooperation between the nut and the screw rod 33, so that The top cover 111 is always above each permanent magnet unit 2, and the horizontal extension part 32 can contact the ground. After adjusting the distance between the horizontal extension part 32 and the connecting plate 31, the top cover 111 is sleeved on the connecting column 11, and finally the limiting nut 112 is screwed on the connecting column 11. The worker slowly inserts the horizontal extension part 32 of the fork lifting member 3 in the device into the gap between the object to be lifted and the ground. After the connecting plate 31 contacts the object so that the lifting device can no longer get closer to the object, it stops moving. Start the driving motor 44, the rotation of the shaft of the driving motor 44 will drive the gear 45 to rotate, and the rotation of the gear 45 will drive the rack to rotate relative to the axis of the connecting column 11. During the movement of the rack, the rack will drive the first slide bar 431 to move, and each first sliding sleeve on the first slide bar 431 will slide vertically relative to the slide bar. During the sliding of the first sliding sleeve relative to the first slide bar 431 and the rotation of the rack relative to the connecting column 11, the first slide bar 431 on the connecting frame 42 remains in a fixed state, and the vertical arrangement on the first slide bar 431 is from bottom to top. The first second slide block 6 remains stationary, and the remaining second slide blocks 6 all slide vertically along the second slide bar 421. In this process, the degree of rotation of the rack is adjusted by the driving motor 44, so that the lifting height of the object is more accurate; it is worth mentioning that the fork lifting member 3 here does not need to be replaced, only the vertical distance between the horizontal extension portion 32 and the connecting plate 31 needs to be adjusted, and the driving motor 44 drives the fixed plate 21 to rotate, so that the operating device is safer and the lifting height of the object is more accurate.

[0036] As another embodiment provided by the present invention, referring to Figure 6 The fork-lifting member 3 includes a connecting plate 31, a horizontal extension portion 32, a threaded sleeve rod 34 and a bolt 35. The connecting plate 31 is fixedly connected to the top cover 111, and the horizontal extension portion 32 is vertically slidably connected to the connecting plate 31; the threaded sleeve rod 34 is fixedly connected to the horizontal extension portion 32; the bolt 35 passes through the through hole on the connecting plate 31 and is threadedly connected to the threaded sleeve rod 34, wherein the nut of the bolt 35 can abut and cooperate with the top of the connecting plate 31, that is, the upper mouth of the through opening. The worker rotates the bolt 35 so that the threaded sleeve rod 34 can drive the horizontal extension portion 32 to slide vertically relative to the connecting plate 31, thereby adjusting the distance between the horizontal extension portion 32 and the connecting plate 31, and also can achieve the effect of not having to replace a new fork-lifting member 3.

[0037] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A permanent magnetic lifting device, characterized in that: The invention comprises a base (1), a connecting column (11) being fixedly connected to the base (1), a plurality of vertically arranged permanent magnet units (2) being sleeved on the connecting column (11), each of the permanent magnet units (2) comprising a fixed disk (21) and a plurality of permanent magnets (22) fixedly embedded in the fixed disk (21) and distributed in a circumferential array, and the like magnetic poles of two adjacent permanent magnets (22) in each permanent magnet unit (2) are oriented in opposite directions; The permanent magnetic unit (2) at the bottom is fixedly mounted on the base (1), a top cover (111) located above each permanent magnetic unit (2) is sleeved on the connecting column (11), and a fork-lifting member (3) is fixedly connected to the top cover (111); It also comprises an operating mechanism (4), wherein the operating mechanism (4) is used to drive two adjacent permanent magnet units (2) to generate relative rotation so that the permanent magnets (22) between the two adjacent permanent magnet units (2) are switched between a misaligned state and a facing state.

2. A permanent magnetic lifting device according to claim 1, characterized in that: The fork-lifting member (3) comprises a connecting plate (31) and a horizontal extension portion (32); the top of the connecting plate (31) is fixedly connected to the top cover (111), and the bottom of the connecting plate (31) is fixedly connected to the horizontal extension portion (32).

3. A permanent magnetic lifting device according to claim 1, characterized in that: The fork-lifting member (3) comprises: A connecting plate (31) fixedly connected to the top cover (111); A horizontal extension portion (32) vertically slidably connected to the connecting plate (31); The screw rod (33) is vertically fixedly connected to the horizontal extension part (32). The screw rod (33) passes through the through hole on the connecting plate (31) and is then screwed with an adjusting nut (331).

4. A permanent magnetic lifting device according to claim 1, characterized in that: The fork-lifting member (3) comprises: A connecting plate (31) fixedly connected to the top cover (111); A horizontal extension portion (32) vertically slidably connected to the connecting plate (31); A threaded sleeve rod (34) fixedly connected to the horizontal extension portion (32); The bolt (35) passes through the through hole on the connecting plate (31) and is screwed to the threaded sleeve rod (34).

5. A permanent magnetic lifting device according to claim 1, characterized in that: The operating mechanism (4) comprises a plurality of operating rods (41), and each operating rod (41) is fixedly connected to each fixed disk (21) in a one-to-one correspondence.

6. A permanent magnetic lifting device according to claim 1, characterized in that: The operating mechanism (4) comprises: A connecting frame (42) is fixedly mounted on the base (1), and the connecting frame (42) is vertically slidably connected to the fixing plates (21) of the odd-numbered permanent magnetic units (2) arranged from bottom to top of each permanent magnetic unit (2); An arc-shaped rack (43) is rotatably connected to the connecting frame (42) with the connecting column (11) as the axis, and the arc-shaped rack (43) is vertically slidably connected to the fixed disks (21) of the even-numbered permanent magnetic units (2) arranged from bottom to top of each permanent magnetic unit (2); The driving motor (44) is fixedly mounted on the connecting frame (42), and a gear (45) meshing with the arc-shaped rack (43) is coaxially fixedly connected to the rotating shaft of the driving motor (44).

7. A permanent magnetic lifting device according to claim 6, characterized in that: An operating rod (41) is fixedly connected to each of the fixed disks (21); a first sliding rod (431) is fixedly connected to the arc-shaped rack (43); a plurality of first sliding blocks (5) are slidably connected to the first sliding rod (431); each of the first sliding blocks (5) is clamped with an operating rod (41) of a fixed disk (21) of an even-numbered permanent magnetic unit (2) in order from bottom to top; a second sliding rod (421) is fixedly connected to the connecting frame (42); a plurality of second sliding blocks (6) are slidably connected to the second sliding rod (421); each of the second sliding blocks (6) is clamped with an operating rod (41) of a fixed disk (21) of an odd-numbered permanent magnetic unit (2) in order from bottom to top.

8. A permanent magnetic lifting device according to claim 1, characterized in that: Both ends of each fixed disk (21) are fixedly connected with a sealing end (211).

9. A permanent magnetic lifting device according to claim 8, characterized in that: A lubrication ring (7) is provided between the sealing end (211) at the upper end of the fixing disk (21) close to the bottom and the sealing end (211) at the lower end of the fixing disk (21) close to the top of two adjacent fixing disks (21).

10. A permanent magnetic lifting device according to claim 1, characterized in that: A limiting nut (112) is threadedly connected to the connecting column (11).

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