CN116865143B - Rotary magnetic anti-falling protection device - Google Patents
Rotary magnetic anti-falling protection device Download PDFInfo
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- CN116865143B CN116865143B CN202310994631.9A CN202310994631A CN116865143B CN 116865143 B CN116865143 B CN 116865143B CN 202310994631 A CN202310994631 A CN 202310994631A CN 116865143 B CN116865143 B CN 116865143B
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- 239000011553 magnetic fluid Substances 0.000 claims abstract description 56
- 238000007789 sealing Methods 0.000 claims description 4
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- 230000000694 effects Effects 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000004020 conductor Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 230000005415 magnetization Effects 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
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- 229910000831 Steel Inorganic materials 0.000 description 1
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910001172 neodymium magnet Inorganic materials 0.000 description 1
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- 229910000859 α-Fe Inorganic materials 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/02—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B35/00—Safety belts or body harnesses; Similar equipment for limiting displacement of the human body, especially in case of sudden changes of motion
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G5/00—Component parts or accessories for scaffolds
- E04G5/04—Means for fastening, supporting, or bracing scaffolds on or against building constructions
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Load-Engaging Elements For Cranes (AREA)
Abstract
The invention relates to the technical field of anti-falling in electric power pole tower operation, in particular to a rotary magnetic anti-falling protection device, which comprises a magnetic seat and a rotatable magnetic ring, wherein the magnetic seat comprises a first fixed magnetic ring, a second fixed magnetic ring and a magnetic fluid cavity provided with magnetic fluid, the first fixed magnetic ring and the second fixed magnetic ring are respectively sleeved at two ends of the magnetic fluid cavity, the middle part of the magnetic fluid cavity is provided with a through hole for sleeving with a foot nail, the through hole penetrates through the first fixed magnetic ring and the second fixed magnetic ring, and the rotatable magnetic ring is detachably sleeved outside the magnetic fluid cavity and is provided with a safety buckle; the rotatable magnetic ring, the first fixed magnetic ring and the second fixed magnetic ring are respectively provided with a plurality of magnetic blocks, two adjacent magnetic blocks are in opposite attraction arrangement, and the arrangement modes of the magnetic blocks at the corresponding positions of the first fixed magnetic ring and the second fixed magnetic ring are the same. The invention has the characteristics of light weight and portability, and can be suitable for diversified pole and tower operations.
Description
Technical Field
The invention relates to the technical field of power tower operation anti-falling, in particular to a rotary magnetic anti-falling protection device.
Background
Climbing tower operations in the power industry continue to be a class of higher risk level operations where the mortality rate of tower operations falls is nearly 100%. However, due to the diversification of the structure of the pole tower, the differentiation of the operation behaviors of the operators for climbing the pole tower, and the complexity of the factors of hidden danger of falling, it is important how to realize good protection during the operation of climbing the pole tower.
However, in order to realize 100% protection of falling protection in the tower operation in the power industry, a plurality of protection measures such as safety ropes, safety catches and the like are often preset, but the protection needs to be carried by operators at any time, so that the load of the tower operation is greatly increased. More importantly, the existing anti-falling protection adopts a traditional mechanical structure mode, the installation and the disassembly of the anti-falling protection are very complicated, and the phenomenon that the pole tower is climbed back and forth due to the installation or the disassembly of the safety rope frequently occurs in field operation. In the prior anti-personal-falling protection of the pole and tower operation in the power industry, an effective and portable anti-falling protection device is lacking, and how to realize the light weight and portability and the whole course protection is the key for optimizing the anti-falling protection of the climbing pole and tower operation in the power industry.
Disclosure of Invention
The invention aims to overcome the defects that the existing pole tower operation anti-falling protection device in the power industry is too mechanized, cannot be light and is not easy to disassemble and assemble, and provides the rotary magnetic anti-falling protection device which has the characteristics of light weight and portability, is easy to disassemble and assemble by operators at different positions of the climbing pole tower operation, can be combined with the characteristic of multiple postures during the pole tower operation, and is used for actively or passively designing the working mode of the device so as to adapt to diversified pole tower operations.
In order to solve the technical problems, the invention adopts the following technical scheme:
the rotary magnetic anti-falling protection device comprises a magnetic seat and a rotatable magnetic ring, wherein the magnetic seat comprises a first fixed magnetic ring, a second fixed magnetic ring and a magnetic fluid cavity provided with magnetic fluid, the first fixed magnetic ring and the second fixed magnetic ring are respectively sleeved at two ends of the magnetic fluid cavity, a through hole used for being sleeved with a foot nail is formed in the middle of the magnetic fluid cavity, the through hole penetrates through the first fixed magnetic ring and the second fixed magnetic ring, and the rotatable magnetic ring is positioned between the first fixed magnetic ring and the second fixed magnetic ring, can be detachably sleeved outside the magnetic fluid cavity and is provided with a safety buckle; the rotatable magnetic ring, the first fixed magnetic ring and the second fixed magnetic ring are provided with a plurality of magnetic blocks, the number of the magnetic blocks is equal to that of the rotatable magnetic ring, the first fixed magnetic ring and the second fixed magnetic ring, the adjacent two magnetic blocks are in opposite attraction arrangement, and the arrangement modes of the magnetic blocks at the positions corresponding to the first fixed magnetic ring and the second fixed magnetic ring are the same.
The magnetic seat can be sleeved on the foot nails, the foot nails are realized by sleeving the magnetic seat on the through holes, the magnetic seat can be rotated relative to the magnetic seat to adjust the alignment positions of the magnetic seat and the first fixed magnetic ring and the second fixed magnetic ring, the first fixed magnetic ring, the second fixed magnetic ring and the rotatable magnetic ring are of annular structures and are formed by splicing a plurality of magnetic blocks similar to a fan-shaped structure, the number of the magnetic blocks is even, and two adjacent magnetic blocks are in opposite attraction arrangement in the plurality of magnetic blocks forming the first fixed magnetic ring, namely, the magnetic blocks are alternately arranged in N pole and S pole when seen from one side of the first fixed magnetic ring; the structural composition of the second fixed magnetic ring and the rotatable magnetic ring is similar to that of the first fixed magnetic ring; the number of the magnetic blocks on the rotatable magnetic ring, the first fixed magnetic ring and the second fixed magnetic ring is equal, the magnetic blocks on the rotatable magnetic ring can be aligned with the magnetic blocks on the first fixed magnetic ring and the second fixed magnetic ring by adjusting the rotation position of the rotatable magnetic ring relative to the magnetic fluid cavity, in the use process, the arrangement mode of the magnetic blocks at the corresponding positions of the first fixed magnetic ring and the second fixed magnetic ring along the axis direction of the magnetic fluid cavity is the same, and a plurality of magnetic fields are formed between one side of the rotatable magnetic ring and the first fixed magnetic ring and a plurality of magnetic fields are formed between the other side of the rotatable magnetic ring and the second fixed magnetic ring after the rotation angle of the rotatable magnetic ring is adjusted; the magnetic fluid in the magnetic fluid cavity is magnetized by the magnetic field, so that the magnetic seat is tightly fixed on the foot nails, friction force is increased, and meanwhile, the magnetic fluid is bound with operators through the safety buckle on the rotatable magnetic ring, so that the anti-falling protection effect can be achieved even if the operators lose feet carelessly. Because the foot nails are fixedly arranged on the pole tower, the magnetic force seat can be firstly fixed on the foot nails in the construction operation process, an operator only needs to carry the rotatable magnetic ring, and the rotatable magnetic ring is sleeved with the magnetic fluid cavity to realize the anti-falling function. Meanwhile, the flexible mounting mode of fastening function of the magnetic fluid under the action of the magnetic field is adopted, so that the structural friction loss of the protection device can be reduced, and the protection device is easy to mount and dismount. Aiming at the problems that the operation steps of the anti-high-falling protection device in the existing electric power tower operation are complicated, the quality is heavy, the disassembly and the installation are not easy, and the like, the protection device is easy to assemble and disassemble from the aspects of lightening the protection device for the tower operation, simplifying the assembly/disassembly of the protection device, and lightening and multifunctional the application of a protection strategy, and does not influence the normal tower operation.
Preferably, the cross-sectional areas of the rotatable magnetic ring, the first fixed magnetic ring and the second fixed magnetic ring are all equal.
Preferably, the outer wall of the magnetic fluid cavity is provided with a limiting part, the limiting part is positioned between the first fixed magnetic ring and the second fixed magnetic ring, and the rotatable magnetic ring is positioned at the limiting part.
Preferably, the rotatable magnetic ring comprises a first half ring and a second half ring, a switch capable of being attracted is further arranged between the first half ring and the second half ring, and the number of magnetic blocks in the first half ring is equal to that of the second half ring.
Preferably, the magnetic seat further comprises two magnetizers, the two magnetizers are respectively arranged at two distal ends of the first fixed magnetic ring and the second fixed magnetic ring, and the through holes penetrate through the magnetizers.
Preferably, the magneto-rheological body cavity is sleeved with an elastic sealing film.
Preferably, the rotatable magnetic ring, the first fixed magnetic ring and the second fixed magnetic ring are all permanent magnets.
Preferably, the number of the magnetic blocks in the rotatable magnetic ring, the first fixed magnetic ring and the second fixed magnetic ring is 4-8.
Preferably, a traction rope is also arranged in the safety buckle in a penetrating way.
Preferably, the first fixed magnetic ring or the second fixed magnetic ring is also provided with a safety buckle, and the length of the traction rope penetrated by the safety buckle on the first fixed magnetic ring or the second fixed magnetic ring is smaller than that of the traction rope penetrated by the safety buckle on the rotatable magnetic ring.
Compared with the prior art, the invention has the beneficial effects that:
(1) The flexible mounting mode of the magnetic fluid with the fastening function under the action of the magnetic field can reduce the structural friction loss of the protection device, is easy to mount and dismount, solves the application bottleneck problem that the traditional anti-falling device excessively pursues single falling protection, and designs and completes the operation scheme of the multi-mode human body tower with self-adaption, wherein the self-adaption is embodied in the operation process, the magnetic fluid can wrap climbing pins indiscriminately to achieve stability, and the multi-mode means can use the protection device to perform operations in different states; thereby optimizing the portable wearable application problem in the event of a small probability of a fall.
(2) The invention has the advantage of easy loading and unloading application, solves the complex procedures of binding and unbinding safety ropes used in the protection measures in the traditional high-altitude operation, saves the operation physical strength of operation and maintenance personnel, and is more suitable for the application of pole and tower operation.
Drawings
FIG. 1 is a front view of a rotary magnetic fall protection device according to the present invention;
FIG. 2 is a left side view of a rotary magnetic fall arrest device of the present invention;
fig. 3 is a top view of a rotary magnetic fall protection device according to the present invention.
FIG. 4 is a cross-sectional view A-A of FIG. 2;
FIG. 5 is a cross-sectional view A-A of the magnet holder;
FIG. 6 is a sectional view B-B of FIG. 1;
FIG. 7 is a cross-sectional view of C-C of FIG. 1;
FIG. 8 is a block diagram of the rotatable magnetic ring in the left view of FIG. 1;
FIG. 9 is a schematic diagram of a rotary magnetic fall protection device in an unlatched protection condition according to the present invention;
fig. 10 is a schematic diagram of a rotary magnetic fall protection device in a latch protection state according to the present invention.
The graphic indicia are illustrated as follows:
1. a magnetic base; 11. a first fixed magnetic ring; 12. a second fixed magnetic ring; 13. a magneto-rheological fluid chamber; 131. a limit part; 14. a through hole; 15. a magnetizer; 2. a rotatable magnetic ring; 21. a first half ring; 22. a second half ring; 23. a switch; 3. magnetic fluid; 4. a safety buckle; 41. a traction rope; 5. a magnetic block; 6. and (5) a foot nail.
Arrows in fig. 9 and 10 indicate the magnetic field direction.
Detailed Description
The invention is further described below in connection with the following detailed description. Wherein the drawings are for illustrative purposes only and are shown in schematic, non-physical, and not intended to be limiting of the present patent; for the purpose of better illustrating embodiments of the invention, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the size of the actual product; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
Example 1
As shown in fig. 1 to 10, a first embodiment of a rotary magnetic anti-falling protection device of the present invention includes a magnetic seat 1 and a rotatable magnetic ring 2, the magnetic seat 1 includes a first fixed magnetic ring 11, a second fixed magnetic ring 12, a magnetic fluid cavity 13 provided with a magnetic fluid 3, the first fixed magnetic ring 11 and the second fixed magnetic ring 12 are respectively sleeved at two ends of the magnetic fluid cavity 13, a through hole 14 for sleeving with a foot nail 6 is provided in the middle of the magnetic fluid cavity 13, the through hole 14 penetrates through the first fixed magnetic ring 11 and the second fixed magnetic ring 12, the rotatable magnetic ring 2 is located between the first fixed magnetic ring 11 and the second fixed magnetic ring 12, and is detachably sleeved outside the magnetic fluid cavity 13, and a safety buckle 4 is also provided; the rotatable magnetic ring 2, the first fixed magnetic ring 11 and the second fixed magnetic ring 12 are respectively provided with a plurality of magnetic blocks 5, the number of the magnetic blocks 5 is two, the number of the magnetic blocks 5 on the rotatable magnetic ring 2, the first fixed magnetic ring 11 and the second fixed magnetic ring 12 is equal, two adjacent magnetic blocks 5 are in opposite attraction arrangement, and the arrangement modes of the magnetic blocks 5 at the positions corresponding to the first fixed magnetic ring 11 and the second fixed magnetic ring 12 are the same.
The directions of magnetic fields generated by the first fixed magnetic ring 11 and the second fixed magnetic ring 12 and the rotatable magnetic ring 2 are the same, namely, the directions are clockwise and anticlockwise; the friction force generated by the magnetic flux magnetized magnetic fluid 3 interlaced with the first fixed magnetic ring 11 and the second fixed magnetic ring 12 after the rotatable magnetic ring 2 rotates provides a working protection foundation for the protection device.
As an embodiment of the present invention, the cross-sectional areas of the rotatable magnetic ring 2, the first fixed magnetic ring 11, and the second fixed magnetic ring 12 are all equal.
In the preferred embodiment, the rotatable magnetic ring 2, the first fixed magnetic ring 11 and the second fixed magnetic ring 12 are circular rings with the same cross-sectional area, but the thicknesses of the three rings can be adjusted as required, the first fixed magnetic ring 11 and the second fixed magnetic ring 12 can be set to be equal in thickness, and the thickness of the rotatable magnetic ring 2 is set to be thicker than the thicknesses of the first fixed magnetic ring 11 and the second fixed magnetic ring 12 at two ends so as to obtain a better effect.
As one embodiment of the present invention, the outer wall of the magnetic fluid cavity 13 is provided with a limiting portion 131, the limiting portion 131 is located between the first fixed magnetic ring 11 and the second fixed magnetic ring 12, and the rotatable magnetic ring 2 is located at the limiting portion 131.
Preferably, the limiting portion 131 is a groove, and the rotatable magnetic ring 2 is limited in the middle of the magnetic base 1 by the groove, that is, between the first fixed magnetic ring 11 and the second fixed magnetic ring 12, and the groove constrains the left-right movement range of the rotatable magnetic ring 2.
As one embodiment of the present invention, the number of magnetic blocks 5 in each of the rotatable magnetic ring 2, the first fixed magnetic ring 11, and the second fixed magnetic ring 12 is 4.
Preferably, 4 magnetic blocks 5 in the first fixed magnetic ring 11 and the second fixed magnetic ring 12 are distributed in a mode of being arranged in a vertically halving mode, so that after the magnetic blocks 5 in the subsequent rotatable magnetic ring 2 are aligned with the magnetic blocks 5 in the corresponding positions of the first fixed magnetic ring 11 and the second fixed magnetic ring 12, the rotatable magnetic ring 2 is convenient to open.
As an embodiment of the present invention, the rotatable magnetic ring 2 includes a first half ring 21 and a second half ring 22, a switch 23 capable of being attracted is further installed between the first half ring 21 and the second half ring 22, and the number of magnetic blocks 5 in the first half ring 21 and the second half ring 22 are equal.
The rotatable magnetic ring 2 consists of a first half ring 21 and a second half ring 22 which are arranged at the upper part and the lower part, an attraction switch 23 is an attraction magnet, and the first half ring 21 and the second half ring 22 are surrounded in a groove of a magnetic current cavity 13 on the magnetic seat 1 through the attraction magnet; after the vertical pulling force is applied to the rotatable magnetic ring 2, the rotatable magnetic ring 2 can be easily unlocked and detached from the magnetic base 1, so that the unlocking procedure of the invention is facilitated to be simplified.
As an embodiment of the present invention, the magnetic base 1 further includes two magnetic conductors 15, where the two magnetic conductors 15 are respectively disposed at two distal ends of the first fixed magnetic ring 11 and the second fixed magnetic ring 12, and the through hole 14 is disposed through the magnetic conductors 15.
The magnetizer 15 is arranged to facilitate the attraction of the magnetic fluid 3 in the magnetic fluid cavity 13 at the two ends of the magnetic seat 1, namely the first fixed magnetic ring 11 and the second fixed magnetic ring 12, which is beneficial to the acceleration magnetization of the magnetic fluid 3 under the action of a magnetic field. Preferably, the material of the magnetizer 15 is high-strength high-permeability 10# steel; the first fixed magnetic ring 11 and the second fixed magnetic ring 12 are all array type fixed permanent magnet blocks, a neodymium-iron-boron magnetic block 5Nd2Fe14B with stronger magnetism is selected as a material, a ferrite magnetic block 5 with lower magnetism is adopted as a switch 23 capable of being attracted, and the strength of a test magnetic field in reference air in the design of selection is about 0.1T; the magnetic fluid cavity 13 is sealed by a high-elasticity rubber film; the magnetic fluid 3 is MRF132-DG.
As an embodiment of the present invention, the magneto-rheological fluid chamber 13 is covered with an elastic sealing membrane.
The magnetic fluid cavity 13 is used for containing the magnetic fluid 3, and because the magnetic fluid 3 is accumulated with a surface deformation effect, the magnetic fluid cavity 13 is sealed by adopting the elastic sealing film, so that the magnetic fluid 3 has a better close effect, the accumulation effect of the magnetic fluid 3 in the cavity under a fixed working condition is better, and a more abundant working space is provided for the density change process of the magnetic fluid 3.
As an embodiment of the present invention, the rotatable magnetic ring 2, the first fixed magnetic ring 11, and the second fixed magnetic ring 12 are all permanent magnets.
As an embodiment of the present invention, the safety catch 4 is further provided with a pull cord 41.
By binding the traction rope 41 with the human body, when an operator drops carelessly, the operator can also rely on the friction force of the rotatable magnetic ring 2, the magnetic seat 1 and the glue nails 6 to obtain anti-falling protection.
Working principle:
when an operator performs pole and tower operation, firstly, the magnetic base 1 is sleeved on the climbing foot nails 6 from one end with the safety buckles 4 and the traction ropes 41, at the moment, as N poles and S poles of the first fixed magnetic rings 11 and the second fixed magnetic rings 12 are respectively staggered, magnetic paths are generated, at the moment, the magnetic fluid 3 is pulled by a self-magnetic field, the magnetic fluid 3 is slightly gathered, and most of the magnetic fluid is still in a fluid state; the first half ring 21 and the second half ring 22 of the magnetic attraction type rotatable magnetic ring 2 are arranged in the middle of the magnetic fluid cavity 13 through an attraction type switch 23, and the left and right movement range of the rotatable magnetic ring 2 is limited by a limiting part 131; the inner surface of the rotatable magnetic ring 2 and the outer surface of the magnetic fluid cavity 13 are in soft installation, and the rotatable magnetic ring 2 can be easily arranged on the outer surface of the magnetic fluid cavity 13.
When the locking protection requirement is needed, the rotatable magnetic ring 2 is rotated clockwise, the array type first fixed magnetic ring 11 and the second fixed magnetic ring 12 are distributed corresponding to the N pole and the S pole of the rotatable magnetic ring 2 when the rotatable magnetic ring 2 is rotated, a complete magnetic field is gradually formed, and larger magnetic flux is generated (the rotation angle of the rotatable magnetic ring 2 is not more than 90 degrees at maximum); at this time, the magnetic fluid 3 is magnetized due to the reinforced magnetic field distribution, so that the mechanical hardness of the magnetic fluid 3 is increased, and the magnetic seat 1 clamps the climbing pins 6, so that a large protection friction force is provided when a human body falls carelessly from the overhead operation.
For unlocking applications, when work is completed in a certain area, the pull cord 41 is pulled vertically upwards, causing the switch 23, which is engageable between the first half-ring 21 and the second half-ring 22 of the rotatable magnetic ring 2, to disengage, i.e. the rotatable magnetic ring 2 is opened. The rotatable magnetic ring 2 falls off from the magnetic seat 1, and the magnetic field is weakened, so that the magnetization of the magnetic fluid 3 is weakened, the mechanical property is weakened, and the magnetic seat 1 can be easily removed from the foot nails 6 at the moment, and of course, only the rotatable magnetic ring 2 can be detached from the magnetic seat 1, so that the magnetic seat 1 is still arranged on the foot nails 6. The principle and the flow of the single protection device are adopted, and the continuous operation can realize the whole protection tracking function of the pole and tower operation.
Example 2
The following is a second embodiment of a rotary magnetic anti-falling protection device of the present invention, which is similar to embodiment 1, except that the number of magnetic blocks 5 in the rotatable magnetic ring 2, the first fixed magnetic ring 11, and the second fixed magnetic ring 12 is 6.
The 6 magnetic blocks 5 are equal in size, and preferably, the 6 magnetic blocks 5 are arranged to be distributed in 3 blocks along the upper part and the lower part of the circular ring, so that the rotatable magnetic ring 2 can be conveniently detached under the action of longitudinal traction after being aligned with the first fixed magnetic ring 11 and the second fixed magnetic ring 12.
Example 3
The following is a second embodiment of a rotary magnetic anti-falling protection device of the present invention, which is similar to embodiment 1, and is different in that the first fixed magnetic ring 11 or the second fixed magnetic ring 12 is also provided with a safety buckle 4, and the length of a traction rope 41 penetrating through the safety buckle 4 on the first fixed magnetic ring 11 or the second fixed magnetic ring 12 is smaller than the length of the traction rope 41 penetrating through the safety buckle 4 on the rotatable magnetic ring 2.
In this embodiment, the first fixed magnetic ring 11 and/or the second fixed magnetic ring 12 of the magnetic base 1 are also provided with the safety buckle 4 and the traction rope 41.
The lengths of the safety buckle 4 and the traction rope 41 connected with the rotatable magnetic ring 2 are slightly longer than those of the safety buckle 4 and the traction rope 41 connected with the magnetic seat 1, when a human body falls to straighten the traction rope 41 on the magnetic seat 1, the traction rope 41 on the rotatable magnetic ring 2 is still in a loose state, and the attraction switch 23 between the first half ring 21 and the second half ring 22 of the rotatable magnetic ring 2 is prevented from being dragged and separated by mistake in the action process of falling the human body, so that the magnetization effect of the magnetic fluid 3 is attenuated, the mechanical property is weakened, and the safety accident is caused.
It is to be understood that the above examples of the present invention are provided by way of illustration only and not by way of limitation of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.
Claims (10)
1. The rotary magnetic anti-falling protection device is characterized by comprising a magnetic seat (1) and a rotatable magnetic ring (2), wherein the magnetic seat (1) comprises a first fixed magnetic ring (11), a second fixed magnetic ring (12) and a magnetic fluid cavity (13) provided with magnetic fluid (3), the first fixed magnetic ring (11) and the second fixed magnetic ring (12) are respectively sleeved at two ends of the magnetic fluid cavity (13), a through hole (14) used for being sleeved with a foot nail (6) is formed in the middle of the magnetic fluid cavity (13), the through hole (14) penetrates through the first fixed magnetic ring (11) and the second fixed magnetic ring (12), the rotatable magnetic ring (2) is positioned between the first fixed magnetic ring (11) and the second fixed magnetic ring (12), and is detachably sleeved outside the magnetic fluid cavity (13) and provided with a safety buckle (4); the magnetic blocks (5) are arranged on the rotatable magnetic ring (2), the first fixed magnetic ring (11) and the second fixed magnetic ring (12), the number of the magnetic blocks (5) is two, the number of the magnetic blocks (5) on the rotatable magnetic ring (2), the first fixed magnetic ring (11) and the second fixed magnetic ring (12) is equal, the two adjacent magnetic blocks (5) are in opposite attraction arrangement, and the arrangement modes of the magnetic blocks (5) at the corresponding positions of the first fixed magnetic ring (11) and the second fixed magnetic ring (12) are the same; the rotatable magnetic ring (2) comprises a first half ring (21) and a second half ring (22), and a switch (23) capable of being attracted is further arranged between the first half ring (21) and the second half ring (22).
2. The rotary magnetic fall protection device according to claim 1, characterized in that the cross-sectional areas of the rotatable magnetic ring (2), the first fixed magnetic ring (11), the second fixed magnetic ring (12) are all equal.
3. The rotary magnetic fall protection device according to claim 1 or 2, characterized in that the outer wall of the magnetic fluid chamber (13) is provided with a limit part (131), the limit part (131) is located between the first fixed magnetic ring (11) and the second fixed magnetic ring (12), and the rotatable magnetic ring (2) is located at the limit part (131).
4. A rotary magnetic fall protection device according to claim 3, characterized in that the number of magnets (5) in the first half-ring (21) and the second half-ring (22) is equal.
5. The rotary magnetic anti-falling protection device according to claim 1, wherein the magnetic base (1) further comprises two magnetizers (15), the two magnetizers (15) are respectively arranged at two distal ends of the first fixed magnetic ring (11) and the second fixed magnetic ring (12), and the through hole (14) is arranged through the magnetizers (15).
6. Rotary magnetic fall protection device according to claim 1, characterized in that the magneto-rheological body chamber (13) is sheathed with an elastic sealing membrane.
7. The rotary magnetic fall protection device according to claim 1, characterized in that the rotatable magnetic ring (2), the first fixed magnetic ring (11) and the second fixed magnetic ring (12) are permanent magnets.
8. The rotary magnetic anti-falling protection device according to claim 1, wherein the number of magnetic blocks (5) in the rotatable magnetic ring (2), the first fixed magnetic ring (11) and the second fixed magnetic ring (12) is 4-8.
9. Rotary magnetic fall protection device according to claim 1, characterized in that the safety catch (4) is also provided with a pull rope (41) threaded therein.
10. The rotary magnetic anti-falling protection device according to claim 1, wherein the first fixed magnetic ring (11) or the second fixed magnetic ring (12) is also provided with a safety buckle (4), and the length of a traction rope (41) penetrated by the safety buckle (4) on the first fixed magnetic ring (11) or the second fixed magnetic ring (12) is smaller than the length of the traction rope (41) penetrated by the safety buckle (4) on the rotatable magnetic ring (2).
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| CN202310994631.9A CN116865143B (en) | 2023-08-08 | 2023-08-08 | Rotary magnetic anti-falling protection device |
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| CN202310994631.9A CN116865143B (en) | 2023-08-08 | 2023-08-08 | Rotary magnetic anti-falling protection device |
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| CN116865143A (en) | 2023-10-10 |
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