Magnetic adsorption wheel assembly and assembling method

Abstract

The application discloses a magnetic adsorption wheel assembly and an assembling method. The magnetic adsorption wheel assembly comprises a rotating shaft, a first magnetic adsorption wheel module and a second magnetic adsorption wheel module on the rotating shaft. The first magnetic adsorption wheel module comprises a ring structure, a first permanent magnet arranged on the ring structure and a first and a second magnetic guide wheel. The second magnetic adsorption wheel module comprises a shaft sleeve, a second permanent magnet arranged on the shaft sleeve and a third magnetic guide wheel. The polarities of the two permanent magnets on the opposite sides are the same. N number of circumferentially equidistantly staggered counterbores and first fastening screw holes are arranged on the magnetic guide wheel. N number of circumferentially equidistantly staggered through holes and second fastening screw holes are arranged on the shaft sleeve. A first screw passes through the counterbores on the first / second magnetic guide wheel and is connected with the ring structure. A second screw passes through the counterbores on the third magnetic guide wheel, the through holes on the shaft sleeve and the first fastening screw holes on the second magnetic guide wheel. The assembling method comprises a mounting step between the two magnetic adsorption wheel modules. The application has the advantages of simple structure, convenient and fast assembling and high safety coefficient.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of magnetic adsorption wall climbing, and particularly relates to a magnetic adsorption wheel assembly and an assembling method. BACKGROUND

[0002] The magnetic adsorption wall climbing robot is a robot for working on a magnetically conductive wall surface, and relies on magnetic force to be adsorbed on the magnetically conductive wall surface and to move on the wall surface to achieve the working requirements. Among them, the adsorption is one of the key technologies of the robot. The commonly used adsorption device on the magnetic adsorption wall climbing robot at present is a magnetic adsorption wheel. Although the magnetic adsorption wheel has a simple structure, the following problems exist: 1) The strong magnetic adsorption force of the magnetic adsorption wheel is very large, and an additional clamping fixture is usually needed to operate during assembly, and the magnetic adsorption wheel is easy to be damaged or the permanent magnet (brittle material) is easy to be broken during disassembly. The assembly process is relatively complex, and the magnetic adsorption wheel is not easy to disassemble after assembly. 2) In order to ensure the stability and reliability of the adsorption, the adsorption force N of the magnetic adsorption wheel is generally large, which increases the difficulty of taking off (separating) the magnetic adsorption wheel from the adsorbed wall surface. Generally, the magnetic adsorption wheel is forcibly separated from the adsorbed wall surface by means of strong force or the magnetic adsorption force is offset by using a reverse magnetic field. Both methods have the problems of complex structure and cumbersome operation. 3) The magnetic adsorption wheel has strong magnetism, especially when used for welding and cleaning robots. The magnetic adsorption wheel inevitably adsorbs welding slag, iron filings, rust and other sundries. These sundries wrapped on the magnetic adsorption wheel will destroy the adsorption stability, and even change the outer diameter of the magnetic adsorption wheel and destroy the precision of motion control. SUMMARY

[0003] In order to overcome at least one of the deficiencies in the prior art, the present application provides a magnetic adsorption wheel assembly and an assembling method. The magnetic adsorption wheel assembly has a simple structure, is convenient and fast to assemble, and has a high safety factor.

[0004] In order to solve the problems existing in the prior art, the present application provides a magnetic adsorption wheel assembly, which comprises a rotating shaft, a first magnetic adsorption wheel module and a second magnetic adsorption wheel module are arranged on the rotating shaft.

[0005] The first magnetic adsorption wheel module comprises an annular structure arranged on the rotating shaft, a first permanent magnet arranged in a ring on the annular structure, a first magnetic guide wheel and a second magnetic guide wheel. The first magnetic guide wheel and the second magnetic guide wheel are located at opposite ends of the first permanent magnet and are fixedly connected with the annular structure. The second magnetic adsorption wheel module comprises a shaft sleeve sleeved on the rotating shaft, a second permanent magnet and a third magnetic guide wheel arranged in a ring on the shaft sleeve. The polarities of the opposite sides of the first permanent magnet and the second permanent magnet are the same.

[0006] The first magnetic guide wheel, the second magnetic guide wheel and the third magnetic guide wheel are each provided with N sink holes and N first tight thread holes, and the sink holes and the first tight thread holes are circumferentially equidistantly staggered; the shaft sleeve is provided with N through holes and N second tight thread holes, and the through holes and the second tight thread holes are circumferentially equidistantly staggered; N is a natural number greater than or equal to 2; the first tight thread hole on the third magnetic guide wheel corresponds to the second tight thread hole on the shaft sleeve;

[0007] The first threaded part is connected with the annular structure through the sink hole on the first magnetic guide wheel or the second magnetic guide wheel; the second threaded part is connected with the first tight thread hole on the second magnetic guide wheel through the sink hole on the third magnetic guide wheel, the through hole on the shaft sleeve and the second tight thread hole on the second magnetic guide wheel.

[0008] Further, the second magnetic adsorption wheel module is provided with two or more than two; the second magnetic adsorption wheel module is located on the same side or both sides of the first magnetic adsorption wheel module.

[0009] Further, the annular structure and the rotating shaft are an integral structure; or the annular structure and the rotating shaft are key connected.

[0010] Further, the magnetic adsorption wheel assembly further comprises a support frame, and the rotating shaft is rotatably installed on the support frame.

[0011] Further, the support frame is provided with a magnetic adsorption force adjusting device for adjusting the magnetic adsorption force between the first magnetic adsorption wheel module, the second magnetic adsorption wheel module and the working surface; the magnetic adsorption force adjusting device comprises a mounting frame arranged on one side of the support frame, a magnetic short circuit block located on the side of the mounting frame facing the rotating shaft, and an adjusting structure arranged on the mounting frame for driving the magnetic short circuit block to move towards or away from the direction of the first magnetic adsorption wheel module and the second magnetic adsorption wheel module.

[0012] Further, the adjusting structure comprises at least two adjusting screws arranged at intervals on the mounting frame, one end of the adjusting screw is threadedly connected with the magnetic short circuit block; the magnetic short circuit block is provided with an inner concave arc surface and an avoiding opening.

[0013] Further, the support frame is provided with an adsorption wheel cleaning device, and when the first magnetic adsorption wheel module and the second magnetic adsorption wheel module rotate, the adsorption wheel cleaning device is used for peeling off the sundries adsorbed on the first magnetic adsorption wheel module and the second magnetic adsorption wheel module and adsorbing and recycling the peeled sundries.

[0014] The embodiment of the present application also provides an assembling method of the magnetic adsorption wheel assembly, which is used for assembling the magnetic adsorption wheel assembly; the assembling method comprises an installation step between the second magnetic adsorption wheel module and the first magnetic adsorption wheel module; the installation step comprises:

[0015] S1, a headless fastening screw reserved in the second fastening threaded hole of the shaft sleeve is screwed, so that the end of the headless fastening screw extends from the shaft sleeve to the side of the first magnetic adsorption wheel module by a length A;

[0016] S2, the second magnetic adsorption wheel module is sleeved on the rotating shaft; the end of the headless fastening screw extends and abuts against the head of the first threaded part on the second magnetic conducting wheel, then the headless fastening screw is screwed, the second magnetic adsorption wheel module moves to the direction of the first magnetic adsorption wheel module until the second permanent magnet is adsorbed and attached to the second magnetic conducting wheel;

[0017] S3, the second threaded part is connected in sequence through the counterbore on the third magnetic conducting wheel, the through hole on the shaft sleeve and the first fastening threaded hole on the second magnetic conducting wheel.

[0018] Further, the assembling method also comprises an installation step of the first magnetic adsorption wheel module; the installation step comprises:

[0019] a, the first permanent magnet is installed on the annular structure, and one end surface of the first permanent magnet abuts against the end surface of the first limiting boss annularly arranged on the annular structure;

[0020] b, a fastening screw is screwed into the first fastening threaded hole of the second magnetic conducting wheel provided with a limiting boss avoiding groove, and the end of the fastening screw extends from the second magnetic conducting wheel to the side of the first permanent magnet by a length A;

[0021] c, the end of the extending end of the fastening screw abuts against one end surface of the annular structure, then the fastening screw is screwed, the second magnetic conducting wheel moves to the direction of the first permanent magnet and is finally adsorbed to the first permanent magnet, and the fastening screw is removed; the first threaded part is connected through the counterbore on the second magnetic conducting wheel and the annular structure;

[0022] d, a fastening screw is screwed into the first fastening threaded hole of the first magnetic conducting wheel, and the end of the fastening screw extends from the first magnetic conducting wheel to the side of the first permanent magnet by a length A;

[0023] e. Place the protruding end of the set screw against the other end face of the annular structure, and then screw the set screw. The first magnetic guide wheel moves toward the first permanent magnet and eventually attracts the first permanent magnet. Remove the set screw. Connect another first threaded piece through the countersunk hole on the first magnetic guide wheel to the annular structure.

[0024] Furthermore, the assembly method further includes an installation step for the second magnetic adsorption wheel module; the installation step includes:

[0025] f. The headless set screw is pre-screwed into the second set thread hole of the bushing, and the end face of the headless set screw is flush with the end face of the bushing facing the third magnetic wheel.

[0026] g. The second permanent magnet is installed on the bushing, and one end face of the second permanent magnet abuts against the end face of the second limiting boss circumferentially provided on the bushing;

[0027] h. Screw a set screw into the first set screw hole of the third magnetic guide wheel, and make the end of the set screw extend a set length A from the side of the third magnetic guide wheel toward the second permanent magnet;

[0028] i. Place the protruding end of the set screw against the end face of the headless set screw, and then screw the set screw. The third magnetic wheel moves toward the second permanent magnet and eventually attracts the second permanent magnet. Remove the set screw.

[0029] The beneficial effects achieved by adopting the above technical solution are as follows:

[0030] The magnetic adsorption wheel assembly in the application comprises a rotating shaft, the rotating shaft is provided with a first magnetic adsorption wheel module and a second magnetic adsorption wheel module; the first magnetic adsorption wheel module comprises an annular structure arranged on the rotating shaft, a first permanent magnet arranged on the annular structure, a first magnetic guide wheel and a second magnetic guide wheel, the first magnetic guide wheel and the second magnetic guide wheel are located at opposite ends of the first permanent magnet and are fixedly connected with the annular structure; the second magnetic adsorption wheel module comprises a shaft sleeve arranged on the rotating shaft, a second permanent magnet arranged on the shaft sleeve and a third magnetic guide wheel; the polarities of the opposite sides of the first permanent magnet and the second permanent magnet are the same; the first magnetic guide wheel, the second magnetic guide wheel and the third magnetic guide wheel are all provided with N blind holes and N first fixing screw holes, the blind holes and the first fixing screw holes are arranged in a circumferential direction and are staggered at equal intervals; the shaft sleeve is provided with N through holes and N second fixing screw holes, the through holes and the second fixing screw holes are arranged in a circumferential direction and are staggered at equal intervals; N is a natural number greater than or equal to 2; the first fixing screw hole on the third magnetic guide wheel corresponds to the second fixing screw hole on the shaft sleeve; a first screw passes through the blind hole on the first magnetic guide wheel or the second magnetic guide wheel and is connected with the annular structure; a second screw passes through the blind hole on the third magnetic guide wheel, the through hole on the shaft sleeve and the first fixing screw hole on the second magnetic guide wheel and is connected. The assembling method comprises a mounting step between the second magnetic adsorption wheel module and the first magnetic adsorption wheel module; the mounting step comprises: S1, screwing a headless fixing screw reserved in the second fixing screw hole of the shaft sleeve, so that the end of the headless fixing screw extends out of the side of the shaft sleeve facing the first magnetic adsorption wheel module by a certain length A; S2, sleeving the second magnetic adsorption wheel module on the rotating shaft; the end of the headless fixing screw extending out abuts against the head of the first screw on the second magnetic guide wheel, then the headless fixing screw is screwed, the second magnetic adsorption wheel module moves towards the first magnetic adsorption wheel module until the second permanent magnet is adsorbed and attached to the second magnetic guide wheel; S3, the second screw is connected by passing through the blind hole on the third magnetic guide wheel, the through hole on the shaft sleeve and the first fixing screw hole on the second magnetic guide wheel in sequence.

[0031] The first magnetic adsorption wheel module and the second magnetic adsorption wheel module in the application share a magnetic guide wheel to generate a magnetic circuit, so the structure is simple; in addition, by means of the headless fixing screw and the second fixing screw hole, the second magnetic adsorption wheel module can slowly move towards the first magnetic adsorption wheel module, so that the magnetic force between the two is stable and controllable, and the phenomenon that the second permanent magnet is broken or even injures people can be effectively avoided. The cooperation of the second screw and the first fixing screw hole realizes the fixed connection between the first magnetic adsorption wheel module and the second magnetic adsorption wheel module. In summary, the structure of the application is simple, the assembly is convenient, fast and safe. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative effort based on these drawings.

[0033] Figure 1 is a structural schematic view of a first embodiment of the magnetic adsorption wheel assembly of the present application;

[0034] Figure 2 is a sectional view of Figure 1 ;

[0035] Figure 3 is a structural schematic view of another state of Figure 1 ;

[0036] Figure 4 is an end face structural schematic view of the first magnetic guide wheel in Figure 3 ;

[0037] Figure 5 is an end face structural schematic view of the shaft sleeve in Figure 3 ;

[0038] Figure 6 is a sectional view of a second embodiment of the magnetic adsorption wheel assembly of the present application;

[0039] Figure 7 is a flow chart of the first and second magnetic adsorption wheel module installation steps in the assembly method of the magnetic adsorption wheel assembly of the present application;

[0040] Figure 8 is a flow chart of the first magnetic adsorption wheel module installation step;

[0041] Figure 9 is a flow chart of the second magnetic adsorption wheel module installation step;

[0042] In the drawings: 1-rotary shaft, 2-first magnetic adsorption wheel module, 21-annular structure, 22-first permanent magnet, 23-first magnetic guide wheel, 24-second magnetic guide wheel, 25-first flexible sleeve, 3-second magnetic adsorption wheel module, 31-shaft sleeve, 311-through hole, 312-second fixing screw hole, 313-headless fixing screw, 32-second permanent magnet, 33-third magnetic guide wheel, 34-second flexible sleeve, 4-counterbore, 5-first fixing screw hole, 6-first threaded part, 7-second threaded part, 8-supporting frame, 81-adsorption wheel cleaning device, 811-scraping knife, 812-magnetic adsorption part, 9-magnetic adsorption force adjusting device, 91-mounting frame, 92-magnetic short-circuit block, 921-internal concave circular arc surface, 922-avoidance opening, 93-adjusting screw, 10-working surface. DETAILED DESCRIPTION

[0043] In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and should not be used to limit the present application.

[0044] It should be noted that if the embodiments of the present application involve directional indications, the directional indications are only used to explain the relative position relationship, movement condition and the like between components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0045] In addition, if the embodiments of the present application involve descriptions of “first”, “second”, “third” and the like, the descriptions of “first”, “second”, “third” and the like are only for description purposes, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by “first”, “second” can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the present application.

[0046] By Figures 1 to 5 It is shown that the basic embodiment of the present application discloses a magnetic adsorption wheel assembly, which comprises a rotating shaft 1, a first magnetic adsorption wheel module 2 and a second magnetic adsorption wheel module 3 provided on the rotating shaft 1 and rotating synchronously with the rotating shaft 1; the first magnetic adsorption wheel module 2 comprises an annular structure 21 provided on the rotating shaft 1, a first permanent magnet 22 annularly provided on the annular structure 21, a first magnetic guide wheel 23 and a second magnetic guide wheel 24, the first magnetic guide wheel 23 and the second magnetic guide wheel 24 are located at opposite ends of the first permanent magnet 22 and are fixedly connected with the annular structure 21; the second magnetic adsorption wheel module 3 comprises a shaft sleeve 31 sleeved on the rotating shaft 1, a second permanent magnet 32 annularly provided on the shaft sleeve 31 and a third magnetic guide wheel 33; the polarities of opposite sides of the first permanent magnet 22 and the second permanent magnet 32 are the same; N number of counterbores 4 and N number of first fixing screw holes 5 are provided on the first magnetic guide wheel 23, the second magnetic guide wheel 24 and the third magnetic guide wheel 33 (the end face structures of the first magnetic guide wheel 23, the second magnetic guide wheel 24 and the third magnetic guide wheel 33 are the same, Figure 4Only the end face structure of the first magnetic guide wheel 23 is shown in the figure; the countersunk hole 4 and the first set threaded hole 5 are arranged alternately and circumferentially at equal intervals; the bushing 31 is provided with N through holes 311 and N second set threaded holes 312, and the through holes 311 and the second set threaded holes 312 are arranged alternately and circumferentially at equal intervals; N is a natural number greater than or equal to 2; the first set threaded hole 5 on the third magnetic guide wheel 33 corresponds to the second set threaded hole 312 on the bushing 31 for easy subsequent installation; the first threaded component 6 passes through the countersunk hole 4 on the first magnetic guide wheel 23 or the second magnetic guide wheel 24 and connects to the annular structure 21; the second threaded component 7 passes through the countersunk hole 4 on the third magnetic guide wheel 33 and the through hole 311 on the bushing 31 and connects to the first set threaded hole 5 on the second magnetic guide wheel 24.

[0047] With this configuration, the first magnetic adsorption wheel module 2 and the second magnetic adsorption wheel module 3 share a second magnetic guide wheel 24, which not only simplifies the structure and saves installation space, but also facilitates non-destructive assembly with the addition of a locking thread hole.

[0048] In the figure, N is preferably 3, meaning there are three countersunk holes 4 and three first set screw holes 5, with the angle between the countersunk hole 4 and the adjacent first set screw hole 5 being 60 degrees. There are also three through holes 311 and three second set screw holes 312, with the angle between the through holes 311 and the second set screw holes 312 being 60 degrees. In addition, both the bushing 31 and the rotating shaft 1 are made of non-magnetic material.

[0049] In one specific embodiment, by Figure 2 As shown, the annular structure 21 and the rotating shaft 1 are integrally formed. In another specific embodiment, the annular structure 21 is connected to the rotating shaft 1 by means of a flat key.

[0050] In another specific embodiment, the radial dimension of the magnetic guide wheel is 1-15 mm larger than the radial dimension of the permanent magnet; a flexible sleeve is provided around the outer periphery of the permanent magnet to increase the friction between it and the working surface 10 (i.e., a first flexible sleeve 25 is provided on the first permanent magnet 22, and a second flexible sleeve 34 is provided on the second permanent magnet 32), and the radial dimension of the flexible sleeve is 0.1-3 mm larger than the radial dimension of the magnetic guide wheel. The flexible sleeve is preferably made of a flexible material such as rubber or polyurethane. Different patterns can also be made on the outer periphery of the flexible sleeve to further increase the coefficient of friction. Furthermore, the flexible sleeve can be pre-manufactured independently and fitted onto the outer periphery of the permanent magnet during assembly; or it can be manufactured through a coating process after the overall assembly is completed.

[0051] In operation, the outer periphery of the first magnetic guide wheel 23 and the second magnetic guide wheel 24 is attached to the working surface 10, and forms a complete magnetic circuit with the first permanent magnet 22. The outer periphery of the second magnetic guide wheel 24 and the third magnetic guide wheel 33 is attached to the working surface 10, and forms another complete magnetic circuit with the second permanent magnet 32. The air gap and magnetic resistance are minimized, and the normal attractive force N along the working surface 10 is generated. The normal attractive force N is converted into the tangential friction force F through the friction between the flexible sleeve and the working surface 10, and then the driving force required for climbing on the working surface 10 is formed. The maximum static friction force F=uN, wherein u is the friction coefficient of the contact surface. The smooth steel-to-steel contact between the magnetic guide wheel and the working surface 10 has a very small friction coefficient (generally not greater than 0.15). The outer diameter of the flexible sleeve is slightly larger than the outer diameter of the magnetic guide wheel. Under the action of the normal attractive force N, the flexible sleeve is tightly pressed on the working surface 10 and slightly deformed, and the "surface contact" is formed between the flexible sleeve and the working surface 10, thereby effectively increasing the friction coefficient u (for example, the friction coefficient between rubber and steel is 0.6-0.8), and then sufficient and stable maximum static friction force F can be provided, and the occurrence of skidding is effectively avoided. In addition, the flexible sleeve is surrounded by three sides, and therefore is not easy to fall off under stress. In short, in the embodiment, the flexible sleeve has appropriate radial elasticity, reasonable tangential flexibility and strength, and can increase the friction to prevent skidding and is not easy to fall off.

[0052] In some embodiments, the magnetic adsorption wheel assembly further comprises a support frame 8, and the rotating shaft 1 is rotatably installed on the support frame 8. The support frame 8 can be selected as a U-shaped frame, an L-shaped frame, a T-shaped frame, etc. according to needs, and the support frame 8 can also be designed as a split structure for the convenience of installation of the rotating shaft 1. The top of the support frame 8 is provided with a mounting hole for installation on the wall-climbing robot, and the side is provided with a mounting hole for installation of the motor and the speed reducer. Figure 1 The support frame 8 shown in FIG. 1 is a U-shaped frame (preferably a split structure to facilitate assembly and disassembly of the rotating shaft 1 and the two magnetic adsorption wheel modules), and the two ends of the rotating shaft 1 are rotatably connected to the opposite sides of the support frame 8 by means of rotating bearings, and the support frame 8 is provided with a bearing cover for limiting the axial movement of the rotating bearing; in this way, the stability and reliability of the installation of the rotating shaft 1 can be ensured.

[0053] In one embodiment, the support frame 8 is provided with a magnetic attraction force adjusting device 9 for adjusting the magnetic attraction force between the first magnetic attraction wheel module 2, the second magnetic attraction wheel module 3 and the working surface 10; the magnetic attraction force adjusting device 9 comprises a mounting frame 91 arranged on one side of the support frame 8, a magnetic short-circuit block 92 (made of soft magnetic material) located on the side of the mounting frame 91 facing the rotary shaft 1, and an adjusting structure arranged on the mounting frame 91 for driving the magnetic short-circuit block 92 to move towards or away from the first magnetic attraction wheel module 2 and the second magnetic attraction wheel module 3. When it is necessary to firmly attract the magnetic attraction wheel assembly to the working surface 10, the magnetic short-circuit block 92 is moved away from the magnetic conductive wheel by means of the adjusting structure, at this time, the magnetic conductive wheels on both sides of the permanent magnet and the working surface 10 form the only magnetic circuit between the N pole and the S pole of the permanent magnet; at this time, the magnetic attraction force between the magnetic conductive wheel and the working surface 10 is the largest; when it is necessary to reduce the magnetic attraction force, the magnetic short-circuit block 92 is gradually moved close to the magnetic conductive wheel until it is in contact with the outer peripheral part by means of the adjusting structure, another parallel magnetic circuit is established between the magnetic short-circuit block 92 and the magnetic conductive wheels on both sides of the permanent magnet, which weakens the magnetic field density between the magnetic conductive wheel and the working surface 10, resulting in a decrease in the magnetic attraction force, and the magnetic attraction wheel assembly can be easily separated from the working surface 10. In short, this embodiment uses the "magnetic resistance minimum theory" of the magnetic field to adjust the size of the magnetic attraction force by increasing the parallel magnetic circuit, so as to facilitate the firm attraction of the magnetic attraction wheel assembly to the working surface 10 or the easy separation of the magnetic attraction wheel assembly from the working surface 10.

[0054] Optionally, the adjusting structure comprises at least two adjusting screws 93 arranged at intervals on the mounting frame 91, one end of the adjusting screw 93 being threadedly connected with the magnetic short-circuit block 92. By reasonably designing the contact surface of the magnetic short-circuit block 92 and the outer circle of the magnetic conductive wheel and adjusting the approaching distance of the two by screwing the adjusting screw 93, the size of the magnetic attraction force between the magnetic conductive wheel and the working surface 10 can be adjusted within a certain range, which can facilitate the separation of the magnetic attraction wheel assembly from the working surface 10 and avoid accidents that may be caused by the sudden disappearance of the magnetic attraction force. The size of the magnetic short-circuit block 92 should be matched with the size of the attraction force of the permanent magnet, and the cross-sectional area of the magnetic short-circuit block 92 should be increased with the increase of the magnetic force of the permanent magnet (i.e. positively correlated), so as to ensure that magnetic saturation does not occur. Preferably, the magnetic short-circuit block 92 is provided with an inner concave arc surface 921 for one-to-one matching with the outer peripheral wall of the plurality of magnetic conductive wheels and an avoiding opening 922 corresponding to the plurality of permanent magnets (the inner concave arc surface 921 shown in the figure has three, and the avoiding opening 922 has two); the arrangement of the inner concave arc surface 921 can increase the contact area with the magnetic conductive wheel, reduce the magnetic resistance and help to increase the adjustment range of the magnetic attraction force.

[0055] In addition, in some embodiments (not shown in the figure), the adjusting structure is a telescopic rod, an electric push rod or other linear driving structure, as long as it can drive the magnetic short-circuit block 92 to move towards or away from the magnetic conductive wheel, which is not limited here.

[0056] In addition, the structure of the mounting frame 91 is not unique, and the U-shaped structure shown in the figure is fixedly connected with both sides of the support frame 8 at both ends of the opening, so that the stability and reliability of the installation of the magnetic adsorption force adjusting device 9 can be ensured.

[0057] In another specific embodiment, the support frame 8 is provided with an adsorption wheel cleaning device 81, which is used to peel off the sundries adsorbed on the first magnetic adsorption wheel module 2 and the second magnetic adsorption wheel module 3 when the first magnetic adsorption wheel module 2 and the second magnetic adsorption wheel module 3 rotate, and adsorb and recycle the peeled sundries. The adsorption wheel cleaning device 81 includes a scraper 811 and a magnetic adsorption piece 812. The scraper 811 includes a fixed section and an inclined section connected with each other. The fixed section is mounted on the support frame 8, and the magnetic adsorption piece 812 is mounted on the fixed section. The inclined section is provided with a gap portion for avoiding the flexible sleeve (to avoid scratching the flexible sleeve) and a scraper edge abutting against the outer peripheral wall of the magnet guide wheel, and the inclination direction of the inclined section and the tangent direction of the abutting magnet guide wheel are at a set angle. In this way, some rust, welding slag, and scrap iron that are inevitably adsorbed on the magnet guide wheel can be removed in time, ensuring the adsorption stability, transmission reliability, and motion control accuracy of the magnetic adsorption wheel assembly.

[0058] Preferably, two adsorption wheel cleaning devices 81 are symmetrically arranged on the support frame 8 (with the center axis of the rotation shaft 1 as the center of symmetry). In this way, whether the magnet guide wheel rotates forward or reversely, some rust, welding slag, scrap iron, and sundries adsorbed on the magnet guide wheel can be cleaned by the corresponding adsorption wheel cleaning device 81, improving the cleaning effect of the sundries. The two adsorption wheel cleaning devices 81 can be selectively mounted above the support frame 8, or can be selectively mounted below the support frame 8 (close to the position of the adsorbed work surface 10, so that the sundries adsorbed from the work surface 10 can be removed more quickly and timely).

[0059] In some embodiments, the second magnetic adsorption wheel module 3 is provided with two or more than two; the second magnetic adsorption wheel module 3 is located on the same side or both sides of the first magnetic adsorption wheel module 2; the polarities of the second permanent magnets 32 on the opposite sides of the adjacent two second magnetic adsorption wheel modules 3 are the same. Figure 6 In the specific embodiment shown, the second magnetic adsorption wheel module 3 is provided with two, which are located on the right side of the first magnetic adsorption wheel module 2. The installation position and number of the second magnetic adsorption wheel module 3 can also be selected as needed, which will not be listed one by one here.

[0060] The embodiment of the application also discloses an assembly method of the magnetic adsorption wheel assembly, which is used for assembling the magnetic adsorption wheel assembly; the assembly method includes an installation step between the second magnetic adsorption wheel module 3 and the first magnetic adsorption wheel module 2; the installation step is performed by Figure 7 As shown, the installation step includes:

[0061] S1, screw the headless set screw 313 reserved in the second set screw hole 312 of the shaft sleeve 31, so that the end of the headless set screw 313 extends out of the shaft sleeve 31 by a certain length A (5-10 mm, the specific size value is adjusted according to the suction force of the permanent magnet) from the side of the first magnetic adsorption wheel module 2.

[0062] S2, the second magnetic adsorption wheel module 3 is sleeved on the rotating shaft 1; the end of the headless set screw 313 extends out and abuts against the head of the first threaded part 6 on the second magnetic conducting wheel 24, and then the headless set screw 313 is screwed, the second magnetic adsorption wheel module 3 moves towards the first magnetic adsorption wheel module 2 until the second permanent magnet 32 is adsorbed and attached to the second magnetic conducting wheel 24.

[0063] With the headless set screw 313 and the second set screw hole 312, the second magnetic adsorption wheel module 3 can slowly move towards the first magnetic adsorption wheel module 2, so that the magnetic force between the two is stable and controllable, and the phenomenon of the second permanent magnet 32 being broken or even injured can be effectively avoided.

[0064] S3, the second threaded part 7 is connected in sequence through the counterbore 4 on the third magnetic conducting wheel 33, the through hole 311 on the shaft sleeve 31 and the first set screw hole 5 on the second magnetic conducting wheel 24. The fixed assembly of the second magnetic adsorption wheel module 3 and the first magnetic adsorption wheel module 2 on the rotating shaft 1 is completed.

[0065] When disassembling, the second threaded part 7 is removed first, then the headless set screw 313 is screwed, and the second magnetic adsorption wheel module 3 moves as a whole in the direction away from the first magnetic adsorption wheel module 2. The second magnetic adsorption wheel module 3 is separated from the first magnetic adsorption wheel module 2, and the second magnetic adsorption wheel module 3 is removed from the rotating shaft 1.

[0066] In another specific embodiment, the assembly method of the magnetic adsorption wheel assembly further includes a mounting step of the first magnetic adsorption wheel module 2 itself; the mounting step includes: Figure 8 As shown in the figure, the mounting step includes:

[0067] a, the first permanent magnet 22 is installed on the annular structure 21, and one end surface of the first permanent magnet 22 abuts against the end surface of the first limiting boss annularly arranged on the annular structure 21. If the first flexible sleeve 25 is a separate part, it can be directly installed on the first permanent magnet 22 at this step.

[0068] b, screw the set screw into the first set screw hole 5 of the second magnetic conducting wheel 24 provided with a limiting boss avoiding slot, and make the end of the set screw extend out of the second magnetic conducting wheel 24 by a certain length A from the side of the first permanent magnet 22.

[0069] c. Place the protruding end of the set screw against one end face of the annular structure 21, and then tighten the set screw. The second magnetic wheel 24 moves toward the first permanent magnet 22 and eventually attracts the first permanent magnet 22. Remove the set screw. Pass the first threaded part 6 through the countersunk hole 4 on the second magnetic wheel 24 and connect it to the annular structure 21 (i.e., the threaded mounting hole on it).

[0070] When tightening the set screw, the position of the second magnetic guide wheel 24 needs to be adjusted in real time to ensure that its countersunk hole 4 is aligned with the threaded mounting hole on the annular structure 21.

[0071] When the second magnetic guide wheel 24 approaches the first permanent magnet 22, the magnetic attraction between them causes them to tend to approach each other at an accelerated pace. However, the first permanent magnet 22 is restricted by the limiting boss and cannot move freely to one side. The set screw installed on the second magnetic guide wheel 24 is also pressed against the end face of the annular structure 21 and cannot move freely to the other side. This ensures that the first permanent magnet 22 and the second magnetic guide wheel 24 maintain a distance of about 10mm and do not immediately come into contact. By slowly adjusting the distance between the second magnetic guide wheel 24 and the first permanent magnet 22 with the set screw, the first permanent magnet 22 can be prevented from being broken by the rapidly approaching second magnetic guide wheel 24.

[0072] d. Screw a set screw (which can be directly removed from the second magnetic wheel 24) into the first set screw thread hole 5 of the first magnetic wheel 23, and make the end of the set screw extend a set length A from the side of the first magnetic wheel 23 toward the first permanent magnet 22.

[0073] e. Place the protruding end of the set screw against the other end face of the annular structure 21, and then tighten the set screw. The first magnetic wheel 23 moves toward the first permanent magnet 22 and eventually attracts the first permanent magnet 22. Remove the set screw. Connect another first threaded part 6 through the countersunk hole 4 on the first magnetic wheel 23 to the annular structure 21 (i.e., the threaded mounting hole on it).

[0074] When tightening the set screw, the position of the first magnetic guide wheel 23 needs to be adjusted in real time to ensure that its countersunk hole 4 is aligned with the threaded mounting hole on the annular structure 21.

[0075] When the first magnetic adsorption wheel module 2 is disassembled, 1) the first threaded fastener 6 on the annular structure 21 of the first magnetic conductive wheel 23 and the second magnetic conductive wheel 24 is removed; 2) the first magnetic conductive wheel 23 is disassembled from the annular structure 21 by means of a set screw. Specifically, the set screw is screwed into the first set screw hole 5 of the first magnetic conductive wheel 23; the end of the set screw is abutted against the annular structure 21, and then the set screw is screwed, so that the first magnetic conductive wheel 23 moves away from the first permanent magnet 22 and is finally separated from the first permanent magnet 22. Since the first permanent magnet 22 is adsorbed and fixed with the second magnetic conductive wheel 24 at this time, when the set screw is screwed, the first permanent magnet 22 can be easily separated from the first magnetic conductive wheel 23 by pressing the first permanent magnet 22 with the hand. 3) The second magnetic conductive wheel 24 is disassembled from the annular structure 21 by means of a set screw. Specifically, the set screw is screwed into the first set screw hole 5 of the second magnetic conductive wheel 24; the end of the set screw is abutted against the annular structure 21, and then the set screw is screwed, so that the second magnetic conductive wheel 24 moves away from the first permanent magnet 22 and is finally separated from the first permanent magnet 22. Since the first permanent magnet 22 is limited by the first limiting boss; therefore, when the set screw is screwed, the first permanent magnet 22 will not move with the second magnetic conductive wheel 24, which is convenient for disassembly. 4) The first permanent magnet 22 is removed from the annular structure 21. The first magnetic adsorption wheel module is disassembled by the above method, which can facilitate timely replacement of damaged permanent magnets; and the above disassembly method will not damage the permanent magnets and the magnetic conductive wheel. When the permanent magnet is demagnetized due to harsh environment, it can be reused after being remagnetized, which saves maintenance cost.

[0076] In another specific embodiment, the assembly method of the magnetic adsorption wheel assembly further includes a mounting step of the second magnetic adsorption wheel module 3 itself; from Figure 9 As shown in the figure, the mounting step includes:

[0077] f. A headless set screw 313 is pre-screwed into the second set screw hole 312 of the shaft sleeve 31, and the end face of the headless set screw 313 is flush with the end face of the shaft sleeve 31 facing the third magnetic conductive wheel 33.

[0078] g. The second permanent magnet 32 is mounted on the shaft sleeve 31, and the end face of the second permanent magnet 32 abuts against the end face of the second limiting boss annularly arranged on the shaft sleeve 31.

[0079] h. A set screw is screwed into the first set screw hole 5 of the third magnetic conductive wheel 33 (which is provided with a limiting boss avoiding slot), and the end of the set screw extends from one side of the third magnetic conductive wheel 33 towards the second permanent magnet 32 by a certain length A.

[0080] i. Place the protruding end of the set screw against the end face of the headless set screw 313, and then tighten the set screw. The third magnetic wheel 33 moves toward the second permanent magnet 32 ​​and eventually attracts the second permanent magnet 32. Remove the set screw.

[0081] When the second magnetic adsorption wheel module 3 is disassembled, a set screw is screwed into the first set screw threaded hole 5 of the third magnetic guide wheel 33. The protruding end of the set screw rests against the end face of the headless set screw 313. Then, the set screw is tightened, and the third magnetic guide wheel 33 moves away from the second permanent magnet 32; the third magnetic guide wheel 33 separates from the second permanent magnet 32. Disassembling the second magnetic adsorption wheel module using the above method facilitates timely replacement of damaged permanent magnets. Furthermore, the disassembly method does not damage the permanent magnets or the magnetic guide wheel. When the permanent magnets demagnetize due to harsh environments, they can be remagnetized and reused, saving maintenance costs.

[0082] Based on the installation steps of the second magnetic adsorption wheel module 3 and the first magnetic adsorption wheel module 2 described above, those skilled in the art can easily deduce... Figure 6 The installation steps between the two second magnetic adsorption wheel modules 3 are not described in detail here.

[0083] The various embodiments in this specification are described in a progressive or parallel manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referred to each other.

[0084] In summary, this invention is not only convenient and quick to assemble with a high safety factor, but also allows for easy adjustment of the magnetic attraction force between the magnetic roller and the working surface by setting a magnetic attraction force adjustment device, facilitating the detachment of the magnetic attraction wheel from the working wall surface. Furthermore, the flexible sleeve, mounted on the permanent magnet, does not affect the magnetic attraction force; and the appropriately sized flexible sleeve ensures contact with the working surface, increasing the coefficient of friction, preventing slippage, and preventing detachment. Moreover, the adsorption wheel cleaning device promptly removes debris adsorbed on the magnetic roller, ensuring the adsorption stability of the magnetic attraction wheel assembly, the reliability of transmission, and the accuracy of motion control. Finally,

[0085] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A magnetic attraction wheel assembly, characterized by, The application relates to a magnetic adsorption wheel assembly. The first magnetic adsorption wheel module comprises a ring structure arranged on the rotating shaft, a first permanent magnet arranged on the ring structure, a first magnetic guide wheel and a second magnetic guide wheel, the first magnetic guide wheel and the second magnetic guide wheel are arranged at opposite ends of the first permanent magnet and are fixedly connected with the ring structure; the second magnetic adsorption wheel module comprises a shaft sleeve arranged on the rotating shaft, a second permanent magnet arranged on the shaft sleeve and a third magnetic guide wheel; the first permanent magnet and the second permanent magnet have the same polarity on the opposite sides. The first magnetic guide wheel, the second magnetic guide wheel and the third magnetic guide wheel are all provided with N sink holes and N first fixing screw holes, the sink holes and the first fixing screw holes are arranged in a circumferential equidistant staggered mode; the shaft sleeve is provided with N through holes and N second fixing screw holes, the through holes and the second fixing screw holes are arranged in a circumferential equidistant staggered mode; N is a natural number greater than or equal to 2; the first fixing screw hole on the third magnetic guide wheel corresponds to the second fixing screw hole on the shaft sleeve. A first screw passes through the sink hole on the first magnetic guide wheel or the second magnetic guide wheel and is connected with the ring structure. A second screw passes through the sink hole on the third magnetic guide wheel, the through hole on the shaft sleeve and the first fixing screw hole on the second magnetic guide wheel and is connected. The application further relates to an assembling method of the magnetic adsorption wheel assembly. The assembling method comprises an installation step between the second magnetic adsorption wheel module and the first magnetic adsorption wheel module; the installation step comprises: S1, a headless fixing screw reserved in the second fixing screw hole on the shaft sleeve is screwed, and the end of the headless fixing screw is arranged to extend from the shaft sleeve to the side of the first magnetic adsorption wheel module by a certain length A; S2, the second magnetic adsorption wheel module is arranged on the rotating shaft; the end of the headless fixing screw is abutted against the head of the first screw on the second magnetic guide wheel, then the headless fixing screw is screwed, and the second magnetic adsorption wheel module moves to the first magnetic adsorption wheel module until the second permanent magnet is adsorbed and attached to the second magnetic guide wheel; S3, the second screw is sequentially connected through the sink hole on the third magnetic guide wheel, the through hole on the shaft sleeve and the first fixing screw hole on the second magnetic guide wheel; The assembling method further comprises an installation step of the first magnetic adsorption wheel module; the installation step comprises: a, the first permanent magnet is arranged on the ring structure, and one end surface of the first permanent magnet is abutted against the end surface of the first limiting boss arranged on the ring structure; b, a fixing screw is screwed into the first fixing screw hole of the second magnetic guide wheel provided with a limiting boss avoiding groove, and the end of the fixing screw is arranged to extend from the second magnetic guide wheel to the side of the first permanent magnet by a certain length A. c. Place the protruding end of the set screw against one end face of the annular structure, and then screw the set screw. The second magnetic wheel moves toward the first permanent magnet and eventually attracts the first permanent magnet. Remove the set screw. Pass the first threaded part through the countersunk hole on the second magnetic wheel and connect it to the annular structure. d. Screw a set screw into the first set screw thread hole of the first magnetic guide wheel, and make the end of the set screw extend a set length A from the side of the first magnetic guide wheel toward the first permanent magnet; e. Place the protruding end of the set screw against the other end face of the annular structure, and then screw the set screw. The first magnetic guide wheel moves toward the first permanent magnet and eventually attracts the first permanent magnet. Remove the set screw. Connect another first threaded piece through the countersunk hole on the first magnetic guide wheel to the annular structure.

2. The magnetic attraction wheel assembly of claim 1, wherein, The second magnetic adsorption wheel module is provided in two or more parts; the second magnetic adsorption wheel module is located on the same side or both sides of the first magnetic adsorption wheel module.

3. The magnetic attraction wheel assembly of claim 1, wherein, The annular structure and the rotary shaft are integrally formed; or, the annular structure and the rotary shaft are keyed together.

4. The magnetic attraction wheel assembly of claim 1, wherein, The magnetic adsorption wheel assembly also includes a support frame, on which the rotary shaft is rotatably mounted.

5. The magnetic attraction wheel assembly of claim 4, wherein, The support frame is provided with a magnetic adsorption force adjustment device for adjusting the magnetic adsorption force between the first magnetic adsorption wheel module, the second magnetic adsorption wheel module and the working surface; the magnetic adsorption force adjustment device includes a mounting frame disposed on one side of the support frame, a magnetic short-circuit block located on the side of the mounting frame facing the rotating shaft, and an adjustment structure disposed on the mounting frame for driving the magnetic short-circuit block to move toward or away from the first magnetic adsorption wheel module and the second magnetic adsorption wheel module.

6. The magnetic attraction wheel assembly of claim 5, wherein, The adjustment structure includes at least two adjusting screws spaced apart on the mounting bracket, one end of which is threadedly connected to the magnetic short-circuit block; the magnetic short-circuit block is provided with a concave arc surface and a clearance opening.

7. The magnetic attraction wheel assembly of claim 4, wherein, The support frame is equipped with an adsorption wheel cleaning device. When the first magnetic adsorption wheel module and the second magnetic adsorption wheel module rotate, the adsorption wheel cleaning device is used to peel off the debris adsorbed on the first magnetic adsorption wheel module and the second magnetic adsorption wheel module and adsorb and recycle the peeled debris.

8. The magnetic attraction wheel assembly of claim 1, wherein, The assembly method further includes an installation step for the second magnetic adsorption wheel module; the installation step includes: f. The headless set screw is pre-screwed into the second set thread hole of the bushing, and the end face of the headless set screw is flush with the end face of the bushing facing the third magnetic wheel. g. The second permanent magnet is installed on the bushing, and one end face of the second permanent magnet abuts against the end face of the second limiting boss circumferentially provided on the bushing; h. Screw a set screw into the first set screw hole of the third magnetic guide wheel, and make the end of the set screw extend a set length A from the side of the third magnetic guide wheel toward the second permanent magnet; i. Place the protruding end of the set screw against the end face of the headless set screw, and then screw the set screw. The third magnetic wheel moves toward the second permanent magnet and eventually attracts the second permanent magnet. Remove the set screw.

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