阅读说明：本技术 一种适应多种立面的磁吸附爬壁机器人 (Magnetic adsorption wall-climbing robot suitable for multiple vertical surfaces ) 是由 徐林森 吕志朋 刘进福 刘志鹏 龙杰 于 2021-10-26 设计创作，主要内容包括：本发明公开一种适应多种立面的磁吸附爬壁机器人,包括支撑车架,所述支撑车架包括前主体梁、后主体梁、连接关节；所述支撑车架左右两侧分别设有两套分体柔性履带行走机构,每个所述分体柔性履带行走机构相对于支撑车架有两个互相垂直的转动自由度；所述支撑车架前端左右两侧分别设有壁面过渡磁轮装置,所述壁面壁面过渡磁轮装置包括与所述支撑车架固定连接的数字舵机,所述数字舵机连接舵机盘,所述舵机盘连接磁轮内侧支撑板,越障磁轮通过销连接在所述磁轮内侧支撑板与磁轮外侧支撑板之间；在复杂的变曲率导磁壁面上具有良好的自适应的能力,具有良好的负载能力和运动灵活性,并且能够实现在内外直角不同的壁面进行转换功能。(The invention discloses a magnetic adsorption wall-climbing robot suitable for multiple vertical surfaces, which comprises a supporting frame, wherein the supporting frame comprises a front main body beam, a rear main body beam and a connecting joint; two sets of split flexible crawler traveling mechanisms are respectively arranged on the left side and the right side of the support frame, and each split flexible crawler traveling mechanism has two mutually perpendicular rotational degrees of freedom relative to the support frame; wall surface transition magnetic wheel devices are respectively arranged on the left side and the right side of the front end of the supporting frame and comprise digital steering engines fixedly connected with the supporting frame, the digital steering engines are connected with steering engine disks, the steering engine disks are connected with magnetic wheel inner side supporting plates, and obstacle crossing magnetic wheels are connected between the magnetic wheel inner side supporting plates and magnetic wheel outer side supporting plates through pins; the variable-curvature magnetic conduction wall surface has good self-adaptive capacity, good load capacity and motion flexibility, and can realize the function of converting wall surfaces with different inner and outer right angles.)

1. The magnetic adsorption wall-climbing robot suitable for multiple vertical surfaces is characterized by comprising a supporting frame (1), wherein the supporting frame (1) comprises a front main body beam (11) and a rear main body beam (15) connected with the front main body beam (11) through a front beam and rear beam connecting joint (14), and the front main body beam (11) and the rear main body beam (15) are symmetrically connected with a pair of connecting joints (12);

two sets of split flexible crawler traveling mechanisms (2) are respectively arranged on the left side and the right side of the supporting frame (1), the split flexible crawler traveling mechanisms (2) are connected with the supporting frame (1) through the connecting joints (12), and each split flexible crawler traveling mechanism (2) has two mutually perpendicular rotational degrees of freedom relative to the supporting frame (1);

support frame (1) front end left and right sides and be equipped with wall transition magnetic wheel device (3) respectively, wall transition magnetic wheel device (3) include with support frame (1) fixed connection's digital steering wheel (31), steering wheel dish (32) is connected in digital steering wheel (31), steering wheel dish (32) are connected magnetic wheel inboard backup pad (34), hinder magnetic wheel (33) more through the pin junction in between magnetic wheel inboard backup pad (34) and magnetic wheel outside backup pad (35).

2. The magnetic adsorption wall-climbing robot adapting to multiple vertical surfaces of claim 1 is characterized in that the split flexible crawler traveling mechanism (2) comprises a crawler magnetic adsorption device (22) and a connecting side plate (21) fixedly connected with the crawler magnetic adsorption device (22), wherein the connecting side plate (21) is fixedly connected with the connecting joint (12);

the crawler magnetic adsorption device (22) comprises a crawler (221), the crawler (221) is connected with a driving wheel (222) and a driven wheel (223) in a meshed mode, and a plurality of permanent magnets (225) are arranged on the crawler (221); the driving wheel (222) is connected with the connecting side plate (21) through a front wheel support (24), and the driven wheel (223) is connected with the connecting side plate (21) through a rear wheel support (25).

3. The magnetic adsorption wall-climbing robot adapting to multiple vertical surfaces of claim 2 is characterized in that a motor module (23) is connected to a front wheel support (24) of the driving wheel (222), a track tensioning device (4) is connected to a rear wheel support (25) of the driven wheel (223), the track tensioning device (4) comprises a stop block (41) fixed on the inner side of the connecting side plate (21), a tensioning bolt (43) is in threaded connection with the stop block (41), a tensioning block (42) is connected to one end of the tensioning bolt (43), the tensioning block (42) is fixed with the rear wheel support (25) through two guide bolts (44), and a guide groove (45) for the guide bolt (44) to pass through is formed in the connecting side plate (21).

4. The magnetic adsorption wall-climbing robot adapting to multiple vertical surfaces of claim 2 is characterized in that a through hole is formed in the center of the permanent magnet (225), a sponge gasket (226) is arranged on the outer side of the permanent magnet (225), a mounting hole is formed in the crawler belt (221), and a fastening bolt (48) is arranged to sequentially penetrate through the sponge gasket (226), the through hole of the permanent magnet (225) and the mounting hole of the crawler belt (221) and then is connected with a screwing avoiding nut (49).

5. The magnetic adsorption wall climbing robot adapting to multiple vertical surfaces as claimed in claim 4, wherein an annular avoiding groove (224) for the avoiding nut (49) is arranged between the driving wheel (222) and the driven wheel (223).

6. The magnetic adsorption wall-climbing robot adapting to multiple vertical surfaces of claim 3, wherein the motor module (23) comprises a brush direct current motor (231), a planetary gear reducer (232) and a reducer flange (233), the reducer flange (233) is connected with the connecting side plate (21), and an output shaft of the planetary gear reducer (232) is connected with the driving wheel (222).

7. The magnetic adsorption wall-climbing robot adapting to multiple vertical surfaces of claim 2, wherein the connecting joint (12) comprises a first rotating shaft (122) and a second rotating shaft (123) which are perpendicular to each other, the second rotating shaft (123) rotates around the first rotating shaft (122), and the connecting side plate (21) is connected to a connecting side plate bearing seat (125) of the second rotating shaft (123).

8. The magnetic adsorption wall-climbing robot adapting to multiple vertical surfaces of claim 1, wherein the front and rear beam connecting joints (14) are connected with the front main beam (11) through shaft bases (141), the front and rear beam connecting joints (14) are connected with front and rear beam connecting bolts (143) through rotating shafts (142) and shaft sleeves (144), and threaded holes matched with the front and rear beam connecting bolts (143) are formed in the end surface of the rear main beam (15).

9. The magnetic adsorption wall-climbing robot adapting to multiple vertical surfaces of claim 1, comprising two adaptive universal magnetic wheel assemblies (6) symmetrically fixed at two sides of the rear end of the robot, wherein each adaptive universal magnetic wheel assembly (6) comprises: the device comprises a wheel frame (61), a universal magnetic wheel (63), four compression springs (64), four self-adaptive guide posts (65), a connecting side plate wheel frame (62), a wheel mounting plate (66) and an adjusting screw (67); the connecting side plate wheel frame (62) is fixed on the connecting side plate (21) through screws, the wheel frame (61) is also connected with the connecting side plate wheel frame (62) through screws, the compression spring is sleeved on the outer side of the self-adaptive guide pillar (65), one end of the self-adaptive guide pillar (65) is fixed with the wheel mounting plate (66) in a threaded mode, the other end of the self-adaptive guide pillar passes through a through hole of the wheel frame (61), and the adjusting screw (67) is in threaded connection with the upper end of the self-adaptive guide pillar (65).

10. The magnetic adsorption wall-climbing robot adapting to multiple vertical surfaces of claim 1, wherein a detection device (5) and an appliance box body (53) are mounted on the front main body beam (11), the detection device (5) comprises a camera (51) and a camera bracket (52), the camera bracket (52) and the appliance box body (53) are fastened on the front main body beam (11) in a buckling manner, and the appliance box body (53) comprises a switch power supply (531), a power supply module (532) and a signal transmission device (533).

Technical Field

The invention relates to the technical field of wall climbing robots, in particular to a magnetic adsorption wall climbing robot suitable for multiple vertical surfaces.

Background

Every year, a great deal of news about the distress of high-altitude operation exists, and tragedies are not in existence any time. The wall-climbing robot is an important branch in the field of robots, is a special robot which combines the adsorption technology with the robot moving function, can flexibly move on a vertical wall surface, and replaces workers to complete various operation tasks under the limit condition.

The adsorption modes of the wall-climbing robot mainly include negative pressure adsorption, positive pressure propulsion, bionic adsorption, magnetic adsorption and the like. The negative pressure adsorption is not limited by working conditions and working media, but when the adsorption wall surface has cracks or is rough, air leakage is easy to occur, and the falling risk is caused. The positive pressure propulsion has strict requirements on the size and weight of the robot, the bionic adsorption utilizes molecular force between contact surfaces of various objects for adsorption, but the load is very small, and the bionic adsorption is not suitable for being used as an industrial scene due to the fact that the structure is exquisite. The permanent magnetic adsorption type wall-climbing robot is stable and reliable in magnetic adsorption force, and does not need to provide extra energy for the adsorption mechanism, so that the permanent magnetic adsorption type wall-climbing robot is widely applied to the operation environment with the wall surface made of magnetic materials.

The wall-climbing robot adopts wheel type and crawler type moving mechanisms in many cases. The crawler-type moving mechanism is an extension of a wheel-type moving mechanism, and the crawler itself plays a role in continuously paving the road for the wheels. The wheel type movement efficiency is high, the structure is simple, and the control is convenient. The crawler-type mechanism has good cross-country maneuverability, and the performances of climbing, crossing ditches and the like are superior to those of a wheel-type moving mechanism. The existing magnetic adsorption robot is large and heavy in size, cannot adapt to crawling of walls in narrow space, is insufficient in adsorption force, does not have an obstacle crossing function, and cannot adapt to various complex walls with unevenness and the like.

In the application of industrial scenes, the wall surface is mostly in an irregular shape, like the fields of ships, petrochemical storage tanks and wind power towers, the surface appearance of the wall surface is uneven, and the curvature change range is large. For the magnetic adsorption wall-climbing robot running on the surface, the air gap between the adsorption device and the magnetic conduction wall surface can be changed, so that the magnetic adsorption force is unstable, and the load capacity of the wall-climbing robot is greatly influenced. Because the shape of the magnetic conduction wall surface is irregular and uneven, the motion performance of the wall-climbing robot can be influenced, so that the wall-climbing robot running on the magnetic conduction wall surfaces of various complex vertical surfaces is required to have strong load capacity and good motion flexibility, and simultaneously has good self-adaptive capacity to different magnetic conduction wall surfaces. In order to ensure that the wall-climbing robot can stably adsorb and climb on the variable-curvature magnetic conduction wall surface under the working load, and the conditions of adsorption failure such as gliding, falling and the like can not occur. Therefore, various studies on the vertical surface self-adaptation are developed to ensure that the wall-climbing robot moves in all directions on an intricate and uneven wall surface. In a severe working environment, it is not always necessary to work on one wall surface, and there is a possibility that work is required even in a scene such as a ceiling, and therefore it is also necessary to realize a transitional wall surface function of the wall climbing robot. Because the wall transition function is complex to realize, related research is less, and mature products are not appeared. Through the change of the included angle between the two sections of structures, the reliability of the wall surface transition function is improved, and the wall surface transition can be realized.

For example, a chinese patent application No. CN201910447028.2 in 2019, month 07 and 12, discloses a wall-climbing robot with variable curvature adaptive capability, which includes a frame and a pair of crawler traveling modules disposed on two sides of the frame, and the crawler traveling modules are connected to the frame through a connecting joint, so that each crawler traveling module has two mutually perpendicular rotational degrees of freedom with respect to the frame. The crawler belt walking module comprises a permanent magnet adsorption plate, the permanent magnet adsorption plate and the walking supporting wheel have a rotational degree of freedom around the axis direction of the swing shaft, when the wall climbing robot moves on the variable-curvature magnetic conduction wall surface, the three degrees of freedom enable the crawler belt to be attached to the magnetic conduction wall surface through the permanent magnet adsorption plate and the walking supporting wheel, so that the permanent magnet adsorption plate of the wall climbing robot can automatically adjust the posture of the permanent magnet adsorption plate according to the situation of the walking magnetic conduction wall surface, the working air gap between each permanent magnet adsorption plate and the magnetic conduction wall surface is guaranteed to be changed within an allowable range, the reliable walking of the wall climbing robot on the variable-curvature magnetic conduction surface is guaranteed, and meanwhile, the flexibility of the walking is also achieved.

For example, a single-degree-of-freedom cylindrical climbing robot is disclosed in chinese patent application No. CN202010886875.1, 12/01/2020, and relates to a single-degree-of-freedom cylindrical climbing robot, which comprises a trunk component, a magnetic adsorption component, a terminal driving component for changing the magnetic force of the magnetic adsorption component, and a swinging component for changing the included angles between a plurality of groups of magnetic adsorption units, wherein the trunk component comprises a first motor and two groups of first connecting rods, one end of each group of first connecting rods is connected to two output ends of the first motor, the other ends of the two groups of first connecting rods are hinged to a second connecting rod, and the second connecting rod is connected to a base; the magnetic adsorption unit comprises a magnetic core magnetized in the radial direction and a plurality of groups of permanent magnets surrounding the periphery of the magnetic core, and the permanent magnets are connected in a heteropolar manner in sequence; the tail end driving assembly is installed on the base, the magnetic core is connected to an output shaft of the tail end driving assembly through a universal joint, and the swinging assembly is connected between the magnetic adsorption assembly and the base.

The existing wall climbing robot has at least one of the following defects: (1) the motion flexibility is good, but the load capacity is not strong, typically, a magnetic wheel type wall climbing robot is adopted; (2) the load capacity is strong, but the motion flexibility is poor, typical like crawler-type magnetic adsorption wall climbing robot, its steering capacity is poor, the turning half is through greatly; (3) the adaptability to complex space curved surfaces with complex surface appearances, small curvature half-diameter and large curvature change range is poor.

Disclosure of Invention

The invention aims to solve the problems in the prior art, and provides a magnetic adsorption wall-climbing robot suitable for various vertical surfaces, which has good self-adaptive capacity on a complex variable-curvature magnetic conduction wall surface, good load capacity and motion flexibility, and can realize the function of converting wall surfaces with different inner and outer right angles.

In order to achieve the purpose, the invention adopts the technical scheme that:

a magnetic adsorption wall-climbing robot suitable for multiple vertical surfaces comprises a supporting frame, wherein the supporting frame comprises a front main body beam and a rear main body beam, the front main body beam is connected with the front main body beam through a front beam connecting joint and a rear main body beam through a rear beam connecting joint, and the front main body beam and the rear main body beam are symmetrically connected with a pair of connecting joints;

the left side and the right side of the support frame are respectively provided with two sets of split flexible crawler traveling mechanisms, the split flexible crawler traveling mechanisms are connected with the support frame through the connecting joints, and each split flexible crawler traveling mechanism has two mutually perpendicular rotational degrees of freedom relative to the support frame;

the support frame is characterized in that wall surface transition magnetic wheel devices are respectively arranged on the left side and the right side of the front end of the support frame, the wall surface transition magnetic wheel devices comprise digital steering gears fixedly connected with the support frame, the digital steering gears are connected with steering gear disks, inner supporting plates of the magnetic wheels are fastened with the steering gear disks through circumferential screws, and obstacle-surmounting magnetic wheels are connected between inner supporting plates of the magnetic wheels and outer supporting plates of the magnetic wheels through pins.

The wall surface transition magnetic wheel device is used for assisting the wall surface transition action of the robot, protrudes forwards and outwards to extend out of the support frame, and is adjusted in angle to realize wall surface contact so as to guide the whole robot to move forwards.

Specifically, through giving digital steering wheel signal with the lifting and the reduction of control wall transition magnetic wheel device, the different angle of lifting to the different wall condition of adaptation, with the obstacle crossing of convenient whole robot or wall transition, the during operation wall transition magnetic wheel device is laminated with the magnetic conduction wall magnetism that will pass through.

In some embodiments, the split flexible crawler traveling mechanism comprises a crawler magnetic adsorption device, and a connecting side plate fixedly connected with the crawler magnetic adsorption device, wherein the connecting side plate is fixedly connected with the connecting joint;

the crawler belt magnetic adsorption device comprises a crawler belt, the crawler belt is in meshed connection with a driving wheel and a driven wheel, and a plurality of permanent magnets are arranged on the crawler belt; the driving wheel is connected with the connecting side plate through a front wheel support, and the driven wheel is connected with the connecting side plate through a rear wheel support.

Through setting up permanent magnet and magnetic conduction wall magnetic adsorption to adsorb whole robot on the magnetic conduction wall, rotate through the drive action wheel, thereby drive the track operation, and then drive whole robot and advance.

In some embodiments, the front wheel leg joint of action wheel has motor module, the rear wheel leg joint of following driving wheel has track overspeed device tensioner, track overspeed device tensioner including be fixed in connect the inboard dog of curb plate, dog threaded connection has the tensioning bolt, the one end of tensioning bolt is connected with the tensioning piece, the tensioning piece is fixed with the rear wheel support through two guiding bolts, be equipped with on the connection curb plate and be used for the guide way that guiding bolt passed.

Specifically, the tensioning bolt extends along the fore-and-aft direction, the tensioning piece is opened threaded hole in the one end that is close to the dog, the pole portion screw in of tensioning bolt to the threaded hole in, guide bolt extends along left right direction, the guide way is the bar groove that extends along the fore-and-aft direction, the guide way is used for carrying out spacing direction to two guide bolt's back-and-forth movement, through rotating the tensioning bolt, the tensioning bolt just can drive the tensioning piece back-and-forth movement, thereby drive the back-and-forth movement of the rear wheel support from the driving wheel, realize the adjustment to the tensile force of track.

The left end and the right end of the driven wheel are respectively provided with an installation shaft, the installation shaft at the outer end is rotatably installed on the rear wheel bracket through a bearing, and the installation shaft at the inner end is rotatably installed on the tensioning block through the bearing after penetrating through the avoidance elongated slot on the connecting side plate.

In some embodiments, a through hole is formed in the center of the permanent magnet, a sponge gasket is arranged on the outer side of the permanent magnet, a mounting hole is formed in the crawler belt, and a fastening bolt is arranged to sequentially penetrate through the sponge gasket, the through hole of the permanent magnet and the mounting hole of the crawler belt and then is connected with a screwing avoiding nut.

An annular avoiding groove used for avoiding the nut is arranged between the driving wheel and the driven wheel.

In some embodiments, the motor module includes a brush dc motor, a planetary gear reducer, and a reducer flange, the reducer flange is connected to the connecting side plate, and an output shaft of the planetary gear reducer is connected to the driving wheel.

In some embodiments, the connection joint includes a first rotation shaft and a second rotation shaft perpendicular to each other, the second rotation shaft rotates around the first rotation shaft, and the connection side plate is connected to the connection side plate bearing seat of the second rotation shaft.

In some embodiments, the front and rear beam connecting joints are connected with the front main body beam through shaft bases, the front and rear beam connecting joints are connected with the front and rear beam connecting bolts through rotating shafts and shaft sleeves, and the end face of the rear main body beam is provided with threaded holes matched with the front and rear beam connecting bolts.

In some embodiments, the robot comprises two adaptive universal magnetic wheel assemblies symmetrically fixed on two sides of the rear end of the robot, and each adaptive universal magnetic wheel assembly comprises: the device comprises a wheel carrier, a universal magnetic wheel, four compression springs, four self-adaptive guide pillars, a connecting side plate wheel carrier, a wheel mounting plate and an adjusting screw; the connecting side plate wheel frame is fixed on the connecting side plate through a screw, the wheel frame is connected with the connecting side plate wheel frame through a screw, the compression spring is sleeved on the outer side of the self-adaptive guide pillar, one end of the self-adaptive guide pillar is fixed with the wheel mounting plate in a threaded mode, the other end of the self-adaptive guide pillar penetrates through a through hole of the wheel frame, and the adjusting screw is in external thread connection with the upper end of the self-adaptive guide pillar.

The self-adaptive universal magnetic wheel assembly is used for ensuring that the whole robot cannot overturn and fall in the wall surface advancing process and can provide certain magnetic adsorption force.

In some embodiments, the front main body beam is provided with a detection device and an electrical box body, the detection device comprises a camera and a camera bracket, the camera bracket and the electrical box body are fastened on the front main body beam in a buckling manner, and the electrical box body comprises a switching power supply, a power supply module and a signal transmission device.

Frame supporting structures are arranged on the front main body beam and the rear main beam; the frame supporting structure comprises a bull-eye wheel supporting frame and bull-eye wheels, the bull-eye wheel supporting frame is in a U-shaped groove shape, groove-direction long groove holes are formed in the two sides of the groove, and the bull-eye wheels are installed on the long groove holes.

In the working process, the brush direct current motor drives the driving wheel to rotate, and the driven wheel follows the driving wheel under the driving of the crawler belt, so that the crawler belt is driven to run, and the robot moves forwards or backwards; the turning action of the robot can be realized by controlling the different rotating speeds of the two driving wheels; in this in-process, the robot can carry out the conversion of wall with the help of wall transition magnetic wheel device in the right angle region, carry out lifting wall transition magnetic wheel device 3 through control digital steering wheel and thus drive climbing of whole robot, can compensate the magnetic adsorption power of track magnetic adsorption device simultaneously, thereby prevent that the robot that the direct rigid collision of organism of robot leads to from damaging or dropping, the safety and stability of robot operation has been guaranteed, and it is equipped with detection device to support the frame front end, can detect the place ahead wall, as the basis of referring of robot movement track.

Compared with the prior art, the invention has the beneficial effects that:

1. the invention provides a magnetic adsorption wall-climbing robot suitable for various vertical surfaces, which adopts a symmetrical structure, the front side and the rear side of the wall-climbing robot are respectively provided with a split flexible crawler walking mechanism, a plurality of permanent magnets are arranged on a crawler, the magnetic adsorption is carried out between the permanent magnets on the crawler and a magnetic conduction wall surface, the front end of the whole robot is provided with a wall surface transition magnetic wheel device, the barrier-crossing function can be realized, the magnetic adsorption force between the magnetic adsorption wheel device and the magnetic conduction wall surface can be enhanced, the adsorption capability of the whole robot is improved, the falling-off phenomenon of the robot caused by insufficient adsorption force is prevented, the stable and reliable adsorption of the robot can be realized on the magnetic conduction wall surfaces with different roughness, the wall surface conversion is successfully carried out, and the whole robot does not need to additionally add a power source to a magnetic adsorption crawler type moving mechanism, so the miniaturization and light weight design can be realized, the whole structure layout is compact, the space is not occupied, normal operation can be realized even in a narrow space, and the method is suitable for industrial scenes such as wind power tower cleaning and blade detection, chemical tank cleaning and flaw detection, ship rust removal and underwater accessory removal, pipeline detection and flaw detection and the like;

2. according to the magnetic adsorption wall-climbing robot suitable for multiple vertical surfaces, the tensioning force of the track can be adjusted by the track tensioning device, so that the magnetic adsorption wall-climbing robot can be suitable for the conditions of various complex wall surfaces such as a flat wall surface or a curved wall surface, the application range is very wide, the adjustment of the tensioning force can be realized only by rotating the tensioning bolt, and the operation process is convenient and quick;

3. according to the magnetic adsorption wall-climbing robot suitable for multiple vertical surfaces, the magnetic adsorption crawler type moving mechanism, the wall surface transition magnetic wheel device, the crawler tensioning device and the like are independent modular units, when one unit breaks down, only a single unit needs to be replaced, maintenance is convenient, and cost is saved;

4. according to the magnetic adsorption wall-climbing robot suitable for multiple vertical surfaces, the permanent magnets are detachably mounted on the track through the fastening bolts in the magnetic adsorption track type moving mechanism, the number of the permanent magnets can be adjusted according to needs, and therefore the size of adsorption magnetic force is adjusted to be suitable for wall surfaces with different roughness. The sponge gasket is arranged on the outer side of the permanent magnet, so that the whole robot can be buffered, the permanent magnet can be prevented from being broken due to collision, and the permanent magnet is effectively protected;

5. according to the magnetic adsorption wall-climbing robot suitable for multiple vertical surfaces, two mutually vertical rotational degrees of freedom are designed for each split flexible crawler traveling mechanism relative to a support frame, so that the permanent magnetic adsorption of the wall-climbing robot can automatically adjust the posture of the wall-climbing robot according to the state of a magnetic conduction wall surface of a cabled way, the change of a working air gap between each split flexible crawler traveling mechanism and the magnetic conduction wall surface is ensured to be within an allowable range, the magnetic adsorption force is constant, the wall-climbing robot is ensured not to slide down and fall down due to the sudden reduction of the magnetic adsorption force, meanwhile, the constant magnetic adsorption force also provides necessary friction force for the traveling of a crawler traveling module, and the crawler slipping caused by the insufficient friction force and the incapability of traveling are avoided;

6. the wall-climbing robot has good self-adaptive capacity on a complex variable-curvature magnetic conduction wall surface, good load capacity and motion flexibility, and can realize the function of converting the wall surface with different inner and outer right angles.

Drawings

FIG. 1 is a perspective view of a magnetic adsorption wall-climbing robot adapted to multiple elevations according to the present invention;

FIG. 2 is a perspective view of the support frame of the present invention;

FIG. 3 is a perspective view of the split flexible track travel mechanism of the present invention;

FIG. 4 is a perspective view of a wall transition magnetic wheel apparatus of the present invention;

FIG. 5 is a perspective view of the adaptive gimbal magnetic wheel assembly of the present invention;

FIG. 6 is a perspective view of the self-attaching joint of the present invention;

FIG. 7 is a perspective view of the caterpillar magnetic attachment apparatus of the present invention;

FIG. 8 is a perspective view of the permanent magnets on the track of the present invention;

FIG. 9 is a perspective view of the driven wheel and front wheel support of the present invention;

FIG. 10 is a perspective view of the drive wheel and rear wheel carrier of the present invention;

in the figure: 1. a support frame; 2. a split flexible crawler traveling mechanism; 3. a wall surface transition magnetic wheel device; 4. a track tensioning device; 5. a detection device; 51. a camera; 52. a camera head bracket; 53. an electrical box body; 531. a switching power supply; 532. a power supply module; 533. a signal transmission device; 6. a self-adaptive universal magnetic wheel assembly; 61. a wheel carrier; 62. connecting a side plate wheel carrier; 63. a universal magnetic wheel; 64. a compression spring; 65. a self-adaptive guide pillar; 66. a wheel mounting plate; 67. adjusting screws; 11. a front body beam; 12. a connecting joint; 13. a frame support structure; 122. a first rotating shaft; 123. a second rotating shaft; 125. connecting a side plate bearing seat; 14. the front beam and the rear beam are connected with joints; 15. a rear body beam; 21. connecting the side plates; 22. a caterpillar magnetic adsorption device; 221. a crawler belt; 222. a driving wheel; 223. a driven wheel; 224. an annular avoidance groove; 225. a permanent magnet; 226. a sponge pad; 23. a motor module; 231. a brushed DC motor; 232. a planet wheel reducer; 233. a reducer flange; 24. a front wheel bracket; 25. a rear wheel support; 31. a digital steering engine; 32. a steering engine disc; 33. obstacle-crossing magnetic wheels; 34. a magnetic wheel inner side supporting plate; 35. a magnetic wheel outer side support plate; 41. a stopper; 42. a tensioning block; 43. tensioning the bolt; 44. a guide bolt; 45. a guide groove; 46. installing a shaft; 48. fastening a bolt; 49. avoiding the nut.

Detailed Description

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

In the description of the present invention, it should be noted that the terms "front", "rear", "left", "right", etc. indicate the relative positions based on the advancing direction of the robot in the present application, and are only used for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

As shown in fig. 1 to 10, a magnetic adsorption wall-climbing robot adapted to multiple vertical surfaces comprises a supporting frame 1, wherein the supporting frame 1 comprises a front main body beam 11 and a rear main body beam 15 connected with the front main body beam 11 through a front beam connecting joint 14 and a rear main body beam 15, and a pair of connecting joints 12 are symmetrically connected to the front main body beam 11 and the rear main body beam 15;

two sets of split flexible crawler traveling mechanisms 2 are respectively arranged on the left side and the right side of the support frame 1, the split flexible crawler traveling mechanisms 2 are connected with the support frame 1 through the connecting joints 12, and each split flexible crawler traveling mechanism 2 has two mutually perpendicular rotational degrees of freedom relative to the support frame 1;

wall transition magnetic wheel devices 3 are respectively arranged on the left side and the right side of the front end of the supporting frame 1, each wall transition magnetic wheel device 3 comprises a digital steering engine 31 fixedly connected with the supporting frame 1, each digital steering engine 31 is connected with a steering engine disk 32, an inner magnetic wheel supporting plate 34 is fastened with the steering engine disks 32 through circumferential screws, and an obstacle-surmounting magnetic wheel 33 is connected between the inner magnetic wheel supporting plate 34 and an outer magnetic wheel supporting plate 35 through pins.

The wall surface transition magnetic wheel device 3 is used for assisting wall surface transition action of the robot, the wall surface transition magnetic wheel device 3 protrudes forwards and outwards to extend out of the support frame 1, and wall surface contact is realized by adjusting the angle of the wall surface transition magnetic wheel device, so that the whole robot is guided to move forwards.

Specifically, through giving digital steering wheel 31 signal with the lifting and the reduction of control wall transition magnetic wheel device 3, the different angle of lifting to the different wall condition of adaptation, with the obstacle crossing of convenient whole robot or wall transition, the during operation wall transition magnetic wheel device 3 with the magnetic conduction wall magnetism laminating that will pass through.

In some embodiments, the split flexible crawler belt unit 2 includes a crawler belt magnetic adsorption device 22, a connection side plate 21 fixedly connected to the crawler belt magnetic adsorption device 22, and the connection side plate 21 is fixedly connected to the connection joint 12;

the crawler magnetic adsorption device 22 comprises a crawler 221, the crawler 221 is engaged with a driving wheel 222 and a driven wheel 223, and a plurality of permanent magnets 225 are arranged on the crawler 221; the driving wheel 222 is connected to the connecting side plate 21 through a front wheel bracket 24, and the driven wheel 223 is connected to the connecting side plate 21 through a rear wheel bracket 25.

Through setting up permanent magnet 225 and magnetic conduction wall magnetic adsorption to adsorb whole robot on the magnetic conduction wall, rotate through drive action wheel 222, thereby drive the operation of track 221, and then drive whole robot and advance.

In some embodiments, the motor module 23 is connected to the front wheel support 24 of the driving wheel 222, the track-tightening device 4 is connected to the rear wheel support 25 of the driven wheel 223, the track-tightening device 4 includes a stopper 41 fixed to the inner side of the connecting side plate 21, the stopper 41 is in threaded connection with a tightening bolt 43, one end of the tightening bolt 43 is connected with a tightening block 42, the tightening block 42 is fixed to the rear wheel support 25 through two guide bolts 44, and the connecting side plate 21 is provided with a guide slot 45 for the guide bolt 44 to pass through.

Specifically, the tensioning bolt 43 extends in the front-back direction, a threaded hole is formed in one end, close to the stop block 41, of the tensioning block 42, a rod portion of the tensioning bolt 43 is screwed into the threaded hole, the guide bolts 44 extend in the left-right direction, the guide groove 45 is a strip-shaped groove extending in the front-back direction, the guide groove 45 is used for limiting and guiding the front and back movement of the two guide bolts 44, the tensioning bolt 43 can drive the tensioning block 42 to move back and forth by rotating the tensioning bolt 43, the back and forth movement of the rear wheel support 25 of the driven wheel 223 is driven, and the tensioning force of the crawler belt 221 is adjusted.

The left end and the right end of the driven wheel 223 are respectively provided with a mounting shaft 46, the mounting shaft 46 at the outer end is rotatably mounted on the rear wheel bracket 25 through a bearing, and the mounting shaft 46 at the inner end is rotatably mounted on the tensioning block 42 through a bearing after penetrating through an avoidance long groove on the connecting side plate 21.

In some embodiments, a through hole is formed in the center of the permanent magnet 225, a sponge gasket 226 is arranged on the outer side of the permanent magnet 225, a mounting hole is formed in the crawler 221, and a fastening bolt 48 is arranged to sequentially penetrate through the sponge gasket 226, the through hole of the permanent magnet 225 and the mounting hole of the crawler 221 and then is connected with the screwing avoiding nut 49.

An annular avoidance groove 224 for the avoidance nut 49 is provided between the driving wheel 222 and the driven wheel 223.

In some embodiments, the motor module 23 includes a brush dc motor 231, a planetary reducer 232, and a reducer flange 233, the reducer flange 233 is connected to the connecting side plate 21, and an output shaft of the planetary reducer 232 is connected to the driving wheel 222.

In some embodiments, the connecting joint 12 includes a first rotating shaft 122 and a second rotating shaft 123 perpendicular to each other, the second rotating shaft 123 rotates around the first rotating shaft 122, and the connecting side plate 21 is connected to the connecting side plate bearing seat 125 of the second rotating shaft 123.

In some embodiments, the front-rear beam connecting joint 14 is connected with the front body beam 11 through a shaft base, the front-rear beam connecting joint 14 is connected with a front-rear beam connecting bolt through a rotating shaft and a shaft sleeve, and the end surface of the rear body beam 15 is provided with a threaded hole matched with the front-rear beam connecting bolt.

In some embodiments, two adaptive magnetic universal wheel assemblies 6 symmetrically fixed on both sides of the rear end of the robot are included, each adaptive magnetic universal wheel assembly 6 includes: the device comprises a wheel frame 61, a universal magnetic wheel 63, four compression springs 64, four self-adaptive guide posts 65, a connecting side plate wheel frame 62, a wheel mounting plate 66 and an adjusting screw 67; the connecting side plate wheel frame 62 is fixed on the connecting side plate 21 through a screw, the wheel frame 61 is also connected with the connecting side plate wheel frame 62 through a screw, the compression spring is sleeved outside the self-adaptive guide pillar 65, one end of the self-adaptive guide pillar 65 is fixed with the wheel mounting plate 66 in a threaded manner, the other end of the self-adaptive guide pillar 65 penetrates through a through hole of the wheel frame 61, and the adjusting screw 67 is in threaded connection with the upper end of the self-adaptive guide pillar 65.

The self-adaptive universal magnetic wheel assembly 6 is used for ensuring that the whole robot cannot overturn and fall in the wall surface advancing process and can provide certain magnetic adsorption force.

In some embodiments, the front main body beam 11 is mounted with a detection device 5 and an appliance box body 53, the detection device 5 includes a camera 51 and a camera bracket 52, the camera bracket 52 is fastened to the appliance box body 53 on the front main body beam 11, and the appliance box body 53 includes a switch power supply 531, a power supply module 532 and a signal transmission device 533.

The front main body beam 11 and the rear main beam 15 are both provided with a frame supporting structure 13; the frame supporting structure 13 comprises a bull-eye wheel supporting frame and bull-eye wheels, the bull-eye wheel supporting frame is in a U-shaped groove shape, two sides of the groove are provided with groove-direction long groove holes, and the bull-eye wheels are installed on the long groove holes.

In the working process, the brush direct current motor 231 drives the driving wheel 222 to rotate, and the driven wheel 223 follows up under the driving of the crawler belt 221, so that the crawler belt 221 is driven to run, and the robot moves forwards or backwards; the turning action of the robot can be realized by controlling the different rotating speeds of the two driving wheels 222; in this process, the robot can carry out the conversion of wall with the help of wall transition magnetic wheel device 3 in the right angle region, carry out lifting wall transition magnetic wheel device 3 through control digital steering wheel 31 and thus drive climbing of whole robot, can compensate the magnetic adsorption power of track magnetic adsorption device 22 simultaneously, thereby prevent that the robot that the direct rigid collision of organism of robot leads to from damaging or dropping, the safety and stability nature of robot operation has been guaranteed, and support frame 1 front end is equipped with detection device 5, can detect the place ahead wall, as the basis of referring to of robot orbit.

Specifically, the surface of the crawler belt 221 is provided with a plurality of permanent magnets 225, and the permanent magnets 225 and the magnetic conduction wall are magnetically attracted, so that the whole robot is attracted to the magnetic conduction wall, and the driving wheel 222 is driven to rotate by the driving mechanism, so that the crawler belt 221 is driven to run. Simultaneously can adapt to the wall of different curvatures automatically or the vertical plane of different environment, when climbing the wall robot and moving on variable curvature magnetic conduction wall, above-mentioned four components of a whole that can function independently flexible track running gear 2 pastes tight magnetic conduction wall with frame bearing structure 13 through magnetic adsorption power on the wall, make the permanent magnet 225 of climbing the wall robot can be according to the magnetic conduction wall situation automatically regulated its self gesture of walking, wall transition magnetic wheel device 3 can drive real-time angle regulation through the steering wheel simultaneously, the auxiliary robot passes through at interior right angle and outer right angle and passes through, and at the wall during operation, through the lifting and reduce the magnetic wheel height and can guarantee the reliable walking of climbing the wall robot on variable curvature magnetic conduction surface with the magnetic adsorption power of guaranteeing the robot, then carry out the detection work of wall through the camera device, still possess the flexibility of walking simultaneously.

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