JPH0752842A - Moving suction cup for wall surface traveling robot - Google Patents

Abstract

PURPOSE:To provide a moving suction cup for a wall surface traveling robot capable of traveling safely without the possibility of falling-on the wall surface or a ceilng surface of a building. CONSTITUTION:A moving suction cup 6 is composed of a foundation frame 22 fixed to a fitting frame 27, an enclosure frame 21 composed of soft rubber and provided on the foundation frame 22, an internal slide frame 26 mounted vertical-movably between the foundation frame 22, the enclosure frame 21 and the base seat 24 and wherein the surface is adopted as a frictional surface 29, and an elastic body 25 locked between the base seat 24 and the internal slide frame 26 to energize the internal slide frame 26 upward. Air holes 23 and 30 communicated inside and outside respectively are provided on the fitting frame 27, the base seat 24, and the internal slide frame 26 to strongly suck the frictional surface 29 of the internal slide frame 26 surface and the enclosure frame 21 tip to a wall surface by suction force at the time of the operation of a vacuum generation device.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a movable suction plate of a wall surface traveling robot capable of remotely moving a wall surface or a ceiling surface of a building such as a building or a bridge.

[0002]

2. Description of the Related Art As is well known, this kind of wall-mounting robot is conventionally dangerous to humans such as cleaning, inspecting and coating wall surfaces and ceiling surfaces of buildings, bridges, tunnels and other structures. It is used as a work that can be performed unattended by remote control while performing work accompanied by. As a movable suction plate used for such a wall surface traveling robot, there are those disclosed in, for example, Japanese Utility Model Laid-Open No. 01-128475 and Japanese Utility Model Laid-Open No. 04-38386.

That is, the one disclosed in Japanese Utility Model Laid-Open No. 01-128475 relates to the improvement of the suction plate of the crawler type wall surface moving robot, and is characterized in that the suction plate is provided with a suction portion for invoking. However, the main purpose of the suction part of the suction plate for sucking in is to effectively perform suction just before the suction plate comes into contact with the wall surface.

On the other hand, in the one disclosed in Japanese Utility Model Publication No. 04-38386, the suction cup body is composed of a hard suction cup base made of a hard elastic material and a soft suction cup tip made of a soft elastic material. It is an object of the present invention to provide a suction plate that is easy to operate and hard to separate.

[0005]

As described above, all of the above-mentioned prior arts are intended to provide a suction cup having a structure that is easily adsorbed to the wall surface and is not easily separated from the wall surface. Although it is tentatively effective in that it is difficult to do, the above effect is not always obtained depending on wall surface conditions. In other words, if the wall surface is wet or if the unevenness of the wall surface is significant, the wetness or unevenness of the wall surface causes the suction cup to slip easily against the wall surface due to the weight of the wall surface-moving robot. There was a considerable problem in terms of practical use, such as the problem that the robot for wall traveling slipped from the wall.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and an object of the present invention is to make a suction cup itself have a certain anti-slip effect regardless of whether wall surface conditions are good or bad. The present invention is intended to provide a movable suction plate for a wall surface traveling robot that exhibits a predetermined suction effect without causing the wall surface traveling robot to slip off the wall surface during work.

In order to achieve the above-mentioned object, the invention according to claim 1 is a rotating belt which is wound around two or more pairs of rotating wheels arranged at a predetermined interval in front of and behind the frame, and which rotates and runs. It is premised on a wall surface traveling robot that is fixed to a rotating band through a mounting frame and has a plurality of moving suction plates that can be adsorbed to a wall surface by an adsorption action by a vacuum generator operation when traveling on a wall surface. A base frame fixed to the mounting frame, an enclosure frame made of a flexible member provided on the base frame, and a pedestal fixed to the mounting frame in the base frame. An inner slide frame which is installed between the base frame and the surrounding frame and the pedestal so as to be movable up and down, and has a friction surface on the inner slide frame, and is locked between the pedestal and the inner slide frame. And an elastic body that urges the And the pedestal and the inner slide frame are provided with vent holes communicating with the inside and outside respectively, and the frictional surface of the inner slide frame and the tip of the surrounding frame are attracted to the wall surface by the suction force when the vacuum generator is operated. It has a feature.

[0008]

According to the invention of claim 1, which has the above-mentioned structure, the movable suction plate has a surrounding frame made of a flexible member provided on a base frame fixed to a mounting frame, a pedestal fixed to the base frame, and the base. Since it is composed of an internal slide frame that is vertically movable between the frame and the surrounding frame and is biased upward, when the movable suction plate comes into contact with the wall surface, first, the surrounding frame. The tip and the friction surface on the surface of the inner slide frame come into contact with each other, but at this time, air is sucked from the vent hole provided in the inner slide frame, the attachment frame and the vent hole provided in the pedestal by the suction force when the vacuum generator is operated. As a result, a negative pressure is created in the space existing between the internal slide frame and the pedestal. When the space becomes negative pressure in this way, the inner slide frame moves to the pedestal side against the urging force of the elastic body, while the surrounding frame in contact with the wall surface is formed of a flexible member. Therefore, the surrounding frame is strongly compressed toward the tip side thereof, and is brought into close contact with the wall surface. At the same time, the friction surface of the surface of the inner slide frame moving to the pedestal side is strongly pressed against the wall surface. At this time, a large frictional force is generated between the friction surface of the surface of the inner slide frame and the wall surface, and this frictional force prevents the moving suction plate from sliding on the wall surface. Further, as described above, since the surrounding frame that is in close contact with the wall surface is formed of the flexible member as described above, even if the wall surface has some unevenness, the tip of the surrounding frame is Deforms along the uneven shape and completely fills even a small gap between the tip of the enclosure and the wall surface, so that the airtight state in the enclosure is further improved. Further, even if the inside of the surrounding frame is made airtight by the inner slide frame, it is not crushed inward.

On the other hand, when the movable suction plate separates from the wall surface and the suction force from the vacuum generator ceases to act on the movable suction plate, the inner slide frame moving to the pedestal side is surrounded by the restoring force of the elastic body. The inner slide frame is urged upward, and at the same time, the enclosure frame is also enclosed by the restoring force of the flexible member constituting the inner slide frame. The original shape of the frame is immediately restored, and a space is formed again between the inner slide frame and the pedestal, and the space becomes normal pressure.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 to 4 show a movable suction plate 6 according to the present invention.
1 shows a wall-mounting robot 1 using the. As shown in these drawings, the wall-mounting robot 1 has a pair of rotating wheels arranged on one end side of the frame body 2 so as to face each other with a lateral width of the frame body 2 spaced apart. Driving wheel 3 and driven wheel 4 and another pair of driving wheel 3 and driven wheel 4 arranged on the other end side of the frame body 2 such that the pair of driving wheel 3 and driven wheel 4 are laterally reversed and face each other. A driving wheel 3 and a driven wheel 4 that constitute a rotating wheel, and one rotation band that is wound and rotated between the two pairs of the driving wheel 3 and the driven wheel 4 that are respectively arranged at one end side and the other end side thereof. 5 and a plurality of movable suction plates 6 fixed to the outer peripheral surface of the rotating band 5 via a mounting frame (not shown).
And a suction pipe 7 for connecting the movable suction plate 6 to a vacuum generator (not shown), and the suction pipe 7
The control unit 8 is provided in the middle of the pipe, and is connected to the vacuum generating device when the moving suction plate 6 is in contact with the wall surface, and is disconnected from the vacuum generating device when the moving suction plate 6 is separated.

The frame 2 has a rectangular shape as shown in FIG. 2, and the motor 9 provided at one end of the frame 2 drives the drive gear 10 and the intermediate gear 11 provided at one side of the frame 2. The rotational force is transmitted to the drive wheels 3 via. A tooth portion is formed on the outer periphery of the drive wheel 3 so as to mesh with the meshing tooth mold 12 formed on the back surface of the rotary belt 5. Further, a driven wheel 4 having the same diameter is rotatably provided on the other side of the frame body 2 of the drive wheel 3 which faces each other, and the outer periphery of the driven wheel 4 has teeth which mesh with the meshing tooth type 12 of the rotary band 5. Parts are formed.
Further, the motor 9 is also provided on the other end side of the frame body 2,
The same drive gear 10, intermediate gear 11 and drive wheel 3 as described above are provided on the other side corresponding to the diagonal position of the frame body 2, and the driven wheel 4 on one side of the frame body 2 facing each other.
Is rotatably provided.

As described above, in the rotary band 5, the two pairs of drive wheels are provided so that the meshing tooth molds 12 formed on the inner peripheral surface of the rotary band 5 face each other on one end side and the other end side of the frame body 2. Since it is wound so as to mesh with 3 and the tooth portion of the driven wheel 4, the rotational drive is applied to the rotary band 5 from different sides of both winding ends. For this reason, the tension of the rotary belt 5 does not loosen while maintaining the tension even when the rotary belt 5 rotates forward or backward or when the rotation is switched. Can be kept in close contact with the wall surface,
Stable running with large adsorption power is possible.

Further, the rotary belt 5 has front and rear portions 2 in which meshing tooth molds 12 provided on the back surface side are arranged on both end sides of the frame body 2.
A total of four are arranged on each of the one side and the other side, which are located between the pair of drive wheels 3 and the driven wheels 4, and have a larger diameter than the drive wheels 3 and mesh with the rotatable guide wheel 13. .

Of the four guide wheels 13 described above, the two guide wheels 13 on one side and the other side of the frame 2 and adjacent to the driven wheels 4 on these sides are fixed to the shafts. Gear 14, a first intermediate gear 15 and a second intermediate gear 1 rotatably supported by respective shafts fixed to the frame body 2.
6, a third intermediate gear 17 coaxial with the second intermediate gear 16
Also, a pair of control wheels 20 on both left and right sides of the frame 2 sharing the shaft 19 at the center of the frame 2 are driven via the fourth intermediate gear 18. Due to the meshing of these gear mechanisms, the guide wheel 13 to the control wheel 20
When the rotational force is transmitted to the rotary belt 5 and the rotary belt 5 makes one rotation, the control wheel 20 makes one rotation so that one rotation of the rotary belt 5 and one rotation of the control wheel 20 are synchronized. .

Further, as shown in FIG. 2, the movable suction plate 6 is fixed on a large number of mounting frames 27 which are mounted in the lateral width direction via hinges 28 over the entire outer peripheral surface of the rotary band 5. In particular, the structure is as shown in FIGS. 5 and 6. That is, as shown in these drawings, the moving suction disk 6 described above has the same shape as the base frame 22 having a horizontally long rectangular shape,
An enclosure frame 21 formed of a flexible member having a restoring force such as soft rubber is attached, and a pedestal 24 is fixed inside the base frame 22, and between the base frame 22 and the enclosure frame 21 and the pedestal 24. A substantially box-shaped inner slide frame 26 is arranged so as to be movable up and down, and an elastic body 25 such as a spring for urging the inner slide frame 26 upward is arranged between the pedestal 24 and the inner slide frame 26. The mounting frame 27 and the pedestal 24 are provided with a vent hole 23 that communicates with the outside, while the inner slide frame 26 has a central portion penetrating the friction surface 29 on the front surface side and the back surface side. In addition, a ventilation hole 30 that communicates the inside and the outside is provided.

The inner slide frame 26 is shown in FIG.
As shown in FIG. 5, the friction surface 29 is provided in each of the suction chambers 28 formed inside the enclosing frame 21 and traverses the ventilation hole 30 provided in the internal slide frame 26. A plurality of suction grooves 31 are formed vertically and horizontally on the side. Therefore, as shown in FIG. 7, when the movable suction plate 6 of the wall-surface-moving robot 1 is in contact with the vertical wall surface A, the vacuum generator (not shown) is operated to first install it on the mounting frame 27. Moving suction pipe 32 from vent hole 23
When sucked through, the air is sucked toward the vacuum generator through the suction groove 31, the vent hole 30, and the vent hole 23, whereby the suction is the inner space of the inner slide frame 26 shown in FIG. The chamber 28 has a negative pressure, and as shown in FIG. 7, the inner slide frame 26 moves in the direction of the pedestal 24 against the urging force of the elastic body 25, and the tip of the surrounding frame 21 with respect to the wall surface A. While being compressed, the space between the wall surface A is sealed. At the same time, the inner slide frame 26 moved to the pedestal 24 side operates so as to press against the wall surface A while being in contact with the pedestal 24 side (that is, the state shown in FIG. 6 is changed to the state shown in FIG. 7). To). By such an action, the tip end of the surrounding frame 21 and the friction surface 29 of the internal slide frame 26 are adsorbed to the wall surface A in a highly airtight state.

As shown concretely in FIGS. 5 and 6, the attachment frame 27 has a vertical piece 33 whose both longitudinal ends are bent in the opposite direction to the surrounding frame 21, and an end portion of the vertical piece 33. From the first guide wheel 35 so as to be arranged in parallel with the vertical piece 34 although the horizontal piece 34 is bent further outward from the vertical piece 33. While the second guide wheel 36 is provided, the first and second guide wheels 35, 35 are provided on the lower surface side of the horizontal piece 34.
A third guide wheel 37 is provided which rotates at a position orthogonal to the direction of rotation of 36. Further, as described above, as specifically shown in FIG. 10, the back surface of the mounting frame 27 is rotatably fixed to the outer peripheral surface of the rotary band 5 via the hinge 38 with screws or the like. Since the gap between the adjacent mounting frames 27 is small, the angle at which the mounting frame 27 freely rotates via the hinge 38 is small.

As shown in FIGS. 8, 9 and 10, linear guide rails 39 for guiding the three guide wheels 35, 36, 37 of the mounting frame 27 are provided at both left and right ends of the frame body 2.
Are installed respectively. These guide rails 39
Is attached to the outer peripheral surface of the rotary belt 5 via the hinge 38 and the mounting frame 27 when the rotary belt 5 meshes with the two pairs of drive wheels 3, the driven wheels 4 and the two pairs of guide wheels 13 to rotate. The moving suction plate 6 is always kept in parallel with the wall surface A, and the wall traveling robot 1 is subjected to an unbalanced load and the frame 2
Even when an external force acts in a direction away from the wall surface A, the purpose is to distribute this external force to all the moving suction plates 6 of the wall surface A that are adsorbed as much as possible, and to prevent left and right shaking in the traveling direction. A first guide 40 that is provided for the purpose of guiding the two first and second guide wheels 35 and 36 in a direction parallel to the wall surface A, and a second guide that guides the third guide wheel 37 in a direction perpendicular to the wall surface A. 41 and 41.

Further, as described above, the guide rail 39 is
The rotation belt 5 is arranged below the straight portion with the meshing portion of the guide wheel 13 as a boundary, but in the curved portion from the meshing portion of the guide wheel 13 to the drive wheel 3 (or the driven wheel 4) side, As shown in FIG. 8 or 9, an arc-shaped auxiliary guide rail 4
Two are provided. That is, as shown in FIG. 8, these auxiliary guide rails 42 guide the movable suction plate 6 located on the left side in the drawing, which is inclined downward to the right, so as to move on the guide rail 39 in a parallel state. Therefore, the posture is corrected so that the friction surface 29 of the inner slide frame 26 of the movable suction plate 6 becomes parallel to the wall surface immediately before the movable suction plate 6 contacts the wall surface (curved portion of the rotary band 5). And
As shown in FIG. 8, the first guide wheel 35 having a longer shaft provided on the vertical piece 33 of the mounting frame 27 shown in FIG. 5 is guided to the arc outer peripheral surface side of the auxiliary guide rail 42 as shown in FIG. The movable suction plate 6 rotates around the center of the axis to maintain a parallel posture. In addition, in case of reverse rotation of the rotation band, a similar auxiliary guide rail is provided at the opposite end, but in this case, the second guide wheel 36 having a shorter shaft has an arc shape. It is designed to be guided to the outer peripheral surface side.

On the other hand, the control unit 8 mainly controls the control wheels 20, the control plate 43 supported by the frame 2, and the control wheels 20 as shown in FIGS. 10 to 13. The control wheel 20 includes a rotatable switching plate 44 interposed between the plates 43. In particular, the control wheel 20 has four transparent columns arranged in a row radially from a central hole 45 through which the shaft 19 penetrates. Fifteen rows of holes 46 are provided at equal angular intervals. This one
The four through-holes 46 in each row correspond to the four vent holes 23 of one moving suction plate 6, respectively, and the above-mentioned moving suction between each through hole 46 and each vent hole 23 of the moving suction plate 6 is performed. Pipe 32
Connected by each. Further, since the total number of the movable suction plates 6 attached to the outer peripheral surface of the rotary band 5 is 30, a total of 30 holes are provided in one control wheel 20 and the through holes 4 of 15 rows are provided.
6 corresponds to half of the moving suction disks 6, and the two control wheels 20 correspond to all the moving suction disks 6. However, in consideration of safety, the adjacent moving suction disks 6 have different control wheels. Two
Care is taken so that the through holes 46 in one row of 0 correspond. As a result, even if a damage accident occurs in one of the control units 8, the remaining half of the movable suction disk 6 is maintained in the state of being sucked onto the wall surface A.

The above-mentioned two control wheels 20 facing each other are
The gear mechanism rotates in the same direction at the same speed, but as described above, both ends are fixed to the shafts 19 rotatably supported by the frame body 2 to forcefully rotate in the same direction. It can also rotate to speed. Further, the two control wheels 20 and the rotary belt 5 rotate in the same direction, and when the control wheel 20 makes one rotation, the rotary belt 5 also makes one rotation. Since there is no shaft corresponding to the shaft 19 between the driven wheel 4 and the driven wheel 4, the rotary belt 5 is provided between the through hole 46 of each control wheel 20 and the plurality of ventilation holes 23 of each movable suction plate 6. The 120 moving suction tubes 32 connected to each other are designed to rotate and move without being entangled with each other.

As shown in FIG. 10, the control plate 43 is fixed to the frame body 2 with a switching plate 44 interposed so as to be concentric with the control wheel 20. The control plate 43, the switching plate 44, and the control wheel 20 are configured so as to be in an airtight state via packing or the like (not shown). Specifically, as shown in FIG. 11, a fan-shaped suction through hole 47 is formed in the control plate 43, and the suction through hole 47 is connected to the suction pipe 7 from a vacuum generator (not shown). The fan-shaped suction through holes 48 are connected and have a circumferential angle slightly smaller than that of the suction through holes 47.
A switching plate 44 in which the holes are formed, the through holes 46 of the control wheel 20 corresponding to the site where the suction through holes 47 are formed, and the through holes 46.
Through the moving suction pipes 32 connected to the suction chambers 28 of the moving suction plate 6 connected to the moving suction pipes 32.
The air inside and the air existing between the friction surface and the wall surface of the internal slide frame 26 in the movable suction disk 6 can be sucked.

The through holes 46 located in the respective suction through holes 47 of the two control plates 43 on the left and right sides of the frame body 2 are 6 rows in one and 5 rows in the other, 11 rows in total, that is, at all times. Eleven movable suction disks 6 are adapted to stick to the wall surface A. Further, as described above, since the switching plate 44 is also formed with the suction through hole 48 having substantially the same shape as the suction through hole 47, the suction force from the suction pipe 7 is controlled by the control plate 43, the switching plate 44, and the control plate 44. It is adapted to be transmitted to the moving suction plate 6 side via the wheel 20 and the moving suction pipe 32. Further, a large number of teeth are formed on the outer periphery of the switching plate 44, and these teeth are adapted to mesh with the teeth of a gear attached to the shaft of a control motor (not shown) fixed to the frame body 2. When the motor is driven, it is rotated about the shaft 19 by an angle formed by the two rows of through holes 46, that is, from the one-dot chain line X to the two-dot chain line Y shown in FIG. The position can be switched. As a result, the position of the first moving suction disk 6 from which suction is started among the 11 moving suction disks 6 that are sucking is switched, and the moving suction disk 6 in the front row in the traveling direction of the wall surface traveling robot 1 is switched.
Is always sucked.

The vacuum generator may be either a vacuum pump or a type that supplies compressed air and sucks it by the ejector principle, and the installation location of the vacuum generator is not limited. May be at any height, such as on a rooftop of a building forming the wall surface A, or on the ground, or may be loaded on the robot 1 by any means. In particular, when the vacuum generator is installed at a high place, since the vacuum generator and the robot 1 are connected by the suction pipe 7, the suction force of the moving suction plate 6 is remarkably reduced. As a result, the robot 1 is attached to the wall surface A.
Even if the suction tube 7 cannot be adsorbed on, the suction tube 7 can be used in place of the lifeline to prevent the drop.

When it is desired to drive the wall-mounting robot configured as described above along the wall surface of a building, for example, as shown in FIG. 7, first, as shown in FIG. The friction surfaces 29 of the 11 movable suction plates 6 located on the side are forcibly brought into contact with the wall surface A, and the suction action is exerted by the operation of the vacuum generator (not shown) connected to the robot 1. The intended purpose can be achieved by itself. That is, as shown in FIG. 11, the suction action by the operation of the vacuum generator (not shown) causes the suction action from the suction tube 7 connected to the vacuum action, so that the fan-shaped suction through holes 47 of the two control plates 43, Suction through hole 48 of switching plate 44 and these holes 4
Via a total of 11 rows of two control wheels 20 respectively located at the opening portions of 7, 48, a total of 44 through holes 46, and each moving suction pipe 32 connected to each of these through holes 46. Then, a total of 44 suction chambers 28 of 11 moving suction plates 6 connected to the respective moving suction pipes 32 and in contact with the wall surface A are provided.
Since air is sucked from the inside, the inside of the suction chamber 28 is rapidly depressurized, and the inside of the suction chamber 28 becomes a negative pressure.

In this way, as a result of the negative pressure in the total of 44 suction chambers 28 of the moving suction disk 6, the inner slide frame 26 arranged in the moving suction disk 6 shown in FIG. Two
While the enclosing frame 21 that is in contact with the wall surface is made of soft rubber while moving to the pedestal 24 side against the urging force of No. 5, the enclosing frame 21 is strongly compressed toward its tip side. And becomes a close contact state with the wall surface. At the same time, pedestal 2
The friction surface 29 on the surface of the inner slide frame 26 moving to the 4 side is strongly pressed against the wall surface, and is in a state as shown in FIG. 7. At this time, a large frictional force is generated between the friction surface 29 on the surface of the inner slide frame 26 and the wall surface A, and this frictional force prevents the movable suction plate 6 from sliding on the wall surface A. In addition, the enclosure frame 21 that is in close contact with the wall surface A
Is formed of a flexible member such as soft rubber as described above, even if the wall surface A has some irregularities, the tip of the surrounding frame 21 is deformed along the irregular shape, Since even a slight gap between the tip of the enclosure 21 and the wall surface A is filled almost completely, the airtight state in the enclosure 21 is further improved. Further, even in the airtight state, the inner slide frame 26 does not crush the surrounding frame 21 inward.

As described above, as a result of the moving suction plate 6 of the wall surface traveling robot 1 being strongly attracted to the wall surface A, the moving suction plate 6 does not slide on the wall surface A, and therefore,
There is an effect that there is no possibility that the wall surface traveling robot 1 will slide down from the wall surface A.

Incidentally, as in the above embodiment, the moving suction disk 6 is used.
When a plurality of suction chambers 28 are provided in the suction chamber 28, the suction action by the operation of the vacuum generating device acts independently of each suction chamber 28, so that one suction chamber 28 or the moving suction pipe 32 is tentatively used.
Even if a damage accident occurs in the air, even if the suction force is reduced or air in the atmosphere is sucked, the other suction chambers 28 and the moving suction pipe 32 are not affected, and the suction chamber 28 and the moving suction pipe 32 are effectively affected. Exert function. Therefore, there is no possibility that the wall surface traveling robot 1 will slide off from the wall surface A due to the damage accident, and there is an advantage in safety.

When the wall surface traveling robot 1 is made to travel along the wall surface A, the electric wire connected to the power supply is bundled together with the suction pipe 7 connected to the vacuum generator (not shown). By energizing, the two motors 9 are simultaneously driven in forward or reverse directions. Then, the two drive wheels 3 arranged on the diagonal line also rotate at the same time to rotate the rotary band 5. At this time, since the rotary belt 5 meshes with the four guide wheels 13, the control wheel 20 meshing with the four guide wheels 13 by the above-mentioned gear mechanism also starts to rotate. During operation of the vacuum generator, the large number of through holes 46 provided in the control wheel 20 are not used for all the through holes 46 but are located on the wall surface A side as described above. It is sucked only from the 11 movable suction plates 6, and there is no suction from the movable suction plate 6 located at the front and rear ends or on the side opposite to the wall surface A, so a part of it (a total of 44 through holes in 11 rows) Is used, the suction force from the vacuum generator is effectively used. In addition, while the wall-mounting robot 1 is running, one of the 11 movable suction plates 6 that performs suction is sucking slightly before contacting the wall surface, and immediately before contacting the wall surface, as shown in FIG. As shown, the hinge 3 is moved by the auxiliary guide rail 42 and the first guide wheel 35 or the second guide wheel 36.
The friction surface 29 and the wall surface A are made parallel to each other by rotating about the surface 8 so that they are easily attracted to the wall surface A.

On the other hand, when the traveling direction of the wall surface traveling robot 1 is switched to the reverse direction, first, a control motor (not shown) is driven to move the switching plate 44 by the angle formed by two adjacent rows of the through holes 46. Rotate. As a result, of the 11 movable suction plates 6 that perform a suction action, the movable suction plate 6 immediately before coming into contact with the wall surface is sucked for the same reason as described above, and is in a state of being easily sucked onto the wall surface A. And the motor 9
Is rotated in the opposite direction, the two drive wheels 3 are driven in the same manner as described above, and the rotation band 5 is rotated in the opposite direction,
The wall-mounting robot 1 is moved in the opposite direction. In this way, the suction is carried out from the moving suction disk 6 that is in contact with the wall one after another,
On the contrary, the moving suction plate 6 which separates from the moving suction plate 6 can be moved forward and backward by controlling the control unit 8 to stop suction.

The frame 2 of the wall surface traveling robot 1 configured as described above is equipped with a coating device for the wall surface A, a cleaning device, an inspection device, a coating device, etc., depending on the intended use. Although the work is performed, it is considered that the work efficiency is remarkably improved if such a work is performed in addition to the function of the wall-mounting robot 1 to simply move forward and backward and the direction of travel can be changed during the work. A device for turning can also be provided, as described below.

That is, as shown in FIG. 1, the device for changing the direction specifically includes a turning motor 50 and a gear train 5 via a fixed arm 49 arranged above the frame 2.
Rotating arm 52 supported by 1 for direction change
And the vertically moving cylinders 5 provided at both ends of the rotating arm 52.
3, a fixed suction plate 55 fixed to the rod 54 of the vertical movement cylinder 53, a suction pipe 7 connecting the fixed suction plate 55 and a vacuum generator (not shown), and a suction pipe 7 provided in the middle of the pipe. Turn on the connection between the vacuum generator and the fixed suction board 55.
-It has a configuration with a switching valve (not shown) that is switched by switching it off. The vertical movement cylinder 53 is connected to the suction pipe 7 so as to control the rod 54 in the vertical direction by sucking the inside of the cylinder, and the fixed suction plate 55 has the same structure as the moving suction plate 6. There is.

When it is desired to change the traveling direction of the robot 1 with such a device for changing the direction, first, the vertically moving cylinders 53 provided at both ends of the rotary arm 52 are extended to fix the fixed suction disk 55 to the wall surface A. The fixed suction plate 55 is firmly attached to the wall surface A by bringing them into contact with each other, and then switching a switching valve (not shown) to generate a negative pressure on the fixed suction plate 55 connected to the vacuum generator via the suction pipe 7. Then, the moving suction plate 6 and the vacuum generator are disconnected, and the rod 54 of the vertical movement cylinder 53 is further extended to separate the eleven moving suction plates 6 from the wall surface A. After that, the robot 1 is rotated with respect to the rotating arm 52 in a direction in which the robot 1 is about to newly advance. At this time, by driving the turning motor 50, the rotational force is transmitted to the gear train 51 and the robot 1 rotates. Next, the rod 54 of the vertical movement cylinder 53 is contracted, and the eleven moving suction plates 6 are brought into contact with the wall surface A again, and then the vacuum generator and the moving suction plate 6 are connected to each other to generate the suction force. After the movable suction plate 6 has been sucked, the switching valve disconnects the vacuum generator from the fixed suction plate 55. Then, by further reducing the rod 54 of the vertical movement cylinder 53, the fixed suction plate 55 is separated from the wall surface A, and thereafter, the two motors 9 are driven to rotate the rotation zone 5 forward or backward, thereby achieving the purpose. It is possible to proceed in the direction.

Further, the embodiments shown in FIGS. 14 and 15 show a case where the wall-mounting robot 1 is equipped with a moving device effective when it is necessary to move only in the lateral direction depending on its working purpose. . In this embodiment, a vertical movement cylinder 53 is provided at both ends of the frame 2 of the wall surface traveling robot 1 via mounting arms 56, and the vertical movement cylinder 53 is provided.
A long fixed suction plate 55 is attached to the tip of each rod 54, and the upper surface of the fixed suction plate 55 and the rod 5 are attached.
4 and the drive gears 58 and 2 provided at both ends of the frame body 2 while being configured to be slidable via a slide plate 57.
It is configured such that the teeth 59 formed on the inside of one fixed suction disk 55 mesh with each other.

By adopting such a configuration,
The fixed suction board 55 is suction-fixed to the wall surface A, the wall surface traveling robot 1 is separated from the wall surface A by the vertical movement cylinder 53, and then the drive gear 58 is driven to move the wall surface traveling robot 1 laterally. Can be made.

[0036]

As described above, according to the first aspect of the invention, the movable suction plate of the robot for traveling on the wall surface is provided with an enclosure made of soft rubber, and is vertically movable in the enclosure and upward. It is configured with an internal slide frame that is biased to and distributed, and by the suction force by the operation of the vacuum generator, the internal slide frame is sucked against the wall surface against the biasing force,
The tip of the enclosure frame made of soft rubber that contacts the wall surface is compressed against the wall surface, and at the same time, the friction surface of the surface of the internal slide frame is pressed against the wall surface. As a result, the frictional resistance between the wall surface and the friction surface of the inner slide frame surface increases, and at the same time, the flexible member such as soft rubber, which is the constituent material of the enclosure frame, is freely deformed along the unevenness of the wall surface. Since the uneven surface is filled in, the airtightness between the tip of the enclosure and the wall surface is significantly improved. Therefore, the wall surface-moving robot adopting the movable suction plate has a very large suction effect on the wall surface, and it is always difficult to slip on the wall surface regardless of whether the wall surface condition is good or not, so that there is a risk of slipping or the like. Not only can safety work be carried out without the need, but there is an effect that more robots can be loaded with equipment for wall surface traveling than in the past and workability is improved.

[Brief description of drawings]

FIG. 1 is an overall perspective view of a wall surface traveling robot using a movable suction plate according to an embodiment of the present invention.

FIG. 2 is a plan view of a drive mechanism of a wall surface traveling robot.

FIG. 3 is a side view for explaining a drive mechanism of the wall surface traveling robot.

FIG. 4 is a side view of a wall surface traveling robot.

FIG. 5 is an enlarged perspective view showing a part of a movable suction plate.

6 is a cross-sectional view taken along the line AA of FIG.

FIG. 7 is an explanatory cross-sectional view showing a state where a moving suction disk is sucked onto a wall surface.

FIG. 8 is a partially omitted explanatory view showing a positional relationship between a guide rail and an auxiliary guide rail.

9 is a view in the direction of arrow B in FIG.

FIG. 10 is an explanatory cross-sectional view showing a mounting state of a control unit and a movable suction plate.

FIG. 11 is an exploded perspective view showing the mounting relationship between the control unit and the movable suction plate.

FIG. 12 is a plan view showing a positional relationship between suction through holes of a control plate and suction through holes of a switching plate with respect to a control wheel.

13 is a cross-sectional view taken along the line CC of FIG.

FIG. 14 is a perspective view showing another embodiment of the wall surface traveling robot.

15 is a cross-sectional view taken along the line DD of FIG.

[Explanation of symbols]

 1 Wall-mounting robot 2 Frame body 3 Driving wheel (rotating wheel) 4 Driven wheel (rotating wheel) 5 Rotating band 6 Moving suction plate 8 Control unit 21 Enclosing frame 25 Elastic body 26 Internal slide frame 29 Friction surface

Claims (1)

[Claims] 1. A rotary band which is wound around two or more pairs of rotary wheels arranged at a predetermined interval in front of and behind a frame body and which rotates, and which is fixed to the rotary band through a mounting frame and runs on a wall surface. In a moving suction plate of a robot for wall surface traveling, which is sometimes equipped with a plurality of moving suction plates that can be sucked onto a wall surface by a suction action by a vacuum generator operation, the moving suction plate is a base frame fixed onto a mounting frame, A surrounding frame made of a flexible member provided on the base frame, a pedestal fixed on the mounting frame in the base frame, and a vertically movable arrangement between the base frame and the surrounding frame and the pedestal. And an elastic body that is mounted between the pedestal and the inner slide frame to urge the inner slide frame upward. And the pedestal and the inner slide frame communicate with the inside and outside respectively. Ventilation holes are provided, and the frictional surface of the inner slide frame and the tip of the surrounding frame are configured to be attracted to the wall surface by the suction force when the vacuum generator is activated. Board.