JP3540170B2 - Floor polishing cleaner - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a floor polishing machine for polishing or cleaning (brushing) a floor surface by rotating a pad or a brush at a high speed by a motor while running the machine body. A function to maintain the pressing force of the pad or brush to the floor evenly, a function to prevent dust from leaking from the dust cover, a function to easily attach and check the pad or brush, and other safety functions The present invention relates to a floor polisher cleaning machine provided with:
[0002]
[Prior art]
The prior art relating to the floor polisher of the present invention includes floor polishers described in JP-A-7-236604, Japanese Utility Model Registration No. 2545838, and JP-A-7-194509. And a waxing floor polishing and grinding apparatus described in JP-A-9-24006.
[0003]
The floor polisher having a pad pressing force adjusting function described in the first publication (Japanese Patent Application Laid-Open No. Hei 7-236604) rotates the pad at a high speed to make the inside of the pad a negative pressure state. While generating an attraction force on the floor, the pad is pressed against the floor against an upward spring force supporting the pad to generate a pad pressure on the floor.
[0004]
The pad suspension apparatus in the floor polisher described in the second publication (U.S. Pat. No. 2,558,838) discloses a pad suspension device that, when the pad is worn, turns the screw at an appropriate time to release the pad floor. The floor polisher, which is configured to adjust the contact pressure on the surface and has a dust blowing leakage prevention function described in the third publication (Japanese Patent Application Laid-Open No. 7-194509), is disclosed. By attaching a soft rubber seal skirt to the lower side of the pad cover, pad debris, dust and the like generated by polishing rotation of the pad are prevented from leaking from the pad cover due to high-speed rotation of the pad. .
[0005]
Further, the waxing floor polishing and grinding apparatus described in the fourth publication (Japanese Patent Application Laid-Open No. 9-24006) can easily replace the pad by moving the entire pad to an oblique angle. It is configured to have a mechanism for adjusting the pad pressure together with the configuration.
[0006]
[Problems to be solved by the invention]
However, the floor polisher described in the above-mentioned first publication increases the rotational force of the pad when the pad is worn and the distance between the pad and the floor surface is widened and the suction force is reduced. Since the adjustment is made so as to increase the attraction force generated between the floor and the floor, as a result, the power consumption of the drive motor increases, and the mounted battery is greatly consumed, and can be operated with one charge. There was a problem that time was shortened.
[0007]
Further, the suspension device described in the above-mentioned second publication has a problem that the operation becomes very complicated because the contact pressure of the pad to the floor surface is manually turned by turning the screw. In the floor polisher described in the third publication, a soft rubber seal skirt is in close contact with the floor surface during operation to prevent dust from leaking, but at the end of operation, the rotation of the drive motor is stopped. When the pad stops and the rotation of the pad slows down, the suction force of the pad to the floor decreases and the pad separates from the floor, and at the same time, the pad cover also lifts and separates from the floor, but during this time, the pad rotates due to inertia. Therefore, there is a problem that debris and dust inside the pad are scattered around by the inertial rotation of the pad.
[0008]
Furthermore, the waxed floor polishing and grinding apparatus described in the fourth publication requires the use of a number of motors and telescopic cylinders to move the pad to an oblique angle and adjust the pad pressure. Therefore, there is a problem that the structure is very complicated and the price is high. Further, since the pressure adjustment of the pad is performed by manually operating the adjustment lever, there is a problem that the adjustment becomes uncertain.
[0009]
SUMMARY OF THE INVENTION The present invention provides a floor polisher that solves the above-mentioned problems, and its technical problem is to always operate a driving motor with a stable electric current so that a pad or a brush and a floor are cleaned. And to generate a stable suction force between them so that the floor can be polished without unevenness.
[0010]
Still another technical problem of the present invention is to automatically detect when a pad is worn and automatically adjust the position of the pad or brush so as to be in an appropriate state, while stopping driving work. To prevent the dust in the dust cover from being scattered around by the inertial rotation of the pad or brush, and to move the pad or brush quickly to the pad replacement position with a relatively simple structure, making it easy to replace the pad or brush. In addition, the operation can be performed safely without damaging or damaging a pad, a brush, or a floor surface during driving.
[0011]
[Means for Solving the Problems]
Means taken by the present invention to solve the above technical problems are as follows.
[0012]
A floor polishing machine configured to rotate a pad or a brush mounted in a dustproof cover at a high speed with a motor while running the aircraft to perform polishing or cleaning of the floor,
[0013]
(1) A pad or a brush is attached to the tip of a lift lever having a root end serving as a fulcrum pivoted to the fuselage side, and a telescopic cylinder is connected to an intermediate portion of the lift lever via an elastic body to form a telescopic cylinder. With the pad or brush configured to be pressed against and separated from the floor surface by the expansion and contraction operation,The switching operation of the operation switch controls the expansion / contraction operation of the telescopic cylinder to change the entire pad or brush to the uppermost position from the floor surface at the replacement position, to the standby position slightly away from the floor surface horizontally, and to push the pad or brush onto the floor surface. Position movement control means capable of switching and moving to three different operation positions in contact with each other;Reading means for reading the current value of the drive motor rotating the pad or the brush; current value comparing means for comparing the read current value with a preset reference current value; and setting the current value of the drive motor. Pressure adjusting means for operating the telescopic cylinder to adjust the pressing force of the pad or the brush against the floor surface so that the reference current value is obtained.WhenBe provided. (Claim 1)
[0014]
(2) On the fuselage side, the upward movement of the rear end of the pad or brush, which is raised toward the uppermost replacement position by the telescopic cylinder, is regulated in the middle, and the entire pad or brush is obliquely lowered with respect to the floor surface. Provide a stopper that stops the machine toward (Claim 2)
[0015]
(3) The entire pad or brush is configured to be pressed against and separated from the floor surface by using an extendable cylinder, and rotation of the pad or brush is started after the dust cover comes into contact with the floor surface. Rotation start control means for performing, a brake means for forcibly stopping the rotation of the pad or the brush, and after the rotation is completely stopped by the brake means, control the above-mentioned telescopic cylinder to move the pad or the brush on the floor surface. A lifting control means for raising the vehicle from the parking position to the standby position. (Claim 3)
[0016]
(4) When the current value of the drive motor that rotates the pad or the brush is read, and the read current value is compared with a preset current value, and the current value of the drive motor falls below the preset current value. Then, stop the rotation of the drive motor and control the telescopic cylinder to raise the pad cover and the whole pad or brush, or if there is no pad or brush, raise only the dust cover to a predetermined position on the floor surface. Provide emergency control means. (Claim 4)
[0017]
(5) Provide emergency obstacle avoidance means capable of forcibly and temporarily raising the entire pad or brush to the standby position while the body is running. (Claim 5)
[0018]
According to the means of claim 1 described in the above (1), when the pad or brush is worn by use, or when the floor surface is uneven, the change of the pressure of the pad or brush on the floor surface is determined. By detecting by detecting the current value of the drive motor and controlling and operating the telescopic cylinder according to the change of this current value, the changed pressing force of the pad or brush is automatically adjusted, and the pad or brush is always By pressing against the floor surface with a constant pressing force, it is possible to always exert the same polishing or cleaning effect.
[0019]
AlsoAccording to the means according to claim 1 described in the above (1), the pressing force of the pad or brush on the floor can be adjusted according to the control operation of the telescopic cylinder, and the attraction force and elasticity of the pad or brush on the floor can be adjusted. Due to the balance with the body, the pad or brush is always in contact with the floor surface at a constant pressure, and the elastic body absorbs instantaneous pressure changes caused by irregularities on the floor surface, etc., The polishing work with a pad or a brush can be performed extremely smoothly.
[0020]
Further, according to the means according to claim 1 described in the above (1), the pad or the brush can be held at the standby position slightly horizontally separated from the floor surface before work, when the work is stopped, when safety is ensured, and the like. At the same time, at the start of the work, the pad or the brush can be lowered to the operating position for pressing the floor, and the floor can be polished or brushed.
[0021]
According to the means according to claim 2 described in the above (2), when replacing or repairing the pad or brush, the pad or brush is raised to the replacement position to be inclined, so that replacement work or other repair work is performed. Can be easily performed.
[0022]
According to the means according to claim 3 described in the above (3), the rotation of the pad or the brush is started after the dust-proof cover comes into contact with the floor, so that the driving motor is rotated at a high speed at the start of operation. The pad or brush does not blow off dust around the dust-proof cover, and when the operation is stopped, the pad or brush does not rise to the standby position unless the rotation of the pad or brush is completely stopped by the brake means. Therefore, the dust remaining in the dustproof cover is not scattered around by the inertial rotation of the pad or the brush, and can be kept in the dustproof cover.
[0023]
According to the means according to the fourth aspect described in the above (4), even when the operation is started with forgetting to attach the pad or the brush, the load applied to the drive motor is reduced and the current value is reduced, so that the constant value is maintained. Judging that there is no pad or brush installed, stops the rotation of the drive motor and immediately raises the dust-proof cover, preventing the accident of damaging the floor surface by rotating the drive motor without the pad or brush installed To be able to
[0024]
According to the means according to claim 5 described in the above (5), since the pad or the brush can be temporarily raised from the floor in an emergency, for example, a foreign object such as an outlet or a stone is found on the floor during driving. Then, when the pad or brush is lifted immediately, it is possible to prevent the pad or brush from being damaged due to foreign matter being caught or an accident such as damaging the floor surface.
[0025]
As described above, the technical problems described above can be solved by the means (1) to (5), and the problems of the conventional technology can be solved.
[0026]
BEST MODE FOR CARRYING OUT THE INVENTION
BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an embodiment of a floor polishing machine according to the present invention will be described with reference to the drawings. FIG. 1 is a side view illustrating the appearance of the present invention, wherein 1 is a floor polishing machine. 2, 2 and 3 are traveling wheels, 2M is a traveling motor, 1X is a battery serving as a power source mounted in the aircraft 1, and 21 is a lift lever 27 mounted on a front portion of the aircraft 1 to be vertically movable. A motor base, 27B a mounting shaft thereof, 22M a drive motor mounted on the upper surface of the motor base 21, a dust cover generally indicated by reference numeral 20, and a seal 24 mounted on the lower side of the dust cover 20. A pad or brush 22, which is a skirt and is rotated at a high speed by the drive motor 22M, is mounted inside the dustproof cover 20, as shown in FIGS.
[0027]
In the present invention, when a pad is mounted inside the dust cover 20, the body 1 becomes a floor polisher, and when a brush is mounted, the body 1 becomes a floor cleaner for brushing the floor. Thus, the following description will be made with reference to a floor polishing machine to which the pad 22 is attached.
[0028]
Reference numeral 20B denotes a dust hose for sending dust generated on the dust cover 20 by the high-speed rotation of the pad 22 to a dust box 20X mounted on the body 1, 4 denotes an operating handle mounted on the rear upper side of the body 1, 5 denotes a handle mounted on the handle 4. The operation box 5 is configured as shown in FIGS.
[0029]
FIG. 2 is a rear view of the operation box 5, and FIGS. 3 and 4 are a plan view and a side view, respectively. In these drawings, 6 is a handle switch for power supply, and 10 is both sides of the back of the operation box 5. The reverse switches 11 and 12 are provided for setting the pad pressure and for setting the speed similarly on both sides of the back of the operation box 5, and these setting switches 11 and 12 are normally in the neutral position. When the upper end portion 11A of the pad pressure setting switch 11 is pressed, the rotation speed of the drive motor 22M for the pad 22 is increased to increase the pad pressure (brush pressure), and conversely, when the lower end portion 11B is pressed. , The rotational speed of the drive motor 22M is reduced to reduce the pad pressure (brush pressure).
[0030]
When the upper end 12A and the lower end 12B of the speed setting switch 12 are pressed, the rotation of the traveling motor 2M is increased or decreased to adjust the traveling speed of the body 1. Further, on the upper surface of the operation box 5, the rotation of the power lamp 5A, the power meter 5B, the speed lamps 7A, 7B, 7C, the pad pressure lamps 8A, 8B, 8C, and the pad 22 are turned on. A pad rotation switch 13 for turning on / off and a display lamp 9A thereof, and a pad exchange switch 14 for turning on / off pad exchange and an indication lamp 9B thereof are provided. When the pad exchange switch 14 is turned on, the pad 22 and its dustproof are provided. The entire cover 20 is configured to move up to the pad replacement position shown in FIG. 7 so that the pad 22 can be replaced easily.
[0031]
Further, on both sides of the operation box 5, an emergency stop button 15 for instantaneously stopping the running of the body 1 and the rotation of the pad 22 in an emergency, and when an foreign object such as an outlet or a stone is found on the floor surface during driving. , The pad 22 and the dust cover 20 are instantaneously lifted to the standby position shown in FIG. 5 to prevent a foreign object from being caught. When the hand is released from the pad 16, the pad 22 and the dust cover 20, which have been raised to the standby position, are automatically lowered to the operation position shown in FIG. 6, that is, the position for polishing the floor surface again.
[0032]
Next, a mechanism for raising and lowering the pad 22 and the dust cover 20 based on the description of FIGS. 5 to 7 will be described. FIG. 5 shows a standby position, FIG. 6 shows an operation position, and FIG. In these drawings, reference numeral 26 denotes a chassis provided on the body 1, reference numeral 29 denotes a column protruding above the chassis 26, and reference numeral 29A denotes an electrical plate protruding above the column 29. A root end of a lift lever 27 having a motor shaft 21 rotatably mounted at a distal end thereof using a mounting shaft 27B is vertically rotatably mounted on the chassis 26 using a mounting shaft 27A. .
[0033]
Reference numerals 30A and 30B denote a spring arm and a cylinder arm which are attached to an intermediate portion of the support column 29 by using an attachment shaft 30 so as to be vertically rotated integrally. The distal end of the spring arm 30A and the lift lever 27 Upper and lower ends of an elastic body 31 having a structure in which a spring 31S is housed in a tube are rotatably mounted on shafts 31A and 31B between the middle part and the front end of the cylinder arm 30B and the chassis 26. Both ends (specifically, the upper end of the piston rod and the root end of the cylinder body) of the electric telescopic cylinder 32 are rotatably mounted between the lower mounting plate 26A and the lower mounting plate 26A. I have.
[0034]
The telescopic cylinder 32 normally holds the pad 22 and the dustproof cover 20 in the standby position shown in FIGS. 1 and 5, that is, the pad 22 at a position slightly separated from the floor surface. When the switch 13 is turned on, the pad 22 operates in the retracting direction (down direction) before the pad 22 starts rotating, and the lift lever 27 is rotated downward via the elastic body 31 so that the pad 22 is moved together with the dustproof cover 20. In the operation position shown in FIG. 6, that is, when the pad 22 is lowered to the position where the pad 22 is pressed against the floor surface and the pad exchange switch 14 is turned on, after the rotation of the pad 22 is completely stopped, On the contrary, it operates in the projecting direction (up direction), and also rotates the lift lever 27 upward via the elastic body 31 to replace the pad 22 with the dustproof cover 20 as shown in FIG. It is configured to rise location.
[0035]
When the pad 22 is raised to the replacement position shown in FIG. 7 by the telescopic cylinder 32, the stopper portion 26T provided on the chassis 26 comes into contact with the rising upper surface of the dustproof cover 20 on the rear end side. 7, the pad 22 is stopped together with the dust-proof cover 20 in a state where the pad 22 is tilted downward and rotated with respect to the floor surface, so that the pad holding bolt 22B is removed and the pad 22 is moved to the pad base 22C. When the pad 22 rises and reaches the replacement position, the limit switch 33 attached to the electrical component plate 29A is turned on as shown in FIG. Then, all the operating mechanisms, that is, the mechanism for stopping the operation of the telescopic cylinder 32 and the motors 2M and 22M are configured.
[0036]
Further, the current value of the drive motor 22M of the pad 22 is read into the telescopic cylinder 32 described above, and the current value is compared with a preset reference current value. Control means for operating the telescopic cylinder 32 so as to obtain the current value and adjusting the pressing force of the pad 22 against the floor surface, that is, the rotation of the pad 22 is completely stopped by the pressing adjusting means and the braking means described below. After that, the lift control means for raising the pad 22 to the standby position shown in FIG. 5 or the exchange position shown in FIG. 7 is connected.
[0037]
Further, as described above, the drive motor 22M for the pad 22 starts rotation of the pad 22 after the dust-proof cover 20 completely contacts the floor surface, that is, the home motor attached to the chassis 26 as shown in FIG. Rotation start control means for starting after a short time (for example, 0.5 seconds) after the position sensor 28 is shielded (ON) by the shield plate 27C attached to the lift lever 27 that is descending and rotating, When the pad rotation switch 13 is turned off to stop the rotation of the pad 22, the retractable cylinder 32 is retracted to press the pad 22 against the floor, thereby forcibly stopping the rotation of the pad 22. The means are linked.
[0038]
In addition, the pad drive motor 22M reads the current value of the drive motor 22M and compares it with a reference value. If the current value falls below a preset current value, it is determined that the pad 22 is not mounted. Upon determination, the rotation of the drive motor 22M is stopped, and the telescopic cylinder 32 described above is operated to move the dustproof cover 20 on which the pad 22 is not mounted to the standby position shown in FIG. 5 or the replacement shown in FIG. Emergency control means for raising the position is connected.
[0039]
FIG. 8 illustrates the structure of a seal skirt for preventing dust leakage attached to the lower end of the above-described dust-proof cover 20. In the figure, reference numeral 20A denotes a rubber bumper attached to the lower edge of the dust-proof cover 20; Is attached to the bumper 20A at one end 23A by a rubber ring 23P, and the intermediate portion 23T is sewn 23H to the inner surface of a nylon skirt 24 coated with a resin, and further folded back to sew the upper end thereof to the skirt 24. The portion 23B is a piece of canvas in which the core 23R is attached to a synthetic resin molding 25, and the portion 23C is an inner cover similarly sewn to the inner surface of the skirt 24. FIG. 8 shows a state at the time of operation in which the pad 22 is in contact with the floor surface, and FIG. 8B shows a state at the time of standby in which the pad 22 is separated from the floor surface as shown in FIG. .
[0040]
FIG. 9 is a block diagram illustrating the electrical configuration of the present invention. In FIG. 9, reference numeral 41 denotes a CPU, 42 and 43 are a ROM and a RAM connected to the CPU 41 through a bus 44, and 46 is a bus through a bus 45. The CPU 41, the ROM 42, the RAM 43, and the I / O port 46 constitute an I / O port belonging to the CPU 41. The control unit 40 of the floor polishing cleaner according to the present invention is constituted by the I / O port.
[0041]
The I / O port 46 includes the above-described various switches 6, 10, 11A, 11B, 12A, 12B, 13, 14, 33, the emergency stop button 15, the obstacle avoidance button 16, and the traveling motor 2M. The speed controller 2S, the drive motor 22M for the pad, the current detection sensor 22S, the home position sensor 28, and the telescopic cylinder 32 are connected as shown in the figure, and each is stored in the ROM 42 under the supervision of the CPU 41 in accordance with each program. The ROM 42 stores programs for implementing the various means described in the claims.
[0042]
Next, the operation of the present invention will be described in accordance with the flowcharts shown in FIGS.
[0043]
In the first step S1, a key switch for power supply (not shown) is turned on, and then in step S2, it is determined whether or not a manual switch (also used for a switch 11A for setting pad pressure) is turned on for 3 seconds or more. In this case, the operation proceeds to the manual mode in step S3, that is, the service mode in which each operation is individually operated. In the case of NO, the operation proceeds to step S4 to check the current position of the pad 22 from the ON / OFF state of the home position sensor 28. Then, proceeding to step S5, when the home position sensor 28 is ON, the telescopic cylinder 32 is moved up and the pad 22 is raised until the home position sensor 28 is turned OFF. Conversely, when the sensor 28 is OFF, it is turned ON. After the pad 22 is lowered, the pad 22 is raised again until it is turned off, and the pad 22 is moved to the standby position shown in FIG. Set to.
[0044]
Next, the process proceeds to step S6, where the ON / OFF of the pad exchange switch 14 is determined. If the pad exchange switch 14 is OFF (if not ON), the process directly proceeds to step S7. The pad 22 is pushed up to operate the pad 22 in the exchange position shown in FIG. 7 to enable exchange and setting.
[0045]
Thereafter, the process proceeds to step S9, where it is determined whether or not the pad exchange switch 14 has been turned ON again. If the pad exchange switch 14 has been turned ON (ON when the pad exchange is completed), the process proceeds to step S10 where the telescopic cylinder 32 removes the pad. Then, the process proceeds to step S11, where ON / OFF of the home position sensor 28 is determined. If the home position sensor 28 is ON, the process proceeds to step S12, where the pad 22 is further lowered for 3 seconds, and then raised again in step S13. This raising is performed until the home position sensor 28 is turned off in step S14, that is, until the home position sensor 28 reaches the standby position shown in FIG. 5, and the process proceeds to step S7.
[0046]
In step S7, ON / OFF of the handle switch 6 is determined. If the handle switch 6 is OFF (if not ON), the process returns to step S6 described above and is repeated, and if it is turned on, the process proceeds to step S15 shown in FIG. 10 is determined to be ON / OFF, and if ON, the process proceeds to step S16, the traveling motor 2M is reversed, the body 1 is moved backward, and the process proceeds to step S19. If OFF (if not ON), step S17 is performed. Then, the ON / OFF of the speed setting switch 12 is determined. If the speed setting switch 12 is OFF (if it is not ON), the process returns to step S6 shown in FIG. 10, and if it is ON, the process proceeds to step S18 to rotate the traveling motor 2M forward. Then, the body 1 is advanced at a low speed, and the process proceeds to step S19.
[0047]
In step S19, ON / OFF of the handle switch 6 is determined. When the handle switch 6 is OFF (when not turned ON), the process proceeds to step S21 shown in FIG. 10 to stop the traveling of the body 1, and then the pad 22 is rotating. In this case, after the telescopic cylinder 32 is moved down to push the dustproof cover 20 against the floor, the rotation of the pad 22 (the rotation of the motor 22M) is stopped, and then the process returns to step S4 to repeat the above-described processing. If it is turned on, the process proceeds to the next step S20.
[0048]
In step S20, ON / OFF of the reverse switch 10 is determined. If it is OFF (if it is not ON), the process proceeds to the next step S23, where it is determined whether or not the vehicle is moving forward. If not, the process proceeds to step S27. If the vehicle is not moving forward (NO), the process proceeds to step S28 to stop traveling for one second, and then proceeds to step S29 to start forward at low speed and proceeds to step S27.
[0049]
In step S27, it is determined whether the speed setting switch 12 is OFF (as before), whether the upper end 12A (up switch) is ON, or whether the lower end 12B (down switch) is ON. If the switch is OFF, the process proceeds to step S32 shown in FIG. 12, but if the down switch 12B is turned on, the process proceeds to step S30 to reduce the traveling speed, and if the up switch 12A is turned on, the process proceeds to step S31. After proceeding to increase the traveling speed, the process proceeds to step S32 in FIG. 12, respectively.
[0050]
If the reverse switch 10 is turned on in step S20 described above, the process proceeds to step S24, where it is determined whether the vehicle is moving forward. If NO, the process proceeds to step S25 to move the body 1 backward. The process proceeds to step S32, but if YES (if the vehicle has been moving forward), the process proceeds to step S26 to stop traveling for one second, and then proceeds to step S25 to start reverse.
[0051]
In step S32, it is determined whether the pad 22 is rotating. If the pad 22 is rotating, the process proceeds to step S37. If the pad 22 is stopped, the process proceeds to step S33 to determine whether the pad rotation switch 13 is ON / OFF. If it is ON, the process proceeds to step S34, where the telescopic cylinder 32 pushes down the pad 22 for 1.7 seconds and presses the pad 22 against the floor surface, and after 0.5 seconds has elapsed since the pad 22 started rotating. Then, the mounting of the pad 22 is checked, that is, the current value of the drive motor 22M is checked. Then, the mounting check is determined in step S36. If OK, the process returns to step S19 shown in FIG. If the current value is lower than the set value, the process proceeds to step S35 to stop the rotation of the drive motor 22M, and then After returning the dust-proof cover 20 to the standby position shown in FIG. 5 by activating the pad 32, the process returns to step S19 shown in FIG. And
[0052]
Also, when it is determined that the pad is turned off (not turned on) in step S33, the process proceeds to step S35, and when the pad rotation switch 13 is turned off (when rotation is stopped) in step S37, In step S39, the rotation of the pad 22 is forcibly stopped by lowering the telescopic cylinder 32 and pressing the pad 22 against the floor surface, and then the process proceeds to step S35 described above.
[0053]
On the other hand, if it is determined in step S37 that the pad rotation switch 13 is ON, that is, if it is determined that the pad is rotating, the process proceeds to the next step S38, where ON / OFF of the obstacle avoidance button 16 is determined, and ON is performed. In this case, the rotation of the pad 22 is stopped, and then the telescopic cylinder 32 is operated to move to the standby position in FIG. 5, and then the operation returns to 19 in FIG. 11 to repeat the operation. If no, the process proceeds to step S40, in which the pad 22 is rotated at the set pressure set by the pad pressure setting switch 11 to polish the floor, and then, in step S41, the current value of the drive motor 22M is read. In step S42, by comparing the set value with the read current value, if necessary, the expansion / contraction cylinder 32 is controlled to operate to adjust the pad pressure to the above set pressure. Continue the operation returns to the step S19 of.
[0054]
The pad pressure set in step S40 is, for example, as follows.
(1) 55A standard → low rotation mode 2000rpm
(2) High 65A → high rotation mode 2150rpm
(3) 75A super strong → high rotation mode 2050rpm
[0055]
The adjustment of the pad pressure performed in step S42 is performed, for example, as follows.
(1) When the current is 5 amperes or more larger than the set value → Pad is increased by 0.2 seconds
(2) When the value is 10 amperes or more larger than the set value → pad 0.5 seconds up
(3) When the current value is 5 amperes or more smaller than the set value → pad 0.1 second down
(4) When the current value is smaller than the set value by 10 amperes or more → Pad is down for 0.2 seconds
[0056]
FIG. 13 is a configuration diagram for explaining the whole of the present invention.
[0057]
【The invention's effect】
As described above, according to the floor polishing machine according to the present invention, the drive motor is always operated with a stable current to generate a stable suction force between the pad or the brush and the floor. Because it is possible to polish the floor surface evenly and cleanly, when the pad or brush is worn, the pressure of the pad or brush is adjusted and the floor surface is constantly polished with a constant pressure. The point that can be done, that the dust accumulated in the dust cover due to the rotation of the pad or brush can be polished cleanly without leaking to the outside, and the replacement of the pad or brush is extremely easy In addition to the fact that it is possible to perform work safely and that the work can be carried out safely by preventing the intrusion of foreign substances during operation, it is perfectly suitable as a floor polishing machine and a floor cleaning machine Something .
[Brief description of the drawings]
FIG. 1 is a side view illustrating the appearance of a floor polishing cleaner according to the present invention.
FIG. 2 is a rear view of the operation box used in the present invention.
FIG. 3 is a plan view of the operation box.
FIG. 4 is a side view of the operation box.
FIG. 5 is a sectional view of a main part of the present invention in a state where a pad is in a standby position.
FIG. 6 is a sectional view of a main part of the present invention in a state where a pad is in an operation position.
FIG. 7 is a cross-sectional view of a main part of the present invention in a state where a pad is in a replacement position.
FIG. 8 is a cross-sectional view illustrating a structure of a seal skirt attached to a dust-proof cover, wherein (a) is a cross-sectional view illustrating a state during operation, and (b) is a cross-sectional view illustrating a state during standby.
FIG. 9 is a block diagram illustrating an electrical configuration of the present invention.
FIG. 10 is a flowchart illustrating the operation of the present invention.
FIG. 11 is a flowchart illustrating a continuation of the flowchart shown in FIG. 10;
FIG. 12 is a flowchart illustrating a continuation of the flowchart shown in FIG. 11;
FIG. 13 is a configuration diagram illustrating the overall configuration of the present invention.
[Explanation of symbols]
1 aircraft
2 wheels
2M traveling motor
16 Obstacle avoidance button
20 Dustproof cover
22 pads or brushes
22M drive motor
26T stopper
27 Lift lever
31 Elastic body
32 telescopic cylinder

Claims (5)

A floor polishing machine configured to rotate a pad or a brush mounted in a dustproof cover at a high speed with a motor while running the aircraft to perform polishing or cleaning of the floor,
A pad or brush is attached to the tip of the lift lever whose pivot end is pivotally attached to the fuselage side, and an extendable cylinder is connected to the intermediate part of this lift lever via an elastic body. The pad or brush is configured to be pressed against and separated from the floor, and the operation of the operation switch is controlled to control the expansion and contraction of the telescopic cylinder so that the entire pad or brush is moved to the uppermost limit from the floor. Position change control means capable of moving by switching between three positions, namely, an exchange position, a standby position slightly separated from the floor surface, and an operation position for pressing against the floor surface, and rotating the pad or brush. Reading means for reading a current value of the drive motor to be read; current value comparing means for comparing the read current value with a preset reference current value; Current values as is set reference current value, out floor gloss is characterized by providing a pressure adjusting means for adjusting the pressing force of the pad or brush against the floor surface by operating the telescopic cylinder Cleaning machine. On the fuselage side, the telescopic cylinder was used to restrict the upward movement of the rear end of the pad or brush, which was raised toward the uppermost replacement position, so that the entire pad or brush was directed obliquely downward with respect to the floor. The floor polishing machine according to claim 1, further comprising a stopper for stopping the cleaning in a state. A floor polishing machine configured to rotate a pad or a brush mounted in a dustproof cover at a high speed with a motor while running the aircraft to perform polishing or cleaning of the floor,
The entire pad or brush is configured to be pressed against and separated from the floor surface by using a telescopic cylinder, and the rotation of the pad or brush is started after the dust cover comes into contact with the floor surface. Control means, brake means for forcibly stopping rotation of the pad or brush, and after the rotation is completely stopped by the brake means, control the telescopic cylinder to move the pad or brush from the floor to a standby position. A polisher for cleaning a floor surface, comprising a rising control means for raising the floor. The current value of the drive motor that rotates the pad or the brush is read, the read current value is compared with a preset current value, and when the drive motor current value falls below the preset current value, the drive is performed. Emergency control that stops the rotation of the motor and controls the telescopic cylinder to raise the entire pad cover and pad or brush, or if there is no pad or brush, only the dust-proof cover to a predetermined position on the floor. 4. A floor polishing machine according to claim 1, further comprising means. 5. An emergency obstacle avoiding means which can forcibly and temporarily raise the entire pad or brush to the standby position while the body is running, and further comprises an emergency obstacle avoiding means. 2. The floor polishing cleaner according to 1.

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