JP3754366B2 - Gate-type car wash machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a gate-type car wash machine for performing a car wash by relatively moving a vehicle body and a gate-type frame straddling the vehicle body, and spraying a car wash medium such as a cleaning liquid sprayed from a nozzle installed on the gate-type frame onto the vehicle body. .
[0002]
[Prior art]
2. Description of the Related Art Conventionally, in this type of door-type car wash machine, a car wash technique for performing a side car wash by spraying a washing medium onto a side face of a vehicle body from a side nozzle that repeats lifting and lowering operations has been widely known. In this case, since the movement distance in the vertical direction of the side nozzle varies depending on the vehicle height, when the movement speed of the side nozzle is constant, the time required for each ascending or descending operation changes, The longitudinal movement amount of the vehicle body that moves in the meantime also varies. Therefore, the longitudinal interval of the vehicle body on the side surface of the vehicle body on which the jet flow is sprayed from the side nozzle, that is, the spray pitch varies depending on the vehicle height of the car wash portion (that is, the height of the vehicle body of the spray portion) . This is a cause of processing unevenness. Therefore, by adjusting the raising / lowering speed of the side nozzle according to the vehicle height, the time required for raising or lowering the side nozzle is made constant, the spray pitch in the longitudinal direction of the vehicle body is equalized, and processing unevenness is reduced. The thing which aimed at elimination is disclosed (patent 2575588). However, according to this conventional technique, the cleaning time per unit area varies due to the variation in the lifting speed of the side nozzles. There was a problem of causing.
[0003]
Furthermore, as a technical means for eliminating fluctuations in the longitudinal pitch of the vehicle body due to fluctuations in the vehicle height of the sprayed part, it relates to relative movement between the vehicle body and the portal frame according to the vehicle height of the sprayed part. A method of adjusting the speed is also possible. According to this method, the aforementioned processing unevenness in the longitudinal direction of the vehicle body due to fluctuations in the vehicle height can be eliminated while the moving speed of the side nozzles is maintained at a constant speed. However, in the case of this technical means, the relative movement speed of the vehicle body and the portal frame fluctuates, so that the processing unevenness on the side surface can be eliminated, but the upper surface car wash for the upper surface of the vehicle body that is performed concurrently with the side surface processing. There was a problem of causing processing unevenness in the work. That is, since the vehicle width is substantially constant, the movement speed in the vehicle width direction of the upper surface nozzle is also generally set to a constant speed, so fluctuations related to the relative movement speed between the vehicle body and the portal frame are not This caused processing unevenness in the upper surface car wash operation.
[0004]
[Problems to be solved by the invention]
The present invention was developed in view of the conventional technical situation as described above, and does not affect the car washing action on the upper surface of the vehicle body that is performed simultaneously with the side car washing, and thus the conventional processing in the side car washing. An object of the present invention is to provide a portal type car wash machine that can eliminate unevenness.
[0005]
[Means for Solving the Problems]
To solve the above problems, the invention of claim 1, the vehicle body side relatively moving substantially at a constant speed in the longitudinal direction, blowing position is configured to repeat the temperature descending within the vehicle height In a gate type car wash machine that performs car washing by spraying a car wash medium from a side nozzle, the car wash on the side of the vehicle body is controlled by controlling the discharge state of the car wash medium sprayed from the side nozzle according to the height of the spray part. Adopted technical means to equalize the action. Here, the repeated temperature descending within spraying position of the vehicle height, it means that blowing position from the side nozzle repeats an elevation within the vehicle height, the lifting range of necessarily nozzle itself There is no need to match. Moreover, the setting according to the case is possible regarding the lower limit position of spraying. The invention of claim 2 employs technical means for controlling the discharge pressure of the car wash medium sprayed from the side nozzles to increase as the vehicle height of the sprayed portion increases. According to the present invention, by adopting the technical means, the variation in the longitudinal spray pitch of the vehicle body based on the variation in the vehicle height of the car wash portion, that is, the height of the vehicle body in the spray portion , Processing unevenness due to fluctuations related to the cleaning time can be eliminated by control according to the height of the car wash medium ejected from the side nozzles. For example, if the spray pitch in the longitudinal direction of the vehicle body fluctuates, the number of sprays on the same treated surface will increase and decrease to change the car wash action, but the effect on the car wash action will depend on the car wash medium according to the height of the spray part . Since it can be complemented by control relating to the discharge pressure and spray area, the car wash action is eventually equalized. By the way, when the vehicle height of the processing part, that is, the height of the body of the spraying part becomes high, the spraying pitch is enlarged, and the number of spraying to the part is reduced and the spraying density is reduced. On the other hand, since the discharge pressure of the car wash medium and the range of spraying are increased in accordance with the vehicle height, fluctuations in the cleaning action are complemented, and the occurrence of processing unevenness is eliminated. In addition, since the speed of the relative movement in the longitudinal direction of the vehicle body is almost constant, there is no effect on the car washing action on the upper surface of the vehicle body that is performed in parallel with the side car washing process. Good finish without unevenness is possible.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
INDUSTRIAL APPLICABILITY The present invention can be widely applied to a gate type car wash machine that performs a car wash process by spraying a car wash medium such as a washing liquid sprayed from a nozzle onto the surface of a vehicle body. It is not limited by the type of liquid used for work. For example, the present invention may be applied to a cleaning process using only water, or may be applied to a cleaning process using a cleaning liquid obtained by adding a detergent or the like to water. Furthermore, the present invention can be applied when using a liquid to which wax or the like is added. Further, there is no limitation on a specific control mode related to position control for raising and lowering the side nozzles according to the vehicle height and a specific control mode related to discharge pressure control of the car wash medium ejected from the nozzles. It is also effective to increase or decrease the nozzle spray area according to the discharge pressure of the car wash medium. In this case, for example, when the vehicle height of the sprayed portion is increased and the spray pitch is increased, the discharge pressure of the car wash medium is increased according to the vehicle height, and the spray area is enlarged to increase the car wash range. Therefore, processing unevenness can be more effectively eliminated. In addition, if applied to a mode in which the spray pitch is always kept constant by controlling the lifting speed according to the vehicle height, it is possible to eliminate the processing unevenness associated with the fluctuations related to the cleaning time per unit area. is there. In this case, since the spray pitch is constant, there is no need to increase or decrease the spray area of the side nozzle.
[0007]
【Example】
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic front view showing a main part of a drive mechanism related to a cleaning nozzle installed inside a portal frame according to an embodiment of the present invention, and FIG. 2 is a schematic side view thereof. In the figure, reference numeral 1 denotes a portal frame, which is configured to move on a guide rail (not shown) via a drive wheel 3 driven by a motor 2 and to move relative to the vehicle body. In this embodiment, the rotary encoder 5 is used to set the rotation amount of the free wheel 4 in the free state that rotates with the movement of the portal frame 1 so that an error due to slip does not occur in the process of obtaining the movement amount of the portal frame 1. It was configured to detect and input to the control device 6. The control device 6 calculates the movement amount of the portal frame 1 based on the rotation amount of the free wheel 4 and further calculates the current position of the nozzle based on the movement amount of the portal frame 1. The operation of the motor 2 in this embodiment is configured to be controlled via the inverter 7.
[0008]
As shown in FIG. 1, in this embodiment, as a cleaning nozzle, an upper surface nozzle 8 that sprays cleaning liquid on the upper surface of the vehicle body, and side nozzles 9 and 10 that spray cleaning liquid on the side surface of the vehicle body. Was provided. The upper surface nozzle 8 is installed on the support frame 11 so as to be movable in the vehicle width direction by an endless transmission band 13 made of a chain or the like that is driven by a motor 12, and reciprocates at a predetermined speed in the vehicle width direction during upward cleaning. It was configured to repeat. Further, the upper surface nozzle 8 is configured so that the inclined state along the full length direction of the vehicle body can be adjusted by the motor 14. The support frame 11 has an endless transmission band 19 such as a chain stretched between a drive wheel 17 made of a sprocket or the like driven at one end by a motor 15 via an intermediate wheel 16 and a driven wheel 18. The other end was supported by an endless transmission band 23 stretched between a drive wheel 21 and a driven wheel 22 connected to the driven wheel 18 via a connecting shaft 20. The rotation amount of the connecting shaft 20, that is, the rotation amounts of the driven wheel 18 and the driving wheel 21 at both ends of the connecting shaft 20 is detected by the rotary encoder 24 and input to the control device 6, that is, the height of the support frame 11, The height of the upper surface nozzle 8 was calculated. In the control device 6, the motor 15 is controlled via the inverter 25 so that the height of the upper surface nozzle 8 coincides with the relative positional relationship with the vehicle body and the target height determined from the vehicle shape. As for the side nozzles, one side nozzle 9 is supported by an endless transmission band 29 stretched between a drive wheel 27 and a driven wheel 28 to which a motor 26 is connected, and is used for the other side surface. The nozzle 10 was supported by an endless transmission band 33 stretched between a driving wheel 31 and a driven wheel 32 connected to the driving wheel 27 via a connecting shaft 30. Both the side nozzles 9 and 10 spray the cleaning liquid in a zigzag manner on the side surface of the vehicle body while repeatedly raising and lowering at a predetermined speed. The repetitive control of the raising / lowering operation on the side nozzles 9 and 10 is based on the amount of rotation of the connecting shaft 30 detected by the rotary encoder 34, that is, the amount of rotation of the drive wheels 27 and 31. Then, the height of the side nozzles 9 and 10 is calculated by the control device 6, and the motor 26 is moved so that the spray position moves up and down according to the vehicle height based on the vehicle shape data based on the height position data. This is done by driving control.
[0009]
As shown in FIG. 2, the upper surface nozzle 8 is connected to the tank 36 through the supply pipe 35, and injects the car wash medium in the tank 36 that is pumped by the pump 37. In this embodiment, the tank 36 is divided into a washing water tank 39 and a detergent tank 40 by a partition wall 38, and a car wash medium is set from the combination by switching valves 41 and 42. The pump 37 is configured to be driven by a motor 43, and is configured to control the discharge pressure of the car wash medium ejected from the upper surface nozzle 8 through the control of the motor 43 by the inverter 44 connected to the control device 6. did. Similarly, the side nozzles 9 and 10 are connected to the tank 36 via a supply pipe 45 and are set by a switching valve 47 and 48 from a combination of a washing water tank 39 and a detergent tank 40 by pressure feeding by a pump 46. The medium was jetted. The pump 46 is configured to be driven by a motor 49 so as to control the discharge pressure of the car wash medium ejected from the side nozzles 9 and 10 through the control of the motor 49 by the inverter 50 connected to the control device 6. Configured. Of course, it is possible to provide a tank mixed with wax or the like in addition to the tank 36 and spray from the upper surface nozzle 8 or the side surface nozzles 9 and 10 with the same configuration.
[0010]
Therefore, when performing the cleaning operation, in this embodiment, the portal frame 1 is moved, and as shown in FIG. 2, for example, a light projecting and receiving unit composed of a number of pairs of light emitting elements and light receiving elements installed on the portal frame 1 is used. The vehicle shape is detected in advance using the vehicle shape detection means 51, or a predetermined cleaning process is executed while detecting the vehicle shape. Incidentally, the vehicle shape detection means 51 recognizes the vehicle shape from the uppermost position where the beam from the light emitting element is blocked by the vehicle body. In the cleaning step, the controller 6 calculates the current height of the upper surface nozzle 8 based on the rotation amount of the connecting shaft 20 detected by the rotary encoder 24, that is, the rotation amounts of the driven wheel 18 and the drive wheel 21. In addition, based on the relative position of the nozzle to the vehicle body calculated based on the rotation amount of the free wheel 4 detected by the rotary encoder 5 and the vehicle shape data obtained from the vehicle shape detection means 51, the vehicle height at the current position, that is, the spraying The height of the part of the vehicle body is obtained, and the control is executed while controlling the height of the upper surface nozzle 8 along the vehicle shape through the control of the motor 15 by the inverter 25. In the figure, reference numeral 52 denotes an upper drying nozzle for drying treatment installed in front of the vehicle shape detecting means 51, and 53 denotes left and right side drying nozzles.
[0011]
Next, the characteristic part of the present invention will be described. The present invention is characterized in that processing unevenness is eliminated by equalizing the car wash action on the side surface of the vehicle body by the jet flow from the side nozzles 9 and 10. FIG. 3 shows the characteristics of the embodiment. Transition of the spray center position of the jet flow from the side nozzles 9 and 10 and discharge of the jet flow jetted from the side nozzles 9 and 10 are shown. It is explanatory drawing which showed the relationship with a pressure. As described above, in the side car wash, the rotation amount of the connecting shaft 30 is detected by the rotary encoder 34, and the control device 6 determines the side surface based on the rotation amount of the connecting shaft 30, that is, the rotation amounts of the drive wheels 27 and 31. The relative position of the nozzle relative to the vehicle body and the vehicle shape detection calculated based on the amount of rotation of the free wheel 4 detected by the rotary encoder 5 based on the height position data. Based on the vehicle height data at the current position obtained from the vehicle shape data detected by the means 51, the raising / lowering operation of the blowing center position from the side nozzles 9, 10 is repeated according to the vehicle height of the blowing portion. In addition, the motor 26 is driven and controlled. Meanwhile, the portal frame 1 and the vehicle body 54 continue to move relative to each other at a constant speed Va. Therefore, if the side nozzles 9 and 10 repeat the raising / lowering operation at a constant speed Vb as in the present embodiment, the spraying center position on the side surface of the vehicle body 54 follows a zigzag locus 55 as shown. It will be. And as a result of the rising or lowering distance of the side nozzles 9 and 10 changing in accordance with the change in the vehicle height of each part constituting the vehicle shape of the vehicle body 54, the spray pitch p between the spray center positions is also fluctuate. That is, as shown in the figure, the spray pitch p is small in the regions A and E where the vehicle height is low, large in the region C where the vehicle height is high, and intermediate in the regions B and D where the vehicle height is intermediate. It becomes size. Therefore, in areas A and E where the vehicle height is low, the spray density increases and the number of sprays per unit area also increases. Similarly, in the region C where the vehicle height is high, the spray density is small and the number of sprays per unit area is small, and in the regions B and D where the vehicle height is intermediate, those values are intermediate.
[0012]
The variation in the spray pitch p based on the above variation in the vehicle height causes processing unevenness. In this embodiment, paying attention to this point, as shown in the drawing, the discharge pressure from the side nozzles 9 and 10 is controlled to be low in the regions A and E where the vehicle height is low, and the pressure is high in the region C where the vehicle height is high. In the regions B and D where the vehicle height is an intermediate height, a technical means is adopted that compensates for variations in the spray pitch p and eliminates processing unevenness by controlling to medium pressure. That is, in the present embodiment, the discharge pressure from the side nozzles 9 and 10 is controlled according to the vehicle height of the spray portion so as to eliminate the variation in the spray density based on the spray pitch p. . Specifically, for example, by performing a spraying experiment on the side surface of the vehicle body 54 using a car wash machine of the corresponding model and setting the discharge pressure from the side nozzles 9 and 10 according to the vehicle height, processing unevenness Whether or not a good car wash action without any problem can be obtained is determined in advance as a correspondence between the vehicle height and the discharge pressure. In this case, the relative speed between the portal frame 1 and the vehicle body 54 is set to a predetermined speed Va used in the car wash process. Moreover, the raising / lowering speed of the side nozzles 9 and 10 is set to a predetermined speed Vb used in the car washing process. In this embodiment, the ascending / descending speed of the side nozzles 9 and 10 is set to a constant speed Vb, but the present invention can also be applied to a case where the ascending / descending speed is changed according to the vehicle height. With regard to the discharge pressure, if experimental data is obtained as the pump speed, the target discharge pressure can be controlled immediately by controlling the pump speed, which is effective in terms of control.
[0013]
Therefore, the control relating to the discharge pressure of the jet flow injected from the side nozzles 9 and 10 is performed by the relative relationship between the portal frame 1 and the vehicle body 54 used in the car washing process, which has been experimentally obtained in advance as described above. It is executed using the correspondence between the vehicle height and the discharge pressure or the number of rotations of the pump, which is necessary for obtaining a good car washing operation with no processing unevenness under the speed and the raising / lowering speed of the side nozzles 9 and 10. become. For example, the target rotational speed of the pump 46 corresponding to the vehicle height at the current position of the side nozzles 9 and 10 obtained by the above-described method is obtained from the correspondence between the vehicle height and the rotational speed of the pump. If the rotational speed control is executed, a good car washing action without processing unevenness can be obtained accurately. As for the correspondence relationship between the vehicle height and the discharge pressure or the rotation speed of the pump, the vehicle height and the discharge pressure or the rotation speed of the pump may be directly associated with each other, or as shown in FIG. The areas A to E may be set accordingly, and these areas may correspond to the discharge pressure or the rotation speed of the pump. Needless to say, the number of areas to be classified according to the vehicle height can be set freely.
[0014]
【The invention's effect】
According to the present invention, the longitudinal direction of the vehicle body based on the variation in the vehicle height caused by the control of the discharge state of the car wash medium according to the vehicle height of the sprayed portion, when the ascending / descending speed of the side nozzle is made constant. It is possible to equalize the car-washing effect by complementing the influence of fluctuations in the spray pitch. Therefore, it is possible to obtain a good car washing action with less processing unevenness while adopting the control of raising and lowering the side nozzle at a constant speed with a simple control structure. In addition, since the speed of the relative movement in the longitudinal direction of the vehicle body is almost constant, it does not affect the car wash process for the upper surface of the car body that is performed in parallel with the side car wash process. Good finish with little unevenness is possible. In addition, if it is applied to the case where the raising / lowering speed of the side nozzle is changed according to the vehicle height, it is also effective in eliminating processing unevenness due to variation in processing time per unit area.
[Brief description of the drawings]
FIG. 1 is a schematic front view showing a main part of a drive mechanism related to a cleaning nozzle installed inside a portal frame according to an embodiment of the present invention.
FIG. 2 is a schematic side view of the embodiment.
FIG. 3 is an explanatory diagram showing the relationship between the transition of the spraying center position of the jet flow from the side nozzles and the discharge pressure of the jet flow jetted from the side nozzles.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Portal frame, 2 ... Motor, 3 ... Drive wheel, 4 ... Free wheel, 5 ... Rotary encoder, 6 ... Control apparatus, 7 ... Inverter, 8 ... Nozzle for upper surface, 9, 10 ... Nozzle for side surface, 11 ... Support frame, 12 ... motor, 13 ... endless transmission band, 14, 15 ... motor, 16 ... intermediate wheel, 17 ... driving wheel, 18 ... driven wheel, 19 ... endless transmission band, 20 ... connecting shaft, 21 ... drive Wheel, 22 ... driven wheel, 23 ... endless transmission band, 24 ... rotary encoder, 25 ... inverter, 26 ... motor, 27 ... driving wheel, 28 ... driven wheel, 29 ... endless transmission band, 30 ... connecting shaft, 31 DESCRIPTION OF SYMBOLS ... Drive wheel, 32 ... Drive wheel, 33 ... Endless transmission belt, 34 ... Rotary encoder, 35 ... Supply pipe, 36 ... Tank, 37 ... Pump, 38 ... Partition wall, 39 ... Washing water tank, 40 ... Detergent tank, 41 42 ... Switching valve, 43 ... Motor 44 ... Inverter, 45 ... Supply pipe, 46 ... Pump, 47, 48 ... Switching valve, 49 ... Motor, 50 ... Inverter, 51 ... Vehicle shape detection means, 52 ... Upper drying nozzle, 53 ... Side drying nozzle, 54 ... Body, 55 ... locus of spray center position

Claims (2)

The vehicle body side relatively moving substantially at a constant speed in the longitudinal direction, Gate spraying position to perform wash by blowing a wash medium from the side nozzle configured to repeat the temperature descending within the vehicle height In the type car wash machine, the door-type car wash machine is characterized by equalizing the car wash action by controlling the discharge state of the car wash medium sprayed from the side nozzles according to the height of the sprayed portion . The gate-type car wash machine according to claim 1, wherein a discharge pressure of a car wash medium sprayed from the side nozzle is controlled to be higher as a vehicle height of the sprayed portion becomes higher.

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