JP3834136B2 - Vehicle lift positioning device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vehicle lift positioning apparatus suitable for inspection and maintenance of large vehicles such as automobiles, particularly trucks.
[0002]
[Prior art]
Conventionally, as a lift for a large vehicle, a type in which a front lift is in a fixed position and a rear lift moves in the vehicle length direction is known, and an operator uses a rear wheel of the vehicle to position the rear lift. While observing the position, the rear lift was moved and positioned by visual measurement.
[0003]
[Problems to be solved by the invention]
Thus, conventionally, since the operator has positioned the rear lift by visual observation while looking at the rear wheel position of the vehicle, there is a problem that it takes time and is difficult to accurately position the rear lift.
[0004]
SUMMARY OF THE INVENTION An object of the present invention is to provide a vehicle lift positioning device that solves these problems and can easily and accurately position a moving lift.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a vehicle lift device comprising a fixed lift and a moving lift. The first invention relates to a wheel detection sensor for detecting a wheel of the vehicle and a detection signal from the wheel detection sensor. Control means for controlling the movement lift to a predetermined position, and the wheel detection sensor is provided in the movement lift, and the control means moves the movement lift so that the wheel detection sensor detects the wheel first. A control program for moving and stopping the moving lift by a predetermined distance from the detection position of the vehicle, and the second invention includes a wheel detection sensor for detecting a wheel of the vehicle, and the wheel detection sensor. Control means for controlling the moving lift to a predetermined position in response to the detection signal of, and providing the wheel detection sensor to the moving lift, The control means moves the moving lift to the final detection position where the detection of the wheel ends through the initial detection position where the wheel detection sensor detects the wheel, and the distance from the initial detection position to the final detection position. And a control program for returning the moving lift from the final detection position by half the distance of the vehicle. Further, the third invention is a wheel detection sensor for detecting a vehicle wheel, and the wheel detection sensor. Control means for controlling the moving lift to a predetermined position in accordance with a detection signal from the vehicle and a display device, and a wheel detection sensor for detecting a peripheral portion of a wheel of the vehicle on the fixed lift with an interval in the front-rear direction. The control means displays a vehicle forward indication on the display device when the front wheel detection sensor does not detect the wheel and the rear wheel detection sensor detects the wheel. When the front wheel detection sensor detects the wheel and the rear wheel detection sensor does not detect the wheel, the display device instructs the vehicle to move backward, and both the front and rear wheel detection sensors detect the wheel. When detected, the display device displays the vehicle at a predetermined position.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
A first embodiment of the present invention will be described with reference to the drawings.
[0007]
FIG. 1 is a general view of a lift device for a vehicle, 1 is a pit formed on the floor, 2 is a fixed lift, 3 is a moving lift, and the fixed lift 2 is fixed to the front end in the pit 1. Further, as shown in FIG. 3, the moving lift 3 has wheels 3d pivotally supported on both sides thereof, and these wheels 3d roll in a groove 1a provided in the upper part of the inner side surface of the pit 1 to move the moving lift 3. It moved to the front and rear direction of pit 1. A cover 4 that covers the opening of the pit 1 is provided along with this movement.
[0008]
In addition, the white line for determining the below-mentioned front-wheel position is provided in the floor surface of the both sides of the said fixed lift 2, or a recessed part is provided, and 5 shows an operation part.
[0009]
FIG. 2 is a longitudinal sectional view of the pit 1, 2a and 3a are hydraulic cylinders of the lifts 2 and 3, 2b and 3b are vehicle bearings of the lifts 2 and 3, 2c and 3c are the lift 2, 3 shows a hydraulic drive unit 3.
[0010]
Further, the wheel detection sensor S ₁ of the rear wheels consisting of ultrasound sensors is provided on the side of said supporting Seung receiving fixture 3b.
[0011]
The drive unit of the mobile lift 3 6, 6a is a first sprocket connected to the drive motor M _1, 6b is a second sprocket which is connected to the position sensor S ₂ consisting a rotary encoder for detecting the position of the mobile lift 3 The first sprocket 6a and the second sprocket 6b are meshed with a chain 6c indicated by a chain line extending between the front and rear in the pit 1.
[0012]
Reference numeral 7 denotes an electric wire for a power source and a signal to the moving lift 3, and 8 denotes a wire for hanging the electric wire 7 so as to be movable.
[0013]
FIG. 4 is a system configuration diagram according to the first embodiment. Reference numeral 9 denotes arithmetic control means, and 10 denotes a storage device.
[0014]
Next, the operation of the first embodiment of the present invention will be described.
[0015]
Initially, the moving lift 3 is located at the front part closest to the fixed lift 2 in FIG. 1, and when moving, it moves several meters according to the rear wheel position of the vehicle, and both lifts 2, 3 are lowered. Therefore, only the bearing receivers 2b and 3b protrude from the floor surface.
[0016]
First, a vehicle for inspection and maintenance slowly moves forward from the rear of the pit 1 and stops the front wheel at a position where a white line is drawn according to the guidance of the guide. It is input to the control means 9 that the front wheel has stopped at a predetermined position for lifting the fixed lift 2.
[0017]
Next, the control means 9 drives the drive motor M ₁ provided in the drive unit 6 to move the moving lift 3 backward from the front part of the pit 1, and the moving position is also provided in the drive unit 6. A wheel sensor S ₁ provided on the side of the vehicle support 3b during the movement is detected by a position sensor S ₂ comprising a rotary encoder and input to the control means 9 as shown in FIG. An ultrasonic wave is emitted and a reflected wave is received.
[0018]
5 3 A shows the trajectory of the wheel detection sensor S ₁ that emit ultrasound while moving in the direction of the arrow from left to right by changing the 90 ° direction, a plurality of white spots left without being reflected radiated into, black dots indicate that the ultrasonic wave is reflected at the position of the tire, the first control program controlling means 9 is incorporated from the initial position a of the wheel detection sensor S ₁ that detects the tire When a short predetermined distance indicated by arrow B to move the moving lifts stops driving the motor M _1, a predetermined position for lifting of the mobile lift 3.
[0019]
Here, the diameter of the wheel is different between the large-sized vehicle and the medium-sized vehicle, but if the difference in diameter is 10 cm, the difference in the dimension of the wheel detection sensor S ₁ across the wheel is about 3 cm. If the predetermined distance shown by the short arrow B is set to about 1 cm less than half the size of a large vehicle, and the program is set, the error will be about 0.5 cm for medium-sized vehicles, and can easily be kept within the liftable range. .
[0020]
This first control program can be stopped at a predetermined position without changing the moving speed of the moving lift 3, and time is not wasted.
[0021]
Next, another second control program will be described with reference to FIG.
[0022]
6 3 A shows the trajectory of the wheel detection sensor S ₁ that emit ultrasound while moving in the direction of the arrow from left to right by changing the 90 ° direction, a plurality of white spots left without being reflected A plurality of black dots indicate that the ultrasonic wave is reflected at the position of the tire, and when it moves further to the right, it moves away from the tire and comes to a position indicated by one white spot. Control means 9 at the location of the white point by a second control program moves the moving lift 3 to the left by reversing the drive motor M _1, and calculates the moving length indicated by black dots, half of its movement length When the moving lift 3 is returned to and stopped at the position indicated by the short arrow C, the predetermined position for lifting the moving lift 3 is reached.
[0023]
Although the wheel detection method based on the second control program takes some time to move, there is an advantage that the moving lift 3 can be stopped at an accurate position even if the tire diameter is greatly different.
[0024]
Finally, the fixed lift 2 and the movable lift 3 are raised to perform vehicle inspection and maintenance work.
[0025]
The work that has been visually positioned in this way is automated and simplified and becomes accurate.
[0026]
The reason why the ultrasonic wave is used for the wheel detection sensor S _{1 is} that it is easily reflected from the tire, and an optical sensor having a similar function may be used. When fine adjustment is necessary, manual operation may be switched as needed. Further, the lift having the fixed lift at the rear portion and the moving lift at the front portion can function in exactly the same manner.
[0027]
Next, a second embodiment will be described with reference to FIGS.
[0028]
The second embodiment is a wheel positioning device on the side of a fixed lift that does not depend on the guidance of the guide or a method of providing a recess on the floor surface.
[0029]
If the front wheel side is a fixed lift, as shown in FIG. 2, wheel detection sensors S ₃ and S ₄ are provided on both sides of a support base 2b of the fixed lift 2 with a gap therebetween.
[0030]
This distance is preferably closer to the size of the wheel crossing the detection sensors S ₃ and S _{4 because} accurate positioning can be achieved.
[0031]
FIG. 7 is a system configuration diagram of the second embodiment, wherein 9 is a control means, 11 is a display device, and the display device 11 informs the driver of the position of the wheel to move the vehicle forward, backward, and a predetermined position. Give instructions.
[0032]
Next, the operation of the second embodiment will be described with reference to FIGS.
[0033]
First, when the vehicle for inspection and maintenance is advanced from behind the pit 1 and stopped when the front wheel position is near the fixed lift 2, a wheel detection sensor S ₃ indicated by a black dot as shown in FIG. Detects a tire, and when the wheel detection sensor S ₄ indicated by a white dot is not detected, a forward arrow appears on the display device 11. So not detected as shown sensor S ₃ as shown in further advancing the vehicle (b) is by white dots, the sensor S ₄ is out arrows Whether retracted into the display device 11 to detect as indicated by black dots, the vehicle When the vehicle is slightly retracted, both the sensors S ₃ and S ₄ are detected as indicated by black dots as shown in FIG. 9, and OK is displayed on the display device 11, and the front wheel position can be stopped at a predetermined position of the fixed lift 2.
[0034]
The advantage of the wheel positioning device on the fixed lift side according to the second embodiment is that it is possible to save costs and secure safety in a maintenance shop.
[0035]
In other words, the method of drawing a white line requires an instructor, and the method of providing a recess on the floor surface can ensure positioning, but a malfunction or accident in which water or oil accumulates in the recess or a foot is taken in the recess. Can be eliminated.
[0036]
Further, a third embodiment will be described.
[0037]
The feature of the third embodiment is not only the use of the wheel detection sensors S ₁ , S ₃ or S ₄ shown in FIG. 2 for wheel position detection as in the first and second embodiments, but also If the receiving part of the sensor S ₁ , S ₃ or S ₄ is connected to the control system of the hydraulic cylinders 2a and 3a of the lifts 2 and 3, these sensors S ₁ , S ₃ and S ₄ can be used for raising and lowering a normal lift. It can also be used as a receiving unit for remote operation during lifting work.
[0038]
【The invention's effect】
As described above, according to the present invention, the positioning work of the moving lift is automated and simplified, and the positioning can be performed accurately.
[0038]
Further, the relative position of the wheel with respect to the fixed lift can be automatically displayed, and further, not only the wheel position detection but also the remote operation can be performed, which has an advantageous effect in improving the operability.
[Brief description of the drawings]
FIG. 1 is an overall perspective view of a first embodiment of the present invention.
FIG. 2 is a front sectional view thereof.
FIG. 3 is a cross-sectional view.
FIG. 4 is a system configuration diagram.
FIG. 5 is an explanatory diagram of a locus of a rear wheel detection sensor according to a first control program.
FIG. 6 is an explanatory diagram of a locus of a rear wheel detection sensor according to a second control program.
FIG. 7 is a system configuration diagram of the second embodiment;
FIG. 8 is an explanatory diagram of a forward / backward operation display according to the second embodiment.
FIG. 9 is an explanatory diagram of an operation display at the predetermined position.
[Explanation of symbols]
1 Pit 2 Fixed lift 3 Moving lift
3b Vehicle support 9 Control means S ₁ Wheel detection sensor S ₂ Position sensor

Claims (3)

In the fixed lift and lifting device for moving Rif DOO or Ranaru vehicle, a wheel detection sensor for detecting a wheel of the vehicle, and control means for controlling movement of the mobile lift at a predetermined position in accordance with detection signals from the wheel detection sensor The wheel lift sensor is provided in the moving lift, and the control means moves the moving lift so that the wheel lift sensor moves the moving lift by a predetermined distance from the first detection position where the wheel detecting sensor detects the wheel. A vehicle lift positioning device comprising a control program for stopping the vehicle. In a vehicle lift device comprising a fixed lift and a moving lift, the vehicle includes a wheel detection sensor for detecting a vehicle wheel, and a control means for controlling the moving lift to a predetermined position in accordance with a detection signal from the wheel detection sensor. The wheel detection sensor is provided on the moving lift, and the control means moves the moving lift to the final detection position where the detection of the wheel is finished through the first detection position where the wheel detection sensor detects the wheel. the first detecting position from the last detected position to half the distance the mobile lifting the positioning device of the car dual lift you characterized in that it comprises a control program to return from the last detected position of the distance. In a vehicle lift device comprising a fixed lift and a moving lift, a wheel detection sensor for detecting a vehicle wheel, a control means for controlling the moving lift to a predetermined position in accordance with a detection signal from the wheel detection sensor, and a display device A wheel detection sensor for detecting a peripheral edge of a vehicle wheel is provided at the front and rear of the fixed lift, and the control means detects the rear wheel without detecting the wheel by the front wheel detection sensor. When the sensor detects the wheel, the display device displays the forward movement of the vehicle, the front wheel detection sensor detects the wheel, and the rear wheel detection sensor does not detect the wheel. to the display of the backward movement of the vehicle on a display device, said that the vehicle display device causes the display is a predetermined position when the further front and rear wheels detected sensor are both detected the wheel Positioning device shall be the symptom car amphibious lift.

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