JP3834506B2 - Waste oil treatment equipment for vehicle lift - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a waste oil treatment apparatus for a vehicle lift that easily discharges waste oil such as engine oil from a vehicle that is being lifted up during maintenance work of an automobile.
[0002]
[Prior art]
Conventionally, a waste oil receiver called a drain cart is set under the lifted vehicle, and the vehicle is stopped at a position where the oil pan position of the vehicle is just above the drain cart. I was doing it.
[0003]
In addition, an example is provided in which a rail is provided on a support base of the lift device, and a waste oil receiver is engaged with the rail so as to be movable in the front-rear direction so that the vehicle stop position during waste oil draining operation is allowed to be long in the front-rear direction. Is known (Japanese Patent Application Laid-Open No. 10-138883).
[0004]
[Problems to be solved by the invention]
However, the method of engaging the waste oil receiver movably in the front-rear direction along the support base has a discharge pipe for discharging the waste oil protruding below the waste oil receiver. If the lift is inadvertently lowered after work, the discharge pipe will not properly engage with the opening of the waste oil pipe below, and waste oil will be discharged out of the waste oil pipe, or it will collide with protrusions on the floor. There is a problem that the discharge pipe may be damaged.
[0005]
An object of the present invention is to provide a vehicle lift waste oil treatment apparatus that solves the above-described problems and does not discharge waste oil outside the waste oil pipe or damage the discharge pipe.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a vehicle lift waste oil treatment apparatus in which a rail is provided on a support base of a vehicle for a vehicle lift and a waste oil receiver is engaged with the rail so as to be movable in the front-rear direction. A position sensor operated by the waste oil receiver is provided at a predetermined position of the receiving stand.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
A first embodiment of the present invention will be described with reference to FIGS.
[0008]
FIG. 1 shows a use state of a waste oil treatment apparatus for a vehicle lift according to the present invention, wherein 1 is a waste oil treatment apparatus and 2 is a pantograph type lift apparatus. FIG. 2 shows a perspective view of the lift device 2.
[0009]
The lift device 2 has a pair of support bases 2a and 2a for supporting the vehicle at the top, and a rail 2b having a U-shaped cross section is provided along the inner edge of each support base 2a.
[0010]
3 is a waste oil receiver, which has a wide opening at the top and two wheels 3b and 3b supported on both sides, and the wheel 3b has a U-shaped cross section. The waste oil receiver 3 is formed to be movable in the front-rear direction of the support base 2a by engaging with the rail 2b.
[0011]
A discharge pipe 3a for discharging the waste oil protrudes from a lower end portion of the waste oil receiver 3, and a discharge valve 4 is provided in the discharge pipe 3a.
[0012]
As shown in FIG. 4, the discharge valve 4 has a valve body 4a and a coil spring 4c for urging the valve body 4a toward the valve seat 4b. The valve body 4a is normally seated on the valve seat 4b. Thus, the oil in the waste oil receiver 3 is prevented from flowing out from the discharge pipe 3a.
[0013]
A position sensor 5 which is a feature of the present invention is shown in FIG.
[0014]
The position sensor 5 includes a high frequency proximity switch 5a and a metal plate 5b. When the metal plate 5b is near the head of the proximity switch 5a, the position sensor 5 detects this and emits a signal.
[0015]
The metal plate 5b is made of an iron flat plate, and is fixed to a lower portion of the side portion of the waste oil receiver 3 so as to protrude sideways.
[0016]
The proximity switch 5a is fixed to the lower surface of the support base 2a with the head facing upward, and when the waste oil receiver 3 is moved along the rail 2b, The portion is formed so as to pass the immediate vicinity of the top of the head of the proximity switch 5a. Further, when the proximity switch 5a and the metal plate 5b are just overlapped, the discharge pipe 3a of the waste oil receiver 3 is disposed just above the opening 6a of the oil discharge pipe 6 in the pit (see FIG. 1).
[0017]
The oil drain pipe 6 has a push rod 6b standing at the center of the opening 6a (see FIG. 4).
[0018]
The push rod 6b is arranged so as to collide with the valve body 4a of the discharge valve 4 in the discharge pipe 3a when the discharge pipe 3a descends into the opening 6a, and avoids an impact at the time of the collision. Therefore, the push bar 6b has a buffer means and is held in the opening 6a.
[0019]
In FIG. 1, 7 is a waste oil tank, and 8 is a control unit of the lift device. The control unit 8 has alarm means (not shown) that is activated by a signal from the position sensor 5.
[0020]
Next, the operation and effects of the vehicle lift waste oil treatment apparatus of the present embodiment will be described.
[0021]
In a state shown in FIG. 1, after the waste oil of the vehicle A is received by the waste oil receiver 3, it is necessary to discharge the waste oil to the waste oil tank 7.
[0022]
For this reason, after the waste oil receiver 3 is moved along the support base 2a so that the discharge pipe 3a is just above the opening 6a of the oil drain pipe 6 in the pit, the support base 2a of the lift device 2 is used. Descent.
[0023]
Thus, the support base 2a is lowered to the lowest position, the discharge pipe 3a is inserted into the opening 6a, and the push rod 6b in the opening 6a pushes up the valve body 4a of the discharge valve 4 in the discharge pipe 3a. The waste oil in the waste oil receiver 3 is discharged to a waste oil tank 7.
[0024]
If the discharge pipe 3a is not directly above the opening 6a, the lift device 2 cannot be lowered.
[0025]
This is because the position sensor 5 acts on the control unit 8 of the lift device 2 and prohibits the lift device 2 from being lowered.
[0026]
That is, when the metal plate 5b is not near the head of the proximity switch 5a, even if an operator presses the lowering button of the lift device, the control unit 8 determines whether the lift device 2 is in response to a signal from the proximity switch 5a. Operates to prohibit descent and automatically alerts workers to alert them. Alternatively, the control unit 8 may only issue an alarm even when the lift device 2 is lowered, or may prohibit the lowering of the lift device 2 so as not to issue an alarm.
[0027]
Further, if the metal plate 5b is placed on the head of the proximity switch 5a, the prohibition of lowering of the control unit 8 is released, and the lifting device 2 can be lowered freely.
[0028]
Thus, the lift device 2 is not inadvertently lowered and the waste oil is not discharged out of the opening 6a of the oil discharge pipe 6 or the discharge pipe 3b is not damaged.
[0029]
In the present embodiment, the high frequency proximity switch 5a is used for the position sensor 5, but this may be a capacitive proximity switch or a magnetic proximity switch using a reed switch, or An electric or pneumatic limit switch may be used.
[0030]
In the present embodiment, the pantograph lift device 2 is used as the vehicle lift device, but this may be a lift device that lifts and lowers a pair of support bases directly by a hydraulic cylinder.
[0031]
A second embodiment of the present invention will be described with reference to FIG.
[0032]
Also in the second embodiment, as in the first embodiment, a metal plate 5b fixed to protrude downward to the lower side of the side portion of the waste oil receiver 3, and a support base The position sensor 5 includes a proximity switch 5a fixed to the lower surface portion of 2a.
[0033]
However, in the second embodiment, unlike the first embodiment, the discharge valve 3 is not provided in the discharge pipe 3a at the lower end of the waste oil receiver 3, and instead the discharge pipe 3a is directly connected. To the hose 9.
[0034]
The hose 9 has a flexible and expandable / contractible bellows shape, and the lower end of the hose 9 is connected to an auxiliary tank 10 installed at the bottom of the pit B, and waste oil is passed through the auxiliary tank 10. It is connected to the tank 7.
[0035]
The pit B is formed in a small opening that can accommodate the waste oil receiver 3.
[0036]
Next, the operation and effect of the vehicle lift waste oil treatment apparatus of the present embodiment will be described.
[0037]
When the vehicle A is lifted up and the waste oil is received by the waste oil receiver 3, the received waste oil immediately flows to the auxiliary tank 10 through the hose 9, and is sent to the waste oil tank 7 by the pump.
[0038]
When lowering the lift device 2, first, the waste oil receiver 3 is moved right above the pit B, and then the support base 2 a is lowered.
[0039]
If the waste oil receiver 3 is not directly above the pit B, the control device 8 operates so as to inhibit the lift device 2 from being lowered by a signal from the proximity switch 5a.
[0040]
Thus, since the waste oil receiver 3 always enters the pit B when the lift device 2 is lowered, the discharge pipe 3a at the lower end of the waste oil receiver 3 does not hit the floor surface and is not damaged. The pit B is formed in a deep hole, but the lower surface of the lift device 2 is also formed to be slightly lower than the surrounding floor surface. Since the opening of the pit B is small, there is no danger of falling into the pit B.
[0041]
【The invention's effect】
As described above, according to the present invention, inadvertent descent of the lift device in the waste oil treatment device for vehicle lift is prevented, and the discharge port at the lower end of the waste oil receiver is damaged or the waste oil is discharged out of the oil drain pipe. It has the effect of eliminating the need to do.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram of a first embodiment of the present invention.
FIG. 2 is a perspective view of a main part.
FIG. 3 is a side view of the main part.
FIG. 4 is a partial cross-sectional view of a main part.
FIG. 5 is an explanatory diagram of a second embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Waste oil processing apparatus 2 Lift apparatus 2a Support stand 2b Rail 3 Waste oil receiver 5 Proximity switch 8 Control means (control part)

Claims (4)

In a vehicle lift waste oil treatment apparatus in which a rail is provided on a vehicle support base of a vehicle lift, and a waste oil receiver is movably engaged with the rail in the front-rear direction, the waste oil receiver is placed at a predetermined position of the support base. An oil removal processing apparatus for a vehicle lift, which is provided with an operating position sensor. 2. The vehicle lift waste oil treatment apparatus according to claim 1, wherein a control unit that allows the support base to be lowered only when an operation signal is input from the position sensor is connected to the position sensor. 3. 3. The vehicle lift according to claim 1 or 2, wherein an alarm means for issuing an alarm when the operation signal is not input from the position sensor and the support table is lowered is connected to the position sensor. Waste oil treatment equipment. The waste oil treatment apparatus for a vehicle lift according to any one of claims 1 to 3, wherein the position sensor includes a proximity switch or an electric or pneumatic limit switch.

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