JP2509372Y2 - Vehicle maintenance lift - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle maintenance lift, and more particularly, to an improvement of a vehicle maintenance lift that vertically moves up and down by supporting both sides of a vehicle body lower surface of a four-wheel vehicle with table plates.

[0002]

2. Description of the Related Art Generally, when carrying out undercarriage maintenance of a four-wheeled vehicle or cleaning the lower portion, the maintenance vehicle is supported by the table plates of a plate type lift on both sides of the vehicle body and lifted up horizontally to perform a predetermined maintenance work. Is what is done. The table plate in the plate-type lift is generally formed by a single rectangular plate that fits between the front and rear wheels of the vehicle. Correspondingly, the table plate of the plate-type lift can be expanded and contracted in the longitudinal direction.
It is proposed as 79392.

[0003]

The expansion and contraction movement of the table board in the above invention is to pull out or push in and out by human power (hand). Therefore, when the table board is fitted to the lower portion of the vehicle, Since the user bends over and puts his / her hand in a narrow gap to perform the above-mentioned work, there is a problem that it is difficult to work and is easily fatigued, and a large amount of time is spent on the expansion / contraction work. Further, when the table plate is extended, the sliding table plate must be carefully operated so as not to hit the tire, the mudguard, etc., and the workability is poor.

The present invention has been made in view of the problems of the above-mentioned conventional techniques, and the object of the present invention is to easily extend and retract while standing without bending the waist. Moreover, it is to provide a lift that automatically stops by preventing damage due to a collision during extension.

[0005]

The technical means taken by the present invention to achieve the above-mentioned object is that a table plate for supporting a lower surface of a vehicle body is mounted on an upper part of a lift body which can be vertically moved up and down. In the vehicle maintenance lift provided, the table plate is composed of a table plate body and a slidable auxiliary table plate provided on the upper surface of the table plate body, and the auxiliary table plate is provided between the two. It is characterized in that an expanding / contracting mechanism for sliding is provided, a position detecting sensor is attached to the tip of the auxiliary table plate, and the corresponding expanding / contracting mechanism is automatically stopped by the output signal of the sensor.

The form of the above vehicle maintenance lift is as follows:
It is provided with at least a table plate for horizontally mounting a vehicle, and can be used for a pantograph lift, a one-column lift, a two-column lift, a four-column lift, a pole lift and the like. Further, the expansion / contraction mechanism may be an air-hydro cylinder type, a hydraulic cylinder type, a motor driven screw type, or the like.

The position detecting sensor attached to the tip of the sliding auxiliary table plate may be either a contact type or a non-contact type. As the contact type, a contact plate that slides by receiving an external force and its contact plate are used. Examples include a mechanism configured by combining with a switch that operates by movement, a touch switch type, and the like, and examples of the non-contact type include a photoelectric tube system and a proximity switch.

[0008]

According to the above-mentioned means, the front and rear auxiliary table plates provided on the upper surface of the table plate body are independently slidable in the front and rear direction by the expansion and contraction mechanism operated by the switch ON, and the tip of the auxiliary table plate is moved. The position detection sensor attached to the part detects that the tire or mudguard touches the tire or approaches the tire or mudguard, and outputs a signal. It will automatically stop at a position that matches the lift point of the vehicle.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to a buried lift shown in the drawings. In the figure, 1 is a pit formed on a floor surface 1 ', and a pantograph type lift main body 2 is housed in the pit 1. A table plate 3 is installed horizontally above the lift body 2. Since the lift main body 2 causes the table plates 3 to contact the lower portions on both sides of the vehicle,
Two pits 1 in which the lift main body 2 is installed are formed at predetermined intervals.

The lift main body 2 installed in the pit 1 is formed by vertically connecting two well-known X-shaped links 4, and a fixed frame 5 of the lift main body 2 fixed to the bottom of the pit 1. The base of the hydraulic cylinder 6 is movably attached to the side, and the tip of the rod 6'of the hydraulic cylinder 6 is connected to the upper X-shaped link 4, and the lift body 2 is vertically expanded and contracted by the operation of the hydraulic cylinder 6. Is configured.

The table plate 3 provided on the upper part of the lift body 2 includes a table plate body 7 and front and rear auxiliary table plates 8 and 9 mounted on the table plate body 7 so as to be slidable in the front-rear direction. A telescopic mechanism 10 for sliding the auxiliary table plates 8 and 9 in the front-rear direction is arranged between the table plate body 7 and the auxiliary table plates 8 and 9. The table plate body 7 is formed in a flat rectangular shape, and the upper portion of the X-shaped link 4 of the lift body 2 is coupled to the lower surface of the table plate body 7 via a bracket or the like, and the lower side of the table plate body 7 is connected. An illumination lamp 11 is attached to the side surface of the.

The auxiliary table plates 8 and 9 provided on the table plate body 7 are formed to have a size of about half of the entire length of the table plate body 7 in the longitudinal direction. The three sides except the facing side are bent downward at right angles to surround the periphery of the table plate body 7, and project outward from the front and rear ends of the table plate body 7 in the auxiliary table plates 8 and 9. Stretching mechanism for the part
The rod ends of the hydraulic cylinders 12 and 13 that form part 10 are connected, the position detection sensors 14 and 15 are mounted outward, and the rubber plates 16 are fixed to the upper surfaces of the auxiliary table plates 8 and 9. There is.

The telescopic mechanism 10 is composed of an air-hydro cylinder that operates by replacing air pressure with hydraulic pressure, and its construction is such that air pressure is supplied to the hydraulic cylinders 12 and 13, the oil tanks 17 and 18, and the oil tanks 17 and 18. The air circuit is provided with an electromagnetic pilot valve 19 to control the supply direction of the air pressure. That is, the hydraulic cylinders 12 and 13 are arranged and fixed back to back along the longitudinal direction at the central position of the lower surface of the table plate body 7, and oil tanks are provided on both left and right sides sandwiching the hydraulic cylinder 12.
17,18 are fixed horizontally, the air pressure supply pipe 20 is connected to one of the oil tanks 17,18, and the oil outlet side of the oil tanks 17,18 is connected to the extrusion side port of the hydraulic cylinders 12,13. At the same time, a pneumatic pressure supply pipe 21 is connected to the return side ports of the hydraulic cylinders 12, 13. The opening / closing of the air circuit is controlled by an output signal accompanying the detection of the position detection sensors 14 and 15.

The position detection sensors 14 and 15 attached to the auxiliary table plates 8 and 9 are composed of a micro switch 22 and a contact plate 23 for transmitting an operating pressure to the micro switch 22, and the contact plate 23 is an auxiliary table plate. 8 and 9 are mounted so as to slide in the longitudinal direction, a micro switch 22 is installed on the rear side of the contact plate 23, and the contact plate 23 comes into contact with a tire, a mudguard, or the like to move. The microswitch 22 is activated. The contact plate 23 is urged outward by a spring 24 so that the micro switch 22 is not always operated.

The vehicle maintenance lift constructed as described above is
After the vehicle is stopped at the lift position, the remote control switch and the control panel are operated to extend the lift main body 2 and lift the upper table plate 3 to a position close to the lower portion of the vehicle body of the vehicle A to be lifted up. Then, when the operation switch of the front and rear auxiliary table plates 8 and 9 on the table plate 3 is turned on by operating the remote control switch or the control panel, the auxiliary tables 8 and 9 are expanded and contracted.
By the action of each slides outward. When the auxiliary tables 8 and 9 slide and the contact plate 23 attached to the tip of the tables 8 and 9 comes into contact with the tire or the mudguard 25 of the vehicle A, the contact plate 23 moves and the microswitch. 22 is turned on. Expansion / contraction mechanism that slides the auxiliary table according to the output signal when the micro switch 22 is turned on.
10 is controlled and the auxiliary table board is stopped immediately.

Although the above-described embodiments have described the form of the buried lift, the lift of the present invention is not limited to the form of the embodiment, and includes a table plate known as a vehicle maintenance lift today. It goes without saying that the so-called plate-type one-column lift, plate-type two-column lift, plate-type four-column lift, plate-type pole lift, two-stage plate-type lift and the like are also included.

[0017]

Since the vehicle maintenance lift of the present invention is constructed as described above, sliding of the auxiliary table plate constituting the table plate is automatically stopped by the operation of the position detection sensor, and the vehicle lift is lifted. You can easily adjust to the points. Moreover, the above-mentioned work can be performed in a standing posture without having to take a very cramped posture of bending the waist, so that the work can be performed very easily and fatigue can be reduced. Further, even if the position detection sensor for controlling the expansion and contraction of the auxiliary table plate is of a contact type, it works with a very small contact pressure (external force), so there is no danger of damaging the tire or the mudguard.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional front view showing an embodiment of the present invention lift.

FIG. 2 is a plan view of FIG.

FIG. 3 is a vertical sectional front view of the table plate in an extended state.

FIG. 4 is a partially cutaway plan view in the state of FIG.

FIG. 5 is a piping circuit diagram of a hydraulic cylinder and air pressure.

[Explanation of symbols]

 2 ... Lift main body 3 ... Table plate 7 ... Table plate main body 8, 9 ... Auxiliary table plate 10 ... Expansion / contraction mechanism 14, 15 ... Position detection sensor

Claims (1)

(57) [Scope of utility model registration request] 1. A lift for vehicle maintenance, wherein a table plate for supporting a lower surface of a vehicle body of a vehicle is provided on an upper part of a lift body which can be vertically moved up and down, the table plate being a table plate body, and the table plate body. It is composed of a slidable auxiliary table plate provided on the upper surface of the table, and an expansion / contraction mechanism for sliding the auxiliary table plate is provided between the two, and a position detection sensor is provided at the tip of the auxiliary table plate. A vehicle maintenance lift characterized by being mounted and automatically stopping a corresponding expansion / contraction mechanism according to the output signal of the sensor.