JP2001089089A - Lift device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To smoothly elevate/lower a lift plate and an arm holder in a lift device for vehicle in which the lift plate and the arm holder arranged outside the lift plate and pivotably supported with a support arm on a root part are connected to each other in an elevating/lowering manner. SOLUTION: Facing surfaces of a lift plate 2 and an arm holder 3 are brought close to each other, upper and lower support plates 2a and 2b are projected from intermediate portions of the facing surfaces of the lift plate 2 to connect and fix one perpendicular shaft 10 between the support plates 2a and 2b, a recessed part 3a with the support plates 2a and 2b interposed therein is formed in the arm holder 3, and a guide bearing 11 is provided for the perpendicular shaft 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle lift device of a type in which a lift plate moves up and down from a pit provided on a floor surface in a vehicle maintenance shop or the like.

[0002]

2. Description of the Related Art A conventional vehicle lift device of this type includes a lift plate and an arm holder disposed outside the lift plate and having a support arm pivotally supported at a root portion. The lift plate is lowered when not in use. When the arm holder is located below the lift plate and the support arm is stored below the upper surface of the lift plate, and when the lift plate is raised during use, the arm holder also rises and the support arm is A lift device is known which is rotatable on an upper surface and is connected between the lift plate and the arm holder by coupling means of a plurality of vertical shafts and guide bearings for guiding the vertical shafts so as to be able to move up and down. ing.

[0003]

According to the conventional lift device, the lift plate and the arm holder are connected to each other by means of a plurality of vertical shafts and guide bearings. Therefore, if all of the plurality of vertical axes are not provided exactly vertically, smooth lifting cannot be performed, and the vertical axis must be provided exactly vertically to secure this smooth lifting. However, there was a problem that it took time and effort in production.

[0004] It is an object of the present invention to solve these problems and to provide a vehicle lift device that can be easily manufactured.

[0005]

According to the present invention, there is provided a lift for a vehicle comprising a lift plate and an arm holder disposed outside the lift plate and having a support arm pivotally supported at a root portion. In the apparatus, the opposing surfaces of the lift plate and the arm holder are brought close to each other, and a vertical axis is provided on one of the lift plate and the arm holder, and a guide bearing for guiding the vertical axis so as to be able to move up and down is provided on the other. It is characterized by the following.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to the drawings.

FIGS. 1 and 2 are plan views of a vehicle lift device 1 according to the present embodiment.
A lift plate 2 provided in a pair of left and right pits P provided on the floor surface so as to be able to ascend and descend, and an arm holder 3 outside each lift plate 2 and capable of ascending and descending into the pit P, A pair of swing arms 4 pivotally attached to each of the arm holders 3;
A pair of lift plates 2 is formed in a twin lift device that moves up and down in synchronization.

FIG. 1 shows the lift plate 2, the arm holder 3, the swing arm 4, and the arm lock device 5.
FIG. 2 shows a state in which the swing arm 4 is lifted and extended, and is turned and mounted on the upper surface of the lift plate 2.

Here, the swing arm 4 is
a having an inner arm 4b passing through the inside of the inner arm 4a and a metal fitting 4c fixed to the tip of the inner arm 4b, and being pivotally attached to the arm holder 3 so as to be pivotable and extendable about a pivot 4d. I have.

Reference numeral 5 denotes an arm lock device. The arm lock device 5 has a function of allowing the swing arm 4 to turn or a function of setting a lock state in which the swing arm 4 cannot turn.

In FIG. 1, the upper surfaces of the lift table 2 and the arm holder 3 are substantially at the same height as the floor surface FL, whereas in FIG. 2, the lift table 2 and the arm holder 3 are raised above the floor surface. It shows a case in which it is in a state.

FIG. 3 is a sectional view taken along line XX of FIG. 1, and FIG. 4 is a sectional view taken along line YY of FIG.

The lift table 2 and the arm holder 3 are located close to each other on their opposing surfaces, and a curved upper support plate 2a is protruded at an intermediate portion of the lift table 2 and a vertical plate 2c is provided at the intermediate portion. A curved lower support plate 2b protrudes through the upper support plate 2a and the lower support plate 2b.
A single vertical shaft 10 is connected and fixed between the arms b, and a curved concave portion 3a is formed at an intermediate portion of the facing surface of the arm holder 3 so that the support plates 2a and 2b intervene with a gap therebetween. At the same time, a guide bearing 11 is provided on the arm holder 3 to guide the vertical shaft 10 up and down.

Numeral 6 denotes a hydraulic cylinder vertically provided at the bottom of the pit P, which has a piston (not shown) which slides in the hydraulic cylinder 6 in an airtight manner, and which is erected on the piston. The upper end of the plunger 6a is connected and fixed to the lower surface of the lift plate 2a.

Numeral 7 denotes a small hydraulic cylinder. The hydraulic cylinder 7 having two front and rear parts forms an elevating device for the arm holder 3.

That is, plungers 7a are erected on pistons (not shown) which airtightly slide in the respective fluid pressure cylinders 7, and the upper ends of the plungers 7a are provided on the lower surface of the arm holder 3. The arm holder 3 is formed so as to be brought into contact with the arm holder 3.

When the plunger 7a rises by a predetermined stroke when the lift plate 2 is at the floor level, the arm holder 3 rises by a predetermined stroke and the lower surface of the arm holder 3 is lifted. It reaches the height of the upper surface of the plate 2.

When the lift plate 2 is raised by the hydraulic cylinder 6, the arm holder 3 is also raised together with the lift plate 2 and detaches from the plunger 7a.

Here, the arm holder 3 is mounted on the vertical shaft 1.
0 and a guide bearing 11 connected to the lift plate 2 and detachably mounted on the hydraulic cylinder 7.

That is, the lift plate 2 and the arm holder 3
Is connected only to one vertical shaft 10 and its guide bearing 11, since the opposing surfaces of the left and right lift plates 2 and the arm holder 3 are close to each other, a certain range Can be smoothly moved up and down.

A cover 8 is provided in the pit P so as to be movable up and down. The cover 8 is moved up and down by a plurality of hydraulic cylinders 9.

That is, when the lift plate 2 rises above the pits P, the cover 8 rises to the floor level to cover the openings of the pits P.

Next, the operation of the vehicle lift device 1 according to the present embodiment will be described.

The vehicle lifted by the lift device 1 in the state shown in FIGS. 1 and 4 stops when the center line of the vehicle coincides with the center of the pair of lift plates 2 lowered to the floor level.

At this time, since the arm holder 3 and the swing arm 4 are both housed in the pit P,
There is no obstruction when the vehicle enters.

Next, the arm cylinder 3 is raised by operating the lift cylinder 7 so that the lower surface of the swing arm 4 pivotally mounted on the arm holder 3 is positioned on the upper surface of the lift table 2 as shown in FIG.

Next, as shown in FIG. 2 and FIG.
Is extended and turned so that the metal fitting 4c provided at the tip of each swing arm 4 comes into contact with a support point on the lower surface of the vehicle.

After that, the hydraulic cylinder 6 is operated to raise the pair of lift plates 2, and the vehicle is lifted up.

Here, the arm holder 3 and the swing arm 4 also rise with the lift plate 2 rising, so that the arm holder 3 is separated from the upper end of the hydraulic cylinder 7.

Thereafter, as shown in FIG. 7, the fluid pressure cylinder 9 is actuated to raise the cover 8 to the floor surface FL, cover the opening of the pit P, and there is a danger that the worker may step inside the pit P. Not to be.

Next, when the vehicle descends after the predetermined maintenance work, the operation is performed in the reverse order of the above.

In this embodiment, an example is shown in which the vertical shaft 10 is fixed to the support plates 2a, 2b protruding from the opposing surface of the lift plate 2, but on the contrary, the vertical shaft 10 is supported from the opposing surface of the arm holder 3. A vertical shaft may be fixed to the support plate by projecting a plate, and the guide shaft may be provided on the lift plate 2.

In this embodiment, the present invention is applied to a twin lift device. However, the present invention is applied to a single plate type lift device having two pairs of swing arms on one plate. Etc. may be applied.

[0034]

As described above, according to the present invention, the lift plate and the arm holder can be connected to each other by the combination of one vertical shaft and its guide bearing. Can be performed smoothly and the manufacture of the lift device is facilitated.

[Brief description of the drawings]

FIG. 1 is a plan view of an embodiment of a vehicle lift device according to the present invention.

FIG. 2 is a plan view in another state of the above.

FIG. 3 is a sectional view taken along line XX in FIG. 1;

FIG. 4 is a sectional view taken along line YY in FIG. 1;

FIG. 5

FIG. 6

FIG. 7 is an operation explanatory view of the above.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lift device for vehicles 2 Lift plate 2a, 2b Support plate 3 Arm holder 3a Depression 4 Swing arm 10 Vertical axis 11 Guide bearing

Claims (3)

[Claims] 1. A vehicular lift apparatus comprising a lift plate and an arm holder disposed outside the lift plate and having a support arm pivotally supported at a root portion, wherein the opposing surfaces of the lift plate and the arm holder are brought close to each other. A lift device for a vehicle, wherein a vertical shaft is provided on one of the lift plate and the arm holder, and a guide bearing for guiding the vertical shaft is provided on the other. 2. A support plate protrudes from the upper and lower positions of one of the opposing surfaces of the lift plate or the arm holder to connect and fix the vertical shaft between the upper and lower support plates and to the other opposing surface. The vehicle lift device according to claim 1, wherein a concave portion in which the support plate intervenes is formed. 3. The vehicle lift device according to claim 1, wherein the number of the vertical axes is one.