JP3191049B2 - Vehicle lifter device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle lifter, and more particularly to a lifter apparatus for a large vehicle such as a truck.

[0002]

2. Description of the Related Art Trucks, especially heavy trucks, have three or four wheel axles. When replacing tires of such a heavy vehicle, all the wheel axles are lifted by lifters. Is In the case of a two-wheel axle such as a small vehicle, it can be lifted relatively easily. However, in the case of a large vehicle having three or four axles, the lifter can be easily positioned. Instead, it is necessary to precisely match the attachment attached to the upper end of the protruding plunger.

Therefore, conventionally, the plunger attachment of the lifter is positioned while looking into the bottom of the vehicle, and the plunger is protruded when the positioning is performed to lift the wheel axle. However, the plunger is correctly positioned on all the wheel axles. It takes a lot of time to do so, which hinders the efficiency of tire replacement work.

[0004]

As described above, the lifter device for lifting a large vehicle such as a truck has the above-mentioned problems. The problem to be solved by the present invention is this problem.In any wheel-based vehicle, regardless of the number of wheel axles, the plunger of each lifter is correctly positioned to stabilize the vehicle. Provide a lifter device that can be lifted by lifting.

[0005]

SUMMARY OF THE INVENTION The lifter apparatus of the present invention comprises a plurality of lifters, each of which can move along a rail and can correctly move to the position of a wheel shaft of a vehicle to be lifted. Accordingly, the lifter pivotally supports the roller on its base, and the roller can roll on the rail. Here, at least one roller is driven to rotate by a motor, and the lifter moves. A hydraulic cylinder is provided vertically below the base, and the plunger of the hydraulic cylinder expands and contracts by a hydraulic pump. A lifting platform is attached to the upper end of the plunger,
Attachments provided on both sides of the elevator hit the both sides of the wheel axle and lift the wheel axle.

Here, each lifter moves along the rail and is arranged at the position of the wheel axle of the vehicle. In the present invention, the position of the wheel axle of each vehicle is stored in the computer in advance. Each lifter is controlled by one button operation so that each lifter is arranged at a distance between the wheel axles (wheel base).

[0007] The lifter device of the present invention is installed on the floor, and the vehicle is disposed across the lifter device, and the wheel shaft of the vehicle is lifted by each lifter. by the way,
Even if the position of the vehicles to be arranged varies, each lifter must move and be properly positioned, and only one of the lifters is correctly aligned with the wheel axle, and the other lifters are mounted on the wheel base of the vehicle. An interval is determined according to the distance. The positioning of the one unit may be performed by an operator or by a sensor, but is not particularly limited in the present invention. Hereinafter, embodiments according to the present invention will be described in detail with reference to the drawings.

[0008]

FIG. 1 is an embodiment showing a vehicle lifter device of the present invention. In the lifter device shown in the figure, four lifters 1, 1,... Are arranged, and can move along the alongside rails. As shown in FIG. 2, the lifter 1 has a hydraulic cylinder 3 mounted vertically below the base 2, and a plunger 4 protrudes above the base 2. The elevating platform 8 is attached. The base 2 is provided with two rollers 5, 5... On both sides thereof, and these rollers 5, 5.
It is listed in

The two rails 6, 6 are arranged on both sides of the pit 7 provided on the floor 9, and the rollers 5, 5,... Roll on the rails 6, 6 so that the lifter 1 can move. . A motor 10 is mounted on the hydraulic cylinder 3,
The chain 11 is wound around the motor 5 so that the roller 5 rotates.

The hydraulic cylinder 3 has a hydraulic motor 12
And a hydraulic pump 13 and a hydraulic motor 12
, The plunger 4 can be made to protrude by hydraulic oil fed from the hydraulic pump 13 to the hydraulic cylinder 3. 4 lifters 1, 1
Are accommodated in a pit 7, and a large space 14 is formed between the lifters 1, 1,..., And a lid 15 is provided above the pit 7 at the same height as the floor surface 9. However, the lid 15 is of a split type, and the lifters 1, 1,... Can move while sliding the lid 15.

The base 2 of the lifter 1 has lids 15a, 15a
Are mounted so as to extend in the front-rear direction, and a slide lid 15b is interposed between the lids 15a, 15a mounted on the lifters 1, 1, and these lids 15a, 1
5b cover the space 14 of the pit 7, and when the lifters 1, 1 approach each other, the slide lid 15b overlaps the front and rear lids 15a, 15a. However, the slide lid 15b interposed therebetween is connected to the front and rear slide lids 15a, 15a by chains 18, 18 so as not to move freely and open the pit space 14.

FIG. 3 shows a case where a truck is lifted by four lifters 1, 1,..., And FIG. 4 is a partially enlarged view of FIG. The attachments 17, 17 of the lift 8 attached to the upper ends of the plungers 4, 4 projecting from the hydraulic cylinders 3, 3, ... of the lifters 1, 1, ... hit the wheel shafts 16a, 16b ..., and the wheel shafts 16a, 16b of the truck.
16b ... can be pushed up.

The truck shown in FIG. 3 has four wheel shafts 16a, 16b, 16c and 16d.
Wheelbase that is the distance between 6a and 16b is A, wheel shaft 1
The wheel base of 6b and 16c is B, and the wheel shafts 16c and 1
The wheel base of 6d is C. As described above, the wheel bases A, B, and C of the respective wheel shafts 16a, 16b are different from each other, but the four lifters 1, 1,... Are located below the respective wheel shafts 16a, 16b. Attachment 1 of elevator 8 if 4 ... protrudes
7, 17... Can be lifted by hitting the wheel shafts 16a, 16b.

Each of the lifters 1, 1,...
a, 16b... are correctly moved to predetermined positions so that they can be lifted. Although the distances between the wheel axles (wheel bases) of a large vehicle having three or four or more wheel axles are different from each other, in the present invention, the wheel bases of all the vehicles are stored in a computer. ing. A large vehicle has a model number for each manufacturer, and stores a vehicle number for each manufacturer and a wheel base corresponding to the number. Therefore, if the operator inputs the maker name and model number of the vehicle, the lifters 1, 1,... Are automatically moved and correctly positioned.

However, the four lifters 1, 1,... Are arranged with the wheel bases A, B, C of the vehicle separated from each other, but when the distance between the lifters 1, 1,. 16a, 16b... Must be aligned. This means that if one of the lifters 1 projects the plunger 4 and the attachment 17 correctly hits the wheel shaft 16, the attachments 17 of the other lifters 1, 1,...

Further, a sensor can be attached to the lift 8 without the operator performing the positioning operation of the lifter 1, and the positioning with the wheel shaft can be automatically performed by the sensor. As described above, the vehicle lifter device of the present invention arranges a plurality of lifters so as to be movable along the rails, and stores in advance the wheelbase of any vehicle in the computer, The following effects can be obtained.

[0017]

According to the lifter device of the present invention, since a plurality of lifters are arranged so as to be movable along the rails, the lifters can be lifted in alignment with the respective wheel shafts of a large vehicle. The lifter is provided with hydraulic cylinders, and the attachment of the elevator mounted on the upper end of the plunger of each hydraulic cylinder can perform a stable lifting operation to lift both sides of the wheel axle. And, in the present invention, since the wheel base of each vehicle is stored in the computer in advance, if the manufacturer name and the vehicle model number are specified,
Each lifter automatically moves to a predetermined position and is correctly positioned. Therefore, it does not take much time to position the lifter as in the related art, and the work efficiency is greatly improved.

[Brief description of the drawings]

FIG. 1 is an embodiment showing a lifter device of the present invention.

FIG. 2 is a cross-sectional view of the lifter device of the present invention.

FIG. 3 shows a case where a truck is lifted by a lifter device.

FIG. 4 is a partially enlarged view of FIG. 3;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lifter 2 Base 3 Hydraulic cylinder 4 Plunger 5 Roller 6 Rail 7 Pit 8 Elevator 9 Floor 10 Motor 11 Chain 12 Hydraulic motor 13 Hydraulic pump 14 Space 15 Lid 16 Wheel shaft 17 Attachment 18 Chain

Claims (2)

(57) [Claims] 1. A vehicle lifter device in which three or more lifters are movably arranged along a rail, and each lifter lifts a wheel shaft of a vehicle, wherein each lifter includes a roller for traveling on a rail and the roller. A computer for controlling the rotation of the motor is stored in a computer for controlling the rotation of the motor, and the distance between the axles (wheel base) of all vehicles is stored. In addition, a vehicle is characterized in that a sensor is attached to one of the lifters, and the other lifters are positioned directly below the wheel axles by correctly aligning one of the lifters with the axle by the sensor. Lifter device. 2. The lifter vertically mounts a hydraulic cylinder below the base and allows a plunger of the hydraulic cylinder to protrude above the base. Attachments are attached to both ends of the upper end of the plunger. The lifting platform is attached, and on both sides of the elongated pit provided on the floor, the roller attached to the base rolls along the rail where the lifter moves, and in the front and rear direction of the base The lifter device for a vehicle according to claim 1, wherein the lid is extended, and a slide lid is arranged between both lifters so as to be overlapped, so that the lid can cover the pit space.