JPH02158600A - Vehicle supporting device in two-post lift for automobile - Google Patents

Abstract

PURPOSE:To contrive the improvement of work efficiency by providing a control means telescopically moving a slide arm by a driving means and stopping its action when a detecting lever detects the slide arm started extending to the inner and adapted to one part of a vehicle. CONSTITUTION:A liftable carriage 2 secures to its longitudinal both side surfaces an angular cylindrical horizontal guide arm 3 facing the inner and outer, and its inside provides an angular cylindrical slide arm 4 being able to protrude to the inner by a cylinder 10. Astride inner ends of the front and rear slide arms 4, a supporting lever 6 is secured stopping to an upper surface of its longitudinal rear end a receiving metal 7. The receiving metal 7 mounts to its just lower a selector valve 8 operated by a wheel detecting lever 9. The air cylinder 10 of lockup type is extended with a vehicle riding between the right and left supporting levers 6, when the receiving metal 7 is positioned in a required part in a lower surface of the vehicle, the detecting lever 9 hits a panel part operating the selector valve 8 stopping extension and contraction of the cylinder, and the vehicle is lifted by lifting the carriage 2.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an improvement of a two-post lift for automobiles used for inspection and maintenance of vehicles.

[Conventional technology]

Conventionally, this type of lift includes the following types.

(1) As shown in Figures 3 and 4, two horizontal swing arms (A) are provided on each side, and a receiver (B) is integrated with the tip of each swing arm (A). A vertical screw rod (C) is screwed into the hole.

(2) As shown in Figures 5 and 6, there are two fixed arms (D) on each side, and each fixed arm (D) has a plate-type receiver that can slide slightly in the inner and outer directions. (E) is installed.

[Problem to be solved by the invention]

The above (1) has the following secondary problems.

After the vehicle approaches, the worker turns the four swing arms (A) to an appropriate angle according to the lift-up point of the vehicle, extends each swing arm (A) to an appropriate length, and A series of tasks are performed, including rotating the gold (B) and bringing it as close as possible to the vehicle's lift-up point.All of these tasks are performed while bending over.

Further, after the work is completed, the reverse work to the above is performed in order to make the vehicle leave.

These operations are troublesome, difficult to perform, and require considerable effort and time.

The method mentioned in (2) above has the following problems.

Since the amount of adjustment of the position of the plate type receiver (E) is small, it may become unusable depending on the vehicle model, and may also be a hindrance to maintenance work.

Furthermore, when a vehicle enters, the tires have to climb over the plate-shaped receiver (E), making it difficult for the vehicle to enter.

[Means to solve the problem]

According to the present invention, a carriage for an automobile that can be moved up and down along the left and right pillars is provided with a receiver for supporting the lower surface of the vehicle at the inner end, and a slide arm that is extendable and retractable in the inward and outward directions. In the column lift, a drive means for extending the slide arm, and a control means for detecting that the slide arm extended inward abuts a part of the vehicle and stops the operation of the drive means. By providing this, the above problem is solved.

[For production]

When the slide arm extends inward and a portion of it comes into contact with the vehicle, the slide arm automatically stops.

〔Example〕

FIGS. 1 and 2 schematically illustrate essential parts of an embodiment of the present invention.

On the outer surface of each of the left and right columns (1), a carriage (
2) is provided.

Rectangular cylindrical horizontal guide arms (3) facing inward and outward directions are fixed to both the front and rear sides of the carriage (2), respectively.
Inside the guide arm (3) is a rectangular cylindrical slide arm (
4) is fitted so that it can protrude inwardly while being guided by rollers (5) (5).

A support rod (6) is fixed across the inner ends of the front and rear slide arms (4), and holders (7) made of metal, rubber, etc. are fixed to the upper surfaces of the front and rear ends of the support rod (6). It is worn.

Directly below the receiver (7), a switching valve (8) as a switching means is attached to the outer surface of the support rod (6).

This switching valve (8) is adapted to be actuated by a vehicle detection rod (9) which then projects above the support rod (6).

An air cylinder (10) as a driving means is inserted through the slide arm (4), and its outer end is connected to a shaft pin (11) fixed to the outer end of the guide arm (3) and facing in the front-rear direction.
The inner end of the piston rod (12), which is supported by
3).

Note that the air cylinder (10) has a piston rond (
12) is a lock-up type that can automatically lock when it expands and contracts and stops.

When the vehicle detection rod (9) contacts the rocker panel of the vehicle and is tilted, it activates the switching valve (8),
The operation of the air cylinder (10) is stopped.

For example, by pressing a required operation button on an operation pendant (not shown) hanging from the column (1), the carriage (2) is raised and lowered by a hydraulic cylinder (not shown), and the air cylinder (10) is expanded and contracted.

First, retract the air cylinder (10) and press the support rod (6).
With the left and right support rods (6) (6) moved outward,
Allow a vehicle to enter the space.

Next, operate the operation pendant etc. to open the air cylinder (
The piston rond (12) of 10) is made to protrude inward.

When the receiver (7) is positioned at a key point on the underside of the vehicle, the vehicle detection rod (9) comes into contact with the rocker panel of the vehicle and is tilted, and the piston rod (12) stops as described above.

Next, operate the operation pendant etc. to move the carriage (2
) raises the vehicle.

Lowering and exiting the vehicle are performed in the reverse manner to the above.

Needless to say, a hydraulic cylinder or an electric motor may be used instead of the air cylinder (10).

〔Effect of the invention〕

(1) When the vehicle enters or exits, the slide arm is retracted, so the vehicle does not need to climb over the receiver.

Easy to enter and exit.

(2) Only by operating the switch on the operation pendant, etc.
The position of the receiver is automatically determined as required, and the slide arm can also be retracted after the work is completed.

This is done by operating an operating pendant, etc., so there is no need for workers to bend over to work, as in the past.
Work efficiency is improved and worker fatigue is reduced.

(3) The position of the receiver is automatically determined according to the vehicle, so it can be smaller than conventional fixed types and does not interfere with maintenance work, etc. .

[Brief explanation of the drawing]

FIG. 1 is a plan view showing only the right front half of an embodiment of the present invention. FIG. 2 is a longitudinal sectional front view taken along line A-A in FIG. 1. FIG. 3 is a plan view schematically showing a first example of a conventional two-post lift, FIG. 4 is a front view, and FIG. 5 is a plan view schematically showing a second example of a conventional two-post lift. . FIG. 6 is a plan view as well. (1) Support column (2) Carriage (3) Guide arm (4) Slide arm (5) Roller (7) holder (9) Vehicle detection rod (11) Axis pin (13) Axis pin (6) Support rod (8) ) Selector valve (10) Air cylinder (12) Piston rod Figure 1

Claims (5)

[Claims] (1) A two-post lift for automobiles consisting of a carriage that can be raised and lowered along the left and right pillars, equipped with a receiver at the inner end to support the underside of the vehicle, and equipped with a slide arm that can extend and retract in and out directions. , comprising a drive means for extending the slide arm, and a control means for detecting that the slide arm extended inward has come into contact with a part of the vehicle and stopping the operation of the drive means. A vehicle support device in a two-post automobile lift, characterized by: (2) A vehicle support device in a two-post automobile lift according to claim (1), wherein the driving means is an air cylinder. (3) A vehicle support device in a two-post automobile lift according to claim (1), wherein the driving means is a hydraulic cylinder. (4) A vehicle support device in a two-post automobile lift according to claim (1), wherein the driving means is an electric motor. (5) Claim (1) wherein the control means comprises a vehicle detection rod that is tilted when it comes into contact with a vehicle, and a switching means that stops the drive means in accordance with the tilt of the vehicle detection rod.
A vehicle support device in a two-post automobile lift according to any one of (4) to (4).