JPH0532315B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION A. Field of Industrial Application The present invention comprises a pair of pillars erected at a predetermined distance from each other, and each pillar is provided with a carriage that moves up and down with at least one side exposed. The base end of a swing arm is pivotally attached to the lower exposed surface of the carriage so as to be horizontally rotatable, and a support is provided at the tip of the swing arm to support the vehicle by abutting against the underside of the vehicle body to be raised or lowered. This invention relates to a two-post lift for vehicle maintenance that effectively prevents a lifted vehicle from sliding down or overturning due to the influence of unbalanced loads in the two-post lift.

B. Prior Art A vehicle that is lifted up by a two-post lift for vehicle maintenance is supported by a swing arm that projects horizontally from the bottom of each carriage that moves up and down along both supports. And that swing arm is
The arm length and expansion angle can be adjusted depending on the size and type of the vehicle, and the vehicle body is normally supported in a well-balanced manner using only two swing arms on each side. However, the weight distribution of the vehicle body that is applied to the swing arm is not equal between the front and rear, and especially in FF vehicles (front engine front drive vehicles), the balance is extremely large, with the rear being 3 and the front being 7. bad. Therefore, if heavy items such as the rear bumper or tires are removed during maintenance, the balance will be further disrupted and the vehicle will tend to tip forward, creating the risk of the vehicle slipping off or tipping over with only four carriages. If a vehicle falls during maintenance, there is a risk of an accident that could cost the lives of the workers at the point of fall.

Conventionally, for example, Japanese Patent Publication No. 55-11116 discloses a technique for tying a vehicle with an overturn prevention belt, and by applying this tying technique, it was possible to prevent a vehicle from overturning.

C. Problems to be Solved by the Invention When using an overturn prevention belt to connect the vehicle, it is troublesome to adjust the length of the belt, and it is difficult to know which part of the vehicle to connect the vehicle to, or if there is no suitable part. The tethering was incomplete, resulting in poor operability and poor reliability.

D. Means for Solving the Problem Therefore, the present invention provides a method for properly adjusting the vehicle body when a vehicle lifted up by a two-post lift loses its front and rear weight balance and is about to fall or fall. By supporting the vehicle and preventing it from falling, it is possible to prevent personal injury at the very least.The structure is such that the base end of a horizontal arm is pivoted to the upper part of the carriage so that it can rotate freely horizontally. A vertical arm is attached to the tip of the arm facing downward, a length adjustment mechanism is provided on both arms, and an abutment member is provided at the bottom end of the vertical arm to abut against the inner periphery of the vehicle's tire house. .

E. Function By simply adjusting the length of the horizontal and vertical arms and bringing the abutment members into contact with the inner circumferential edge of the tire house, auxiliary support for the vehicle can be achieved reliably, and the operability is excellent. The impression I get is one of trust.

F. Embodiment The drawing shows an embodiment of a two-post lift for vehicle maintenance according to the present invention, in which a pair of columns 1, 1 are installed vertically at a predetermined distance to allow vehicles to enter.
Carriages 2, 2 with exposed surfaces on opposite sides are provided so as to be movable up and down, and U-shaped brackets 3, 3, 3', 3' are pivotally supported on both sides of the lower exposed surfaces of the carriages 2, 2, respectively. Two swing arms 4, 4, 4', 4' are pivotally connected to each other via the swing arms 4, 4, 4', 4' so as to be horizontally rotatable. Both carriages 2, 2 operate synchronously, and swing arms 4, 4' can be extended and contracted and fixed in position.
It has a symmetrical structure, with receivers 5, 5 for supporting the vehicle M coming into contact with the lower surface of the vehicle body at the tip.

Only one side will be explained below.

At the upper part of the exposed surface of the carriage 2, which is guided by a column 1 and raised and lowered by a hydraulic cylinder (not shown), a horizontal arm 7 is provided with a base end thereof horizontally rotatable via a U-shaped bracket 6. A vertical arm 8 is attached to the tip of the horizontal arm 7 so as to be movable downward. The horizontal arm 7 has an inner cylinder 7b slidably inserted into the outer cylinder 7a to have a variable overall length, and is provided with a locking bolt 9 whose tip is a mating pawl on the outer cylinder 7a side. A rack 10 is provided on the side so that it can be locked at a desired length, and the vertical arm 8 is fitted with a cylindrical guide body 17 at the tip of the horizontal arm 7. Each has a length adjustment mechanism that can be locked at a desired position by means of a rack 13. A contact member 20 is provided to protrude laterally at the lower end of the vertical arm 8, and the contact member 14 is brought into contact with the inner edge of the tire house P of the vehicle M to provide supplementary support to the vehicle body. can.

In the two-post lift formed in this way, the carriage is lowered to the lowest position, the vehicle M is placed between the supports, and the swing arm is moved so that the support is in contact with a predetermined part of the vehicle body. At the same time, the lengths of the horizontal arm and the vertical arm are adjusted using adjustment mechanisms, respectively, and the contact member is brought into contact with the inner edge of the tire house.

In the case of a FF vehicle, the front part of the tire house that the contact member contacts is the front part. Therefore, even if the center of gravity of the vehicle moves significantly toward the front due to the removal of heavy components such as the rear wheels or rear bumper during maintenance, the peripheral edge of the tire house remains in place at the front of the vehicle. Since it is properly held in place, it acts as a preventive measure to prevent it from slipping off or falling over.

In the embodiment, the horizontal arm is pivotally mounted via the U-shaped bracket 6 so that it can rotate horizontally, so it can be brought into contact with either the front or rear tire house, and by considering the support balance of the vehicle, the FF car,
It is also effective when lifting up an RR vehicle (rear engine rear drive vehicle) by reversing the vehicle's approach direction.

In this way, the two-post lift for vehicle maintenance of the present invention effectively utilizes the tire houses formed at the front and rear, so it can be used with both FF and RR vehicles, and each arm serves as a side guard. The impression from the exterior also gives the impression of higher reliability.

G. Effect According to the present invention, if either the front or rear side of the vehicle body is held close to the center of gravity, even if a heavy member is removed from a part far from the center of gravity and the center of gravity moves significantly toward the holding side, the vehicle body will remain stable. It is supported in a stable state, so there is no risk of personal injury due to slipping or falling. Moreover, it is easy to operate, provides reliable auxiliary support, and is highly reliable.

As a result, it becomes possible to safely perform maintenance on vehicles with extremely poor weight distribution, such as FF cars and RR cars, which has great benefits.

[Brief explanation of the drawing]

Fig. 1 is a front view of a two-post lift for vehicle maintenance according to the present invention, Fig. 2 is a side view of the same, Fig. 3 is a plan view of the same, and Fig. 4 is an explanatory diagram showing the structure of the length adjustment mechanism. It is. 1... Support column, 2... Carriage, 3, 3'... U-shaped bracket, 4, 4'... Swing arm, 5... Receiver, 6... U-shaped bracket, 7... Horizontal arm, 7
a... Outer cylinder, 7b... Inner cylinder, 8... Vertical arm, 9... Locking bolt, 10... Rack, 11... Cylindrical guide body,
12... Locking claw, 13... Rack, 14... Contact member,
M...vehicle, P...tire house.

Claims (1)

[Claims] 1 A pair of pillars are erected at a specified distance from each other,
Each of these supports is provided with a carriage that moves up and down with at least one side exposed, and the base end of a swing arm is pivotally attached to the lower part of the exposed side of the carriage so that it can rotate horizontally, and the swing arm is moved up and down at the tip of the swing arm. In a two-post lift equipped with a support that supports the vehicle by contacting the underside of the vehicle, the base end of a horizontal arm is pivotally pivoted horizontally on the upper part of the exposed surface of the carriage. Vehicle maintenance in which a vertical arm is attached to the tip of the arm facing downward, a length adjustment mechanism is provided on both arms, and a contact member protruding from the lower end of the vertical arm is brought into contact with the inner periphery of the tire house of the vehicle. Two-post lift.