JPS5836605Y2 - Car maintenance lift - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an automobile maintenance lift used to lift up the vehicle body during maintenance, repair, or inspection of large buses, large trucks, etc.

Conventionally, this type of lift for large vehicles has hydraulic cylinders A and A' buried under the installation floor as shown in Fig. 1, and vehicle body support frames B and B' are provided at the upper ends of the cylinders, one of which is attached to the vehicle. It is now possible to adjust the movement according to the size of the vehicle, and lift up the vehicle by operating hydraulic cylinders A and A'.
This is a so-called autolift, and as shown in Figure 2, four or six columns C are erected on the floor, and the drive-on-play HD and support beam E are connected to the vehicle by wire ropes or hydraulic cylinders from each column. A device that lifts up by coming into contact with it has been put into practical use.

However, as shown in Figure 1, the auto-lift type has the disadvantage that it requires foundation work for a very deep and large pit P, which requires a great deal of cost and time for installation. Due to restrictions, the area is almost completely closed, which has the disadvantage that maintenance work at that location is difficult.

The floor-mounted multi-column lift shown in Fig. 2 has the advantage of relatively easy installation and foundation work. Since the vehicle is running on the ground, there are restrictions on the entry angle, and a large space is required to orient the vehicle before entry.Also, since the lower surfaces of both sides of the vehicle body are supported by the drive-on plate D1 or support beam E, it is difficult to maintain the vehicle. The disadvantage is that it creates difficult areas to work with.

This invention was made to eliminate the above-mentioned drawbacks, and consists of two pairs of supporting columns facing each other, vertically suspended from the foundation frame, and the foundation frame being fixed to the installation floor. However, the other pair of supports are vertically installed on the foundation and are movably installed on rails installed on the installation floor via rollers, so that the movement can be adjusted according to the length of the maintenance vehicle. A pair of fixedly installed columns are equipped with a pair of carriages that move up and down in synchrony, and the carriages are equipped with horizontally rotatable and extendable arms for lifting the vehicle body, and a pair of columns whose movement can be adjusted. A vehicle body lifting beam is provided which is connected between opposing columns, and the vehicle body lifting arm and the vehicle body lifting beam support the front and rear ends of the maintenance vehicle and lift it up. This eliminates the need for conventional pit construction and allows installation with simple foundation work.The boarding floor has minimal ups and downs, and by moving the movable support, boarding can be done from diagonally. This is an automobile maintenance lift that requires less space, allows the support points of the car body to be adjusted to match the maintenance area, and also has the features of supporting the car body at the front and rear ends of the vehicle, so there are fewer places that are difficult to maintain. It is intended to provide.

Hereinafter, embodiments of the present invention will be explained with reference to the drawings.
1 and 2 are fixed columns, 3 and 4 are movable columns, and one of the opposing columns 1 and 3 is a drive column having hydraulic units 5 and 6, and a lift cylinder 7.8 is suspended within the column. There is.

Piston rods 9 and 10 are fitted into the lift cylinder 7.8 so as to be able to move up and down, and are moved up and down by the action of hydraulic pressure.

11. Piston lot 9 with 12U chain wheel.
A vertically movable drive unit is rotatably installed on the upper part of 10, and one end is guided by the drive columns 1 and 3, and the other end is guided by a guide roller (not shown) inside the drive columns 1 and 3. It is engaged with a chain 16 fixed to the carriage 14.15, and the vertical movement of the piston rod 9.10 by the action of hydraulic pressure on the lift cylinder 7.8 raises and lowers the drive carriage 14.15 via the chain 16. do.

The columns 2 and 4 are driven columns, and there is a driven carriage 17 inside.
．． 18 is guided by guide rollers (not shown) and is provided to be movable up and down.

The driven carriage 17,18 has one end connected to the drive carriage 1.
4. Attach the other end to the lower end of wire pulley 20, 21
．． Drive carriage 14.15 by a wire 23 fixed via 22 to the upper end of driven carriage 17.18.
It moves up and down in sync with the

The fixed columns 1 and 2 are vertically installed at both ends of a foundation frame 24, and the foundation frame 24 is fixedly installed on the installation floor with anchor bolts 25.

A telescopic vehicle body lifting arm 26 is mounted on the carriages 14, 17 of the fixed struts 1, 2 so as to be rotatable in the horizontal direction via a support shaft 27.

A vehicle body holder 28 whose height is adjustable is provided at the tip of the vehicle body lifting arm 26.

The movable struts 3 and 4 are vertically installed on the base 29, and engage a vehicle body lifting beam 30 fixed to the carriage 15, 18 so as to be able to move up and down.

The base 29 on which the movable columns 3 and 4 are vertically mounted is mounted on two rails 31 for movement provided on both sides of the lift installation floor.
2, and the rollers are driven by the rotation of the motor 33 and can be moved in the longitudinal direction of the vehicle.

The oil is added to the lift cylinder 7.8 through oil piping (not shown) from the hydraulic units 5 and 6, and the piston rod is added to the lift cylinder 7.8.
Activate 9.10.

A hydraulic unit 5 provided on the fixed column 1 and the movable column 3,
6 are of the same specification, and can be raised and lowered in synchronization by controlling start and stop at the same time.

Control switches (not shown) are capable of simultaneous control and independent control.

To explain the lift-up operation of a maintenance vehicle using the lift of this invention, first, lower the vehicle body lifting arm 26 of the lift to the lowest position and rotate it horizontally, and set it on the outside of the lift to facilitate the entry of the vehicle. do.

The movable strut 3.4 is moved under the control of the motor 33 to a position suitable for the body length of the maintenance vehicle.

A maintenance vehicle enters the vehicle from the fixed pillars 1 and 2 side, and stops when the rear support point of the vehicle matches the vehicle body lifting arm 26.

The vehicle body lifting arm 26 is rotated horizontally, further expanded and contracted to select a support point suitable for the location to be repaired, and the hydraulic unit 5 is operated to raise the vehicle body lifting arm 26 and bring it into contact with the support point. and stop.

At this time, if there is a difference in height between the left and right support points, adjustment is performed using the vehicle body support 28.

Next, the motor 33 is controlled to move the movable strut 3.4 to a position where the vehicle body lifting beam 30 fits the vehicle front support point.
The hydraulic unit 6 is operated to raise the vehicle body lifting beam 30, bring it into contact with a support point, and stop it.

Next, the hydraulic units 5, 6 are rotated to apply hydraulic pressure to the lift cylinders 7.8.

In this lift cylinder 7.8, the vehicle body lifting arm 26 and the vehicle body lifting beam 30 operate in synchronism with the operation of the piston rods 9, 10 in conjunction with hydraulic action, thereby making it possible to raise the vehicle horizontally.

When the vehicle reaches the desired height, the hydraulic unit 5.6 is stopped to stop the oil supply and the oil valve (not shown) is closed to stop the vehicle from rising.Maintenance of the vehicle at the desired height. Able to perform work.

To lower the vehicle, by opening the oil valve and communicating the hydraulic units 5 and 6 with the lift cylinder, the piston rod 9.10 is pushed down by the weight of the vehicle, the vehicle body lifting arm 26, the vehicle body lifting beam 30, etc. The oil returns to the hydraulic units 5, 6, allowing the vehicle to be lowered.

According to the present invention, the arm for lifting heavy bodies on the front side of the vehicle can be rotated horizontally, so even if this arm is swung outward when entering the vehicle, there will be no undulations on the entry floor. Since the vehicle body lifting arm is configured to be extendable and retractable,
The support points of the vehicle can be adjusted, and the vehicle can be supported at any point on the lower part of the vehicle.

Furthermore, since the front and rear ends of the vehicle are supported by vehicle support beams that run perpendicular to the entry direction, the lower part of the vehicle is wide open, ensuring a wide maintenance space where work can be carried out safely.

Moreover, since it does not require a deep pit and has a simple configuration, it can be installed with simple foundation work.

[Brief explanation of drawings]

FIGS. 1 and 2 are general schematic diagrams of conventional devices that are known and have been put into practical use. 3 to 6 are schematic diagrams each showing an embodiment of the present invention,
Figure 3 is a side view of the lift, Figure 4 is a front view of the lift, and Figure 5 is a side view of the lift.
FIG. 6 is a schematic diagram of the structure of the drive device, and FIG. 6 is a three-dimensional schematic diagram showing the overall structure of the lift. 1.2...Fixed pillar, 3, 4...Movable pillar, 5, 6
... Hydraulic unit, 7, 8 ... Lift cylinder, 2
4...Foundation frame, 26...Arm for lifting the vehicle body, 29.
...Foundation stand, 30...Beam for lifting the vehicle body, 31...
Rail, 32...roller.

Claims (1)

[Scope of utility model registration request] In an automobile maintenance lift equipped with two pairs of columns facing each other, a pair of left and right columns in front of the entrance of the car are fixedly installed, and each of these columns has a horizontally rotatable structure.
In addition, a pair of carriages, each equipped with a telescopic arm for lifting the vehicle body, are installed so that they can be raised and lowered in synchrony, while the other pair of supports on the far side of the entrance can be moved in the direction of entry on the foundation surface. A lift for automobile maintenance, characterized in that a vehicle body support frame that moves up and down in synchrony is connected between these supports.