JPS626028Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a ramp device that can be applied to a ramp for cargo handling operations.

Cargo handling operations, in which forklifts are used to efficiently load and unload container cars, trucks, cargo, etc., have become popular in recent years. In order to drive a forklift into a vehicle, a board called a so-called "travel board" is usually used by extending it between the ground and the vehicle's loading platform.

However, when the above-mentioned step board is used, the user feels uneasy when entering the forklift, and moving the step board is time-consuming and troublesome.

In recent years, there has been an increasing need for forklifts to be driven directly onto vehicles in order to improve the efficiency of cargo handling operations, and this invention was proposed in response to that demand. An object of the present invention is to provide a tilt table device.

In order to achieve this objective, the present invention installs outrigger devices containing hydraulic cylinders on the front left and right sides of the lower part of the ramp having an inclined surface, and at the center of the front part of the lower part, when the hydraulic cylinders are retracted, A caster is installed at a position slightly protruding from the tip of the outrigger device, wheels are attached to the rear left and right, and a manual hydraulic pump device that sends oil to a hydraulic cylinder to raise and lower the ramp is installed at an appropriate position on the ramp. To provide a tilting platform device which has a structure in which the casters and wheels can be easily moved by simply retracting the outrigger device, and which can be easily set at the height of a vehicle's loading platform by extending the outrigger device. It is.

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side view of a tilting table device showing one embodiment of the present invention, FIG. 2 is an enlarged view taken in the direction of arrow A in FIG. 1, and FIG.
The figure is a sectional view of the outrigger device, and FIG. 4 is a hydraulic circuit diagram of the same device.

In the figure, 1 is a ramp having a slope, and 2 is a vehicle. 3 is an outrigger device fixed to the front left and right sides of the lower part of the ramp 1, 4 is an outrigger device 3
A hydraulic cylinder 5 is built in, and 5 is a ground plate at the bottom of the outrigger device 3. 6 is a caster mounted at the front center of the lower part of the ramp 1 at a position where the wheel portion slightly protrudes from the lower end ground plate when the outrigger attachment 3 is retracted; 7 is a caster mounted on the rear left and right sides of the lower part of the ramp 1. It is a wheel. 8 is a hydraulic pump device attached to the lower part of the inclined table 1; 9 is a manual hydraulic pump for feeding oil to the hydraulic cylinder 4; 10
is a lever connected to the hydraulic pump 9, and 11 is a hydraulic switching valve.

Next, to explain the operation, first, when setting the ramp 1 to the height of the loading platform of the vehicle 2, the hydraulic switching valve 11 is switched to the left, and then the lever 10 is operated to drive the hydraulic pump 9. , by extending the hydraulic cylinder 4. Also, hydraulic switching valve 1
1 to the right (without driving the hydraulic pump 9), the hydraulic cylinder 4 retracts due to the weight of the ramp 1, and the ramp 1 descends. In this way, the height of the inclined table 1 is changed and set to the height of the loading platform.

Next, when moving the inclined table 1, the hydraulic switching valve 11 is switched to the right, and the hydraulic cylinder 4 is retracted by operating the lever 10 to drive the hydraulic pump 9. The caster 6 lands on the ground due to the retraction of the hydraulic cylinder 4, and then the rear wheels 7 also land on the ground. Now, the inclined table 1 can be moved. Note that the ramp 1 may be pushed or towed by another vehicle.

Since the present invention is configured as explained in detail above, the ramp can be set at the height of the vehicle's cargo bed with simple operations, and the ramp can be easily moved without the outrigger device being any obstacle. . Therefore, work efficiency is improved, and safety is improved by eliminating the feeling of anxiety when entering a work vehicle (forklift).

Furthermore, according to the present invention, since the hydraulic cylinder is built into the outrigger device, the hydraulic cylinder is protected by the outrigger device, and the maintenance period can be extended without being affected by external dust, etc., and the operating condition is always smooth. can be maintained.

[Brief explanation of the drawing]

Fig. 1 is a side view of a tilting table device showing an embodiment of the present invention, Fig. 2 is an enlarged view taken in the direction of arrow A in Fig. 1, Fig. 3 is a vertical sectional view of the outrigger device shown in Fig. 2, and Fig. 4 2 is a hydraulic circuit diagram of the apparatus of FIG. 1; FIG. Explanation of the main parts of the figure, 1... Inclined table, 3... Outrigger device, 4... Hydraulic cylinder, 6... Caster, 7... Wheel, 8... Hydraulic pump device, 9
...Manual hydraulic pump, 10...Lever.

Claims (1)

[Scope of utility model registration request] Outrigger devices containing hydraulic cylinders are installed on the left and right front sides of the lower part of the ramp having an inclined surface, and at the center of the front part of the lower part, the hydraulic cylinders are placed at a position that slightly protrudes from the lower end of the outrigger device when retracted. A ramp apparatus characterized in that a caster is equipped with wheels on the left and right rear sides, and a manual hydraulic pump device that sends oil to the hydraulic cylinder to raise and lower the ramp is installed at an appropriate position on the ramp.