JPS5941425B2 - large cargo transport vehicle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a large freight transport vehicle in which an upper beam provided with a loading platform is displaced vertically and horizontally with respect to a traveling device during transport.

When transporting large cargo loaded onto a vehicle, the upper beam of the loading platform must be connected to the lower frame, i.e., the traveling device, even when traveling around curves or during transportation to avoid obstacles.
A device for relative displacement in the vertical and horizontal directions is employed.

This type of device includes one with a lifting device on the core plate;
Those in which the vertical load supporting part such as a center plate slides in the horizontal plane by a center pivot provided on the lower frame, those in which a turntable is installed between the upper beam and the lower frame, and this is equipped with a shift device for the upper beam, etc. There is.

However, conventional large cargo transport vehicles have adopted these devices without changing the basic vehicle structure, making the structure complex and each device not operating smoothly. They had drawbacks such as being difficult to handle, such as sometimes causing lateral pressure and derailment, and requiring sophisticated control equipment.

The present invention has been made to solve the above-mentioned drawbacks.
A support stand is provided between the upper beam on which cargo is loaded and the lower frame provided on the traveling device, and is swingably connected to the upper beam via a parallel link and a universal joint. The lower frame is supported by a center plate so as to be tiltable and rotatable, and the support base is provided with a lifting device that displaces the upper beam in the vertical direction and a feeding device that has a covert sliding device that displaces the upper beam in the horizontal direction. The object of the present invention is to provide a large cargo transport vehicle which is characterized by a simple structure, operates reliably, is easy to handle and control, and can travel safely.

The present invention will be explained below based on embodiments shown in the drawings.

A support platform 3 provided between an upper beam 1 on which cargo is loaded and a lower frame 2 provided with a traveling device includes parallel links 4 and 5.
A pivot-shaped center plate 8 is connected to the upper beam 1 through universal joints 6, 6', 7, 7', and is provided with the lower frame 2, so that the lower frame 2 can be tilted and rotated. Supported.

The floating platform 9 is supported on the support base 3 via a sliding device 10, and the sliding device 10 has, for example, a concealed type roller built therein, and normally the roller is pulled up and the housing of the device 10 is removed. The sliding device 10 is brought into direct contact with the support base 3, and the minute movements of the sliding device 10 due to vibrations during running are suppressed by the friction restraining force. The table 3 and the floating table 9 are connected, and the floating table 9 moves left and right on the support table 3 by operating the feeding device 11.

The sliding device 10 and the feeding device 11 provide horizontal displacement to the upper beam 1.

A lifting device 12 for vertically displacing the upper beam 1 is provided on the floating platform 9, supports the upper beam 1, and moves the upper beam 1 up and down by operating the lifting device 12.

The lifting device 12 uses a self-locking hydraulic cylinder,
Driven by manual pump or electric pump, etc.
It is also possible to use a separate locking mechanism or a mechanical lifting device using screws, jacks, etc.

The sliding shoe 13 is composed of, for example, a dry friction type slip plate provided on the sliding platform 9 with an appropriate gap between it and the upper beam 1, and the sliding shoe 13 is made of a dry-friction type sliding plate provided on the sliding platform 9 with an appropriate gap between it and the upper beam 1. It restricts movement.

The sliding shoe 13 may be constructed in a constant contact type such as by being lightly pressed through a rubber spring having the above-mentioned outer valve linear characteristic, or may be provided with wheels or rollers (G).

14 is the upper support provided on the support base 3, 15 is the lower frame 2
This is the lower support installed in the.

Next, the operation of the above embodiment will be explained. Normally, the rollers built into the sliding device 10 are pulled up to bring the housing of the device 10 into direct contact with the support base 3, and the frictional restraint force is used to generate the sliding device based on vibrations during running. Although the upper beam 1 is fixed to the lower frame 2 by suppressing minute movements of the housing 10, when moving the upper beam 1 in the left and right direction, the rollers are rolled out to lift the housing off the support base 3 and then This is done by operating the feeding device 11 while reducing the resistance, and moving the floating table 9 on the support table 3 in the direction of the arrow in FIG.

In this case, the rollers are pulled up and fed out by hydraulic, manual or power pumps, but it is also possible to use screws, cams, wedges, etc.

Next, the upper beam 1 is moved up and down by operating a lifting device 12 provided on the floating platform 9 to adjust the height of the cargo.

Therefore, in this embodiment, the feeding device 11 and the lifting device 12
By appropriately operating the upper beam 1, the relative position of the upper beam 1 to the lower frame 2 can be freely changed.

And support stand 3, parallel links 4, 5, universal joint 6.6'
, 7, 7', the sliding table 9, the sliding device 10 and the feeding device 11 are arranged in a horizontal plane, and also in the support table 3 and the parallel link 4.
, 5, universal joints 6, 6', 7°7', lifting device 12, and floating platform 9 each constitute a pivot device in the vertical plane, so the vertical load is from upper beam 1 → lifting device 12 → floating Base 9 → Sliding device 10 → Support base 3 → Core plate 8 → Lower frame 2
The left and right loads are from the upper beam 1 → sliding shoes 13 → sliding platform 9 → feeding device 11 → support platform 3 → core plate 8 → lower frame 2, and the longitudinal load is from the upper beam 1 → universal joints 6 and 7 → parallel link 4,5
→ Universal joints 6', 7' → Support base 3 → Core plate 8 → Transmitted to lower frame 2.

Therefore, since the lifting device 12 and the sliding device 10 bear the vertical load, and the feeding device 11 bears only the lateral load, one-way control is performed for a single load, and the sliding device 10 and the feeding device 11
As shown in the above example, the elevating device 12 may have a simple structure, reliable operation, and easy control.

Further, a suitable relative displacement detection mechanism is provided between the upper beam 1 and the lower frame 2, the lifting device 12 and the feeding device 11 are each driven by one power, and the drive device and the relative displacement detection mechanism are connected. The relative displacement between the upper beam 1 and the lower frame 2 is
It is also possible to control automatically in response to commands from outside.

As described above, the present invention provides a support base swingably connected to the upper beam via a parallel link and a universal joint between the upper beam on which cargo is loaded and the lower frame provided on the traveling device. A support stand is supported by a pivot-type center plate so as to be tiltable relative to the lower frame, and an elevating device that displaces the support stand in the vertical direction relative to the upper beam, and a concealed sliding device that displaces the support stand in the horizontal direction. Since each feeding device is provided with a feeding device, it is possible to give the upper beam the desired displacement depending on the height of the load when passing through a curve, and also to reduce the lateral pressure when passing through a curve.The structure is simple and it operates reliably. However, it is an extremely excellent invention that is easy to handle and control.

[Brief explanation of the drawing]

1 and 2 show an embodiment of the present invention, with FIG. 1 being a sectional front view and FIG. 2 being a partially sectional side view. 1 is an upper beam, 2 is a lower frame, 3 is a support base, 9 is a floating platform, 10 is a sliding device, 11 is a feeding device, 12 is a lifting device, and 13 is a sliding shoe.

Claims (1)

[Claims] 1. A support stand swingably connected to the upper beam via a parallel link and a universal joint is provided between the upper beam on which cargo is loaded and the lower frame provided on the traveling device, and the support stand is connected to a pivot type. The lower frame is supported by a center plate so as to be tiltable and rotatable, and the support base is provided with a lifting device that displaces the upper beam in the vertical direction and a feeding device that has a concealed sliding device that displaces the upper beam in the horizontal direction. A large cargo transport vehicle characterized by: