JPS59118612A - Belt loader - Google Patents

Abstract

PURPOSE:To aim at improvements in operation efficiency and safety, by making the rear swivel shaft of a self-propelled, liftable and collapsable belt conveyor turnable and shiftable toward both sides limitedly, in case of a belt loader for cargo-handling at an elevated spot as in aircraft. CONSTITUTION:A front lift 3, whose lower end is of cross structure in type to the cross member of a self-propelled bogie truck 1, is pivotally installed in the truck as free of both cross and longitudinal turnings and controlled by a cylinder (unillustrated herein). A link arm 15 being pivoted on both of a cross member 16 of the bogie truck 1 and a side member 13 of a conveyor belt 26 is made to do ups and downs by means of expansion and contraction of a rear lift cylinder 18, and slidingly shifted sideways as guided by a guide 22 on a plate frame 19 through hydraulic pressure. With this constitution, operation efficiency for loading and unloading is improved and also safety is promoted ever so better.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a belt loader. For loading and unloading baggage onto aircraft that have a loading/unloading port at a high location, a belt loader is used, which is a self-propelled chassis with a belt conveyor device that can raise and lower its front and rear parts. In recent years, aircraft have become larger. In view of the fact that many work vehicles have come to stop and work around aircraft, the applicant has invented a belt loader equipped with a belt conveyor device whose front section rotates at a limited angle in the left and right directions. , filed as Japanese Patent Application No. 197624/1983. The belt loader of the invention is capable of rotating the front part of the belt conveyor device to the left or right beyond the side of the vehicle chassis around the pivot axis on the rear lifting device, and the vehicle platform is different from other competing work vehicles. Glue the front end of the belt conveyor to the aircraft loading/unloading port without causing interference. This had the effect of allowing efficient loading and unloading work. However, since the front end is swiveled left and right and glued to the aircraft loading/unloading port beyond the chassis side edge, the edge of the loading/unloading port and the front end surface of the belt conveyor form an oblique angle approximately equal to the turning angle of the belt conveyor. Since the baggage is held in contact with the other hand, an acute triangular space is created between the aircraft loading and unloading port and the front end of the belt conveyor, making the loading and unloading work between the aircraft loading and unloading port and the front end of the belt conveyor inefficient. It was found that there was a risk of falling baggage or workers.

The present invention completely solves this problem, and is equipped with a belt conveyor that is mounted on a self-propelled vehicle chassis and whose front and rear parts can be raised and lowered, and which is equipped with a belt conveyor system that can rotate the rear part. around the axis.

A belt loader is characterized in that it turns in the left and right direction within a limited angle, and the rear turning axis moves in the left and right direction within a limited range, and the belt loader is characterized in that the rear turning axis of the belt conveyor device is turned left or right. By moving an appropriate amount to the right and then turning the front part to the left or right, the front end of the belt conveyor device can be moved directly in front of the aircraft's baggage loading/unloading port without interfering with other competing work vehicles or the undercarriage. Effect 75 (Existence) The occurrence of acute triangles in the prior application can be prevented by completely adhering υ, which allows for regular collision, and the loading and unloading work of baggage can be carried out safely and efficiently.

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

Example 1 FIG. 1 is a side view showing one example of the belt loader of the present invention.

Figure 2 is also a plan view.

Figure 3 is a sectional view from the front showing the mechanism of the IJ foot cylinder.

FIG. 4 is an enlarged side view from the left of the rear link arm.

FIG. 5 is a plan view showing the internal structure with the conveyor belt removed.

FIG. 6 is a cross-sectional view from the rear showing the structure of the rear link arm portion.

In the figure, 1 is a self-propelled chassis, and 2 is a belt conveyor device.

Reference numeral 3 denotes a multi-stage front lift cylinder, the lower part of which is pivotally connected to a signal supporter 5 by a pivot pin 4, and is freely pivotable about the pivot pin 4.

The cylinder supporter 5 is pivotally connected at both ends to a bracket 7 provided on a crossmen/<5 of the self-propelled chassis l by a pivot pin 8. i.e. front lifton 1
The non-taper 3 has a lower portion pivotally connected to the cross member of the self-propelled chassis 1 in a so-called cross core structure, and has a structure that allows it to turn freely in one direction with one force in the front and back and in the left and right directions. 9 is cylinder supporter 5
This hydraulic cylinder for turning is pivotally mounted between the front lift cylinder 3 and the front lift cylinder 3, and has the function of tilting the front nofton 3 in the lateral direction with respect to the self-propelled vehicle chassis 1. The front lift cylinder 3 is pivotally connected to a conveyor supporter 11 by a pivot pin 10 at the upper part, and the conveyor supporter 11 is attached to two side members 13 of the belt conveyor device 2 by pivot pins 12 at both ends. It is pivotally attached to a bracket 14. That is, the upper part of the front lift cylinder 3 has a cross core structure like the lower part, and is connected to the side member 13 of the belt conveyor device 2. Reference numeral 15 denotes a link arm, whose lower part is connected to the cross member 16 of the chassis 1 by a pivot pin 17 so as to be able to rise and fall freely, and is pivotally connected between the link arm 15 and the self-propelled chassis 1 so that the tally lift cylinder 18 can be expanded and contracted. Performs ups and downs motion. A flat frame 19 is pivotally connected to the upper part of the link arm 15 by a pivot pin 20. 2
Reference numeral 1 denotes a slide frame, which is guided by two east guide rails 22 provided at the front and rear of the flat frame 19 and driven by a hydraulic mechanism, and has a structure that allows it to move within a limited range in the left and right direction. ing. The slide frame 21 is connected to the belt conveyor device 2 by a pivot pin 23 in the center.
Cross member 24 between the two side members 13 of
It is rotatably connected to the That is, the belt conveyor device 2 rotates and rises and falls relative to the link arm 15 at the rear.

It has a structure that allows it to move freely left and right. 25 is a cushion provided at the tip of the belt conveyor device 2;

26 is a conveyor belt, and 27 is a driver's seat.

Embodiment 2 In Embodiment 1, the top surface of the slide frame 21 normally has a slope in the front and back, and since the belt conveyor device 2 on the slide frame 21 rotates around the pivot pin 23, the belt conveyor device 2 rotates as it rotates. The upper surface of 2 also has a slope in the left and right directions. Since the values of the turning angle and the longitudinal inclination angle are small, there is no problem in practical use, but if the rear link arm is configured as shown in Fig. 7, the belt conveyor device 2 can be moved in front of the belt conveyor device without creating a slope from side to side. The parts can be rotated. In other words, the link arm 15 is connected to the front and rear link arms 15', 15.
Pivot points A between the link arms 15', 15 and the flat frame 19 and the chassis 1, respectively.
B, C.

D forms a parallelogram, and the flat frame 19 moves up and down while maintaining parallel to the ground.

As in the first embodiment, the slide frame 21 is guided by two guide rails 22 at the front and rear of the flat frame 19 and moves in the left-right direction. A swivel base 28 is rotatably pivoted to a central pivot pin 24 of a slide frame 21, and a side member 13 of a belt conveyor device 2 is pivotably pivoted to a bracket 29 of the swivel base 28 by a pivot pin 30. do.

With the above configuration, the belt conveyor device 2 can rotate around the pivot pin 24 without creating a slope from side to side.

[Brief explanation of drawings]

FIG. 1 is a side view showing one example of the belt rotor of the present invention. Figure 2 is also an average figure. FIG. 3 is a side view from the front showing the mechanism of the front lift cylinder section. FIG. 4 is an enlarged side view from the left of the rear link arm. □ Figure 5 is a plan view showing the internal structure with the conveyor belt removed. FIG. 6 is a sectional view from the rear showing the structure of the rear link arm. FIG. 7 is an enlarged side view of another example of the rear link arm portion. 1... Self-propelled chassis, 2... Belt conveyor device,
3...Front lift series η°. 4... Pivot pin, 5... Cylinder supporter,
6. Cross member. 7... Bracket, 8... Pivot pin,
9... Hydraulic cylinder for swing. 10... Pivot pin, 11... Conveyor supporter, 12... Pivot pin. 13. Side member, 14... Bracket, 15
．． 15', 15"... link arm, 16...
Cross member, 17... Pivot pin, 18... Rear lift cylinder, 19... Flat plate top frame, 20...
... Pivot pin, 21 ... Slide frame, 22
...Guide rail, 23...Pivot pin, 24.
...Cross member, 25...Cushion rubber,
26...Conveyor belt. 27... Driver's seat, 28... Swivel base, 29... Bracket, 30... Pivot pins A, B, C, D, pivot point total 10

Claims (1)

[Claims] It is mounted on a self-propelled chassis and is equipped with a belt conveyor device that can raise and lower the front and rear parts. A belt loader characterized in that a pivot shaft moves within a limited range in the left and right directions.