JPS5992811A - Belt loader - Google Patents

Abstract

PURPOSE:To turn a belt conveyer apparatus by lifting the front and rear portions of the belt conveyer apparatus with a front lift cylinder and a rear lift cylinder, and then expanding and contracting a rotary cylinder to incline the front cylinder left and right. CONSTITUTION:A flat support frame 18 is pivoted on the upper portion of a link arm 14 by pivot pins 19. The upper surface of the support frame is graded longitudinally, so that as a belt conveyer is pivoted on a pivot pin 20 on the support frame, it is graded from side to side. Since the turning angle and the angle of longitudinal inclination are small not to be an obstacle to practical use. The link arm comprises two front and rear link arms 14', 14'', and pivotal points A, B, C, D of the arms 14', 14'', the support frame 18 and a platform 1 form a parallelogram, whereby the frame 18 is elevated in parallel with the ground. In this arrangement, the conveyer can be pivotal on the pin 20.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a belt loader used for loading and unloading baggage onto an aircraft. As shown in FIG. 1, a belt loader conventionally used for loading and unloading baggage onto an aircraft has a belt conveyor device 2 mounted on a self-propelled chassis l via a multi-stage front lift cylinder 3 at the front and a link arm 14 at the rear. The structure is such that the front and rear can be raised and lowered respectively.

When loading and unloading baggage, the belt loader is approached from the front toward the baggage unloading port of the aircraft, the front of the belt conveyor device 2 is raised by the front lift cylinder 3, and the rear is linked by the rear lift cylinder 17. It is raised via the arm 14. Align the front and rear of the belt conveyor device 2 with the height of the baggage loading/unloading port of the aircraft and the loading platform of the carrier vehicle that transports the baggage. A belt conveyor device 2 is used to load and unload baggage. However, as aircraft have become larger in recent years, a large number of work vehicles have come to operate around the aircraft. When loading and unloading baggage using a conventional belt loader equipped with front and rear lifting devices, the chest of drawers interferes with other work vehicles next to it, making it impossible to align the top of the belt conveyor device with the aircraft baggage loading/unloading port. ．． The disadvantage was that it was difficult to load and unload baggage.

Therefore, the present invention relates to a belt loader equipped with lifting devices at the front and rear. When loading and unloading aircraft K baggage using a belt loader characterized by being equipped with a rotation device for the belt conveyor device, if necessary, the front of the belt conveyor device can be rotated left and right beyond the side of the vehicle chassis. This has the effect that the upper part of the belt conveyor can be aligned with the loading/unloading port without interference between other work vehicles and the undercarriage, and work can be carried out efficiently.

Also, when a conventional belt loader approaches an aircraft baggage loading/unloading port even if it does not interfere with other work vehicles.

In order to attach the front of the belt conveyor device to the baggage loading/unloading port without shifting from side to side, it was necessary to approach the baggage loader very carefully.9 However, the belt loader of the present invention is equipped with a left and right rotation mechanism for the belt conveyor device. It also has the advantage that it can be easily and securely attached to the baggage loading/unloading port.

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

FIG. 2 is a side view showing an example of the belt loader of the present invention. FIG. 3 is a plan view as well. FIG. 4 is a sectional view from the front showing the mechanism of the front lift cylinder section. FIG. 5 is an enlarged view of the rear link arm section. FIG. 6 is a side view and a plan view showing the structure with the conveyor belt removed. FIG. 7 is a sectional view showing the structure of the rear link arm.

In the figure, 1 is a vehicle chassis, and 2 is a belt conveyor device.

3 is a multistage front lift cylinder.

The lower part is pivotally connected to the rectangular cylinder support pipe 5 by a pivot pin 4, so that it can freely turn in left and right directions.

The support vibe 5 is pivotally connected at both ends to brackets 7 provided on the cross member 6 of the vehicle chassis 1 by pivot pins 25 so as to be pivotable in the front and rear directions. The front lift cylinder 3 has a lower portion pivotally connected to a cross member 6 of the vehicle chassis 1 in a so-called cross-center structure, and has a structure that allows it to freely turn forward, backward, left and right. Reference numeral 8 denotes a swing hydraulic cylinder pivotally connected between the support vibe 5 and the front lift cylinder 3, which acts to tilt the front lift cylinder 3 laterally with respect to the vehicle chassis.

The front lift cylinder 3 is pivotally connected to the support vibe 10 by a pivot pin 9 at the upper part.

The support pipe 10 is pivotally connected at both ends to brackets 13 provided on two side members 12 of the belt conveyor device 2 by means of pivot pins 11. 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 12 of the belt conveyor 9j Fl 2.

Reference numeral 14 denotes a link arm, whose lower part is connected to the cross member 15 of the chassis 1 so as to be able to rise and fall freely, and is pivotally connected to the IJll between the link arm 14 and the chassis 1, and performs the raising and lowering motion by the expansion and contraction of the lift cylinder 17. . 18 is a pivot bin 19 on the upper part of the link arm 14.
This is a flat support frame that is pivotally attached to the frame. The support frame 18 is connected to two side members of the belt conveyor device 2 by the pivot bin 20 in the medium heat section: -1
It is rotatably connected to the cross member 21 between the two. That is, the belt conveyor device 2 connects the link arm 1 at the rear.
4, it has a structure that can be rotated and raised freely.

22 is a cushion comb provided at the tip of the belt conveyor device, 23 is a conveyor belt, and 24 is a driver's seat.

That is, in the belt loader of the present invention, the front and rear parts of the belt conveyor device are raised by a front lift cylinder and a rear lift cylinder, respectively, and then the swing cylinders are extended and contracted to tilt the front cylinder in the left and right direction. It is characterized by the ability to turn.

Further, in the embodiment shown in FIG. 2, the upper surface of the support frame normally has a longitudinal slope, and since the T-belt conveyor device on the support frame pivots around the pivot bin 20, as the belt conveyor device rotates, Creates a slope from side to side. Since the values of the turning angle and the longitudinal inclination angle are small, there is no practical problem. Furthermore, the rear link arm part is attached to the 8th
If configured as shown in the figure, the belt conveyor device can be rotated without creating a slope from side to side. In other words, the link arm is composed of two front and rear link arms 14'14', and the respective pivot points A, B, C, and D of the link arm 14'14#, the support frame 18, and the chassis 1 are on four parallel sides. The support frame 18 is configured to move up and down while maintaining equilibrium with the ground, and a swivel base 26 is pivotally connected to a pivot bin 20 at the center of the support frame 18, and a pivot bin 27 is attached to the swivel base 26. The side member 12 of the conveyor belt is configured to be pivotally mounted so as to be able to rise and fall freely. With the above configuration, the belt conveyor can turn around the pivot bin 20 without creating a slope from side to side.

[Brief explanation of the drawing]

Fig. 1 is a side view showing an example of the structure of a conventional belt loader, Fig. 2 is a side view showing an example of the belt loader of the present invention, Fig. 3 is a plan view, and Fig. 4 is a front lift-on cylinder mechanism. FIG. 5 is a sectional view from the front showing A1ζ, and a side view showing an enlarged view of the carrier link arm portion. Fig. 6 is a plan view showing the structure with the conveyor belt removed, Fig. 7 is a sectional view showing the structure of the rear link arm, and Fig. 8 is an enlarged view of another example of the rear link arm. FIG. 1: 11 units 12: Belt conveyor device, 3: Front lift cylinder, 4: Vibration bin, 5: Square cylinder support pipe, 6: Cross member, 7: Bracket, 8
: Hydraulic cylinder for swing, 9: Pivot pin, 10: Support pipe, 11: Pivot bin, 12: Side member, 13 Nib bracket, 14.14'14'': Link arm, 15: Cross member 16: Pivot bin, 17:
Rear lift cylinder, 18: Support frame, 19.
Pivot bin, 20 Pivot bin, 21 Cross member, 22 Cushion rubber, 23' conveyor belt,
24: Driver's seat, 25 Pivok 1 top pin, 26: Swivel base, 27 Pivot bin, A, B, C, D
pivot point. Number of patent applicants: 1, 2, 30, 80

Claims (1)

[Claims] It is mounted on a self-propelled chassis. Equipped with a belt conveyor device that can raise and lower the front and rear parts. A peltoloader characterized in that the belt conveyor device can turn left and right by a limited angle.