JPS58113008A - Self-aligning device - Google Patents

Abstract

PURPOSE:To aim at making the self-alignment of a belt achievable so certainly and quickly without the smallest strain, by lowering a roll at the opposite side to the side to which the belt leans, in a self-aligning device for a belt conveyor. CONSTITUTION:When a conveyor belt 20 gets leaning to the right in a moving direction, the belt edge hits a side roll 18 located at the rear side yet farther in the moving direction than a roll 9 and finally is brought down to the outside. With this, the belt turns round centering on a monobloc, doglegged arm 10 and its horizontal part moves upward, turning an L-shaped arm 21 round with a pin 24 as the center and also turning a roll 8 at the left round downward centering on a pivotal point laying between roll cradles 3 and 2. According to this method, the belt 20 is automatically restored to the center by means of difference in trough angles. And, after being self-aligned, since force that brings down the side roll 18 at the right becomes extinct, the belt is brought back by a spring 17 while the roll 8 at the left is restored to the extent of a regular trough angle via a spring 5.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic alignment device for automatically aligning the belt by taking into consideration the carrier roller when the belt on the carrier side of a belt conveyor is off-center and shifted.

As shown in Fig. 1, in a conventional device of this type, a roller holder with a required trough angle on both left and right sides is mounted on a stand (cL) with a 6
In addition to rotatably supporting the book rollers (b), (c, and d), the roller holder supports the side rollers (#) attached to both left and right ends of the stand (1) on the rear side in the traveling direction of the conveyor belt (not shown). The medium-heat section of the stand (L) is attached to the stand (C) so that it can rotate horizontally.
e) and pushes the side roller (1) outward, the roller (61(a) (d) rotates horizontally around the fulcrum (σ) of the stand (a), and the side roller pushed by the belt (
The roller (cl or t'1(d) on the #) side is inclined toward the front in the direction of belt movement to effect centering of the belt.

However, in the conventional device described above, the side roller (#) is pushed outward to tilt the roller (c) or (d) forward and align the belt, so alignment cannot be performed reliably. Moreover, when the load of the belt is applied to the roller, it becomes more difficult to move the roller to the alignment angle.The present invention was made with an attempt to ensure alignment. A spring is installed between the left and right rollers and the roller mount to allow the carrier rollers on both the left and right sides to swing freely in the vertical direction and to maintain them at a predetermined trough angle at all times, and the side rollers are integrated. The arms equipped with the above-mentioned functions are arranged so that the side rollers are located on the left and right sides, and the other ends of the arms are pivoted to the fixed side so that when the side rollers fall outward, the other ends of the arms can move upward, and each of the above-mentioned The present invention is characterized in that it includes a mechanism for lowering the carrier roller at the other end by moving the other end of the arm upward.

Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIGS. 2 and 6, on the roller stand (1),
The roller holder, which is divided into three parts, the center and left and right, is a stand (2) (
3) (4) is arranged, and the center roller holder is fixedly supported on the stand (2) (11), and the left and right roller holders are placed on the stand (3). 2) is pivoted to be able to rotate vertically, and supported at a predetermined trough angle by springs (5) and (6), respectively, and the six supports are mounted on stands (2), (3), and (4). , carrier roller (
7) Both shaft ends of (81(9)) are supported rotatably.

On the roller pedestal (1), the roller holder has an arm Q (e
Ql) are arranged facing in opposite directions, and the vertically elongated holes (
), the arm QO (11) is made to be able to move up and down in a horizontal state via the bin α station, and the arm a0α is
One end of υ that is inclined diagonally upward is pivotally connected to the support stand αG on the roller mount (11) with a pin, and a spring α force is interposed between the one end and the roller mount (1). When the side roller (end) or α roller integrally attached to each end of the arm QOαυ is pushed outward by the conveyor belt, the arm αO moves around the pin (end) as a fulcrum.
Or, the horizontal part of aυ can move upward along the elongated hole α □Furthermore, there is an L-shaped roller frame (on 11) for engaging with the other end of each horizontal part of the arms αO and αυ. The arms (C) and (A) are pivoted to the pin (C) using the placket on the roller mount (1), and one end of the V-shaped arm Q (A) is attached to the V-shaped arm α1αυ.
On the other hand, attach the other end of the bent arm Qυ to the roller pedestal (3).
(4) is attached to the lower surface, and when the doglegged arm member or 0η moves upward, it pushes up one end of the L-shaped arm Q1) or the wing and lowers the other end, lowering the roller (8) or (9). .

With the above configuration, when the conveyor belt +-W is operating normally without meandering, the left and right rollers (81 (9)
) is held at a predetermined trough angle.

Now, when the conveyor belt (1) starts to shift to the right side in the direction of travel, the side edge of the belt hits the side roller (to) located on the rear side in the direction of travel than the roller (9), and finally the belt H Note that the side rollers (to) are pushed outward. As a result, the dog-shaped arm 0Q, which is integrated with the side roller (to), rotates around the pin (to), and the horizontal portion of the arm moves upward to move the L-shaped arm Qυ to the pin (c). Rotate the rollers on the left side in the direction of travel (
8), the roller receiver is rotated downward around the pivot point between the tables (3) and (2).

When the left roller (8) above goes down, the right roller (9)
The belt (E) is automatically returned to the center and aligned due to the difference between the trough angle and the trough angle.

When the belt H is aligned, the force that pushes down the right side roller (to) disappears, so the side roller (to) is returned to its original position by the spring Q7'l, and at the same time, the left roller (8) is The elasticity of the spring (5) restores the trough angle to the normal trough angle.Next, when the belt wing is shifted to the left in the direction of travel and the left side roller Ql is pushed down, the dogleg-shaped arm α0 and the L-shaped arm move in the same manner as above. The roller (9) on the right side is lowered through the arm, and the belt m is returned to the center.

Similarly, the present invention is not limited to the above-mentioned embodiments, and it goes without saying that other mechanisms can be adopted as long as they provide similar effects.

As described above, according to the automatic alignment device of the present invention, when the conveyor belt goes to one side, the rollers on the opposite side to the one where the conveyor belt goes to one side are lowered, so alignment of the belt is forced. This can be done reliably without causing any friction between the belt and the rollers, resulting in the excellent effect that the V@centering action can be quickly achieved.

[Brief explanation of the drawing]

FIG. 1 is a front view of a conventional automatic alignment device, FIG. 2 is a rear view of the automatic alignment device of the present invention, and FIG. 3 is a plan view of FIG. 2. (1)...Roller mount, (21(3) (4)...
Roller holder is stand, (5) (6)...spring, (7)
(81(9)...carrier roller, 000σ...
Dog-shaped arm, Q? )...Spring, (to) 09・
... Side rollers, (E) ... Conveyor belt, (C) Handle ... L-shaped arm. Patent applicant Ishikawajima Harima Heavy Industries Co., Ltd.

Claims (1)

[Claims] 1) A spring is installed between the left and right rollers and the roller mount to allow the carrier rollers on both the left and right sides to swing freely in the vertical direction and to maintain them at a predetermined trough angle at all times, and the side rollers are Arms provided integrally are arranged so that the side rollers are positioned on the left and right, and the other ends of the arms are pivoted to the fixed side so that when the side rollers fall outward, the other ends of the arms can move upward, and each of the above-mentioned A self-aligning device characterized by comprising a mechanism for lowering a carrier roller at the other end by moving the other end of the arm upward.