JPS5926814A - Impact roller - Google Patents

Abstract

PURPOSE:To improve shock absorptive property of a dropped load by rotatably fixing a hollow rubber through a bearing to the outer periphery of a hollow shaft where an expansible member is passed through the axial portion thereof, interposing a spacer between each hollow shaft and fixing the expansible member on a roller carrier. CONSTITUTION:A shock applied to rollers 1-3 when a load drops on a belt 13 is primarily absorbed by elasticity of rubber 6 of the roller surfaces. Subsequently, a coil spring 7 is expanded to enlarge the interval among the rollrs 1-3, so that the shock is secondarily absorbed, and the tertiary absorption attained by expansion of the coil spring 7. In this arrangement, a shock applied by a dropped load is absorbed to improve a cushion effect.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an impact roller that absorbs the impact when a load falls onto a belt-1- at a load receiving portion of a belt conveyor.

As shown in Fig. 1, a plurality of impact rollers (b) are arranged in line in the traveling direction of the belt (c) in the load receiving section (,) of the belt conveyor, and the load that is thrown in through the shoes 1-(d) is is dropped onto a belt (c) passing over an impact roller (b) while being prevented from scattering by a skirt (e),
The impact at this time is absorbed by the impact roller.

The conventional impact roller (b), as shown in Fig. 2,
Bracket (g) on the roller mount (1) supported on the conveyor frame of the belt conveyor.

Six rollers (b-1) and (b-2) are made by standing (A) and wrapping rubber (i) around the surface of a metal pipe.

(b-3) between the above brackets (g) and (A) and (I).
Rotatably supported at the required trough angle between L) and (h) l~
The impact force when a load falls onto the belt (c) is absorbed by the elasticity of the rubber (j) on the surface of each roller.

However, in the conventional impact roller described above, the roller (b-1) is supported on the roller mount (f).

(b-z) and (b-3) have a structure in which only the rubber (i) on the surface absorbs the impact when the load is dropped, so rubber (i) 1
．． If the elasticity deteriorates, there is a possibility that the above-mentioned impact cannot be absorbed sufficiently.

The present invention is intended to have flexibility as a whole and to be able to sufficiently absorb the impact when a load is dropped.

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

As shown in Fig. 6, each of the left, right and center rollers (1+,
(2+, (3) is attached to the outside of the hollow shaft (4).
The hollow rubber (6) is fitted through the rollers fl+, +21, (3+) so that the rubber (6) can freely rotate around the hollow shaft (4). ), a coil spring (7) with a diameter smaller than the inner diameter of the hollow shaft is passed through the shaft and 17, and the coil spring (7) is inserted between the left and right rollers (++, (2+) and the center roller (3)). Spacer (8) fitted in (7)
1, (91 is interposed respectively, and both ends of the coil spring (7) as the shaft are erected on the conveyor frame 00) (roller mount bracket) (II), (12
) to be fixed. Several sets of impact rollers having such a configuration are arranged side by side in the direction of movement of the belt conveyor's bell l-(13)-7 to absorb the impact caused by the load falling onto the belt 03) at the load receiving section of the belt conveyor. Let it absorb.

04] is one connecting member.

Since the above configuration is used, the roller mounting bracket) (N
l, (fixed to 121) 1-da coil spring (
7), each roller m, (2), (31
is a coil spring (force self-weight and belt 03) and a roller (]), (2+.

The load (3) sets the required run angle as shown in the figure, and the trough angle sets the roller (1).

+21, (3) are close to each other, but spacer (8)
, (9) maintains a predetermined distance without contact.

Now, when a load falls onto belt (03), belt (13)
The impact force at the time of the fall is transmitted to the rollers f+), (2), and (3) via the rollers f+), (2), and (3). Roller (1), (2+
, (3) can be primarily absorbed by the elasticity of the rubber (6) on the roller surface,
In addition, the coil spring (7), which acts as a non-rotating shaft, can provide secondary absorption due to its cushioning properties when the gap between each roller expands due to the expansion of the force, and the overall flexibility due to the expansion of the coil spring (7). Tertiary absorption is possible depending on the nature of the substance.

In this way, the impact when the load falls can be absorbed by the elasticity of the roller itself and the elongation of the shaft due to the use of a spring in the shaft, so a sufficient cushioning effect can be exerted, and the impact on the conveyor frame 00) can be absorbed. can be prevented from being communicated.

In the above, the roller full has a cushioning effect,
+2+, f3), only the rubber (6) can rotate,
The hollow shaft (4) must not rotate, and each roller is connected to the belt 03.
) as it rotates as the spring (7) moves forward.
), and even if the roller receives an impact when the load falls, it can be rotated freely by the movement of the belt 03) while absorbing the impact.

It should be noted that the present invention is not limited only to the embodiments shown in "-". For example, the case where a coil spring (7) is used as the shaft of each roller (11, +2) and +3+ is illustrated, but the coil spring ( A rubber rope with sufficient strength may be used in place of the sword, and the rubber on the roller surface (6
) is a moon with arbitrary irregularities on its surface,
Left and right rollers m, (2+ and platen blade Q+l,
(It is also possible to insert a spacer between 12 and 12+, and other changes may be made outside the scope of the present invention.)

As described above, according to the impact roller of the present invention,
It has a structure in which the shaft is hollow so as to pass through the telescopic member, and rubber is rotatably fitted on the surface via a bearing, and a space is interposed between each roller with the telescopic member as its axis. As a whole, it is flexible and has a sufficient number of 7,737 points, and the roller can be largely displaced against the impact when a load falls, resulting in a large resiliency effect other than the conventional roller itself. You can make the most of your
The above impact can be sufficiently absorbed.

[Brief explanation of drawings]

FIG. 1 is an overall schematic diagram of a belt conveyor, FIG. 2 is a front view of a conventional impact roller, and FIG. 6 d is a front view of a new model showing an example of the impact roller of the present invention. (1), (21, (31 roller), (4)... hollow shaft, (5)... bearing, (6) rubber, (7)... coil spring, (81, (91 spacer). 1st Figure-59

Claims (1)

[Claims] 1) A hollow L-rubber is rotatably fitted via a bearing on the outside of a plurality of hollow shafts whose central portions are penetrated by a telescopic member, and a spacer is interposed between each hollow shaft, An impact roller characterized in that both ends of the elastic member are fixed to a roller loading platform.