JPS5932365B2 - Belt support device for center-folding belt conveyor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a belt support device for a folded belt conveyor.

As shown in Fig. 1, the center-folding type belt conveyor is equipped with a conveyor girder in which a fixed girder 1 and a movable girder 2 are connected by a pin 3, so that the movable girder 2 can freely rotate up and down. .

A horizontal fixed roller 4 and inclined rollers 5 arranged at an angle on both sides of the fixed roller 4 are attached to this conveyor girder, and a conveyor belt 6 is movably supported by each of these rollers 4 and 5.

In particular, since the conveyor girder of the folding type heald conveyor bends, the inclined roller 5 in the bent part near the pin 3 has an inclination angle θ in the straight part so that the conveyor belt 6 can easily follow the conveyor girder and bend.
A fixed slope angle θ, i.e. a trough angle θ not less than 3
supports the conveyor belt 6.

In such a folding type belt conveyor, when the movable girder 2 is in a straight line with the fixed girder 1, both width ends of the conveyor belt 6 are lowered near the pin 3 where the trough angle θ is small, and the conveyor belt 6 This causes the inconvenience that the objects carried on top may fall down.

An object of the present invention is to reduce the trough angle of the inclined rollers when the conveyor girder is folded in the middle so that the conveyor belt can be easily bent, and to automatically adjust the trough angle of the inclined rollers to the angle of 0. The purpose is to prevent the transported items from falling out.

An embodiment of the present invention will be described below with reference to FIGS. 3 to 6.

This embodiment is adopted for each inclined roller on the fixed girder 1 and the movable girder 2 near the pin 3.

The support shaft end of the inclined roller 7 on the fixed roller 4 side is supported rotatably in the vertical direction, and the support shaft end on the other side is connected to the bracket 8.

An elongated hole 9 is bored in this bracket 8, and the upper end of a vertical link 11 is attached to a pin 10 that is slidably passed through the elongated hole 9.

The vertical link 11 is slidably inserted into a vertical elongated hole 13 provided in the support frame 12 of each roller 4, 7 in the middle.

The lower end of this vertical link 11 is connected to a pin 16 that is slidably passed through a horizontal elongated hole 15 of a horizontal link 14, as shown in FIG.

This horizontal link 14 is connected with a pin 20 to be vertically rotatable to a bracket 17 that is fixed to the fixed girder 1 and protruded downward, and the other end is fixed to the movable girder 2 and protruded downward. It is supported by a bracket 18.

When supporting the horizontal link 14 with this bracket 18,
This is accomplished by providing a horizontal elongated hole 19 in advance at the other end of the horizontal link 14, and attaching a pin 21 slidably through this elongated hole 19 to the bracket 18.

When the fixed girder 1 and the movable girder 2 are in a straight line, the center-folding belt conveyor with the above configuration has the following characteristics:
As shown in FIGS. 3 and 5, the vertical link 11 is connected to the fixed roller 4.
The outer support shaft end of the inclined roller 7 is raised to a height of 1, and is supported by each girder 1, 2 via a horizontal link 14.

Therefore, the inclined roller 7 is supported at a large trough angle θ.

Therefore, both ends of the conveyor belt 6 in the width direction do not fall down, and the objects carried on the conveyor belt 6 can pass near the pins 3 without falling off.

Next, in the halfway folded state in which the movable girder 2 moves downward around the pin 3, the horizontal link 14 rotates downward around the pin 20, as shown in FIG.

The linear distance between the brackets 17 and 18 changes due to the rotation of the movable girder 2, but since the horizontal link 14 slides on the pin 21 through the elongated hole 19, the horizontal link 1
4 is not unreasonable.

When the horizontal link 14 is lowered downward, the fixed girder 1, movable girder 2, and each bracket 17° and 18
, and the horizontal link 14 form a pentagon with the pin 3 as the apex.

For this reason, each girder 1゜2 and the elongated hole 1 of the horizontal link 14
The distance from 5 becomes longer.

In this case, the length of the vertical link 11 extending upward from each girder 1, 2 becomes substantially shorter as the bend angle of the conveyor girder increases.

Therefore, the end of the outer support shaft of the inclined roller 7 is lifted and held by a height 4 (A2<4.) corresponding to the bending angle with respect to the fixed roller 4.

Therefore, as shown in FIG. 4, the trough angle of the inclined roller 7 is small, such as θ2 (θ2<θ1), and the conveyor belt 6 is supported in a nearly flat state at the bent portion, and the conveyor belt 6 is automatically moved to the moving girder 2 without any force. It can be bent to follow the target.

The length of the vertical link 11 that protrudes upward from each girder 1, 2 is shorter when the horizontal link 14 is lowered downward.
This is because the vertical link 11 connected to the elongated hole 15 is pulled downward and slides down the elongated hole 13.

At this time, the relative position of the vertical link 11 with respect to the horizontal link 14 and the outer support shaft end of the inclined roller 7 changes, but the pin 10 connects the elongated hole 9 of the bracket 8 with the elongated hole 15 of the horizontal link 14. Since the vertical links 16 slide each other, no excessive force is applied to the vertical links 11.

Furthermore, when the movable girder 2 is aligned with the fixed girder 1, the horizontal link 14 rotates upward about the pin 20, and as shown in FIG. and the horizontal link 14, it approaches a rectangular quadrilateral shape.

Therefore, the distance between the horizontal link 14 and each girder 1, 2 becomes shorter according to the bending angle of the conveyor girder, and the vertical link 11 protrudes upward from each girder 1, 2 by the shortened distance. be done.

Therefore, as shown in FIG. 3, the inclined roller 7 is supported by a large trough angle θ, and can automatically return to a state in which the transported objects can be prevented from falling.

As described above, according to the present invention, the inclination angle of the inclination roller of the folding type belt conveyor can be automatically adjusted appropriately according to the bending angle of the conveyor girder. It has the effect of preventing spillage as much as possible.

[Brief explanation of the drawing]

FIG. 1 is a side view of the center-folded portion of a conventional center-fold type belt conveyor, FIG. 2 is a front view of the belt support roller in FIG. 1, and FIG. 3 is a belt support roller adopted in an embodiment of the present invention. FIG. 4 is a diagram showing the state of the support roller in FIG. 3 at the time of center folding, FIG. 5 is a schematic diagram of the vicinity of center folding in a non-center folding state in an embodiment of the present invention, and FIG. 5 is a schematic diagram in a half-folded state near the half-fold shown in FIG. 5. FIG. 1...Fixed girder-12...Movable girder-13゜10.16,20,21...Pin,
4... Fixed roller, 6... Conveyor belt, 7... Inclined roller, 8, 17, 18.
...Bracket, 9,13゜15.16...
...Slot hole':, 11... Vertical link, 14...
...Horizontal link.

Claims (1)

[Claims] 1. A conveyor girder in which a movable girder is rotatably attached to a fixed girder, a horizontal link rotatably attached to one girder between the respective girders is slidably supported by the other girder, A belt support device for a folded belt conveyor, comprising: a vertical link attached to each girder so as to be vertically movable; and a vertical link attached to the horizontal link, and the vertical link connected to an outer end of an inclined roller of the conveyor.