JPS6145045Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a roller conveyor, and in particular, in a belt-driven roller conveyor in which a drive belt is passed through the underside of a carrier roller and the drive belt is pressed from below by a presser roller, the pressing force of the presser roller is adjusted. It has been made possible.

An embodiment of the present invention will be described based on the drawings.

1 is a pair of frames provided oppositely,
The frame is provided with tilt holes 2 at appropriate intervals, and the shaft 4 of a carrier roller 3 is loosely fitted into the tilt holes 2, and is rotatably mounted via a washer 5 and a stop pin 6. There is. Reference numeral 7 denotes an endless drive belt that comes into contact with the lower surface of the carrier roller 3, and as the drive belt 7 rotates in the direction of arrow A, the carrier roller 3 rotates in the direction of arrow B. Reference numeral 8 denotes a presser roller that pushes up the drive belt 7 from below, and is appropriately arranged approximately in the middle of the carrier roller 3.
The strength of the contact between the carrier roller 3 and the drive belt 7 is adjusted. Both ends of the shaft 9 of this presser roller 8 pass through a vertically elongated hole 10 bored in the frame 1, and are rotatably supported by an angular engagement piece 11 via a washer 12 and a pin 13. The engagement piece 11 supports one or more presser rollers 8. Reference numeral 14 denotes an adjusting body for adjusting the vertical position of the presser roller 8, and it is shaped into a desired polygon according to the adjustment stage, but in the embodiment, it is square shaped, and its periphery is cut and raised. Locking pieces 15a, 15b, 15c, and 15d having different heights from the bottom surface as a, b, c, and d are provided upright, and a through hole 16 is bored in the center. This adjustment body 14 is attached to the flange 17 of the frame 1.
The through hole 16 of the adjusting body 14 and the through hole drilled in the flange 17 are aligned so that the bolt 15 is inserted, and the nut 16 is screwed to rotate the adjusting body 14 in a horizontal plane. It is attached freely. Then, the desired locking pieces 15a, 15 of this adjustment body 14 are
The jaws 11a of an angular engagement piece 11 that pivotally supports the presser roller 8 are engaged and supported by b, 15c, and 15d.

Therefore, in the roller conveyor of the present invention, when adjusting the strength of contact between the carrier roller 3 and the drive belt 7, the adjustment body 14 is horizontally rotated while lifting the presser roller 8, so that the height of the adjustment body 14 from the bottom surface is adjusted. Locking pieces 15a, 1 different from a, b, c, d, respectively
A desired locking piece among 5b, 15c, and 15d is positioned on the presser roller 8 side, and the jaw portion 1 of the angular engaging piece 11 has the presser roller 8 pivotally supported on this locking piece.
By engaging and supporting 1a, the presser roller 8
This is done by changing the top and bottom positions of the . This adjustment can be made using the carrier roller 3 depending on the load to be transported.
The pressing force of the presser roller 8 is adjusted so that the minimum torque is applied to the load, so that when the load being conveyed is stopped and accumulated, the line pressure of the load is minimized.
Furthermore, when the load being conveyed in the roller conveyor of the present invention is stopped, the carrier roller 3 rotated by the drive belt 7 is braked by friction with the stopped load and slides up along the inclined hole 2. Since the contact between the carrier roller 3 and the drive belt 7 is canceled or reduced, the carrier roller 3 no longer rotates, and the drive belt 7 begins to slide under it, thereby reducing the line pressure of the load.

As described above, the roller conveyor of the present invention adjusts the upper and lower positions of the presser roller by rotating the adjustment body and engaging and supporting the engaging piece that pivotally supports the presser roller with the locking piece at a desired height. This has the practical benefit of being able to easily adjust the strength of contact between the carrier roller and the drive belt.

[Brief explanation of the drawing]

FIG. 1 is a front view of an embodiment of the roller conveyor of the present invention, FIG. 2 is a sectional view thereof, and FIG. 3 is a front view of an adjustment body 14 in the embodiment. 1...Frame, 3...Carrier roller, 7...
... Drive belt, 8 ... Presser roller, 10 ... Vertical hole, 11 ... Engagement piece, 14 ... Adjustment body, 15 ...
Locking piece, 17... flange.

Claims (1)

[Scope of utility model registration request] A plurality of carrier rollers are disposed on opposing frames at appropriate intervals, a drive belt is disposed in contact with the lower surface of the carrier rollers, and a presser roller that presses the drive belt against the carrier rollers is appropriately disposed at approximately the middle position of the carrier rollers. Both ends of the shaft of this presser roller pass through a vertical hole drilled in the frame, and are rotatably attached to angular engagement pieces that are divided into lengths that support an appropriate number of presser rollers on the outside of the frame. An adjustment body is rotatably supported on the flange of the frame, and has locking pieces of different heights erected on the peripheral edge thereof, and one of the locking pieces has a jaw portion of the engaging piece. A roller conveyor characterized by engaging and supporting.