JPS6143246B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a scraper conveyor that scrapes and conveys transported goods on a trough, and particularly relates to an inversion structure of a scraper plate attached to a conveying belt.

Conventionally, a scraper conveyor is provided with a discharge port 2 and a chain wheel 3 at the head of the conveying trough 1.
A charging hopper 4 and a chain wheel 5 are provided at the tail of the
An endless chain 7 protruding from the chain wheel 3 and the chain wheel 5 is rotatably tensioned. In many cases, the trough 1A on the tail side is made horizontal so that the loading position is not too high, the trough 1B on the head side is tilted and raised so that the cargo can be stored in the discharge part, and a bent trough 1C is interposed in between. and install the presser rail 8,
The objects in the trough 1 are transported by a scraper plate 6 that rotates together with a chain 7. However, from conventional experience, the spacing between the presser rail 8 and the trough 1C is set large so that the raking plate 6 and the chain 7 can easily pass through the presser rail provided on the trough 1C at the bent part. When doing so, there was a drawback that a portion of the transported material remained at the bent portion away from the trough 1C.

To compensate for this drawback, an arm 10 is provided on the scraper plate 9, and the arm 10 is rotatably attached to the chain 7, and the chain 7 has a rotation stopper 11 for restricting the rotation of the arm 10.
A, 11B are fixed, and in the trough 1, the scraper plate 9 freely contacts the trough 1 by the arm 10, and when the scraper plate 9 passes through the head chain wheel 3, the rotation stopper 11A contacts the arm 10.
When the scraper plate 9 passes through the tail chain wheel 5, the rotation stopper 11B prevents the scraper plate 9 from turning over due to its own weight. This has been improved so that it stops. However, when the scraping plate 9 and the arm 10, which are automatically reversed, are locked to the rotation stop 11B, the impact may damage the rotation stop 11B and generate noise.

It is an object of the present invention to provide a scraper conveyor that eliminates the above-mentioned impact and noise and that smoothly and quietly reverses a rotatable scraping plate.

The intention of this invention is to
A scraper 15 is attached to an arm 14 that is rotatably mounted on the arm 14, and the scraper 15 is supported by the chain 12 during the return stroke and supported by the trough 1 during the transport stroke. A guide surface 16 to be brought into contact with the arm 14 is provided, and the guide surface 16 is placed in contact with the arm 14.
This is intended to facilitate the direction change of the scraper plate 15 and the transfer between the supports.

The configuration of an embodiment of this invention will be explained based on the drawings.

Fig. 3 is a diagram showing the structure in which a scraper is attached to the chain according to this embodiment, Fig. 4 shows the main part of the conveyor head, Fig. 5 shows the main part of the conveyor tail, and
Components common to the figures are given the same reference numerals.

In the figure, a chain wheel 3 provided at the head of the trough 1,
An endless chain 12 is rotatably tensioned to a chain wheel 5 provided at the tail, an arm 14 is rotatably attached to the chain 12 via a pin 13, and a scraper plate 15 is fixed to one end of the arm 14. A contact piece 16 is formed at the other end of the arm 14, and the center of gravity of the combination of the arm 14 and the scraper plate 15 is biased toward the scraper plate 15 side than the pin 13. Both ends of the scraper plate 15 protrude so as to engage with the chain 12. The chain wheel 5 is provided with a concentric rotating cylinder 17, and the diameter of the rotating cylinder 17 is large enough to interfere with the contact piece 16 which is in contact with the scraper plate 15 on the outside of the chain 12 that enters the chain wheel 5. A guide surface is formed and configured.

In addition, when the scraper plate 15 engages with the chain 12 in FIGS. 3 and 5, the contact surface 16 touches the rotating cylinder 17.
An example is shown in which the abutting surface 16 is made parallel to the chain 12 so as to abut tangentially with the bottle 13, and the abutting surface 16 protrudes forward as shown at 16A on the side of the scraper 15 from the bottle 13, and 16B on the opposite side.

In FIG. 6, the abutting surface 18 is formed to project obliquely to the side opposite to the mounting side of the scraper plate 15, so that the tip of the abutting surface 18 and the rotary cylinder 17 interfere with each other.

Next, the operation of the above configuration will be described.

The scraper 15 rotating together with the chain 12 advances in contact with the trough 1 and passes through the vicinity α of the head of the trough 1B, and then the arm 14 passes through points b and c with the scraper 15 facing down. Next, both ends of the scraper plate 15 engage with the chain 12, pass through d, e, and f, and fold back the head chain wheel 3.
The scraping plate 15, which is obtained by folding back the head chain wheel 3, is engaged with the chain 12 at both ends and is located above the chain, and the contact surface 16 is parallel to the chain 12, and the scraper plate 15 is brought into the state of g and advances toward the tail chain wheel 5. do. While the scraper plate 15 passes through h, j, and k, when the arm 14 tries to rotate in the direction of arrow D relative to the chain 12, the contact surface 16A and the rotating cylinder 17 come into pressure contact with each other, and the arm 14 tries to rotate in the direction of arrow E. Then, the abutting surface 16B and the rotating cylinder 17 are brought into pressure contact, and the direction is smoothly changed according to the rotation of the chain. Scraping board 15
While moving from k to m, as the chain 12 moves away from the rotating cylinder 17, the arm 14 changes direction and gently brings the scraper plate 15 into contact with the trough 1A. In the case of the inclined abutting piece 18 shown in FIG. 6, the tip of the abutting piece 18 is forcibly brought into contact with the rotating cylinder 17, passing from h to k, and connecting with the rotating cylinder 17 between k and m. As the chain 12 moves away, the arm 14 changes to bring the scraping plate 15 into contact with the trough 1A.

The rotating cylinder 17 can be freely replaced with a curved surface that contacts the contact pieces 16 and 18.

As explained above, this invention connects the chain and the raking plate via the rotatable arm, and by providing the tail with a curved surface that comes into contact with the arm, the raking plate rotates along the curved surface until it comes into contact with the trough. Since the rotation of the moving arm is restricted, a scraper conveyor in which the scraping plate attached to the arm reverses smoothly and quietly has been obtained.

[Brief explanation of the drawing]

Figure 1 is an overall view of the scraper conveyor, Figure 2 is a conventional rotatable scraper installation diagram, Figure 3 is a detailed view of the scraper installation of the embodiment of the present application, Figure 4 is a detailed view of the head, and Figure 5 6 is a detailed view of the tail, and FIG. 6 is a detailed view of the tail of another embodiment. 12: Rotating chain, 14: Arm, 15: Scraping plate, 1
6, 18: Contact piece, 17: Guide surface.

Claims (1)

[Claims] 1. In a conveyor in which a chain having a scraper plate is rotatably provided in the trough, an arm is rotatably attached to the rotary chain, the scraper plate is attached to one end of the arm, and an abutment piece is formed at the other end of the arm. A scraper conveyor, characterized in that both ends of the scraper protrude so as to engage with a rotating chain, and the tail portion is provided with a guide surface that interferes with the contact piece until the scraper is reversed and comes into contact with the trough.