JPS6121459Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a wound medium tensioning device for a conveyor or an elevator that conveys spreadable powder, and particularly relates to a structure for sealing the shaft hole of a tensioning wheel.

2. Description of the Related Art Conventionally, a conveyor and an elevator for conveying spread powder will be explained with reference to FIGS. 1 and 2. A winding medium 2 is rotatably suspended between wheels of a closed case 1, and a rotating shaft 4 of one of the wheels 3 is projected outside the closed case 1 through a long shaft hole 5 opened in the closed case 1. . The end of the rotary shaft 4 protruding outside the sealed case 1 is fitted into a reciprocating take-up bearing 6, and the take-up bearing 6 has a sliding plate 7 that faces the case 1 and always shields the shaft hole.
to fix. A flexible and elastic sealing piece 8 attached to the entire surface of the sliding plate 7 is interposed between the sliding plate 7 and the case 1. A guide rail 9 for a sliding plate 7 is provided in the case 1 in parallel to the shaft hole 5. The sliding plate 7, which reciprocates along the guide rail 9, moves the take-up bearing 6, the rotating shaft 4, and the wheel 3 to adjustably tension the wrapping medium 2, and press the sealing piece 8 into the shaft hole 5. This suppresses leakage and dispersion of the dispersed powder.

However, in this structure, the sliding plate 7 and the seal piece 8 are required to be more than twice as large as the shaft hole 5, and as the conveyor and elevator become longer, the tension of the wrapped medium 2 increases, and the shaft hole 5 becomes larger. As the length exceeds several times the diameter of the wheel 3, the end of the case 1 has the drawback of creating a dead space that is close to several times the diameter of the wheel.

In view of the above-mentioned drawbacks, the object of this invention is to provide a tensioning device that eliminates the dead space at the end of a closed case.

The configuration of this invention will be explained based on the drawings of the embodiment. Fig. 3 is an external view of the case of the take-up part of this invention, Fig. 4 shows the installation of the take-up bearing, and Fig. 5 shows a side view of Fig. 3. The same reference numerals are used for parts common to the conventional one, and explanations will be given. Omitted. In FIGS. 3 and 5, the sealed case 10 has a size from the end of the shaft hole 5 to the end of the case 10 (to the extent that the conveyor can rotate around the outer periphery of the wheel 3 together with the wrapping medium). Form to approximately half the width. Sliding plates 11, 12, 1 that close the shaft hole 5
3 is a sliding plate 11 having a take-up bearing 6 fixed to one end and closing the entire length of the shaft hole 5 via a flexible elastic seal piece 8; and a bearing 6 of this sliding plate 11.
It consists of divided sliding plates 12 and 13 that are bendably connected to the side ends via connecting pieces 14. Guide rail 1
5 is provided on the outer surface of the sealed case 10 in parallel to both sides of the shaft hole 5 over the entire length of the shaft hole 5, and a sliding plate 11,
12 and 13 in a slidable manner. There is a gap between the end of the guide rail 15 and the end of the case 10 such that at least the divided sliding plates 12 and 13 can move in and out. Flexible elastic seal pieces 8 are provided on the sliding plates 11, 12, 13.
stack the case 10 and the sliding plates 11, 12, 13
The seal piece 8 and the sliding plate 11 are attached between the two.

The operation of the above configuration will be explained next.

When the take-up bearing 6 moves toward the center of the case 10, the divided sliding plates 12 and 13 pulled by the sliding plate 11 that fixes the take-up bearing 6 are regulated by the guide rail 15 and move the seal piece 8 to the case. 10. When the take-up bearing 6 moves toward the end face of the case 10, the divided sliding plates 12,
13 comes out of the guide rail 15 and bends freely, so that the wheel 3 and the rotating shaft 4 can freely approach the end of the case 10, eliminating dead space. Although the seal piece 8 is attached to the sliding plate 11,
It is more convenient if the separating sliding plates 12 and 13 are made separable and a winding guide 16 is attached to the end of the case 10.

As explained above, this invention has been developed by dividing the case end side of the sliding plate for crimping the seal piece that fixes the take-up bearing so that the sliding plate can bend freely at the case end. By placing the take-up bearing closer to the case end, the gap between the wheel and the case end is reduced, making it possible to create compact conveyors and elevators that eliminate dead space.

[Brief explanation of the drawing]

Figure 1 is an external view of the case of the conventional take-up part, Figure 2 is a diagram of the take-up bearing mounting part, and Figure 3 is a diagram of the take-up bearing mounting part.
The figure is an external view of the case of the take-up part of the embodiment of the present application, FIG. 4 is a view of the sliding member of the take-up part, and FIG. 5 is a side view of FIG. 3. 5: Shaft hole, 6: Take-up bearing, 8: Seal piece, 11: Sliding plate, 12, 13: Separate sliding plate, 1
4: Connecting piece.

Claims (1)

[Scope of utility model registration request] A long shaft hole from which the shaft end of the wheel protrudes is provided at the end of the case of a long closed conveyor or elevator that conveys spreadable powder, and guide rails are provided on the outer surface of the case in parallel to both sides of the shaft hole. At the take-up portion, a sliding plate fixed to the bearing is provided in sliding contact with the outer surface of the case and the guide rail so as to close the shaft hole, and a flexible seal piece is interposed between the outer surface of the case and the sliding plate. At one end of the sliding plate 11 to which the bearing 6 is fixed, split sliding plates 12 and 13 are provided so as to be freely bendable via a connecting piece 14.
A take-up portion sealing device characterized in that a shaft hole 5 is sealed via a flexible elastic seal piece 8 which is overlapped with a take-up portion sealing device.