JPS64981Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial field of use In human waste tanks used to heat water from human waste that has been decomposed by bacteria,
This invention relates to a cloth tightening device used to attach (wrap) cloth around the outer periphery of a punching metal drum.

Prior Art Conventionally, as shown in Figs. 5 to 12, arc-shaped presser fittings 2...2 to which rubber packing 1 is attached, and push bolts 3...3 that press these presser fittings 2...2 are used.
, arc-shaped frames 4...4 into which these push bolts 3...3 are screwed together, and predetermined angles in the circumferential direction of the inner can 5 of the human waste tank in order to fix both ends of these frames 4...4. A cloth tensioning device 7 was constituted by the frame fixing fittings 6...6 fixed at intervals.

Then, by sandwiching the arms 4a at both ends of the frame 4 between the pedestal 6a and the washer 6b that constitute the frame fixing fittings 6...6, and tightening them with bolts 6c, the frames 4...4 and the presser fittings 2...2 are inserted. Push bolts 3 are attached in a ring shape along the outer circumferential surface of the can 5, and then attached to the frames 4...
Press the presser metal fittings 2...2 with 3 and press the cloth 8 into the inner can 5.
The structure was such that it was tightened to the outer circumferential surface of the Note 2a
is a guide rod protruding from the center of the presser metal fitting 2, and by inserting the guide rod 2a into a guide hole 4b provided in the center of the frame 4, the presser metal fitting 2 is slidably attached to the frame 4. It is being In FIG. 12, numeral 9 is a punching (perforated) drum portion constituting the inner can 5 of the excreta tank, and the cloth 8 is attached to the outer periphery of the punching drum portion 9. 10 External human waste tank outer can,
11 is a suction pipe that opens into the inner can 5, 12 is a vacuum pump connected to the suction pipe 11, and the human waste that has been decomposed by bacteria is introduced into the outer can 10 and filtered through the cloth 8. It is designed to be discharged to the outside from the suction pipe 11.

Problems to be solved by the invention As mentioned above, in the case of the conventional cloth tightening device,
The arms 4a at both ends of the frame 4 are placed between the pedestal 6a and washer 6b constituting the frame fixing fittings 6...6.
The frames 4...4 and the presser fittings 2...2 are attached in a ring shape along the outer circumferential surface of the inner can 5 by pinching and tightening the bolts 6c.
...4 with the press bolt 3...3 that is attached to the presser metal fitting 2.
Since the cloth 8 is tightened to the outer peripheral surface of the inner can 5 by pressing the cloth 8, there is a problem that the work of attaching, removing, and replacing the cloth 8 is extremely troublesome and time-consuming.

The object of the present invention is to solve the above-mentioned problems and to provide a fabric tensioning device that can easily attach, detach, and replace fabrics.

Means for solving the problem A cloth presser fitting that stands up and falls down around a pivot and presses the end of the cloth to the outer circumferential surface of the inner can in the laid down state, and a toggle that operates the cloth presser fitting. A cloth tensioning device was constituted by a link and a pressure cylinder that raised and lowered the cloth presser metal fitting via the toggle link.

Function When the piston rod of the pressure cylinder is extended, the fabric presser metal fitting falls down due to the toggle link, and the presser metal fitting presses the end of the fabric against the outer circumferential surface of the inner can to tighten the fabric. When the piston rod is retracted, the fabric presser metal fitting falls down due to the toggle link. The presser foot metal fitting will stand up and release the tension on the fabric.

Embodiments Next, embodiments of the present invention will be described with reference to FIGS. 1 to 4. Reference numeral 20 denotes a cloth presser metal fitting that stands up and falls down around the pivot 21, and presses the end of the cloth 8 to the outer peripheral surface of the inner can 5 in the laid down state.The cloth presser metal fitting 20 includes a rubber packing 22, Arc-shaped sheet metal 23 to which the rubber packing 22 is attached
and a guide pin 23 protruding from the top surface of the sheet metal 23.
A sheet metal support frame 24 that supports the sheet metal 23 so as to be removable by inserting a...23a into the pin receiving holes 24a...24a, and a bolt rod 25 protruding from the center of the sheet metal support frame 24. The rotating arm 26 has a bolt receiving hole 26a at its tip for mounting the bolt rod 25 at a substantially right angle, and the base end of the rotating arm 26 is connected to a bearing 27 by the pivot 21. It is pivoted. When the rotating arm 26 is laid down (rotated clockwise) using the pivot 21 as a fulcrum, the rubber packing 22
The cloth 8 is pressed onto the outer peripheral surface of the inner can 5. 28 is a sheet metal 23 and a sheet metal support frame 2 in order to enhance the crimping effect by the rubber packing 22.
4 is a disc spring interposed between 29 and bolt rod 25
It is a rock nut.

Reference numeral 30 denotes a toggle link for operating the presser foot fitting 20, and the toggle link 30 has one end connected to a large and small link rod 3 by a pivot 31.
2 and 33, and when the presser foot metal fitting 20 is laid down, these large and small link rods 3
2 and 33 overlap each other, and the larger link rod 3 is moved so that the large and small link rods 32 and 33 form a predetermined acute angle α when the presser foot metal fitting 20 is erected.
The tip of the smaller link rod 33 is pivotally connected to the bearing 27 by the pivot 34, and the tip of the smaller link rod 33 is attached to the pivot 35.
It is constructed by being pivotally attached to the rotating arm 26 by a.

Reference numeral 40 denotes a pressure cylinder for raising and lowering the presser metal fitting 20 via the toggle link 30, and in the case of the embodiment, an air cylinder is used. This cylinder 40 is pivotally mounted to a bearing 42 by a pivot 41 so as to be swingable. The tip of the piston rod 43 is pivotally connected to the pivot 31, and when the rod 43 is extended, the larger link rod 32 rotates clockwise about the pivot 34, and the smaller link rod 33 rotates clockwise. By rotating clockwise around the pivot 21, the large and small link rods 32 and 33 are placed on top of each other, thereby lowering the work clamp 20, and conversely, when the piston rod 43 is retracted, the large and small link rods 32 and 33 overlap each other. The link rods 32, 33 are rotated counterclockwise, and the large and small link rods 32, 33 form an acute angle α with each other, so that the presser foot metal fitting 20 is erected.

The cloth tightening device 50 consisting of the cloth presser fitting 20, toggle link 30, and air cylinder 40 as described above is arranged at predetermined angular intervals (in the embodiment) in the circumferential direction of the inner can 5 in order to press the cloth 8 without any gaps in the circumferential direction. In the case of , multiple pieces are arranged with an angle of 20°). Further, each of the air cylinders 40...40 is connected to each other by air suction and discharge pipes 60, 70, as shown in FIG.
All the air cylinders 40...40 can be operated simultaneously by the suction and discharge valves 80, 90 provided at the air cylinders 40, 40.

Since the fabric tensioning device of the embodiment has the above-described configuration, all the air cylinders 40...40 can be operated simultaneously by a simple operation of opening and closing the suction and discharge valves 80, 90, and each air cylinder can be operated simultaneously. Compared to the case where 40...40 are operated separately, the efficiency of the work of replacing the cloth 8, etc. can be further improved.

Effects of the invention (1) Compared to the conventional cloth tensioning device that uses bolts to tighten the cloth, the work of tightening the cloth is extremely simple and easy, and the efficiency of work such as attaching and removing cloth is dramatically improved. It can be improved.

(2) Since the work of attaching and removing the cloth becomes easier, it becomes possible to wash the cloth more frequently, thereby improving performance and increasing the durability of the cloth.

[Brief explanation of the drawing]

Figure 1 is a side view of the fabric tensioning device of the present invention, Figure 2
The figures are the same partial cross-sectional front view, Figure 3 is the same plan view, and Figure 4 is the same partial sectional front view.
The figure is a sectional view showing the connection state of each cylinder, FIG. 5 is a front view showing the use state of the conventional cloth tensioning device,
Figure 6 is a sectional view taken along the - line in Figure 5, and Figure 7 is a cross-sectional view of Figure 5.
Fig. 8 is a sectional view taken along the - line in Fig. 5, Fig. 9 is a - arrow sectional view in Fig. 6, and Fig. 10 is a sectional view taken along the - line in the figure.
11 is a plan view of the end of the frame, and FIG. 12 is a sectional view of the excreta tank. 5... Inner can, 8... Cloth, 20... Cloth presser metal fitting, 2
DESCRIPTION OF SYMBOLS 1... Pivot, 30... Toggle link, 40... Pressure cylinder, 50... Cloth tightening device.

Claims (1)

[Scope of utility model registration request] A cloth presser metal fitting 20 that stands up and falls down about a pivot 21 and presses the end of the cloth 8 to the outer peripheral surface of the inner can 5 in the laid down state, and a toggle link 30 that operates the cloth presser metal fitting 20. , the toggle link 3
0, and a pressure cylinder 40 for raising and lowering the cloth presser fitting 20 through the pressure cylinder 40.