JPS6123003B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for raking sediments and floating objects installed in a pond that introduces sewage and wastewater, and in particular to a device for raking sediments and floating objects that is installed in a pond that introduces sewage and wastewater, and particularly relates to a device for raking sediments and floating objects that is installed in a pond that introduces sewage and wastewater, and particularly relates to a device for raking sediments and floating objects that is installed in a pond that introduces sewage and wastewater, and particularly relates to a device for raking sediments and floating objects that is installed in a pond that introduces sewage and wastewater. Regarding shoes.

DESCRIPTION OF THE PREFERRED EMBODIMENTS A general device for collecting sediment and floating matter in a pond into which sewage or wastewater is introduced will be explained with reference to FIGS. 1 and 2.

Wheels 2 are rotatably supported and provided symmetrically on both sides of the introduction pond 1 near the bottom and near the water surface at the front and rear (horizontal direction in FIG. 1), respectively. A pair of endlessly connected chains 3 are stretched around this wheel 2 so as to circulate near the pond bottom and near the water surface. A plurality of scrapers 4 are attached to the pair of chains 3 at approximately equal intervals. Further, a pond bottom rail 5, a horizontal rail 6, and a tail rail 7 are provided at the bottom of the introduction pond 1, near just below the water surface, and between the wheel 2 on the tail side (left side in FIG. 1), respectively. These rails 5, 6, 7 are attached to the scraper 4 attached to the chain 3.
is slidably supported via a sliding device 8, which will be described later.

Next, a conventional sliding device 8 will be explained with reference to FIGS. 3 to 8.

The sliding device 8 consists of a bracket 9 made of metal having an L-shaped cross section and relatively high rigidity as shown in FIG. 5, and a metal sliding shoe 13, which will be described later.
It is fixed to the scraper plate 4 via a bracket 9 by means such as a fastener. Therefore, at the front end of the bracket 9 (on the conveying direction side of the scraper plate 4),
A bolt seat 10 is provided in a bulging manner so as to face the rail. Further, on the surface of the bracket 9 facing the rail, a dovetail groove 11 is formed which widens in the direction in which the scraper plate 4 is conveyed. A metal sliding shoe 13 having a dovetail ridge 12 to be fitted therein is fitted into the dovetail groove 11. Further, a fixing bolt 14 is screwed into the bolt seat 10 to prevent the sliding shoe 1 from sliding.
3 (left end in Fig. 5), and slide the sliding shoe 1.
3 is prevented from slipping out to the left in FIG. Note that by removing the fixing bolt 14, the sliding shoe 13
can be extracted. Thus, the sliding shoe 13 comes into contact with the rails 5, 6, 7, supports the scraper plate 4 which rotates together with the chain 3, and slides on the rails 5, 6, 7.

Therefore, the sliding shoe 13 must be replaced frequently due to wear, and the fitting portion between the dovetail groove 11 and the bank 12 must be assembled with high precision. However, conventional products have disadvantages such as corrosive rust caused by sewage and waste water that prevents disassembly and reassembly during replacement, and dust from the sewage and waste water persistently adheres to the product, hindering assembly.

This invention reduces wear on sliding shoes and rails,
It is an object of the present invention to provide a sliding shoe that can be easily disassembled and assembled and eliminates the above-mentioned drawbacks.

In this invention, a bracket is fixed to a scraper plate provided on a chain that rotates between the water surface in the introduction pond and the pond bottom.
The sliding shoe of the scraper attached to the bracket and sliding on the support rail includes a plurality of supports made of a synthetic resin material having water-resistant plastic elasticity and protruding from the surface of the bracket facing the support rail. It is characterized in that it can be fitted between the ridges and that a protrusion and/or a protrusion is provided on the surface facing the bracket.

The structure of this invention will be explained with reference to drawings of embodiments.

9 and 10 are a front view and a side sectional view showing an example of the sliding shoe of the present invention attached to a bracket, and FIGS. 11 and 12 are a front view and a bottom view showing the first embodiment.

In Figures 9 and 10, the bracket 15 is fixed in contact with the front surface of the scraper plate 4 in the direction of movement (right side in Figure 10) and its upper or lower surface (Figure 10 shows the state in which it is fixed to the lower surface). , this bracket 15
Support ridges 16 are provided protruding from both sides of the surface facing the rails 5, 6, and 7 (lower surface in FIGS. 9 and 10), and ridges 16A having curved corners at the corners are provided on the inner surface of the support ridge 16. . Then, the sliding shoes 17 are fitted between the support ridges 16 on both sides, facing the surface of the bracket 15 on which the support ridges 16 are provided. This sliding shoe 17 is airtight, water resistant, and has plastic elasticity, and its contact portion is made of a synthetic resin material (for example, nylon, polyurethane, polyacetal, etc.) that uses water as a lubricant. The sliding shoe 17 is provided with a protruding holding ridge 18 having a ridge 18A that fits into the ridge 16A of the supporting ridge 16, so that the supporting ridge 16 and the holding ridge 1
Match 8. Further, the sliding shoe 17 is provided with a guide flange 19 that engages with the rail on the opposite side of the surface on which the holding ridge 18 is protruded, and a groove 20 is recessed in the middle part of the holding ridge 18. 11th,
In FIG. 12, on the upper surface of the holding ridge 18, protrusions 21 which are to come into pressure contact with the rail facing surface of the bracket 15 when fitted between the supporting ridges 16 of the bracket 15 are arranged and protruding in substantially the same direction as the holding ridge 18. be.

13 and 14 are a front view and a bottom view of a sliding shoe showing a second embodiment, in which a protrusion 22 is provided on the upper surface of the holding ridge 18 to be pressed against the surface of the bracket 15 facing the rail.
These are protruding structures arranged in a staggered pattern.

15 and 16 are a front view and a bottom view of a sliding shoe according to a third embodiment, in which a protrusion 21 is provided on the upper surface of the holding ridge 18 to be pressed against the surface of the bracket 15 facing the rail.
In addition, protrusions 22 are alternately arranged and protruded.

The operation of the above configuration will be explained next.

The sliding shoes 17 made of synthetic resin are attached to the rails 5,
Water is interposed between 6 and 7 to lubricate the sliding surfaces and reduce sliding resistance. Since the holding ridge 18 is made of synthetic resin and has plastic elasticity, even if the supporting ridge 16 is slightly distorted, the holding ridge 18 adapts to the distortion and the entire body adheres tightly to the supporting ridge 16. The protrusions 21 and the protrusions 22 are strongly pressed against the bracket 15, and even if subjected to vibrations or shocks, the sliding shoes 1
7 in place on the bracket 15.

Note that if a slight gap is provided between the holding ridge 18 and the rail-facing surface of the bracket 15, the supporting ridge 16
This facilitates fitting between the holding ridge 18 and the retaining ridge 18. In addition, a protrusion 2 is provided on the surface of the sliding shoe 17 facing the end surface of the support ridge 16.
It is even better to provide a protrusion 1A and/or a protrusion 22A with a slight gap therebetween. Further support ridge 1
6 and the holding ridge 18 to form a small taper so that they fit in a wedge shape, the fitting is easy and it is possible to prevent the holding ridge from falling off.

Depending on the characteristics of the material, the cross sections of the ridges 21 and the ridges 22 may be thick at the base, equal diameter at the tip and base, or
There are those with a base thinner than the tip, those with a pointed tip, those with a rounded shape, those with a flat surface, those with a recess, those with convex sides, those with a concave shape, those with straight sides, etc., and these are combined. Projection part 2 illustrated in
Any one of 3 to 43 may be selected.

As explained above, the sliding shoe of the present invention is made of a synthetic resin material and has protrusions or ridges protruding from the holding ridge, so that it flexibly fits into the bracket and makes strong pressure contact with it. Since the rail is securely fixed to the rail and slides on the rail due to water lubrication, sliding resistance can be reduced.

[Brief explanation of the drawing]

Figure 1 is a side view showing an example of a general scraping machine.
Fig. 2 is a view taken along arrow A-A in Fig. 1, Fig. 3 is a front view of the bracket of a conventional sliding device, Fig. 4 is a bottom view of Fig. 3, and Fig. 5 is a B of Fig. 3. -B sectional view, 6th
The figure is a rear view of a conventional sliding shoe, FIG. 7 is a plan view of FIG. 6, FIG. 8 is a cross-sectional view taken along line C-C of FIG. 6, and FIG. 9 is a state in which the sliding shoe of the present invention is installed. 10 is a sectional view taken along line DD in FIG. 9.
The figure is a front view of a sliding shoe showing a first embodiment of the present invention.
12 is a bottom view of FIG. 11, FIG. 13 is a front view of the sliding shoe showing the second embodiment, FIG. 14 is a bottom view of FIG. 13, and FIG. 15 is a sliding shoe showing the third embodiment. FIG. 16 is a front view of the shoe, FIG. 16 is a bottom view of FIG. 15, and FIG. 17 is a sectional view showing various examples of protrusions and seats. 1: Introduction pond, 2: Wheel, 3: Chain, 4:
Scraping board, 5, 6, 7: Rail, 8: Sliding device, 1
5: Bracket, 16: Support ridge, 18: Holding ridge,
21: protrusion, 22: protrusion.

Claims (1)

[Claims] 1 A bracket is fixed to a raking plate provided on a chain that rotates between the water surface in the introduction pond and the pond bottom, and the sliding shoes of the raking machine, which is attached to the bracket and slides on the support rail, are made of water-resistant plastic. The bracket is made of an elastic synthetic resin material, can be fitted between a plurality of support ridges protruding from the surface of the bracket facing the support rail, and has protrusions and/or protrusions on the surface facing the bracket. Sliding shoes for a raking machine characterized by the following: