JPH0647958Y2 - Removing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to an improvement of a dust remover for capturing and removing dust in sewers or waterways.

[Prior Art] A dust remover conventionally used to remove dust in sewers or waterways is wound around a head sprocket 2 and a tail sprocket 3 on the upstream side of a dust removing grid 1 as shown in FIG. An endless chain 4 is provided, and a plurality of rakes 5 are mounted on the endless chain 4 at equal intervals. Then, guides 6 and 7 are arranged on the pulling side and the returning side of the endless chain 4. As shown in FIG. 4, the rake 5 is pivotally supported by a pin 51 on the front side in the traveling direction of the endless chain 4, and further, rollers 52 are rotatably mounted on both ends of the rake 5. A driving machine (not shown) is connected to the head sprocket 2, whereby the head sprocket 2 rotates in the arrow A direction to rotate the anhydrous chain 4 in the arrow B direction.

At this time, the claw 53 of the rake 5 engages with the upstream surface of the dust removing grid 1 to scoop up the dust trapped in the dust removing grill 1 and discharge it from the discharge port.

The guide 6 engages with the roller 52 on the pulling side of the endless chain 4 to keep the posture of the rake 5 stable, and the guide 7 keeps the posture of the rake 5 on the return side of the endless chain 4 stable. is there. Further, a take-up 8 is attached to the head sprocket 2 and the endless chain 4 is adjusted to be properly tensioned.

However, the endless chain 4 gradually expands after being used for a long period of time, but since the endless chain 4 is supported by the guides 6 and 7 in a portion visible to humans, the state of expansion cannot be determined. , It often happened that the endless chain 4 was disengaged from the tail sprocket 3 by adjusting the take-up 8.

As disclosed in Japanese Utility Model Laid-Open No. 62-159534, a means for eliminating the drawback is to automatically adjust the tension of an endless chain by connecting a winding mechanism to a head sprocket via a load detector. A dust remover has been proposed.

[Problems to be solved by the invention] However, in the dust remover, it is usually sufficient to adjust the tension of the endless chain about once a year, and for that reason, it is not possible to provide the complicated automatic adjustment mechanism as described above. However, it is uneconomical in practice, and in reality, since the automatic adjustment mechanism remains inoperable, there is a problem in that it is very unstable in terms of maintenance and does not operate when necessary. there were. The present invention solves the above problems and provides a dust remover having a simple structure and a chain tensioning device that operates reliably.

[Means for Solving Problems] In the present invention, a dust removing grid is provided in a water channel, an endless chain is turned upstream along the dust removing grid, and a plurality of rakes with rollers are attached to the endless chain. In a dust remover in which a guide for guiding the roller is provided in the vicinity of the turning locus of the endless chain, a part of the guide on the return side is provided with a recess viewed from the upstream side, and tension that is swingable so as to correspond to the recess is provided. The sprocket is arranged so as to mesh with the endless chain so that the endless chain is always tensioned.The tensioning sprocket is attached to one end of the pivotally supported arm and the other end of the arm is heavy. It is characterized by mounting a weight.

[Embodiment] FIG. 1 is a sectional view of an embodiment of the present invention, and FIG. 2 is an operation explanatory view. In the figure, the same parts as those of the conventional example are designated by the same reference numerals, and the description thereof will be omitted. A recess 11 is formed at a substantially intermediate position of the guide 10 on the return side when viewed from the upstream side, and at a position corresponding to that portion,
A tension sprocket 12 mounted on an arm 13 pivotally supported by a shaft 14 is arranged and meshed with an endless chain 4. A weight 15 is attached to the other end of the arm 13. Further, a ring 16 is fixed to the tension sprocket 12 concentrically.

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

First, the endless chain 4 is tensioned by the take-up 8 to operate. At that time, 41 shown in FIG. 2 is the locus of the endless chain 4. The tension sprocket 12 is then in position 121. In the rake 5, since the front side in the traveling direction of the endless chain 4 is pivotally supported, the front roller 52 moves downward at the position 521 on the same locus as the endless chain 4, but the rear roller 52 moves the rake 5 Guide because the center of gravity of the
10 contact on top at position 522 and proceed downward. However, in this state, the rake 5 does not turn leftward in FIG. 2 and moves downward with a stable posture.

Next, when the operating time has passed and the endless chain 4 extends,
The tension sprocket 12 pushes the endless chain 4 to the right by the action of the weight 15, so that the endless chain 4 is kept properly tensioned. Stretching further progresses and tension sprocket 12
When is at the position of 122, the locus of the endless chain 4 becomes 42 and the roller 52 on the front side of the rake 5 comes into contact with the guide 10 and 52
Proceed downwards at position 3. At that time, since the upper part of the tension sprocket 12 of the guide 10 is inclined almost vertically, the rake 5 is reversed to the left side in FIG. 2, and the rear roller 52 moves downward at the position of 524. . However, even if it progresses in that state, the ring stuck to the tension sprocket 12
The roller 52 behind the rake 5 hits the rake 5, the rake 5 is pushed down to the right and corrected to a normal posture, and thereafter, the inclination of the guide 10 becomes gentle and the guide 10 advances downward in a normal posture. Then, when the endless chain 4 becomes the locus of 42, the tension limit of the endless chain 4 by the tensioning sprocket 12 is reached.
I'll be nervous until the locus of No. 41. Also, the arm 13 also moves in response to the movement of the tension sprocket 12, but a pointer and a scale plate are installed on the arm 13 to position the arm 13 corresponding to the tension limit point 122 of the tension sprocket 12. If the above is verified in advance, the extension state of the endless chain 4 can be easily known without inspecting the inside of the dust remover.

In this example, the tension allowance of the tension sprocket 12 was 200 mm, and the weight 15 was 60 kg.

[Advantages of the Invention] Since the present invention has the above-described configuration, the endless chain of the dust remover can always be kept in a constant tension with a simple structure, an accident can be prevented, and its practical value is great.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment of the present invention, FIG. 2 is an operation explanatory view of the embodiment of the present invention, FIG. 3 is a sectional view of a conventional example, and FIG. 4 is an assembly of a rake and an endless chain. FIG. 1: Dust removal grid, 2: Head sprocket 3: Tail sprocket, 4: Endless chain 5: Rake, 10: Guide, 11: Recess 12: Tension sprocket, 13: Arm 15: Weight

Claims (1)

[Scope of utility model registration request] 1. A dust removing grid is provided in a water channel, and an endless chain is turned upstream along the dust removing grid. The endless chain has two pairs of rollers, and the front roller is swingable about a fulcrum. In a dust remover in which a plurality of rakes are mounted and a guide for guiding the roller is provided in the vicinity of the rotation path of the endless chain, a part of the guide on the return side is provided with a recess as seen from the upstream side, and the sprocket for tensioning An arm, a shaft, and a weight are attached to the tension sprocket so as to press the endless chain at a position corresponding to the recess, and the tension sprocket is concentrically formed with a ring for correcting the rake reversed in the recess to the original posture. A dust remover characterized by being attached to.