JPH0756335Y2 - Dust remover for waterways - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a waterway dust remover for removing dust and the like in waterways of rivers and the like.

[Conventional technology]

A bar screen is installed in a waterway such as a river, and a rake for scooping is raised in front of it, and in a dust remover for a waterway that scoops up dirt and dust in the water, a dust remover chain is used to drive the rake up and down. Used.

This dust remover chain is a pair of endless chains in which inner links and outer links with two link plates opposed to each other are alternately connected by connecting pins, and the rake described above is provided between both endless chains. A plurality of endless chains are erected at appropriate intervals, and each endless chain is suspended between a drive sprocket arranged above the water channel and a driven sprocket arranged at the bottom of the water channel.

However, in the waterway dust remover thus arranged, the driven sprocket is submerged in the water, so maintenance is troublesome, and due to intrusion of dirt, dust, etc.,
There are problems such as wear, erosion, and accelerated corrosion.
As a dust eliminator in which the driven sprocket is omitted, for example, the one shown in Japanese Utility Model Publication No. 55-59214 has been developed.

The endless chain used in this dust remover uses inner link plates and outer link plates of different shapes for the inner link and the outer link, and the inner edge and outer edge of the outer link plate are provided with locking portions that project laterally, At both ends of the inner link plate in the longitudinal direction, when the inner and outer links are bent inward by a predetermined angle, they are engaged with the engaging portions of the outer edge, and when the inner and outer links are linear, It has a long trapezoidal shape with a protruding part that engages with the locking part on the inner edge, which prevents it from bending to one side during straight running, and within a certain angle during curved running of the chain end. It has a structure that can be bent in any direction.

Therefore, if a drive sprocket is provided at the upper end corners of the endless chain, the locking parts of both link plates engage with the protruding parts at the lower end corners near the bottom of the water channel, and the inner links are engaged. Since the outer link and the outer link are regulated so that they do not bend more than a predetermined angle, and circular travel can be performed by forming a circular arc with a constant diameter, the driven side sprocket that was conventionally provided at the lower end side corner part can be omitted. You can

[Problems to be solved by the device]

However, in the above-mentioned one, the outer link and the inner link use the two different shapes of the outer link plate having the protruding portion and the inner link plate having the protruding portion, which makes the manufacturing complicated and the cost. It has the drawback of becoming expensive.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a waterway dust remover using an endless chain that exhibits the same operations and effects as the above-mentioned conventional ones, and is easy to manufacture and inexpensive. .

[Means for Solving the Problems]

In order to achieve the above-mentioned object, the present invention forms an endless chain by alternately connecting an inner link and an outer link with two link plates facing each other with a connecting pin,
At one end outside the connecting pin of each link plate,
A hook-shaped rectilinear engaging portion having a notch on the inner edge side and a hook-shaped curved engaging portion having a notch on the outer edge side are formed at the other end to dispose the link plates in the same direction. On the outer surface inside the connecting pin of the inner link plate, the straight-moving stopper pin that engages with the straight-moving engaging portion of the outer link plate when traveling straight, and the outer-link plate bending when the endless chain end travels in a curve A bending stopper pin that engages with the engaging portion for maintaining a predetermined curvature is provided in a protruding manner, and the inner link inner plate of the outer link plate is for straight advancement of the link plate of the inner link when traveling straight. A straight advance stopper pin that engages with the engaging portion and a curved advance pin that engages with the curved engaging portion of the inner link plate to maintain a predetermined curvature when the endless chain end travels along a curved line Is characterized by

[Action]

According to the above configuration, the inner link and the outer link are engaged with the engaging portion for straight advancement and the stopper pin during straight running, so that the bending to one side is restricted. Further, when the lower end of the chain travels on a curve, even if the driven side sprocket is omitted, the curved engaging portion and the stopper pin are engaged with each other, and the predetermined curvature is set. The inner link plate and the outer link plate are formed in the same shape, and are different only in the protruding direction of the straight-moving and curving stopper pins.

〔Example〕

 An embodiment of the present invention will be described below with reference to the drawings.

The dust remover 1 is provided with an inclined bar screen 4 from the opening 2a of the cover plate 2 toward the bottom of the water channel 3, and a plurality of rakes 5 are moved up and down on the upstream side of the bar screen 4 to move the bar screen 4 The rake 5 is a scooping type that discharges dirt and dust in the water that is attached to the rake 5. The rake 5 is provided in front of the bar screen 4 and above the cover plate 2 from the bottom of the water channel 3 to a dust remover chain. 6 is driven.

A drive sprocket 8 for driving the dust remover chain 6 to rotate in the direction of arrow A is provided above the pedestal 7 erected on the cover plate 2.
And a motor 10 for driving the sprocket 8 via a transmission chain 9, and a wiper device (not shown) for scraping off the dirt and dust scraped up by the rake 5 at the lower part of the frame 7. A trough 11 for accommodating the dirt and sand scraped off by the wiper device is provided.

The dust remover chain 6 is a pair of endless chains which are guided by the ascending guide rails 12a and the descending guide rails 12b in the vicinity of the side portions of the water channel 3 and whose upper end side corner portions are rotatably driven by the drive sprocket 8 described above. Each of the endless chains 13 is composed of inner links 14 and outer links 15 alternately connected by connecting pins 16.

The inner link 14 and the outer link 15 are provided with two inner link plates 17 and 17 and outer link plates 18 and 18 at the end side thereof as rollers.
19 and bush 20 sandwiched inside and outside, outer link plate
The connecting pin 16 is inserted into the bush 18 and the bush 19 to be rotatably connected.

An appropriate number of brackets 21 project from the outer surface of the outer link plate 18 arranged on the other endless chain side, and each rake 5 has its end fixed to the bracket 21 so that the endless chain 13, It will be erected between 13.

Inner link plate 17 and outer link plate 18 are connecting pins.
A hook-shaped straight-engaging engaging portion 17a, 18a having a circular arc-shaped cutout on the inner edge side is provided at one end on the outer side of 16, and a hook-shaped curved engaging portion having a large arc-shaped cutout on the outer edge side at the other end. The inner link plate 17 and the outer link plate 18 are formed in the same shape including the portions 17b and 18b, and the inner link plate 17 and the outer link plate 18 are respectively formed in the inner link 14 and the outer link 15,
They are arranged in the same direction.

Furthermore, the outer surface of the inner link plate 17 has two connecting pins.
Between 16 and 16, a straight-movement stopper pin 17c and a curved-movement stopper pin 17d are provided so as to vertically shift in phase, and similarly, the straight-movement stopper pin 18c and the straight-movement stopper pin 18c are also formed on the inner surface of the outer link plate 18. Bending stopper pins 18d are provided so as to project, and these engaging portions 17a, 17b, 18a, 18b and stopper pins 17c, 17d, 18 are provided.
The c and 18d are provided equidistant from the connecting pin 16 that serves as a pivot.

The straight-movement engaging portions 17a, 18a and the straight-movement stopper pins 17c, 18c
The inner link 14 and the outer link 15 have guide rails 12a and 12b.
The straight-travel stopper pin 17c of the inner link plate 17, the straight-travel engaging portion 18a of the outer link plate 18, and the straight-travel stopper pin 18c of the outer link plate 18 are The straight-side engaging portions 17a are engaged with each other, and the descending side of the endless chain 13 is held in a straight state.

In addition, the curved engaging portions 17b, 18b and the curved stopper pins 17d, 1b
When the inner link 14 and the outer link 15 are bent inward in sequence, the curved stopper pin 17d of the inner link plate 17 causes the outer link plate 18 to bend when the inner link plate 17 bends inward. The engaging portion 18b and the curving stopper pin 18d of the outer link plate 18 engage with the curved engaging portion 17b of the inner link plate 17, respectively, and the inner link 14 and the outer link 15
Bends on an imaginary diameter D set to a predetermined curvature.

The above-mentioned virtual diameter D corresponds to the pitch circle diameter of the driven side sprocket that is omitted from the bottom of the water channel 3, and when the inner link 14 and the outer link 15 travel along the upper end side or the lower end side corner portion in a curved line, Engaging portions 17b, 18b and curving stopper pin 1
7d and 18d are engaged as described above, and are restricted so as not to bend to a diameter smaller than the virtual diameter D. Even if there is no sprocket on the driven side, it is reversed with the arc of the set virtual diameter D. To do.

The chain 6 for the dust remover of this embodiment includes an inner link plate 17 and an outer link plate that form the inner link 14 and the outer link 15.
By forming 18 and as described above, the inner link 14 and the outer link 15 are prevented from bending to one side during straight traveling, and when the inner link 14 and the outer link 15 travel along the curved line of the lower end side corner portion, Even if the driven side sprocket, which is conventionally provided at the lower end side corner portion, is omitted by forming an arc having a virtual diameter D so as not to be bent in the lateral direction or other directions,
It is designed to allow smooth circulation.

Further, the inner link plate 17 and the outer link plate 18 are formed in the same shape as described above, and both the link plates 17, 1
The difference of 8 is that the stopper pins 17c, 18c for straight advancement and the stopper pins 17d, 18d for curved advancement are only provided on either side so that by sharing the link plate and simplifying the man-hours, Compared to the above-mentioned conventional example, the endless chain 13
It is lightweight, inexpensive and easy to manufacture.

In the above embodiment, the lowering guide rail 12b is used on the lowering side of the endless chain 13.
As described above, the engaging portions 17a, 18a for straight traveling and the stopper pin 1
The 7c and 18c are engaged with each other to prevent bending to the downstream side, and therefore it is okay to omit this.

[Effect of device]

As described above, the waterway dust remover of the present invention has a hook-shaped rectilinear engagement portion with an inner edge cut out at one end outside the connecting pin of each link plate forming the inner link and the outer link.
At the other end, a hook-shaped curved engaging portion notched on the outer edge side is formed, and these link plates are arranged in the same direction on the inner link and the outer link, and more than the connecting pin of the inner link plate. A straight advance stopper pin that engages with the straight-movement engaging portion of the outer link plate when traveling straight, and a predetermined engaging portion that engages with the curving-engagement portion of the outer link plate during curved traveling of the chain end are provided on the inner outer surface. A curved stopper pin that holds the curvature of the outer link plate is projected, and the inner surface inside the connecting pin of the outer link plate engages with the straight engaging portion of the link plate of the inner link during straight running. Since the stopper pin and the curving stopper pin that holds the predetermined curvature by engaging with the curving engaging portion of the inner link plate when the endless chain end travels in a curve, the inner link and the outer link are
Endless which prevents bending to one side during straight running and reverses with a predetermined arc set when the chain end runs curved, allowing smooth circulation running even without a sprocket on the driven side. The chain is cheaper and easier to manufacture than the conventional one, and the product cost of the dust remover can be reduced.

[Brief description of drawings]

1 shows an embodiment of the present invention. FIG. 1 is a front view of a main part of a dust remover chain, FIG. 2 is a plan view of the same, and FIG. 3 is a side view of the dust remover. 1 ... dust remover, 3 ... waterway, 4 ... bar screen, 5
…… Rake, 6 …… Dust remover chain, 8 …… Drive sprocket, 12a …… Upward guide rail, 12b …… Downward guide rail, 13 …… Endless chain, 14 …… Internal link, 15 …… Outer Link, 16 ... Connecting pin, 17 ... Inner link plate, 18 ... Outer link plate, 17a, 18a ... Straight-moving engaging portion, 17b, 18b ... Curvilinear-moving engaging portion, 17c, 18c. Straight-moving stopper pins, 17d, 18d ... Bending stopper pins,
A: Direction of rotation of the endless chain 13, D: Virtual diameter drawn by the inner link 14 and outer link 15 bending inward

Claims (1)

[Scope of utility model registration request] 1. A waterway dust remover in which a plurality of rakes are installed between a pair of endless chains, and the rakes are rotated up and down to scavenge dust on a bar screen disposed in the waterway. Is a hook formed by alternately connecting an inner link and an outer link, each having two link plates facing each other, with a connecting pin, and notching the inner edge side at one end of each link plate outside the connecting pin. -Shaped straight-movement engaging portion is formed at the other end with a hook-shaped curved-movement engaging portion notched on the outer edge side, and these link plates are arranged in the same direction, and the inner link plates are connected. The outer surface inside the pin engages with the straight advance stopper pin that engages with the straight engaging portion of the outer link plate when traveling straight, and with the curved engaging portion of the outer link plate when the endless chain end travels in a curve. Combined And a curved stopper pin for holding a predetermined curvature are projected, and the inner surface of the inner link plate of the outer link plate engages with the straight link engaging portion of the link plate of the inner link during straight running. Stopper pin for
A waterway dust remover, characterized in that a curving stopper pin that holds a predetermined curvature by engaging with a curving engaging portion of the inner link plate when the endless chain end travels along a curve is projected.